How does EBMUD monitor THMs in the water?

EBMUD tests for THMs as part of routine testing in our distribution system throughout the year. Samples are taken from 16 different locations each quarter. Individual numbers can vary widely due to many factors. In 2019 the system average was 44 parts per billion (ppb), under the state and federal limit of 80 ppb.

We regularly report these levels to the State Water Resources Control Board Division of Drinking Water, as well as in our Annual Water Quality Report (AWQR) available to the public.