Santa Ana, CA: 12 Violations — 84/100 (2026)
12 ZIP codes · 10 water systems · Updated 2026-06-03
In current tracking cycles, Santa Ana records above-average water quality outcomes for CA; compliance history over recent years shows few departures from federal standards and no systemic failures across its water systems.
How Santa Ana Compares
Data: EPA SDWIS Last verified: 2026-06-03
Water Quality Map: Santa Ana, CA
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Score Distribution
Distribution of water safety grades across Santa Ana.
Santa Ana Water: The Quick Version
- Your city's water systems recorded 12 violations in the past 5 years.
- Estimated remediation: $1,255 per household.
- CDC health risk index: 10.23.
Water Systems Serving Santa Ana
Multiple utilities divide Santa Ana, CA's water service — 3 leading providers among 10 on the federal register.
Overview
We track water quality and home safety data for 12 ZIP codes in Santa Ana, California (population ~335,987), covering 10 community water systems serving approximately 1,446,629 people region-wide.
12 of 12 ZIP codes (100%) have recorded EPA violations. All violations are monitoring/reporting type.
Home Safety Score
Average Home Safety Score for Santa Ana: B (84/100)
The score combines three factors:
| Factor | What It Measures |
|---|---|
| Water Quality | EPA violations and compliance history |
| Lead Levels | 90th percentile lead concentration vs EPA action level |
| Radon Risk | EPA radon zone classification |
Water Sources
Santa Ana water systems draw from: Surface water.
Lead & Copper
- Lead data: not yet available for Santa Ana
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 3 (Low Risk)
- Zone 1 (High): 0 ZIP codes
- Zone 2 (Moderate): 0 ZIP codes
- Zone 3 (Low): 12 ZIP codes
Top Contaminants
| Contaminant | Category | Violations | ZIPs Affected |
|---|---|---|---|
| Consumer Confidence Report Rule | Reporting | 13 | 12 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 92701 | A | 1 | 0 | City of Santa Ana |
| 92702 | A | 1 | 0 | City of Santa Ana |
| 92703 | B | 1 | 0 | City of Santa Ana |
| 92704 | B | 1 | 0 | City of Santa Ana |
| 92705 | B | 1 | 0 | City of Santa Ana |
| 92706 | B | 1 | 0 | City of Santa Ana |
| 92707 | B | 1 | 0 | City of Santa Ana |
| 92711 | A | 1 | 0 | City of Santa Ana |
| 92712 | A | 1 | 0 | City of Santa Ana |
| 92725 | A | 1 | 0 | City of Santa Ana |
All ZIP Codes in Santa Ana
- 92701 [A] — 1 violation
- 92702 [A] — 1 violation
- 92703 [B] — 1 violation
- 92704 [B] — 1 violation
- 92705 [B] — 1 violation
- 92706 [B] — 1 violation
- 92707 [B] — 1 violation
- 92711 [A] — 1 violation
- 92712 [A] — 1 violation
- 92725 [A] — 1 violation
- 92735 [A] — 1 violation
- 92799 [A] — 1 violation
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- Lead/copper: EPA Lead and Copper Rule sampling data
- Radon: EPA Map of Radon Zones
Updated daily.
CDC Health Data for Santa Ana
Source: CDC PLACES (County-level estimates). Water contamination can correlate with respiratory and chronic health conditions.
Compared to National Average
Vertical line = national average. ■ Above national · ■ Below national
Key Contaminants Detected in Santa Ana
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
Santa Ana: Remediation Cost in Perspective
Across Santa Ana, the equity share taken up by estimated remediation is small — a favorable ratio for most property owners.
Remediation costs in Santa Ana are relatively low compared to home values. The $836–$1,782 estimated range is a small fraction of median property value. Home values are 13% below the California average.
Climate-Related Water Risk for Santa Ana
42% of ZIP codes in Santa Ana are mapped into FEMA-designated flood zones, and the NFIP records 447 claims reflecting a multi-event flood history. That combination places local flood exposure in the range where water-quality implications deserve at least periodic attention.
Santa Ana has a moderate flood history with 447 FEMA claims averaging $3,828 per payout. 42% of ZIP codes fall within FEMA flood zones. Flood events can contaminate drinking water and overwhelm treatment systems.
How flooding affects water quality: Flood events can introduce sewage, agricultural runoff, and industrial chemicals into water supplies. Even after floodwaters recede, contamination can persist in wells and aging infrastructure. Flood damage can add significantly to the estimated <strong>$1,255</strong> remediation cost per household.
Residents in flood-prone areas should consider flood insurance even outside FEMA zones — over 25% of flood claims come from low-to-moderate risk areas. After any flood event, test your water before drinking.
Source: FEMA National Flood Insurance Program (NFIP) claims data, FEMA flood zone designations.
Deep Dive Reports
Detailed analysis for Santa Ana, CA