State Water Board Adopts Limits for Cancer Causing 1,2,3 Trichloropropane

July 18, 2017

The State Water Resources Control Board unanimously voted  to adopt a maximum contaminant level (MCL) for a chemical known as 1,2,3-TCP in drinking water.  The contaminant is a by product in pesticides and industrial degreasers.  Almost 100 communities will be affected by the adoption of the new 5 parts per trillion MCL. Community Water Systems  and Non-Transient/Non-Community Water are required to start monitoring for the contaminant in January 2018.