Santa Barbara County, California
41 ZIP codes · Avg score 63/100 · Grade C · Updated 2026-06-04
Water safety in Santa Barbara County is uneven — some of its 41 ZIP codes meet standards cleanly while others carry documented violations.
How Santa Barbara County Compares
How Santa Barbara County Compares
Santa Barbara County scores 10 points below the California state average (73/100) and 5 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-04
ZIP Code Risk Map
Water Quality Map: Santa Barbara County, California
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 10.9 (asthma 9.7%, diabetes 10.8%)
Estimated additional annual cost per homeowner: $1,942, driven primarily by wildfire
Infrastructure: 0.339% avg pipe failure probability, 28% of ZIPs at high risk
Violation History (2021–2025)
→ Stable trendEPA violation counts by year across Santa Barbara County water systems. Health-based shown in red, total in blue.
Peak year: 2022 with 15 violations. Past 5 years: 46 total (46 health-based).
Source: EPA SDWIS historical violations. Data may lag 6–12 months for the most recent year.
County Health Indicators vs National Average
Black markers indicate national averages. Source: CDC PLACES, Census ACS.
Infrastructure Overview
Sources: Census ACS (housing age), EPA SDWIS (infrastructure risk model), state bridge inspection data.
Compound Risk Breakdown
Estimated additional annual cost per homeowner: $1,942
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Water Safety Affordability
How much it costs to fix water issues relative to home values in Santa Barbara County
Remediation costs are relatively manageable for most homeowners in Santa Barbara County, representing a small fraction of property value.
Remediation includes water filtration, lead abatement, radon mitigation, and flood protection where applicable. Source: Census ACS, EPA SDWIS.
Health Outcomes vs National Average
CDC PLACES data for Santa Barbara County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water Systems with Most Violations
Top 5 systems in Santa Barbara County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | City of Santa Maria Utilities Department | 109,477 | 25 |
| 2 | Foster Road Mutual Water Company | 150 | 25 |
| 3 | East Valley Farms Mutual Water Company | 142 | 25 |
| 4 | Sisquoc | 135 | 25 |
| 5 | Las Colinas Road & Water Assn | 70 | 25 |
44 total water systems serve Santa Barbara County.
All ZIP Codes in Santa Barbara County
41 ZIP codes tracked in Santa Barbara County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 93014 | Carpinteria | 70 | B | 0 | — |
| 2 | 93436 | Lompoc | 70 | B | 0 | $460K |
| 3 | 93440 | Los Alamos | 70 | B | 0 | $672K |
| 4 | 93254 | New Cuyama | 69 | C | 2 | $216K |
| 5 | 93102 | Santa Barbara | 68 | C | 1 | — |
| 6 | 93111 | Santa Barbara | 68 | C | 1 | $1171K |
| 7 | 93437 | Lompoc | 66 | C | 0 | — |
| 8 | 93438 | Lompoc | 66 | C | 0 | — |
| 9 | 93455 | Santa Maria | 66 | C | 5 | $573K |
| 10 | 93458 | Santa Maria | 66 | C | 5 | $460K |
| 11 | 93441 | Los Olivos | 65 | C | 0 | $1344K |
| 12 | 93460 | Santa Ynez | 65 | C | 0 | $1188K |
| 13 | 93106 | Santa Barbara | 64 | C | 1 | — |
| 14 | 93107 | Santa Barbara | 64 | C | 1 | — |
| 15 | 93120 | Santa Barbara | 64 | C | 1 | — |
| 16 | 93121 | Santa Barbara | 64 | C | 1 | — |
| 17 | 93130 | Santa Barbara | 64 | C | 1 | — |
| 18 | 93140 | Santa Barbara | 64 | C | 1 | — |
| 19 | 93150 | Santa Barbara | 64 | C | 1 | — |
| 20 | 93160 | Santa Barbara | 64 | C | 1 | — |
| 21 | 93190 | Santa Barbara | 64 | C | 1 | — |
| 22 | 93109 | Santa Barbara | 63 | C | 1 | $1836K |
| 23 | 93110 | Santa Barbara | 63 | C | 1 | $1101K |
| 24 | 93427 | Buellton | 62 | C | 3 (2 health) | $763K |
| 25 | 93434 | Guadalupe | 62 | C | 0 | $454K |
| 26 | 93456 | Santa Maria | 62 | C | 5 | — |
| 27 | 93457 | Santa Maria | 62 | C | 5 | — |
| 28 | 93116 | Goleta | 61 | C | 2 (1 health) | — |
| 29 | 93118 | Goleta | 61 | C | 2 (1 health) | — |
| 30 | 93199 | Goleta | 61 | C | 2 (1 health) | — |
| 31 | 93454 | Santa Maria | 61 | C | 5 | $478K |
| 32 | 93463 | Solvang | 61 | C | 4 (1 health) | $1044K |
| 33 | 93464 | Solvang | 61 | C | 4 (1 health) | — |
| 34 | 93013 | Carpinteria | 60 | C | 0 | $1075K |
| 35 | 93101 | Santa Barbara | 58 | C | 1 | $1122K |
| 36 | 93103 | Santa Barbara | 58 | C | 1 | $1556K |
| 37 | 93105 | Santa Barbara | 58 | C | 1 | $1497K |
| 38 | 93117 | Goleta | 56 | C | 2 (1 health) | $1022K |
| 39 | 93067 | Summerland | 53 | D | 0 | $1597K |
| 40 | 93108 | Santa Barbara | 53 | D | 1 | $2000K |
| 41 | 93429 | Casmalia | 53 | D | 1 | — |
Recommended Buyer Guides for Santa Barbara County
Four sources — EPA, NSF, FEMA, CDC — drive the match.
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant removal at the kitchen tap
- Best Radon Test Kits — EPA Radon Zone 1 (highest risk) dominant in county
- Best HEPA Air Purifiers for Wildfire Smoke — Wildfire is the top compound risk factor
Deep Dive Reports
Detailed analysis for Santa Barbara County, California
Overview
Santa Barbara County in California covers 41 ZIP codes with an average Home Safety Score of C (63/100).
31 of 41 ZIP codes have recorded EPA violations. 8 health-based violations have been documented.
← Back to California water quality report
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- Home values: U.S. Census Bureau ACS (median estimates by ZCTA)
Updated daily.