County · California
Santa Barbara County, California: drinking water records
Explore EPA records for 63 community water systems across 24 ZIP codes in Santa Barbara County, then find water-testing resources and available recent monitoring-station readings.
Data as of EPA UCMR 5 final release, August 2026 (file dated Aug 28, 2026) · EPA SDWIS 2026Q2 (file dated Jul 9, 2026). How we build these pages
Drinking-water records
EPA survey and compliance records are historical reports. UCMR 5 results are available for 15 of the 63 listed systems in this snapshot. A system with no reported PFAS detection is not a test of every tap or every contaminant.
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 in this county
All 63 active community systems in the available county records, sorted by record completeness. Scroll the table to explore more systems.
| 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 ppbbelow the action level |
| City of Santa Barbara Water Department CA4210010 | 99,323 | 205 | 0 | 0 | 0 ppbbelow the action level |
| Goleta Water District CA4210004 | 84,462 | 660 | 2 | 0 | 0 ppbbelow the action level |
| Lompoc-City Water Utility Div CA4210006 | 40,473 | 180 | 0 | 0 | 0 ppbbelow the action level |
| Golden State Water Company - Orcutt CA4210016 | 34,102 | 780 | 0 | 0 | 0 ppbbelow the action level |
| Carpinteria Valley Water District CA4210001 | 15,996 | 270 | 0 | 0 | 0 ppbbelow the action level |
| American Water O&m, LLC - Vsfb CA4210700 | 14,971 | 180 | 0 | 0 | 0 ppbbelow the action level |
| Montecito Water Dist CA4210007 | 11,962 | 540 | 0 | 0 | 0 ppbbelow the action level |
| Guadalupe Water Department CA4210003 | 8,897 | 120 | 0 | 0 | 0 ppbbelow the action level |
| Vandenberg Village Comm. Serv. Dist. CA4210017 | 7,308 | 60 | 0 | 0 | 0 ppbbelow the action level |
| Santa Ynez River Water Cons. Dist. Id#1 CA4210020 | 7,022 | 566 | 0 | 0 | 0 ppbbelow the action level |
| Solvang Water Division CA4210013 | 6,126 | 840 | 1 | 0 | 0 ppbbelow the action level |
| City of Buellton Water Division CA4210018 | 5,161 | 240 | 0 | 0 | 0 ppbbelow the action level |
| La Cumbre Mutual Water Co CA4210024 | 4,861 | 240 | 0 | 0 | 0 ppbbelow the action level |
| Mission Hills CSD CA4210019 | 3,600 | 60 | 0 | 0 | 0 ppbbelow the action level |
| El Capitan Mutual Water Company CA4200703 | 325 | 0 | 0 | 1 | 0 ppbbelow the action level |
| Saint Marie Mobile Home Park CA4200842 | 320 | 0 | 0 | 3 | 63 ppbat or above the action level |
| Ellwood Mutual Water Company CA4200693 | 186 | 0 | 0 | 1 | 0 ppbbelow the action level |
| Vista Hills Mutual Water Company CA4200848 | 75 | 0 | 0 | 1 | 0 ppbbelow the action level |
| Rolling Hills Mutual Water Company CA4200851 | 66 | 0 | 0 | 1 | 1.6 ppbbelow the action level |
| Santa Rita Water CA4200822 | 59 | 0 | 0 | 8 | 0 ppbbelow the action level |
| Lingate Lane Mutual Water Company CA4200633 | 55 | 0 | 0 | 1 | 0 ppbbelow the action level |
| Aaa Kindness Care Home CA4200969 | 45 | 0 | 0 | 1 | 0 ppbbelow the action level |
| Ray Water Company CA4200867 | 40 | 0 | 0 | 1 | 1.6 ppbbelow the action level |
| Jonata Homeowners Association CA4200814 | 30 | 0 | 0 | 1 | 3.8 ppbbelow the action level |
| Golden State Water Company - Tanglewood CA4210021 | 1,947 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Los Alamos Community Services District CA4210002 | 1,534 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Los Prietos Complex CA4200918 | 845 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Cuyama Community Services District CA4210009 | 700 | 0 | 0 | 0 | 2.2 ppbbelow the action level |
| San Vicente Water Company CA4210005 | 550 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Golden State Water Company - Lake Marie CA4210022 | 545 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Woodstock Ranch CA4200807 | 325 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Santa Ynez Rancho Estates CA4200619 | 304 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Skyline Park CA4200616 | 295 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Rancho Marcelino Water CA4200531 | 240 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Casmalia Community Services District CA4200870 | 234 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Oak Trail Estates CA4200881 | 211 | 0 | 0 | 0 | 5 ppbbelow the action level |
| Las Positas Mutual Water Company CA4200572 | 200 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Painted Cave CA4200578 | 160 | 0 | 0 | 0 | 190 ppbat or above the action level |
| Foster Road Mutual Water Company CA4200556 | 150 | 0 | 0 | 0 | 2.5 ppbbelow the action level |
| Meadowlark Ranches Mutual Water Company CA4200612 | 150 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Midland School CA4200618 | 150 | 0 | 0 | 0 | 0 ppbbelow the action level |
| East Valley Farms Mutual Water Company CA4200800 | 142 | 0 | 0 | 0 | 2.5 ppbbelow the action level |
| Sisquoc CA4200560 | 135 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Rancho Ynecita CA4200837 | 129 | 0 | 0 | 0 | 0 ppbbelow the action level |
| San Marcos Mutual Water Company CA4200580 | 120 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Bobcat Springs Mutual Water Company CA4200891 | 115 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Oak Trail Ranch CA4200802 | 102 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Montecito Sea Meadows CA4200733 | 70 | 0 | 0 | 0 | 6 ppbbelow the action level |
| Naples CA4200721 | 66 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Cachuma Village CA4200505 | 60 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Vieja Mutual Water Company CA4200702 | 60 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Alegria Domestic Mutual Water Company CA4200731 | 54 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Walking M Ranches CA4200804 | 54 | 0 | 0 | 0 | 3.4 ppbbelow the action level |
| San Augustin Mutual Water Company CA4200714 | 43 | 0 | 0 | 0 | 0 ppbbelow the action level |
| El Rancho Tajiguas CA4200924 | 40 | 0 | 0 | 0 | 3.8 ppbbelow the action level |
| Chalk Hill Estates HOA CA4200885 | 38 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Rosario Park CA4200579 | 38 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Santa Anita Mutual Water Company CA4200678 | 38 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Mesa Hills Mutual Water Company CA4200862 | 34 | 0 | 0 | 0 | 7.3 ppbbelow the action level |
| Santa Ynez Roblar Mobile Home Park CA4200827 | 25 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Cachuma Project CA4210028 | 0 | 0 | 0 | 0 | not reported |
| Central Coast Water Authority CA4210030 | 0 | 0 | 0 | 0 | not reported |
Shaded rows report lead at or above the 15 ppb action level in their latest monitoring period. EPA sets that level for the value 9 in 10 sampled homes fall at or below; reaching it requires the utility to act, and it is not a measurement of any single tap. 2 systems in this table are at or above it. What an action level means
USGS · Monitoring stations
The water, more recently.
Available station readings in Santa Barbara County, California. Each measurement keeps its time, unit and original source.
These readings describe water at a monitoring station. They do not test your tap, measure PFAS or lead, or determine whether water is safe to drink or swim in.
Recent observations load when this section comes into view.
How these readings update
We check for updates every 10 minutes while this section is visible and show supported observations from the last 48 hours. The time beside a reading is when USGS measured it; the checked time is when our service retrieved the response. We mark a reading more than 6 hours old as older. Provisional observations can change after USGS review. A missing reading does not mean zero or clean water.
Temperature, pH, dissolved oxygen, turbidity, conductivity, streamflow and water level are shown only where a station reports them. Different measurements have different units and sampling intervals. USGS data and documentation.
Your next step
Water testing, reports & local help.
Use these official directories to find your drinking-water agency, a certified laboratory and public water records. We have not yet added an individually reviewed local resource list for this county.
Official national directories
Water testing
Find your state’s private-well program
EPA’s state directory points well owners to local program information. Services and eligibility vary by state and county.
Water testing
Find a certified drinking-water laboratory
Use EPA’s directory to reach your state’s laboratory certification program. EPA does not provide on-request testing of residential drinking water.
Public records
Find your utility’s Consumer Confidence Report
EPA links to community water-system reports and explains how to read them. Look for your actual supplier rather than assuming every address in a county shares one system.
Public records
Explore USGS water observations
Find current and historical observations from USGS monitoring locations, including available stream, lake, and groundwater data. Measurements vary by station and do not replace a test of your household water.
A county overview cannot identify every property’s water provider. If you use a public water system, confirm its name on your bill and request its annual Consumer Confidence Report. Private wells need their own testing; public-system records do not describe a private well.
Understand water testing and laboratory reportsResource descriptions are compiled by Tap Water Lookup. Review dates describe our source check, not a new water sample. How we review sources · Suggest a correction
Explore your area
Local coverage in Santa Barbara County
24ZIP areas in this overview
Explore the water-system records, recent station readings and testing resources on this county page. They describe the systems and stations identified in each section; they are not a separate water test for every community.
Towns and communities
- Buellton
- Casmalia
- Eastern Goleta Valley
- Goleta
- Guadalupe
- Lompoc
- Los Alamos
- Los Olivos
- Montecito
- New Cuyama
- Orcutt
- Santa Barbara
- Santa Maria
- Santa Ynez
- Solvang
- Summerland
- Toro Canyon
- University of California-Santa Barbara
- Vandenberg AFB
View ZIP areas and understand coverage
- 93013Toro Canyon
- 93067Summerland
- 93101Santa Barbara
- 93103Santa Barbara
- 93105Santa Barbara
- 93106University of California-Santa Barbara
- 93108Montecito
- 93109Santa Barbara
- 93110Eastern Goleta Valley
- 93111Eastern Goleta Valley
- 93117Goleta
- 93254New Cuyama
- 93427Buellton
- 93429Casmalia
- 93434Guadalupe
- 93436Lompoc
- 93437Vandenberg AFB
- 93440Los Alamos
- 93441Los Olivos
- 93454Santa Maria
- 93455Orcutt
- 93458Santa Maria
- 93460Santa Ynez
- 93463Solvang
These Census ZIP Code Tabulation Areas are grouped here by their largest county overlap. A ZIP area can cross county lines and contain several water suppliers or private wells. Place labels reflect Census geography, not verified postal city names or utility service boundaries.
Records for these areas are currently presented in this county overview rather than individual ZIP reports. An unpublished report does not mean there are no water records. Confirm your supplier on your water bill; if you use a private well, testing your own well is the relevant next step.
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. Database prepared 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.
Compiled by Tap Water Lookup from the sources identified on this page. Read the methodology and review process.