Pasco, WA: 6 Health Violations — 80/100 (2026)
2 ZIP codes · 8 water systems · Updated 2026-06-03
EPA compliance records for Pasco tell a largely clear story: violation rates are low, health-based exceedances are uncommon, and the city's grade puts it well above average within WA.
How Pasco Compares
Data: EPA SDWIS Last verified: 2026-06-03
What You Should Know About Pasco Water
- Your city's water systems recorded 26 violations in the past 5 years.
- Average lead level: 0.0019 mg/L.
- Estimated remediation: $1,900 per household.
- CDC health risk index: 11.26.
Who Supplies Your Water in Pasco
Water service in Pasco, WA is split across 3 utilities out of 8 tracked federally, each operating its own infrastructure and compliance record.
Overview
We track water quality and home safety data for 2 ZIP codes in Pasco, Washington, covering 8 community water systems serving approximately 86,467 people.
2 of 2 ZIP codes (100%) have recorded EPA violations. 6 health-based violations documented.
Home Safety Score
Average Home Safety Score for Pasco: B (80/100)
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
Pasco water systems draw from: Groundwater, Surface water.
Lead & Copper
- Average lead level (90th percentile): 0.0019 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): 2 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 |
|---|---|---|---|
| Nickel | Inorganic | 15 | 2 |
| Total Organic Carbon | Disinfection Byproducts | 12 | 2 |
| Total Trihalomethanes (TTHM) | Disinfection Byproducts | 6 | 2 |
| Lead | Inorganic | 3 | 2 |
| Consumer Confidence Report Rule | Reporting | 3 | 2 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 99301 | B | 13 | 3 | Pasco Water Department |
| 99302 | B | 13 | 3 | Pasco Water Department |
All ZIP Codes in Pasco
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 Pasco
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 Pasco Water
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
Cost Context: What Remediation Means for Pasco Homeowners
In Pasco, documented water and safety issues can be addressed without making a meaningful dent in home equity — the financial proportionality here is favorable, and the commitment fits within standard property planning frameworks.
Remediation costs in Pasco are relatively low compared to home values. The $900–$3,550 estimated range is a small fraction of median property value. Home values are 24% below the Washington average.
Lead Exposure Risk for Children in Pasco
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 Pasco 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 Pasco
Taken together, Pasco's 1 NFIP flood insurance claim and 50% FEMA flood zone coverage place it in the moderate range of exposure. That middle position has specific implications for water quality. The contamination pathways that flooding can open — surface water overwhelming treatment facility intake, floodwaters infiltrating private wells, distribution pressure changes creating backflow — are not constant risks in a moderate-exposure community. But they do become active during significant flood events, and the claim record here indicates enough of those events to make flood timing an occasional factor in local water quality conversations.
Pasco has a moderate flood history with 1 FEMA claims. 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>$1,900</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 Pasco, WA