Drinking Water Operator Training

January 29, 2014Davis County and Salt Lake County Health Departments

Salt Lake Valley and Davis County Health Departments

Fluoridation Regulations

Overview/History Fluoride Levels Reporting/Monitoring Operator Safety Underfeeds/Overfeeds Training

A Little History…..November 2000: Davis County voted in favor of water fluoridation September 4, 2001: Regulation signed into effect

Set optimal level at .9 control range: .8-1.4 mg/LNovember 2004: Davis County again voted in favor of water fluoridationFebruary 8, 2005: Revised Regulation signed into effect

An attempt at more uniformity with SLCoHD

June 2007: Revision of optimal level of fluorideSet optimal level to .8 control range .7-1.0 mg/L

A Little History…..

November 2010, The Annual Control Range was changed: Davis- 0.6 to 0.8 mg/L with an annual

average of 0.7 mg/L. 0.6 - 0.7- 0.8 SLVHD- 0.6 to 0.9 mg/L with an annual

average of 0.7 mg/L. 0.6 - 0.7- 0.9

A Little History…..

August 13, 2013 Better defines training requirements and

requires that documentation of training be submitted to the County by the 15th of January of each year.

Powers and Duties of Local Health Departments

ResponsibilitiesRequire fluoridation at Optimal LevelsRequire submission of reports of fluoride addition and analysisProvide Fluoride Surveillance

The regular review of monitored data and Split Sample results to ensure that fluoride levels are maintained by the Public Drinking Water Supply

Distribution samples (in addition to required Water Supply’s samples)

Monitoring (Davis)Sampling

Daily, at representative points in the Distribution SystemWhen there are several zones or areas, the sample sites can be rotated from day to day, providing the entire system is covered in one week (Davis).Monthly Split Sample

Ensures accurate testing equipment

Split Samples

One sample is split One sample is analyzed by field kit used for

compliance sampling One sample is submitted to the lab for

laboratory analysis These samples should be within 20%. If not,

a repeat is required. If still not in the range, let’s evaluate any potential issues!

Investigative Samples (Davis)

Results of samples collected by Davis County Health Department may also be taken into consideration to determine compliance.

Minimum 2 samples/month/system (Davis)Investigative samples are processed in our NELAC/State certified lab.

Compliance Compliance is determined by taking the

annual average of the field tests results taken by water system

Split sample results and the calculated dose support the validity of the field test results

2013 Fluoride Compliance Averages (Davis)

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Monitoring (Salt Lake)Fluoride concentrations, including natural and added fluoride, need to be recorded daily.

Weekly samples must be taken at representative locations through out the distribution system

Systems meeting the annual control range may reduce sampling to twice/month and each site

A monthly Split Sample result (for equipment calibration verification) must be submitted with the monthly report

Investigative Samples (Salt Lake)

The investigative samples are analyzed by SLCoHD and serve as secondary verification of fluoride concentration throughout the system.

Several samples are taken each month throughout the county at random locations

2013 Fluoride Average Salt Lake County

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Series1

Pocket Colorimeter, Fluoride Analysis

Only does fluoride SPADNS Method Factory calibrated Be aware of interfering substances

Fluoride Reagents

Interferences

Fluoride Analysis

Materials needed: Colorimeter kit Distilled Water Beakers Standards may be used to check for accuracy.

Some notes on using this method (SPADNS):

Samples may be stored in glass or plastic for at least 7 days when kept refrigerated. Watch expiration dates of reagents

Some notes on using this method (cont.):

SPADNS reagent contains enough arsenite to eliminate up to 5 mg/L chlorine

Aluminum may be an issue for surface treated water

Be sure that your meter is not getting any error codes when turned on and reagents are fresh and in good condition.

DI water quality is very important, when testing for Fluoride… first step in troubleshooting is trying another source of DI water

Some notes on using this method (cont.):

Cleanliness of sample cells is very important… Keep these items for fluoride use only. Acid wash cells after use (1:1 HCL) and rinse three times with DI water and air dry

Temperature of sample and DI water must be the same… temperature differences will affect results. Also reagent temperature should be the same.

Some notes on using this method (cont.):

If you are pipetting ,  both the reagent and the sample must be pipette… pipetting errors cause the most errors in results.

It is technically possible to get tighter results using the pipetting procedure … However many customers are able to get tighter results by switching to the AccuVac method which is less technique sensitive. Bulk SPADNS can be contaminated . Contamination is eliminated with the AccuVac.

Fluoride Compounds and Application Equipment

Plan Reviews, Evaluation of Fluoride Equipment, Fluoride Compounds, Chemical Feed Equipment and Methods

Refer to Rules for Public Drinking Water Systems, R309-535-5.  Fluoridation.

Fluoride Chemical StandardsAWWA standards and/or ANSI/NSF Standard 60

Does this meet AWWA standards and/or ANSI/NSF Standard 60 ???

New Requirements!

Operator SafetyReferences

Refer to R309-525-11 Chemical Addition, Division of Drinking WaterRefer also to R315-9 Emergency Controls, Environmental Quality, Solid and Hazardous WasteRefer also to R614 Labor Commission, Occupational Safety and Health

Operator Safety (continued)

The Material Safety Data Sheet (MSDS) Should be posted at all chemical injection sites

Spill ResponseRecommended DisposalHealth Hazard DataFirst AidSpecial ProtectionStorage

Storage of Fluoride Compounds

Prevent cross contamination• Allow enough room for storage• Separate other chemicals from fluoride

chemicals• Keep dry chemicals dry!

Bags and drums shall be stored on pallets

Liquid Chemical Storage (fluorosilicic acid)

Tanks must: … Have an overflow and a receiving basin or drain capable of receiving accidental spills or overflows, …

Fluorosilicic acid must not be allowed in the storm drains or sanitary sewer.

Vent any unsealed fluorosilicic acid containers to the atmosphere

Accidental Release

In the event of an uncontained or accidental release to the environment in excess of five gallons, operators are to

follow the “Accidental Release Measures” instructions found on the MSDS. notify the Department within 24 hours.

Liquid Spills

Use spill control pillows or dams to contain liquid from spreading

Neutralize with lime

Avoid “flushing” to public sewer or on-site septage (septic tank) system

Overfeed Requirements

Public notification may be required if fluoride levels reach 2.0 mg/L

Public notification is required if fluoride levels reach 4.0 mg/L

Overfeed Requirements

If over 2.0, notify Health Department and supervisor. Determine malfunction/repair

If over 4.0, if malfunction is not found, immediately turn off fluoridation equipment, sample throughout distribution system. After repairs are complete, with supervisor’s permission, restart

If over 10.1, as above, but restart system with both Health Department and Supervisor approvals

Underfeed Requirements

For less than 2 weeks:No action needed if equipment is off line

For 2 weeks - 6 months: Contact the Health Department in writing with

a proposed plan of action and an anticipated correction date by week three.

Required Training

A minimum 6 hour training course must be taken before operation of fluoridation equipment

Training includes:Operator safetyMaintenance/operationsFluoride chemicalsRegulatory requirements

Required Training

An ongoing training must be taken every 2 years A 3 hour course that includes:

• Operator safety• Regulatory updates/reviews• Operations/maintenance

Training Possibilities All day course typically every year though

AWWA WBWCD, usually every year CDC 6 hour training on CD (contact me for

a copy) Water Fluoridation: Principles and

Practices, in Sacramento fall course in Murfreesboro, TN

Thatcher

Water Fluoridation: Principles and Practices CDC Sponsored course Murfreesboro, Tennessee:

usually in September each year, dates have not yet been announced

Sacramento, California:February 11 to February 13, 2014http://www.cdc.gov/fluoridation/engineering/

training.htm

CDC-Sponsored Water Fluoridation Training

http://www.cdc.gov/mmwr/PDF/rr/rr4413.pdf

Contact InformationDavis County

Davis County Fluoride Regulation: http://www.daviscountyutah.gov/documents/healt

h/environmental//fluoridation_regulation.pdf Dee Jette: 801-525-5111

deejette@co.davis.ut.us Angie Jones (reports) 801-525-5115

ajones@co.davis.ut.us For spill reporting call EH emergency phone @

801-807-8872 (after hours, emergencies).

Salt Lake County Fluoride Regulation: http://www.slvhealth.org/envRegs/reg33flouridation.html

Lili Benavidez: 385-468-3898 libenavidez@slco.org

Submit monthly reports to drinkinwatersamples@slco.org

For spill reporting after hours and weekends call Emergency Response # 801-580-6681

Contact Information