Westminster, CO: 4 Health Violations — 66/100 (2026)
4 ZIP codes · 5 water systems · Updated 2026-06-03
Westminster shows moderate tap water quality for CO — some areas carry documented EPA violations while others meet standards without issues.
How Westminster Compares
Data: EPA SDWIS Last verified: 2026-06-03
What You Should Know About Westminster Water
- Your city's water systems recorded 48 violations in the past 5 years.
- Average lead level: 0.0013 mg/L.
- Estimated remediation: $2,100 per household.
- CDC health risk index: 10.98.
Who Supplies Your Water in Westminster
Throughout Westminster, CO, water comes from one of 3 primary utilities out of 5 total systems — independent providers with different rate structures, infrastructure, and compliance records that vary across the service territory.
Overview
We track water quality and home safety data for 4 ZIP codes in Westminster, Colorado (population ~52,295), covering 5 community water systems serving approximately 399,021 people region-wide.
4 of 4 ZIP codes (100%) have recorded EPA violations. 4 health-based violations documented.
Home Safety Score
Average Home Safety Score for Westminster: C (66/100)
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
Westminster water systems draw from: Groundwater, Surface water.
Lead & Copper
- Average lead level (90th percentile): 0.0013 mg/L (EPA action level: 0.015 mg/L)
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 1 (High Risk)
- Zone 1 (High): 4 ZIP codes
- Zone 2 (Moderate): 0 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 |
|---|---|---|---|
| E. coli | Microbiological | 20 | 4 |
| Lead and Copper Rule | Treatment Technique | 15 | 4 |
| Contaminant 1006 | Other | 5 | 4 |
| Total Organic Carbon | Disinfection Byproducts | 5 | 4 |
| Total Coliform | Microbiological | 5 | 4 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 80030 | C | 12 | 1 | City of Westminster |
| 80031 | C | 12 | 1 | City of Westminster |
| 80035 | C | 12 | 1 | City of Westminster |
| 80036 | C | 12 | 1 | City of Westminster |
All ZIP Codes in Westminster
- 80030 [C] — 12 violations ⚠
- 80031 [C] — 12 violations ⚠
- 80035 [C] — 12 violations ⚠
- 80036 [C] — 12 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.
Health Outcomes in Westminster
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 Westminster Water
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
Cost Context: What Remediation Means for Westminster Homeowners
At current valuations, Westminster sits in the low remediation-share tier — the equity impact of fixing documented issues is proportionally minor.
Remediation costs in Westminster are relatively low compared to home values. The $1,350–$3,000 estimated range is a small fraction of median property value. Home values are 10% above the Colorado average.
Lead Exposure Risk for Children in Westminster
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 Westminster 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.
Flood & Climate Risk in Westminster
How does Westminster's flood record connect to local water quality? The NFIP documents 35 claims — enough to signal recurring events — and 50% of ZIP codes carry FEMA flood zone status. That combination places flooding in the category of factors that can periodically affect water infrastructure, even if the area isn't among the highest-exposure communities in the NFIP dataset.
Westminster has a moderate flood history with 35 FEMA claims averaging $5,749 per payout. 50% 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>$2,100</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.
What You Can Do in Westminster
- Test your water at home. City-level data shows averages — your tap may differ. NSF-certified test kits cost $20-40 and give results in days.
- Install a certified water filter. Filters rated for E. coli can reduce the most common contaminant found in Westminster's water.
- Check your home's plumbing. Homes built before 1986 may have lead solder in pipes. A licensed plumber can assess your risk.
Deep Dive Reports
Detailed analysis for Westminster, CO