
Santa Rosa, California | Municipal Water Utility Company | Public Service Announcement
The local tap water in the City of Santa Rosa may be compromised by several harmful contaminants including Haloacetic acids (HAA5), Vinyl chloride, 1,2-Dibromo-3-chloropropane (DBCP) and o-Xylene, while also experiencing unusually elevated levels of water hardness. City of Santa Rosa provides municipal water to residents sourced from local Groundwater supplies.
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City of Santa Rosa Area Details

Area served:
Santa Rosa, California

Population served:
170720

Water source:
Groundwater

Phone:
800-426-4791

Address:
100 Santa Rosa Avenue, Santa Rosa, CA 95404

3date
Contaminants Detected In Santa Rosa, California
Bromodichloromethane; Chloroform; Chromium (hexavalent); Dibromochloromethane; Dichloroacetic acid; Total trihalomethanes (TTHMs); Trichloroacetic aci… more

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City of Santa Rosa
Annual Municipal Water Report
List of Municipal Water Contaminants Tested by City of Santa Rosa
Tested But Not Detected:
1,1,1,2-Tetrachloroethane; 1,1,1-Trichloroethane; 1,1,2,2-Tetrachloroethane; 1,1,2-Trichloroethane; 1,1-Dichloroethane; 1,1-Dichloroethylene; 1,1-Dichloropropene; 1,2,3-Trichlorobenzene; 1,2,3-Trichloropropane; 1,2,4-Trichlorobenzene; 1,2,4-Trimethylbenzene; 1,2-Dibromo-3-chloropropane (DBCP); 1,2-Dichloroethane; 1,2-Dichloropropane; 1,3,5-Trimethylbenzene; 1,3-Butadiene; 1,3-Dichloropropane; 1,3-Dichloropropene; 1,4-Dioxane; 17-beta-Estradiol; 2,2-Dichloropropane; 2,3,7,8-TCDD (Dioxin); 2,4,5-T; 2,4,5-TP (Silvex); 2,4-D; 2,4-DB; 3-Hydroxycarbofuran; 4-Androstene-3,17-dione; Acenaphthylene; Acifluorfen (Blazer); Alachlor (Lasso); Aldicarb; Aldicarb sulfone; Aldicarb sulfoxide; Aldrin; Aluminum; Ametryn; Antimony; Asbestos; Atrazine; Bentazon (Basagran); Benzene; Benzo[a]anthracene; Benzo[a]pyrene; Benzo[b]fluoranthene; Benzo[g,h,i]perylene; Benzo[k]fluoranthene; Beryllium; Bromobenzene; Bromochloromethane; Butachlor; Butyl benzyl phthalate; Butylate; Cadmium; Carbaryl; Carbofuran; Carbon tetrachloride; Chlordane; Chlorodifluoromethane; Chloroethane; Chloroneb; Chlorpropham; Chlorpyriphos; Chrysene; cis-1,2-Dichloroethylene; cis-1,3-Dichloropropene; Cobalt; Combined uranium; Cyanide; Cycloate; Dalapon; DCPA mono- and di-acid degradates; Di(2-ethylhexyl) adipate; Di(2-ethylhexyl) phthalate; Di-n-butyl phthalate; Dibenz[a,h]anthracene; Dibromomethane; Dicamba; Dichlorodifluoromethane; Dichloromethane (methylene chloride); Dichlorprop; Diethyl phthalate; Dimethyl phthalate; Dinoseb; Diphenamide; Diquat; Endothall; Endrin; Equilin; Estriol; Estrone; Ethinyl estradiol; Ethyl tert-butyl ether; Ethylbenzene; Ethylene dibromide; Fluorene; Glyphosate; Heptachlor; Heptachlor epoxide; Hexachlorobenzene (HCB); Hexachlorobutadiene; Hexachlorocyclopentadiene; Hexachloroethane; Indeno[1,2,3-cd]pyrene; Isopropyl ether; Isopropylbenzene; Lindane; m- & p-Xylene; m-Dichlorobenzene; Mercury (inorganic); Methomyl; Methoxychlor; Methyl ethyl ketone; Methyl isobutyl ketone; Metolachlor; Metribuzin; Molinate; Monobromoacetic acid; Monochloroacetic acid; Monochlorobenzene (chlorobenzene); MTBE; n-Butylbenzene; N-Nitrosodimethylamine (NDMA); n-Propylbenzene; Naphthalene; Napropamide; Nitrate; Nitrite; o-Chlorotoluene; o-Dichlorobenzene; o-Xylene; Oxamyl (Vydate); p-Chlorotoluene; p-Dichlorobenzene; p-Isopropyltoluene; Paraquat; Pentachlorophenol; Perchlorate; Perfluorobutane sulfonate (PFBS); Perfluoroheptanoic acid (PFHPA); Perfluorohexane sulfonate (PFHXS); Perfluorononanoic acid (PFNA); Perfluorooctane sulfonate (PFOS); Perfluorooctanoic acid (PFOA); Permethrin; Phenanthrene; Picloram; Polychlorinated biphenyls (PCBs); Prometryn; Propachlor; Propazine; Pyrene; sec-Butylbenzene; Selenium; Silver; Simazine; Simetryn; Styrene; Terbutryn; tert-Amyl methyl ether; tert-Butyl alcohol; tert-Butylbenzene; Testosterone; Tetrachloroethylene (perchloroethylene); Thallium; Thiobencarb; Toluene; Toxaphene; trans-1,2-Dichloroethylene; trans-1,3-Dichloropropene; Triadimefon; Trichloroethylene; Trichlorofluoromethane; Trichlorotrifluoroethane; Trifluralin; Vinyl chloride; Xylenes (total)

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City of Santa Rosa
About Us
The Russian River Watershed serves approximately 600,500 residents across Sonoma, Mendocino and Marin Counties. This vital ecosystem supports about 35 fish species, with three listed as threatened or endangered: Chinook salmon, coho salmon, and steelhead trout.
Water for the Russian River Watershed comes from three primary reservoirs:
- Lake Mendocino on the East Fork of the Russian River
- Lake Sonoma on Dry Creek
- Lake Pillsbury on the Eel River (flowing into Lake Mendocino via PG&E's Potter Valley Hydroelectric Project)
These reservoirs and local groundwater wells supply water for multiple purposes: drinking, fire protection, agriculture, industry, and habitat for aquatic wildlife. The Russian River itself begins in Mendocino County about 15 miles north of Ukiah and meets the Pacific Ocean at Jenner, just 20 miles west of Santa Rosa.
Water typically enters the watershed as rainfall, then either flows to streams, rivers, and reservoirs or percolates into the ground to replenish groundwater supplies. The Sonoma County Water Agency (SCWA) collects water from the Russian River for most of the southern watershed using six collector wells extending approximately 80 feet below the riverbed. As water is collected, it naturally filters through layers of sand, gravel and rock.
Water from these deep collector wells requires minimal treatment - only chlorine for disinfection and sodium hydroxide to adjust pH levels, which helps reduce corrosion of lead and copper plumbing fixtures. This water reaches your tap through a complex distribution network, with the SCWA aqueduct system being the largest component. State law mandates regular testing to ensure water quality meets or exceeds standards at your tap.

For more information on your municipal water, visit the U.S. Environmental Protection Agency:
City of Santa Rosa Municipal Water Company and EPACity of Santa Rosa Municipal Water Report Info
Santa Rosa represents the ultimate gateway to Northern California's hidden treasures. The region offers endless outdoor recreation opportunities under perfect Northern California sunshine, from coastal adventures to inland explorations. The city boasts a sophisticated cultural scene at the forefront of everything from craft brewing to farmers markets.
Known as America's cycling hub for both road and mountain biking enthusiasts, Santa Rosa delivers authentic culinary experiences without pretension. While centrally located in wine country, the area maintains a vibrant urban culture with diverse activities. Santa Rosa perfectly suits those seeking adventures beyond the ordinary, combining natural beauty with modern amenities.
Municipal Water Utility Company FAQ

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City of Santa Rosa provides municipal water services to the public of Santa Rosa and Santa Rosa, California.
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