Greeley, CO: 30 Violations — 62/100 (2026)
6 ZIP codes · 12 water systems · Updated 2026-06-03
Public water data for Greeley, CO reveals a split picture — tap water quality varies meaningfully by service area and the city's grade reflects that variability.
How Greeley Compares
Data: EPA SDWIS Last verified: 2026-06-03
Water Quality Map: Greeley, CO
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Score Distribution
Distribution of water safety grades across Greeley.
Greeley Water: The Quick Version
- Your city's water systems recorded 30 violations in the past 5 years.
- Average lead level: 0.003 mg/L.
- Estimated remediation: $1,700 per household.
- CDC health risk index: 11.23.
Water Systems Serving Greeley
Throughout Greeley, CO, water comes from one of 3 primary utilities out of 12 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 6 ZIP codes in Greeley, Colorado (population ~117,473), covering 12 community water systems serving approximately 253,356 people region-wide.
6 of 6 ZIP codes (100%) have recorded EPA violations. All violations are monitoring/reporting type.
Home Safety Score
Average Home Safety Score for Greeley: C (62/100)
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
Greeley water systems draw from: Surface water.
Lead & Copper
- Average lead level (90th percentile): 0.0030 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): 6 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 |
|---|---|---|---|
| Contaminant 1009 | Other | 14 | 6 |
| Contaminant 1008 | Other | 7 | 6 |
| Stage 1 DBP Rule | Treatment Technique | 7 | 6 |
| Lead and Copper Rule | Treatment Technique | 7 | 6 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 80631 | C | 5 | 0 | City of Greeley |
| 80632 | C | 5 | 0 | City of Greeley |
| 80633 | C | 5 | 0 | City of Greeley |
| 80634 | C | 5 | 0 | City of Greeley |
| 80638 | C | 5 | 0 | City of Greeley |
| 80639 | C | 5 | 0 | City of Greeley |
All ZIP Codes in Greeley
- 80631 [C] — 5 violations
- 80632 [C] — 5 violations
- 80633 [C] — 5 violations
- 80634 [C] — 5 violations
- 80638 [C] — 5 violations
- 80639 [C] — 5 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 Greeley
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 Greeley
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
Greeley: Remediation Cost in Perspective
In Greeley, 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 Greeley are relatively low compared to home values. The $1,133–$2,217 estimated range is a small fraction of median property value. Home values are 10% below the Colorado average.
Protecting Children from Lead in Greeley
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 Greeley 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 Greeley
How does Greeley's flood record connect to local water quality? The NFIP documents 43 claims — enough to signal recurring events — and 33% 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.
Greeley has a moderate flood history with 43 FEMA claims averaging $19,399 per payout. 33% 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>$1,700</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 Greeley
- 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 Contaminant 1009 can reduce the most common contaminant found in Greeley'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 Greeley, CO