WATER SAFETY PLAN - s3-ap-southeast...

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R. Ambrocio St., Townsite, Limay, Bataan (047) 244 5274 | [email protected]

WATER SAFETY PLAN LIMAY WATER DISTRICT

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Contents INTRODUCTION .................................................................................................................................................. 2

A. BACKGROUND ..................................................................................................................... 2

B. LEGAL BASIS ......................................................................................................................... 2

C. VISION, MISSION, PERFORMANCE PLEDGE .................................................................... 3

D. LIWAD WSP AND ITS OBJECTIVES .................................................................................... 3

I. WATER SAFETY PLAN TEAM ........................................................................................................................... 5

A. TEAM CHART ........................................................................................................................... 5

B. FUNCTIONS .............................................................................................................................. 6

II. LIMAY WATER DISTRICT WATER SUPPLY SYSTEM ................................................................................. 10

A. GROUND WATER SOURCES ............................................................................................... 11

B. TREATMENT ........................................................................................................................ 13

C. DISTRIBUTION .................................................................................................................... 13

D. WATER PROCESS ................................................................................................................ 14

E. STAKEHOLDERS .................................................................................................................. 15

III. HAZARD IDENTIFICATION AND RISK ASSESSMENT............................................................................. 17

A. GROUNDWATER ............................................................................................................... 20

B. DISTRIBUTION .................................................................................................................... 21

IV. DETERMINE AND VALIDATE CONTROL MEASURES, REASSESS AND PRIORITIZE THE RISKS ...... 22

A. GROUNDWATER ................................................................................................................. 23

V. IMPROVEMENT / UPGRADE PLAN ........................................................................................................... 25

A. GROUNDWATER .................................................................................................................25

B. DISTRIBUTION ....................................................................................................................25

VI. MONITORING OF CONTROL MEASURES ................................................................................................ 26

A. GROUNDWATER ................................................................................................................ 26

b. DISTRIBUTION ................................................................................................................... 26

VII. VERIFICATION............................................................................................................................................. 27

A. Internal Checking of activities .............................................................................................27

B. CONSUMER SATISFACTION ..............................................................................................27

VIII. SUPPORTING PROGRAMS ........................................................................................................................ 28

IX. PERIODIC REVIEW .......................................................................................................................................29

ABBREVIATIONS ................................................................................................................................................ 30

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INTRODUCTION

A. BACKGROUND

The Limay Water District (LIWAD) was formed under the local Sangguniang Bayan Resolution No.

161 in November 1988. Thereafter, a Deed of Transfer for the existing water supply system facilities

including the right-of-way and sites was given by the local government to the newly formed Water District.

In December 1988, LIWAD started its operation under the management of General Manager Ernesto

Enriquez. The Local Water Utilities Administration (LWUA) granted a loan of about ₱ 1,107,295 as financial

assistance for the rehabilitation of the existing water supply system, start-up costs and training of

employees. A ₱ 100,000 grant was also extended to the District after being affected by the 1990 earthquake.

A separate water system serving Brgy. Lamao located about 6 km south of town proper was

reportedly constructed in 1987 and was then operated by the Barangay Council. In November 1990, the

Lamao water system was turned over to LIWAD. The system consisted of one deep well source, one

elevated tank, and a pipe distributed system. The independent water system initially gave 474 additional

service connections to the District.

B. LEGAL BASIS

By virtue of Presidential Decree 198 known as the Provincial Water Utilities Act of 1973, the

Municipal Board of Limay through the Local Water Utilities Administration passed a resolution on

November 4, 1988 creating the Limay Water District.

A Conditional Certificate of Conformance (CCC No. 379) was issued by LWUA formally

establishing the water district on November 25, 1988. Consequently, the Municipal Government turned

over to LIWAD the control and supervision of the municipal water supply system.

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C. VISION, MISSION, PERFORMANCE PLEDGE

OUR VISION . . .

A Water District composed of competent and dedicated workers working together to provide quality

service to the people of Limay, Bataan to ensure that every resident in the community will have access to a

safe and sustainable water supply at the lowest possible cost.

OUR MISSION . . .

To provide residents with safe, adequate, potable and economically viable water service 24 hours a day.

OUR PERFORMANCE PLEDGE. . .

We, the officials and employees of the Limay Water District commit ourselves to provide safe, potable and

adequate water supply to every resident of the community at the least possible cost.

D. LIWAD WSP AND ITS OBJECTIVES

Water Safety Plan (WSP) is an internationally recognized comprehensive risk based approach to

attain safe water. Considered as the best practice in the industry, WSP is an effective means to consistently

ensure the safety of a drinking-water supply. This is attained through a risk assessment process and risk

management approach that encompasses the entire stage in the supply of water from catchment to

consumer.

Hence, as mandated by the Department of Health’s (DOH) Administrative Order 2014-0027 which

declares the development and implementation of Water Safety Plan (WSP) by all drinking- water service

providers and as required by the LWUA Memorandum Circular No. 010.14, the management of Limay

Water District assembled a team represented by all its Divisions to develop and monitor LIWAD WSP.

The WSP will focus on monitoring the safety of water from the source to LIWAD’s existing

concessionaires. Included in the WSP is the protection of the water sources, pumps and distribution

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pipelines from risks that will endanger the quality of water being delivered to the concessionaires.

Specifically, the WSP aims to:

o develop an understanding of the complete water system and its capability to supply water that

meets health-based targets;

o identify potential sources of contamination and how it can be controlled;

o validate control measures employed to control hazards;

o implement a scheme to monitor the control measures within the water system;

o conduct timely corrective actions to ensure the consistent supply of safe water; and

o verify the drinking-water quality, ensuring that the WSP is properly implemented and attaining

the required performance to meet applicable national, regional and local water quality standards

or objectives.

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ENGR. ANTHENOR R. GARCIA

TEAM LEADER

JUNE V. MAÑAOL

SOURCE AND TREATMENT

JOMEL ESCOTO


MARK A. GARCIA


REYNALDO C. EBON

DISTRIBUTION

MARVIN D. LACE

DISTRIBUTION

BOBBY CONSTANTINO

SECRETARIAT

RUBY P. TIAMBENG

SECRETARIAT

I. WATER SAFETY PLAN TEAM

LIWAD Safety Plan team is composed of various individuals with expertise in their respective field and

with capability to develop, implement and monitor the Water Safety Plan. Each individual possesses

competencies that can contribute to the effective attainment of the goals and objective set forth in the

plan.

A. TEAM CHART

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B. FUNCTIONS

NAME DIVISION DESIGNATION WSP TEAM

RESPONSIBILITY

TASK DESCRIPTION

ANTHENOR R. GARCIA GENERAL

MANAGER

WSP TEAM

LEADER

Over sees the following:

• Production, quality

control/monitoring,

storage and

distribution of safe

and potable water to

consumers

• Operation,

safeguarding and

maintenance of

production, treatment

and storage facilities/

appurtenances of

LIWAD

JUNE V. MAÑAOL

ENGINEERING OPERATOR SOURCE AND

TREATMENT

Responsible for the:

• Operation,

safeguarding and

maintenance of

equipment,

appurtenances,

structures and grounds

on all Deep Well and

Pumping Stations.

• Maintenance of

adequate supply of safe

and potable water at

the distribution system

• Application of

chemicals at deep well

sources and assists in

the implementation of

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other water quality

management programs

REYNALDO C. EBON ENGINEERING MAINTENANCE

FOREMAN DISTRIBUTION

• Directs the operation

and safeguarding of

deep well sources, lift,

booster stations,

reservoir stations and

other distribution

system appurtenances

• Coordinates with the

Maintenance and

support Services Group

with regard to the

maintenance of

equipment, facilities

and appurtenances

• Assists in the evaluation

of existing systems and

submits appropriate

recommendations

BOBBY B.

CONSTANTINO ADMINISTRATIVE

SUPERVISING

SUPPLY/

PROPERTY

OFFICER

SECRETARIAT

• Supervises and assists

in the following

activities of the Section:

a. project

implementation,

b. work

interconnection,

c. preparation of

program works

• Prepares and updates

program of works

• Submits reports and

communications to

superiors as to the

status and

accomplishment of the

project.

- Maintains availability

and orderliness of

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materials and

equipment for the

project

JOMEL L. ESCOTO ENGINEERING OPERATOR SOURCE AND

TREATMENT

• Operates pumping

units and water

treatment equipment

within jurisdiction to

maintain adequacy and

safety of water supply.

• Monitors, checks and

records all meter

readings and other

related data and

accomplishes daily

operation records.

• Controls distribution

valves to meet water

supply schedule and

facilitates mainline leak

repair.

• Conducts routine

chlorine residual

monitoring and checks

water supply schedule

on selected points of

the distribution system.

• Logs important

events/abnormalities

during tour of duty and

informs superiors if

necessary.

• Attends to customer

complaints/requests

MARVIN D. LACE

ENGINEERING

STOREKEEPER

DISTRIBUTION

• Inspects and estimates

all applicants for New

Connections, Mainline

Disconnection and

Mainline Reconnection

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• Supervises the

restoration of all

damage roads,

pavement and other

facilities affected by the

implementation of all

WD utility projects and

repairs

• Monitors and submits

reports on the status of

the actual construction

of the water supply

system of subdivisions

turned-over to the WD

RUBY P. TIAMBENG

ADMINISTRATIVE

ADMIN STAFF

SECRETARIAT

• Prepares reports,

correspondences,

memoranda and other

needed documents

• Files and maintains

records of all

correspondences and

reports.

• Prepares and

dispatches requests of

the team needed for

the operation

• Performs other

function that maybe

assigned from time to

time

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II. LIMAY WATER DISTRICT WATER SUPPLY SYSTEM

LIWAD covers all 12 barangays, with 23 pumping stations spread out within the town of Limay. These

pump stations comprise the nine (9) independent water systems that brings tap water to households,

commercial establishments and offices.

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SOURCE PUMPING STATION NO.

LOCATION OPERATING SCHEDULE AVE. CAPACITY m³ /day

1 NATIONAL ROAD REFORMISTA

24 HOURS A DAY 1488

2 TUNDOL 17 HOURS A DAY 413

3 NATIONAL ROAD ST. FRANCIS II

24 HOURS A DAY

4 ST FRANCIS II 21 HOURS A DAY 629

5 MAMALA, BLISS 24 HOURS A DAY 120

6 ST. FRANCIS VILLAGE- HI WAY

24 HOURS A DAY 201

7 SAN JOSE, DUALE 23 HOURS A DAY 1521

8 ISIDRO, SUBDIVISION 24 HOURS A DAY 146

9 TOWNSITE MAIN 24 HOURS A DAY 1128

10 ST. FRANCIS II DUALE UPPER 23 HOURS A DAY 1083

11 IMMACULATE-BLISS 24 HOURS A DAY 260

12 ROMANVILLE SUBDIVISION 24 HOURS A DAY 148

13 VILLA ELESTER SUBDIVISION 24 HOURS A DAY 159

14 MARSTEEL ALANGAN 22.5 HOURS A DAY 450

15 ALANGAN BAPA 22.5 HOURS A DAY 570

16 ALANGAN HEIGHTS 24 HOURS A DAY 419

17 HILLVIEW LAMAO 22.5 HOURS A DAY 122

18 PEX LAMAO HI-WAY 22.5 HOURS A DAY 762

19 LAMAO MAIN 24 HOURS A DAY 1678

20 CRUSHER LAMAO 24 HOURS A DAY 258

21 BO. LUZ MAIN INACTIVE

22 BO. LUZ NEW INACTIVE

23 UPPER TOWNSITE INACTIVE

24 BLISS INACTIVE

A. GROUND WATER SOURCES

LIWAD sources its water supply from 22 deep well pump stations scattered throughout the town of Limay.

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B. TREATMENT

LIWAD’s existing deep well facilities include 23 deep well stations, network of pipelines, elevated

water tanks and reservoirs. These deep wells have rated capacity of 120 to 1,678 cmd. The treatment for

ground water involves the use of Liquid Chlorine Dioxide.

The deep well facilities augment the water pressure of higher sections and far-off pipelines of the

service areas.

Water quality of the groundwater is compatible with the PNSDW and thus, does not require any

treatment except for preventive disinfection using Liquid Chlorine Dioxide. As a standard, the water

sample taken from the distribution line 100 meters away from the well source should have a minimum

0.30-ppm of residual chlorine. Based on the results of field monitoring, the dosing of chlorine at pumping

stations are adjusted, accordingly.

C. DISTRIBUTION

The existing water systems based on pipeline connectivity are as follows:

1. Limay Town proper Water system 1

2. Limay Town Proper Water system 2

3. Mamala Water system

4. Bliss Water system

5. Isidro subdivision water system

6. Saint Francis village water system

7. Alangan Water system

8. Lamao water system

9. Hillview Subdivision water system

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WELL

STORAGECHLORINATI

ON DISTRIBUTIONHOUSEHOLDS

D. WATER PROCESS

PROCESS STEP SYMBOL RESPONSIBLE UNIT

SOURCE/WELL

Engineering Division

STORAGE TANKS


CHLORINATION

PROCESS/TREATMENT


DISTRIBUTION LINES


CONSUMERS/

HOUSEHOLDS


WELL

STORAGE

CHLORINATION

DISTRIBUTION

HOUSEHOLDS

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E. STAKEHOLDERS

As a service provider, it is an absolute necessity that LIWAD maintains a harmonious relationship

and close coordination with its stakeholders. This amiable partnership will benefit both the District and

more importantly, the people it serves.

LIWAD submits monthly water quality report to Local Water Utilities Administration as its

regulatory body.

LIWAD coordinates with the Municipal Health Office, Municipal Engineer’s Office and the

Department of Public Works and Highways especially during pipe laying, maintenance works, distribution

line repairs and the like. Similarly, these offices may also seek the support of the Water District if and when

the need arises.

LIWAD has also established close connections with key suppliers for water treatment, PENELCO

and other major suppliers to mitigate water interruption should they fail to meet the services required by

the Water District and/or their services disrupt the operation of the latter.

A stable and reliable partnership was also built with the Home Owners Association (HOA),

Barangay Officials, Philippine National Police (PNP), Limay Fire Department and households near the

LIWAD facilities to guarantee the security of its properties against adversaries.

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Name

Relationship to Drinking

Water Supply Issues

Point of Contact with WSP Team

Issues with Drinking

Water Supply

Interaction Mechanism

Record of Interaction

Local Water Utilities Administration

Regulatory Submission of WQ Report

Water Quality

Reporting Monthly Report

Department of Environment and

Natural Resources - CENRO

Environment Protection Authority

Regulatory Monitoring

Effluent Quality

Reporting Reports

Municipal Health Office

Regulatory Regulatory Monitoring

Water Quality

Reporting Reports

Municipal Engineer’s Office

Local Regulatory

Project / Leak repair coordination

Water Quality

Meetings / Communication

Minutes of Meetings

Department of Public Works and Highways

Local Regulatory

Project / Leak repair coordination

Water Quality


Minutes of Meetings

PENELCO Supplier ( Energy )

Power interruption coordination

Water Quality /

Intermittent Supply

Reporting Reports

Municipal Health Office

Regulatory Regulatory Monitoring

Water Quality

Bacte Test report

Reports

Home Owners Association

Community partner

Turn over and coordination

meeting

Water Quality and

Rates


Minutes of Meetings

Brgy. Officials Community partner

Coordination meeting

Water Quality and

Rates


Minutes of Meetings

Suppliers Industry partner

Procurement / Delivery

Supply quality and

quantity

Purchase requisitions,

Purchase orders,

Delivery receipts

Household near Pump Stations

Community partner

Coordination meeting

Supply quality and

quantityReporting Reports

Fire Department Community partner

Fire Hydrant supply and

location

Supply quality and

quantityReporting Reports

PNP Police authority Safety of Facility Supply quality

Reporting Reports

Stakeholders

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III. HAZARD IDENTIFICATION AND RISK ASSESSMENT

The WSP team took into consideration unusual events that may affect the quality of water being

delivered by Limay Water District. The team identified risks that may occur in each step of the validated

process flow. The hazard and hazardous event identification was conducted using existing records,

historical events, local knowledge and onsite visits. This led to the formulation of controls that can and will

mitigate such hazards and hazardous events to ensure a safe drinking-water supply. All potential biological,

physical and chemical hazards that could be associated with the water supply were thoroughly considered

by the WSP team during its identification process.

The hazards identified were subsequently ranked to establish priorities. A semi-quantitative risk

assessment was used by the WSP team used to calculate a priority score for each identified hazard. The

prioritization matrix aims to rank the hazard and hazardous events as to the urgency of mitigations that

need to be implemented. The likelihood and severity were derived from the team’s technical knowledge

and expertise, historical data and relevant guidelines. The table on the next page shows the calculated risk

scores results based on the described semi- quantitative risk matrix used to rate the likelihood or frequency

and severity or consequence of the hazards. Also determined by the WSP team is a cut - off point, or a risk

score of 5, below which all hazards will be retained for further consideration. Such hazards are considered

to be of less urgency considering the involvement of very small risks.

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No Impact / Not

Detectable Rating 1

Minor Complianc

e Impact Rating 2

Catastrophic Public Health

Impact Rating 5

15

4 6 8 10

2 3 4 5

20 25

8 12 16 204

3

2

1

10 15

6 9

Risk Rating Low Medium High Very High

Almost certain Once a day

Rating 5

Moderate Once a month

Rating 3

5

Rating 1

Risk Score <6 "6 - 9" "10 - 15" >15

Unlikely Once a Year Rating 2

Rare Once every 5 years

12

Likelihood / Frequency

Likely Once a week

Rating 4

Severity / Consequence

Moderate Aesthetic Impact

Rating 3

Major Regulatory Impact Rating 4

Risk Factor Matrix

Semi-Quantitative Risk Matrix

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Ranking Likelihood/Frequency Severity / Consequence

5 Almost Certain - Once per day Catastrophic

Potentially lethal to a large population,

likely to have also very significant

4 Most Likely - Once per week Major

Potentially lethal to a small population,

likely to have also significant morbidity

3 Likely - Once per month Moderate

Potentially harmful to a large population

but no mortality

2 Unlikely - Once per year Minor

Potentially harmful to a small population

but no mortality

1 Rare - Once every five years Insignificant

Negligible impact in terms of severity of

disease or numbers of people affected

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Process Step Hazardous Event Hazard Likelihood Severity Score Risk Rating

Physical 2 2 4 Low

Microbial 2 2 4 Low

Failure of disinfection due to equipment breakdown

Microbial 2 3 6 Medium

Low

Disinfection

Reservoir Microbial 2 2 4

Seepage of leachate near well sources

Shortage of Chlorine at deepwell pumping station

Low

Intrusion of contaminantsdue to exposed /unsecured vent covers ofreservoir openings(animal & bird entry)

Well / Catchment

Microbial 2 2 4

A. GROUNDWATER

Hazard Identification and Risk Assessment for Groundwater

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B. DISTRIBUTION

Hazard Identification and Risk Assessment for Distribution Lines

Process Step Hazardous Event Hazard Likelihood Severity Score Risk Rating

Yellowish water due to rusted inner surface of dilapidated

storage tankPhysical 2 2 4 Low

Turbid water due to Pressure Fluctuations and intermittent

SupplyPhysical 2 3 6 Medium

Turbidity of supply after repair due to pipeline breakage Physical 4 3 12 High

Intrusion of contaminants due to sub-standard materials and

improper installation of service connection

Physical 4 3 12 High

Intrusion of contaminants in supply due to illegal connections

Physical 3 3 9 Medium

Yellowish Water due to deterioration of Steel pipes

Physical 2 2 4 Low

Consumer Premises

Intrusion of contaminants due to substandard materials, improper installation & unsafe practice at

consumer premises

Microbial 3 2 6 Medium

Storage

Distribution

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IV. DETERMINE AND VALIDATE CONTROL MEASURES, REASSESS AND PRIORITIZE THE RISKS

After identifying potential risks and hazards that may affect the quality of water being delivered to

concessionaires, the WSP team established control measures to address the identified possible risks. Each

control measure was validated to verify its efficacy based on records, data gathered and on-site assessment.

Upon validation of control measures, the risk rating for each stage of the treatment process,

storage, distribution system, down to the tap of every home was reduced. The reduction in the risk rating

achieved by each control is an indication of its effectiveness. The risks were prioritized in terms of their

likely impact to the capacity of the system to deliver safe water. High priority risks (risk rating from

medium to very high) may require system modifications or upgrade while lower priority risks (risk rating of

low) can often be minimized as part of routine good practice activities.

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Proposed Control Measure

Hazards Likelihood Severity Score Likelihood Score Rating

P 2 2 4

Wells have blank casings down to 40mbgl and

sanitary grout down to 15mbgl

Presence of seepage from septic tanks would

normally produce odor on the water; No odor

reported over the last 27 years

1 2 L

M 2 2 4

Wells have blank casings down to 40mbgl and

sanitary grout down to 15mbgl

Water analysis for the past 5 years from 23 deepwell sources does not indicate

any sign of seepage of leachate from septic tanks

1 2 L

Failure of disinfection due to equipment breakdown

M 2 3 6

All disinfection facilities are subjected to regular preventive maintenance and calibration every month aside from the regular visual inspection by operators on duty

Six occurrences of equipment breakdown for the past year for each deepwell stations

2 2 L

Installation of standby disinfection units ready to use in case of breakdown

Shortage of Chlorine at deepwell pumping station

M 2 2 4

Regular delivery of chlorine supply to various deep well pumping stations

1 incident of chlorine shortage is reported for the past year

1 2 L

Increase storage capacity of tanks in active deep well stations

Reservoir

Intrusion of contaminants due to exposed / unsecured vent covers of reservoir openings

M 2 2 4Installation of vent coverscreens and padlocks forhatches

Small animals cannot pass through vent covers; hatches are securely locked with no signs of forced entry

1 2 L

Raw Risk Residual RiskValidation of Control

Measure

Hazardous Events / Cause of

Contamination

Process Step

Control Measure

Seepage of leachate near well sources

Well / Catchment

Disinfection

A. GROUNDWATER

Identification of Hazards, Hazardous Events and Risk Assessment/Determination for Groundwater

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Hazards Likelihood

Severity Score Likelihood

Score Rating

Yellowish water due to rusted inner

surface of dilapidated storage

tank

P 2 2 4Repair Painting and

Disinfection of storage tank

No reported discoloration of water caused by rusted

storage tanks for the past 5 years

1 2 LMainainance of repaired

and disinfected Water tanks

Turbid water due to Pressure

Fluctuations and intermittent

Supply

P 2 3 6

Monitoring of pressure and maintaining

adequacy of water pressure

estimated reported 8 cases of water turbidity due to

water pressure fluctuations1 3 L

Develop additional source of water suppply & storage

facilities

Turbidity of supply after repair due to pipeline breakage

P 4 3 12Strict implementatio of SOPs in isolation and

leak repair

Instances and reports of turbid water supply are minimized in the last 2

years

2 6 L

Installation of additonal blow-offs/ hydrants for

flushing purposes & installation of pressure

reducing valves for pressure management

Intrusion of contaminants in

supply due to illegal connection

P 4 3 12Regular leak detection and Saturation Drive

illegal connections are randomly checked for a

specified area to minimize and eliminate the chance for any intrusions caused

by such

2 6 L

Eliminate or minimize illegal connections and saturate areas with high

non-revenue water reports

Yellowish water due to

deterioration of Steel pipes

P 3 3 9Rehabilitation of old and

deteriorated pipes

Minimal occurrence of iron precipitates in water supply. No reported

discoloration of water caused by rusted steel pipes

for the past 5 years

2 6 LContinuous rehabilitation of deteriorated pipelines

Consumer Premises

Intrusion of contaminants due

to substandard materials, improper

installation & unsafe practice at

consumer premises

M 2 2 4

Information and Education campaign on

standard in-house connection installation and safe water storage and handling practice

There are many Service Request (SR)/ Maintenance

Orders (MO) being received due to

substandard materials, improper installation &

unsafe practice at consumer premises

2 4 L

Intensify Information and Education campaign on

standard-in-house connection installation and

safe water storage and handling practice

Raw RiskControl Measure

Validation of Control Measure

Residual RiskProposed Control Measure

Storage

Distribution

Process StepHazardous Events

/ Cause of Contamination

B. DISTRIBUTION

Identification of Hazards, Hazardous Events and Risk Assessment/Determination for Distribution Lines

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Action Arising fromIdentified specific improvement

planAccountability/ies Due

All disinfection facilities are subjected to regular preventive

maintenance and calibration every month aside from the regular visual

inspection by operators on duty

Risk assessment indicates that equipment breakdown can lead to

failure of disinfection

Procurement of new chlorinator that will serve as stand by unit

Division Manager / Engineering division/ Procurement Officer

Last quarter of 2017

Regular delivery of chlorine supply to various deep well pumping

stations

Possibility of microbial risk due to shortage of chlorine at deepwell

pumping station

Increase capacity of chlorine storage tanks in active deep well

stations

Division Manager / Engineering division

Every Quarter of 2017

Construction of Additional Water source in areas of Lamao and Mamala

First Quarter of 2017

construction of Water storage Tanks on pump stations with no storage facility

Last Quarter of 2017

Regular Leak Detection and Illegal connection detection

Risk assessment indicates the Intrusion of contaminants in supply due to illegal connections

Saturation of Areas indicative of illegal connection and minimizing leaks by qick

responseEngineering division Every quarter of 2017

Installation of pressure reducing valves for pressure management

Turbidity of supply after repair due to pipeline breakageInstallation of Pressure Reducing Valve at

Bgy. San RoqueEngineering division Last Quarter of 2016

Manager, Engineering Department

Risk assessment indicates the possibility of turbidity of water supply due to Pressure Fluctuations and intermittent Supply

Develop additional source of water supply & storage facilities

Identified specific improvement plan DueAccountability/iesArising fromAction

V. IMPROVEMENT / UPGRADE PLAN

The WSP team created an improvement or upgrade plan for each of the identified significant risks

with no known applicable controls recognized in the reassessment of risks. These improvement measures

are also suitable for other less significant risks specified.

Each improvement/upgrade plan indicated is delegated to a particular officer or Division within

LIWAD for the requisite implementation within the specified target date. These improvement/upgrade

plans may be short, medium or long-term programs and must be monitored to ensure that improvements

made are effective.

Limay Water District is committed to allocate the required budget for these improvement plans.

A. GROUNDWATER

B. DISTRIBUTION

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Control Measure What to Monitor Where to Monitor

When to Monitor

How to Monitor Who will Monitor

Corrective Action

All disinfection facilities are subjected to regular preventive maintenance and calibration every month aside from the regular visual inspection by

operators on duty

At least 1 Spare Unit Chlorinator Stockroom Monthly Inventory Supplies officerRequest for additional

Chlorinator to serve as spare unit

Regular delivery of chlorine supply to various deep well

pumping stations

At least 1 pail of chlorine in full

Level of Chlorine Tote Bin pump stations weekly Visual Inspection

Operator on Duty

Request for delivery of Chlorine

Installation of vent cover screens and padlocks for hatches

Signs of screen deterioration and damaged

/ missing padlock

Condition of screen and padlock

All Reservoir Stations

Monthly Monitoring by Visual Inspection

Operator on Duty

Repair or Replacement of defective screen and

padlocks

Control Measure Critical Limit What Where When How Who Corrective Action

Repair, Painting & Disinfection of storage

tank

Complaints regarding water quality

Water SupplyFaucet within

facility / vicinity

DailyCollection of

Water SampleOperator on

Duty

Isolation of storage tank until rehabilitation is

completed

Strict implementation of SOPs in isolation and

leak repair.



vicinityDaily

Collection of Water Sample

Operator on Duty

Flushing at hydrant/blow offs

Regular leak detection and Saturation Drive

Increase in Non Revenue Water (NRW

> previous month NRW)

NRW Database DMA Monthly NRW AnalysisEngineering

division

Continuous Formation and monitoring of DMA

and intensify leak detection activities

Rehabilitation of old and deteriorated pipes



vicinityDaily

Collection of Water Sample

Operator on Duty

Rehabilitation of deteriorated pipelines

VI. MONITORING OF CONTROL MEASURES To ascertain the continuity of the controls, the WSP team performs monitoring activities that

defines and validates the control measures put in place and develop procedures to verify the efficacy of

such control measure.

The WSP team created a monitoring plan for the whole water supply system indicating an

acceptable critical/operational limit for each control and designated monitoring locations. A schedule for

monitoring frequency and appointed responsible part were also included in the plan.

Corrective actions were established to mitigate monitoring results showing parameters that are

outside of the acceptable “limits”. The monitoring of the control measures or operational monitoring is

documented from raw water inlet to the distribution system down to consumer premises.

A. GROUNDWATER

B. DISTRIBUTION

27 | P A G E

VII. VERIFICATION

As a guarantee that the overall system design and operation is efficient as evidenced by safe and potable

water delivered to concessionaires, the WSP team performs a verification process that involves two

activities:

1. Compliance monitoring – confirmation of compliance with water quality targets including

Internal checking of operational activities

A. INTERNAL CHECKING OF ACTIVITIES

2. Consumer satisfaction – includes checking that consumers are satisfied with the water supplied.

B. CONSUMER SATISFACTION

Verification ActivityLocation of

ActivityType of Activity

Frequency of Activity

Analyst Recipient of ResultAction on unusual/

failing result

Verification of Chlorination equipment calibration

Pumping Stations Inspection semi annual Operator on dutyManager (Engineering

Department)SOP for corrective

maintenance

Verification of deepwell history Office Database Inspection semi annual Operator on dutyManager (Engineering

Department)Well Rehabilitation/ Well

Abandonment

Verification of Pipeline Management

Office Database/Distributi

on NetworkInspection semi annual

Engineer / Field Inspector / Division

Manager

Manager (Engineering Department)

Conduct investigation on status of pipeline based on the given data and make

necessary recommendations for pipeline rehabilitation if

necessary

Verification Activity

Location of Activity

Type of ActivityFrequency of

ActivityAnalyst

Recipient of Result

Action on unusual/ failing result

Offices/Collection Office

Survey DailyCustomer Service

assistantConcerned

Division

Service Requests/Investigati

on

Offices(Frontline)Received

complaints(walk- in/hotline/e-mail)

Daily

Division Manger - Commercial division,

Customer Service assistant

Concerned Division

follow-ups

Customer Feedback

28 | P A G E

VIII. SUPPORTING PROGRAMS

The WSP team with the approval of LIWAD management formulated supporting programs to further the

delivery of safe drinking water. These programs will be coordinated and synchronized with LIWAD’s

district-wide agendas to achieve the common goal of serving all the residents of Limay province of Bataan

with equitable, reliable and immediate access to safe and potable water twenty-four hours a day at the least

possible cost.

These support activities do not directly affect water quality but are established to ensure that no additional

source of potential hazards will arise from the operating or surrounding environment and equipment used

as well as from the people, employees and visitors.

Program Purpose Specific Activity Target Date of Implementation

a. Flow Meters Quarterly

b. Water meters Quarterly

a. Electro-mechanical facility, deepwell stations

Quarterly

b. Cleaning of raw and clear water tank Annually

Hygiene and SanitationTo prevent personnel and equipment from introducing hazard to the water

b. Wearing of PPEs for personnel indirect contact with clean water

2nd quarter of 2017

a. Water Resources Facilities Operators' Course

1st quarter of 2017

b. Water Quality Management 3rd quarter of 2017

c. Understanding the Concept of Water Contamination

2nd quarter of 2017

d. Water Supply Materials Selection and Quality Assurance

4th quarter of 2017

Training

To ensure personnel familiarity and understanding

with water safety and the implications of their actions

CalibrationTo maintain accuracy and

reliability of equipment monitoring

Preventive Maintenance

To prevent unnecessary malfunctions in the process

and maintain effectiveness of strategies implemented

29 | P A G E

IX. PERIODIC REVIEW

The Water Safety Plan must and shall be reviewed at least once a year to ensure that new risks

threatening the water sources, production and distribution of safe water are regularly assessed and

addressed. An updated Water Safety Plan will ensure the employees’ and stakeholders’ confidence and

support in the WSP approach.

Succeeding the implementation of the Water Safety Plan, all procedures and records should be

verified and reviewed to confirm the diligent implementation of the plan.

Periodic checking, monitoring and reporting of factual input serves as a management decision tool

to:

a. determine if company is at risk;

b. identify areas or opportunities for improvements;

c. assess individual performance;

d. assist company staff training needs,

e. improve communication and motivation of personnel.

Additionally, there will be revisions in the WSP Team consequent of the following:

1. Career movement

2. Resignation or retirement of members

3. Change of contact numbers

4. Expansion of the WSP Team

30 | P A G E

ABBREVIATIONS

WSP - Water Safety Plan

DOH - Department of Health

PNSDW - Philippine National Standards for Drinking Water

DPWH - Department of Public Works and Highways

P E N E L C O - Peninsula Electric Company

LGU - Local Government Unit

PEO - Provincial Engineer’s Office

NRW - Non-Revenue Water

WQMS - Water Quality Management Section

WDS - Water District

WRFO - Water Resources Facilities Operator

SWUMO - Senior Water Utilities Management Officer

M PDC - Municipal Planning and Development Council

LWUA - Local Water Utilities Administration

WATER SAFETY PLAN - s3-ap-southeast...

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