What have the tests shown?
CCWD sampled both raw source and treated water. The only detections the District had in the treated water were for Sulfamethoxazole (pharmaceutical), Meprobamate (pharmaceutical), Atrazine (pesticide - endocrine disrupter), Tricolsan (pharmaceutical), and Dioctyl phthalate (used to make plastics - endocrine disrupter).

It should be noted that the detection occurred at only a few nanograms per liter, or parts per trillion (ppt), for each constituent and for most components, our existing treatment process removed around 70% to 85% of what the District detected in our raw source water.

Bottom line - detection occurred at extremely low levels and should not pose any health threats. There are currently no drinking water regulations for any of these constituents, except atrazine which has an Maximum Contaminant Level (MCL) of 500 ppt.

Show All Answers

1. Have you tested to see whether your source water contains trace levels of pharmaceuticals?
2. What have the tests shown?
3. Are any of your drinking water intake sites downstream from a wastewater treatment plant?
4. How long have pharmaceuticals been in water?
5. Do pharmaceuticals pose a threat?