Starting in 2023, large public water systems who serve 10,000 or more people will be required to sample. For the first time, medium-sized public water systems serving 3,300 to 10,000 people will be required to sample.Starting in 2023, large public water systems who serve 10,000 or more people will be required to sample. For the first time, medium-sized public water systems serving 3,300 to 10,000 people will be required to sample.
California Sets MCL for 1,2,3-TCP
As of December 14, 2017, the California Maximum Contaminant Level (MCL) for 1,2,3-Trichloropropane (1,2,3-TCP) in drinking water is 0.000005 mg/L (five parts per trillion). Pursuant to California Code of Regulations, Title 22, Section 64445, water systems must initiate quarterly monitoring for 1,2,3-TCP in the calendar quarter beginning January 2018. In addition to being certified by ELAP to perform these methods, Babcock Laboratories also has 15 years of experience with these methods under UCMR.