Have you tested to see whether your source water contains trace levels of pharmaceuticals?
CCWD participated in a research study through the Water Research Foundation (WaterRF) in July 2006 to determine the toxicological relevance of endocrine disrupting chemicals and pharmaceuticals in both raw source and treated water.

At that time, the District analyzed for 62 various endocrine disrupting chemicals and pharmaceuticals. Most were undetectable using current methods.

In 2009, CCWD also partnered with WaterRF, the California Department of Public Health (CDPH), and the California Department of Water Resources (DWR) to conduct research on advanced water treatment techniques and strategies that specifically target the removal of endocrine disrupting chemicals and pharmaceuticals in untreated source water. This project pilot tested existing treatment methods used at CCWD's water treatment plants as well as advanced treatment methods that may be implemented in the future. The District analyzed the removal efficiency of these methods on 12 endocrine disrupting compounds and pharmaceuticals. The study found that treatment with ozone and granular activated carbon (CCWD's existing treatment process) removed greater than 90% of the compounds tested.

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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?