Santa Clarita, CA: 10 Health Violations — 76/100 (2026)
5 ZIP codes · 3 water systems · Updated 2026-06-03
Unlike many cities its size in CA, Santa Clarita keeps health-based violation rates low — systems here score at or above the state average for tap water safety, with no systemic concerns flagged in the current data set.
How Santa Clarita Compares
Data: EPA SDWIS Last verified: 2026-06-03
Water Quality Map: Santa Clarita, 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 Clarita.
Santa Clarita Water: The Quick Version
- Your city's water systems recorded 15 violations in the past 5 years.
- Average lead level: 0.0051 mg/L.
- Estimated remediation: $1,420 per household.
- CDC health risk index: 10.71.
Water Systems Serving Santa Clarita
With 3 utilities splitting service in Santa Clarita, CA, water accountability is distributed across 3 systems on the federal record.
Overview
We track water quality and home safety data for 5 ZIP codes in Santa Clarita, California (population ~62,343), covering 3 community water systems serving approximately 294,434 people region-wide.
5 of 5 ZIP codes (100%) have recorded EPA violations. 10 health-based violations documented.
Home Safety Score
Average Home Safety Score for Santa Clarita: B (76/100)
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 Clarita water systems draw from: Groundwater, Surface water.
Lead & Copper
- Average lead level (90th percentile): 0.0051 mg/L (EPA action level: 0.015 mg/L)
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 2 (Moderate Risk)
- Zone 1 (High): 0 ZIP codes
- Zone 2 (Moderate): 5 ZIP codes
- Zone 3 (Low): 0 ZIP codes
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
Top Contaminants
| Contaminant | Category | Violations | ZIPs Affected |
|---|---|---|---|
| Stage 2 DBP Rule | Treatment Technique | 12 | 5 |
| Lead | Inorganic | 6 | 5 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 91350 | B | 3 | 2 | Santa Clarita Valley Water Agency |
| 91380 | B | 3 | 2 | Los Angeles Residential Community Founda |
| 91382 | B | 3 | 2 | Los Angeles Residential Community Founda |
| 91383 | B | 3 | 2 | Los Angeles Residential Community Founda |
| 91390 | B | 3 | 2 | Santa Clarita Valley Water Agency |
All ZIP Codes in Santa Clarita
- 91350 [B] — 3 violations ⚠
- 91380 [B] — 3 violations ⚠
- 91382 [B] — 3 violations ⚠
- 91383 [B] — 3 violations ⚠
- 91390 [B] — 3 violations ⚠
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 Clarita
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 Clarita
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
Santa Clarita: Remediation Cost in Perspective
In Santa Clarita, the equity impact of remediation is proportionally small — not the kind of financial commitment that rises to the level of a genuine planning constraint, but a minor share of what most properties here are worth.
Remediation costs in Santa Clarita are relatively low compared to home values. The $630–$2,440 estimated range is a small fraction of median property value. Home values are 14% above the California average.
Protecting Children from Lead in Santa Clarita
Why children are most at risk: The CDC states there is no safe level of lead exposure for children. Children under 6 absorb lead more readily than adults, and even low levels can cause developmental delays, learning difficulties, and behavioral problems.
Lead risk in Santa Clarita appears low overall, but individual homes may differ. Testing is the only way to confirm your water's lead content.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Climate-Related Water Risk for Santa Clarita
54 FEMA flood insurance claims are on file for Santa Clarita, and 40% of local ZIP codes fall within federally designated flood zones — enough to put flood exposure on the planning radar, though short of the concentrated-risk threshold where treatment-system vulnerability becomes a primary consideration.
Santa Clarita has a moderate flood history with 54 FEMA claims averaging $3,923 per payout. 40% 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>$1,420</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 Clarita, CA