City of Santa Rosa (CA) Water Quality

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.

Contaminants

1,1-dichloroethane (4)

1,2,3-trichloropropane (4)

1,3-butadiene (4)

1,4-dioxane (4)

1-butanol (4)

11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (4)

17-alpha-ethynylestradiol (4)

17-beta-estradiol (4)

1H,1H,2H,2H-perfluorodecane sulfonic acid (4)

1H,1H,2H,2H-perfluorohexane sulfonic acid (4)

1H,1H,2H,2H-perfluorooctane sulfonic acid (4)

2-methoxyethanol (4)

2-propen-1-ol (Allyl Alcohol) (4)

4,8-dioxa-3H-perfluorononanoic acid (4)

4-androstene-3,17-dione (4)

9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid (4)

alpha-hexachlorocyclohexane (4)

bromochloromethane (Halon 1011) (4)

bromomethane (4)

Butylated Hydroxyanisole (4)

chlorate (8)

chlorodifluoromethane (HCFC-22) (4)

chloromethane (4)

chlorpyrifos (4)

chromium (8)

chromium-6 (8)

cobalt (8)

dimethipin (4)

equilin (4)

estriol (4)

estrone (4)

ethoprop (4)

Germanium (4)

HAA5 (five regulated haloacetic acids) (4)

HAA6Br (six brominated haloacetic acids) (4)

HAA9 (nine haloacetic acids) (4)

hexafluoropropylene oxide dimer acid (GenX) (4)

lithium (4)

Manganese (4)

molybdenum (8)

N-ethyl perfluorooctanesulfonamidoacetic acid (4)

N-methyl perfluorooctanesulfonamidoacetic acid (4)

nonafluoro-3,6-dioxaheptanoic acid (4)

o-toluidine (4)

oxyfluorfen (4)

perfluoro(2-ethoxyethane)sulfonic acid (4)

perfluoro-3-methoxypropanoic acid (4)

perfluoro-4-methoxybutanoic acid (4)

perfluorobutanesulfonic acid (8)

perfluorobutanoic acid (4)

perfluorodecanoic acid (4)

perfluorododecanoic acid (4)

perfluoroheptanesulfonic acid (4)

perfluoroheptanoic acid (8)

perfluorohexanesulfonic acid (8)

perfluorohexanoic acid (4)

perfluorononanoic acid (8)

perfluorooctanesulfonic acid (8)

perfluorooctanoic acid (8)

perfluoropentanesulfonic acid (4)

perfluoropentanoic acid (4)

perfluorotetradecanoic acid (4)

perfluorotridecanoic acid (4)

perfluoroundecanoic acid (4)

profenofos (4)

quinoline (4)

strontium (8)

tebuconazole (4)

testosterone (4)

Total Permethrin (4)

tribufos (4)

vanadium (8)

Sampling Facilities

Wohler Site
Ground Water (GW)

Wohler Site Treated (9th & Wilson)Entry Point to the Distribution System (EP)

Famers Lane Wells 1 & 2 TP
Ground Water (GW)

Famers Lane Wells 1 & 2 TP Eff.Entry Point to the Distribution System (EP)

3836 Skyfarm Dr #114
Ground Water (GW)

3836 Skyfarm Dr #114Distribution System (DS)

301 East Todd Rd #009
Ground Water (GW)

301 East Todd Rd #009Distribution System (DS)

7903 Oakmont Dr WSS050
Ground Water (GW)

7903 Oakmont DrMaximum Residence Time (MR)

Distribution System
Ground Water (GW)

Matanzas Elem Sch. #074 (Farm MR)Maximum Residence Time (MR)

FAQ

Is City of Santa Rosa tap water safe to drink?

When was City of Santa Rosa last tested for water contamination?

The latest water samples were taken on December 4th, 2024.