Total Dissolved SolidsTotal Dissolved Solids

Rebecca Klipner-DanzRebecca Klipner-Danz

Anna WilliamsAnna Williams

What Does the TDS Test Tell Us What Does the TDS Test Tell Us About the StreamAbout the Stream

total dissolved solids is the amount of total dissolved solids is the amount of dissolved material in the waterdissolved material in the water

What Environmental Factors Cause What Environmental Factors Cause Unhealthy TDS LevelsUnhealthy TDS Levels

Humans increase TDS levels in waterwaysHumans increase TDS levels in waterways Runoff from urban areas like salt, Runoff from urban areas like salt,

fertilizers, and many other materialsfertilizers, and many other materials Wastewater treatment plants may dump Wastewater treatment plants may dump

the dissolved organic material and add the dissolved organic material and add nitrogen and phosphorusnitrogen and phosphorus

What TDS Levels are Considered What TDS Levels are Considered Healthy?Healthy?

Your drinking water has about 500 mg/L Your drinking water has about 500 mg/L TDS so that is a healthy TDS levelTDS so that is a healthy TDS level

Rain water has a low TDS level of about Rain water has a low TDS level of about 10 or below10 or below

Rivers Typically have TDS levels of 100 to Rivers Typically have TDS levels of 100 to 2000 mg/L2000 mg/L

MessageMessage

TipsTips Don’t put to much fertilizer or pesticides on Don’t put to much fertilizer or pesticides on

your lawn your lawn Try car pulling or ride your bike or walk to Try car pulling or ride your bike or walk to

more places.more places.