The District’s water meets or exceeds all current drinking water testing requirements and regulations. The experts at the State Water Resources Control Board, Division Drinking Water (DDW) say that some people who drink water containing TCP over many years may have an increased risk of getting cancer, based on studies of laboratory animals.
A new Maximum Contaminant Level (MCL) for 1,2,3-TCP of 5 ppt was established by DDW. The new standard takes effect in 2018.
The District is currently evaluating potential treatment options for the TCP in order to utilize this important drinking water supply source. If you have additional questions about TCP and your health, you should visit the DDW’s TCP page.