Warren, OH: 21 Violations — 76/100 (2026)
7 ZIP codes · 12 water systems · Updated 2026-06-03
How does Warren tap water hold up under EPA scrutiny? Above average for OH — documented violations are uncommon and the safety grade reflects a clean overall record.
How Warren Compares
Data: EPA SDWIS Last verified: 2026-06-03
Water Quality Map: Warren, OH
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Score Distribution
Safety grade breakdown for Warren's 7 ZIP codes.
Key Facts for Warren Residents
- Your city's water systems recorded 21 violations in the past 5 years.
- Average lead level: 0.0037 mg/L.
- Estimated remediation: $1,843 per household.
- CDC health risk index: 15.64 — above typical levels.
Warren's Water Providers
3 water utilities share the residential service territory in Warren, OH — out of 12 total systems in federal records.
Overview
We track water quality and home safety data for 7 ZIP codes in Warren, Ohio (population ~72,717), covering 12 community water systems serving approximately 110,146 people region-wide.
7 of 7 ZIP codes (100%) have recorded EPA violations. All violations are monitoring/reporting type.
Home Safety Score
Average Home Safety Score for Warren: 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
Warren water systems draw from: Groundwater, Surface water.
Lead & Copper
- Average lead level (90th percentile): 0.0037 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): 7 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 |
|---|---|---|---|
| Lead | Inorganic | 8 | 7 |
| Total Trihalomethanes (TTHM) | Disinfection Byproducts | 8 | 7 |
| Stage 1 DBP Rule | Treatment Technique | 8 | 7 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 44481 | B | 3 | 0 | Warren City Public Water System |
| 44482 | B | 3 | 0 | Warren City Public Water System |
| 44483 | B | 3 | 0 | Warren City Public Water System |
| 44484 | B | 3 | 0 | Warren City Public Water System |
| 44485 | B | 3 | 0 | Warren City Public Water System |
| 44486 | B | 3 | 0 | Warren City Public Water System |
| 44488 | B | 3 | 0 | Warren City Public Water System |
All ZIP Codes in Warren
- 44481 [B] — 3 violations
- 44482 [B] — 3 violations
- 44483 [B] — 3 violations
- 44484 [B] — 3 violations
- 44485 [B] — 3 violations
- 44486 [B] — 3 violations
- 44488 [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.
Warren Community Health Snapshot
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
What's in Warren's Water?
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
How Remediation Costs Compare in Warren
In Warren, the equity share of documented remediation is meaningful enough to move the household financial perspective from routine maintenance into deliberate budgeting territory — the cost-to-value ratio is moderate, and most homeowners benefit from mapping the full scope against available budgets before committing.
Remediation costs are moderate relative to home values in Warren. The estimated $971–$2,971 range is manageable for most homeowners but still worth budgeting for. Home values are 13% below the Ohio average.
Warren: Lead Risk & Vulnerable Populations
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 Warren 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.
Warren: Flood History & Water Damage Risk
A moderate NFIP record for Warren — 94 insurance claims paired with 71% of ZIP codes in FEMA flood zones — points to a flood history where water-quality pathways have likely been periodically relevant.
Warren has a moderate flood history with 94 FEMA claims averaging $18,597 per payout. 71% 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>$1,843</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 Warren, OH