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Counties → California

Santa Barbara County, California

SDWIS compliance plate

Sheet CA083 · Santa Barbara County 152 sys · 2,187 viol · #144/3254

VIOL-SEVERE · HEALTH-MID · RANK-TOP · PHOTO-FINISH · PFAS-LOW · SRC-GW · SYS-LARGE · BOOK-FULL

  • VIOL-SEVERE 86.2% flagged
  • HEALTH-MID 35.8% health
  • RANK-TOP #144/3254
  • PHOTO-FINISH ±0.0 pp
  • PFAS-LOW 13.3% detect
  • SRC-GW GW lead 82%
  • SYS-LARGE 152 systems
  • BOOK-FULL 7/7 fields

Nearest flagged-rate peer: Colusa County (+ 0 pp flagged-rate)

According to EPA SDWIS county population served used on /counties, Santa Barbara County ranks #144 of 3,254 counties by people served, and #17 of 58 counties in California. See methodology · corpus placement.

Santa Barbara County standing, lower-flagged corpus third

Flagged-system rate 86.2% is at or below the corpus lower third (≤ 92.7% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 35.8% is health-based share above the upper third (> 24.5%) . UCMR5 detect rate 13.3% is UCMR5 detect rate in the tested-pool middle third (≤ 33.3%) . Population served ranks #144 of 3,254 · #17 of 58 in California.

Flagged-rate neighbourhood around Santa Barbara County

Lowest/highest poles plus in-state counties nearest Santa Barbara County on % of SDWIS systems with ≥1 violation. Full ladder: /counties.

0% 20% 40% 60% 80% 100% Alpine · lowest Santa Barbara · this county Sutter · highest 70% 85.7% 86.1% 86.2% 86.2% 86.7% 97.1%

Source: EPA SDWIS (county aggregates) As of 2026-05-15

Water Systems

System Name Population Violations PFAS
City of Santa Maria Utilities Department 109,477 13 Clean
City of Santa Barbara Water Department 98,872 9 Clean
Goleta Water District 84,462 22 Detected
Lompoc-City Water Utility Div 40,473 8 Clean
Golden State Water Company - Orcutt 34,102 2 Clean
Carpinteria Valley Water District 15,996 10 Clean
American Water O&m, LLC - Vsfb 14,971 17 Clean
Montecito Water Dist 11,962 10 Clean
Guadalupe Water Department 8,897 17 Clean
Vandenberg Village Comm. Serv. Dist. 7,308 2 Clean
Santa Ynez River Water Cons. Dist. Id#1 7,022 27 Clean
Solvang Water Division 6,126 38 Detected
City of Buellton Water Division 5,161 13 Clean
La Cumbre Mutual Water Co 4,861 7 Clean
Cal Trans - Gaviota Rsr 4,690 6 -
Mission Hills Csd 3,600 6 Clean
Golden State Water Company - Tanglewood 1,947 0 -
Los Alamos Community Services District 1,534 6 -
Nojoqui Falls County Park 1,502 10 -
Rancho Maria Golf Course 1,000 9 -
La Purisima Golf Course 1,000 5 -
Lake Cachuma County Park 1,000 2 -
Rsm Resort LLC 1,000 8 -
Gatehouse Tasting Room at Bien Nacido 950 0 -
El Capitan Beach State Park 915 2 -
Windset Farms Greenhouses 900 12 -
Jalama Beach Park 882 10 -
Refugio State Beach 855 2 -
Los Prietos Complex 845 13 -
Cuyama Community Services District 700 61 -
Arctic Cold 623 0 -
Bonita School 589 10 -
Dierberg/Star Lane Vineyard 550 0 -
San Vicente Water Company 550 48 -
Golden State Water Company - Lake Marie 545 0 -
White Lotus 503 0 -
Rancho Alegre 500 2 -
Valley Pacific Petroleum Services 500 0 -
Pence Vineyards 460 1 -
Rancho Oso 416 12 -
Fess Parker Winery 415 2 -
Lo-Fi Winery 413 4 -
South Coast Inn 339 2 -
El Capitan Mutual Water Company 325 20 -
Woodstock Ranch 325 2 -
Saint Marie Mobile Home Park 320 29 -
Shepherd of the Valley 320 12 -
Las Cruces State Park 306 2 -
Santa Ynez Rancho Estates 304 2 -
Skyline Park 295 21 -

Compare beyond California

Lower-flagged peers for Santa Barbara County

Cross-state counties nearest Santa Barbara County on flagged-system share (86.2%) and cumulative violation count (2,187). In-state neighbours stay on the compliance plate above.

Similar flagged-system rate

Nearest cross-state counties by % of SDWIS systems with at least one violation on record.

4 peers

Similar violation load

Nearest cross-state counties by cumulative SDWIS violation count (all systems in the county).

4 peers

Read our methodology · Check your water system - how this data is sourced, computed, and verified.

Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater

Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. This page draws directly on EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.