City of Santa Rosa is a large public water system in EPA region 9 that provides tap water for the 95401, 95404, 95405, 95409 zip codes. It has 6 facilities where the water supply was tested for 72 chemical contaminants that impact tap water quality and human health.
The maximum reported level of HAA5 (five regulated haloacetic acids) was 6.5 µg/L. The maximum reported level of Manganese was 5.7 µg/L. There were 2 contamintants found in the City of Santa Rosa water supply at levels that were above the minimum reporting level.
The latest water samples were taken on December 4th, 2024.