County · California
Santa Barbara County, California: drinking water records
This overview covers 24 ZIP codes and 67 community water systems in Santa Barbara County. It also stands in for 0 ZIP codes whose utility has too little EPA data for a page of its own.
System population figures are summed from EPA registry records and can overlap where wholesalers and retail systems serve the same people. They are not a Census county-population estimate.
Water systems with the most complete records
| Water system | People served | PFAS survey results | PFAS found | Health-based violations | Lead, 9 in 10 homes at or below |
|---|---|---|---|---|---|
| City of Santa Maria Utilities Department CA4210011 | 109,477 | 120 | 0 | 0 | 0 ppb |
| City of Santa Barbara Water Department CA4210010 | 99,323 | 205 | 0 | 0 | 0 ppb |
| Goleta Water District CA4210004 | 84,462 | 660 | 2 | 0 | 0 ppb |
| Lompoc-City Water Utility Div CA4210006 | 40,473 | 180 | 0 | 0 | 0 ppb |
| Golden State Water Company - Orcutt CA4210016 | 34,102 | 780 | 0 | 0 | 0 ppb |
| Carpinteria Valley Water District CA4210001 | 15,996 | 270 | 0 | 0 | 0 ppb |
| American Water O&m, LLC - Vsfb CA4210700 | 14,971 | 180 | 0 | 0 | 0 ppb |
| Montecito Water Dist CA4210007 | 11,962 | 540 | 0 | 0 | 0 ppb |
| Guadalupe Water Department CA4210003 | 8,897 | 120 | 0 | 0 | 0 ppb |
| Vandenberg Village Comm. Serv. Dist. CA4210017 | 7,308 | 60 | 0 | 0 | 0 ppb |
| Santa Ynez River Water Cons. Dist. Id#1 CA4210020 | 7,022 | 566 | 0 | 0 | 0 ppb |
| Solvang Water Division CA4210013 | 6,126 | 840 | 1 | 0 | 0 ppb |
| City of Buellton Water Division CA4210018 | 5,161 | 240 | 0 | 0 | 0 ppb |
| La Cumbre Mutual Water Co CA4210024 | 4,861 | 240 | 0 | 0 | 0 ppb |
| Mission Hills CSD CA4210019 | 3,600 | 60 | 0 | 0 | 0 ppb |
| El Capitan Mutual Water Company CA4200703 | 325 | 0 | 0 | 1 | 0 ppb |
| Saint Marie Mobile Home Park CA4200842 | 320 | 0 | 0 | 3 | 63 ppb |
| Ellwood Mutual Water Company CA4200693 | 186 | 0 | 0 | 1 | 0 ppb |
| Rustic Acres MHP WI4430494 | 90 | 0 | 0 | 1 | 0.6 ppb |
| Vista Hills Mutual Water Company CA4200848 | 75 | 0 | 0 | 1 | 0 ppb |
| Rolling Hills Mutual Water Company CA4200851 | 66 | 0 | 0 | 1 | 1.6 ppb |
| Santa Rita Water CA4200822 | 59 | 0 | 0 | 8 | 0 ppb |
| Lingate Lane Mutual Water Company CA4200633 | 55 | 0 | 0 | 1 | 0 ppb |
| Aaa Kindness Care Home CA4200969 | 45 | 0 | 0 | 1 | 0 ppb |
| Ray Water Company CA4200867 | 40 | 0 | 0 | 1 | 1.6 ppb |
ZIP reports in Santa Barbara County
No ZIP report in this county is published yet.
Sources and scope
EPA UCMR 5 occurrence data, samples collected 2023-01-03 – 2026-06-17, final release, August 2026 (file dated Aug 28, 2026); EPA SDWIS via ECHO, 2026Q2 extract (file dated Jul 9, 2026); EPA service-area boundaries v3.0; Census 2020 ZCTAs. Page generated 2026-09-03.
Counts cover the systems that report this county to EPA. A water system may cross county lines. "Found" means at least one result at or above the laboratory reporting level; it is not a compliance finding.