Lancaster, CA: 20 Health Violations - Home Safety 71/100
6 ZIP codes · 12 water systems · Updated
ZipCheckup grade for Lancaster: B.
This ZIP looks solid, with a few items worth a quick check.
Your top priority: consider a certified water filter (20 health violations on record). NSF certified filters →
Based on current monitoring, Lancaster holds an above-average drinking water safety record for CA - violations are infrequent and typically minor when they do appear.
How Lancaster Compares
Data: EPA SDWIS
What You Should Know About Lancaster Water
- Your city's water systems recorded 33 violations in the past 5 years.
- Average lead level: 0.0032 mg/L.
- Estimated remediation: $1,600 per household.
- CDC health risk index: 10.71.
Who Supplies Your Water in Lancaster
Structurally, Lancaster, CA's water supply is divided. Federal data identifies 12 water systems in the area, with 3 providers serving the bulk of residential connections. These utilities operate independently, meaning rate-setting authority and EPA compliance accountability are distributed rather than centralized.
- B
- B
- B
Overview
We track home safety data for 6 ZIP codes in Lancaster, California, covering 12 community water systems serving approximately 194,781 people. The EPA snapshots used for this build directly map water systems to 3 of 6 ZIP codes.
3 of 3 ZIP codes with a reported violation count in the available EPA record (100%) have recorded EPA violations. 20 health-based violations appear in the available health breakdown.
Home Safety Score
Average Home Safety Score for Lancaster: B (71/100)
Model 4.0.0 uses four measured components across three equally weighted domains. If a required domain is unavailable, no score is published:
| Factor | What It Measures |
|---|---|
| Water Quality | EPA violations and compliance history |
| PFAS MCL Screen | UCMR 5 testing against the covered federal MCLs |
| Radon Risk | EPA radon zone classification |
| Annual AQI | EPA AirData county-year median with at least 90 observed days |
Water Sources
Lancaster water systems draw from: Groundwater, Surface water.
Lead & Copper
- Average lead level (90th percentile): 0.0032 mg/L (EPA action level: 0.015 mg/L)
- 0 of 3 ZIP codes with known status exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 2 (Moderate Risk)
- Zone 1 (High): 0 ZIP codes
- Zone 2 (Moderate): 6 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 |
|---|---|---|---|
| Barium | Inorganic | 54 | 2 |
| Total Trihalomethanes (TTHM) | Disinfection Byproducts | 8 | 2 |
| Haloacetic Acids (HAA5) | Disinfection Byproducts | 8 | 2 |
| Stage 1 DBP Rule | Treatment Technique | 4 | 1 |
| Stage 2 DBP Rule | Treatment Technique | 4 | 2 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 93534 | B | 29 | 19 | Los Angeles Cwwd 40 Reg 4 & 34 Lancaster |
| 93536 | B | 25 | 19 | Los Angeles Cwwd 40 Reg 4 & 34 Lancaster |
| 93535 | B | 4 | 1 | Los Angeles Cwwd 40 Reg 4 & 34 Lancaster |
All ZIP Codes in Lancaster
- 93534 [B] - 29 violations ⚠
- 93535 [B] - 4 violations ⚠
- 93536 [B] - 25 violations ⚠
- 93539
- 93584
- 93586
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
Reporting periods vary by source. Missing data is shown as unavailable, not as zero.
Health Outcomes in Lancaster
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
Top Contaminants in Lancaster Water
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
Cost Context: What Remediation Means for Lancaster Homeowners
Equity impact data for Lancaster lands in the favorable tier - remediation claims a small slice of what properties here are worth.
Remediation costs in Lancaster are relatively low compared to home values. The $700–$3,200 estimated range is a small fraction of median property value. Home values are 54% below the California average.
Lead Exposure Risk for Children in Lancaster
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 Lancaster 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.
Historical NFIP Claim Context in Lancaster
Historical NFIP data for Lancaster contains 43 flood insurance claims. Among claims with payment data, the average reported building, contents, and ICC component sum is $25,759. Among ZIP codes with claim records, 33% have an A- or V-family dominant rated zone recorded in those historical claims. This is not a complete current FEMA property-map inventory.
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. The <strong>$1,600</strong> remediation estimate shown here excludes flood insurance and is not derived from NFIP claim count.
Claim count does not establish current property risk. Check the exact address in FEMA's current map and obtain a property-specific insurance quote when relevant.
Source: historical FEMA National Flood Insurance Program (NFIP) claim records. No current FEMA property-map designation is asserted.
Deep Dive Reports
Detailed analysis for Lancaster, CA