The District sampled for PFAS compounds during rounds 3 and 5 as we were required by the Environmental Protection Agency unregulated contaminant monitoring rule.

UCMR3 sampling was carried out in 2015 and UCMR5 was in 2023. During both events two sets of samples were collected several months apart.

The results for all 4 samples came back lower than the limit the EPA is proposing which is 4 parts per trillion. The District has been using reverse osmosis technology exclusively to treat our water for more than eight years.

For more information on PFAS please visit: PFAS Explained | US EPA