Columbus Grove, OH: 5 Violations — 68/100 (2026)
1 ZIP code · 2 water systems · Updated 2026-06-03
Across Columbus Grove, EPA compliance data for OH sits at a moderate level — not alarming, but not uniformly clean across all service areas either.
How Columbus Grove Compares
Data: EPA SDWIS Last verified: 2026-06-03
Columbus Grove Water: The Quick Version
- Your city's water systems recorded 5 violations in the past 5 years.
- Homes built before 1986: 73% — older plumbing may contain lead solder.
- Estimated remediation: $1,600 per household.
- CDC health risk index: 14.02 — above typical levels.
Water Systems Serving Columbus Grove
Columbus Grove, OH draws its residential water from 2 separate providers among the 2 federally tracked systems. Each operates independently, with its own infrastructure, rate structure, and compliance record.
Overview
We track water quality and home safety data for 1 ZIP code in Columbus Grove, Ohio, covering 2 community water systems serving approximately 5,403 people.
1 of 1 ZIP code (100%) have recorded EPA violations. All violations are monitoring/reporting type.
Home Safety Score
Average Home Safety Score for Columbus Grove: C (68/100)
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
Columbus Grove water systems draw from: Groundwater.
Lead & Copper
- Lead data: not yet available for Columbus Grove
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 2 (Moderate Risk)
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
Top Contaminants
| Contaminant | Category | Violations | ZIPs Affected |
|---|---|---|---|
| Surface Water Treatment Rule | Treatment Technique | 6 | 1 |
| Stage 1 DBP Rule | Treatment Technique | 4 | 1 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 45830 | C | 5 | 0 | Columbus Grove Village |
All ZIP Codes in Columbus Grove
- 45830 [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 Columbus Grove
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 Columbus Grove
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
How Old Is Columbus Grove's Housing Stock?
With 73% of homes built before 1986, lead solder in plumbing is a potential concern. The EPA banned lead solder in 1986, but many older homes retain original plumbing.
Source: U.S. Census Bureau American Community Survey (ACS).
Housing Age Profile
Viewed through the lens of construction era, Columbus Grove is predominantly an older city — a median build year of 1963 puts most of the residential inventory in the range where pre-1986 plumbing materials were the standard.
Over half of homes in Columbus Grove were built before 1986, when lead solder was banned. Older plumbing may leach lead into drinking water, especially with corrosive water chemistry.
Source: U.S. Census Bureau ACS B25034.
Columbus Grove: Remediation Cost in Perspective
Property equity in Columbus Grove runs well ahead of estimated remediation costs — a cost-to-value ratio that sits in the low tier, meaning documented water and safety issues here are the kind homeowners can plan to address without treating the expense as a significant budget event relative to what their homes are worth.
Remediation costs in Columbus Grove are relatively low compared to home values. The $800–$2,600 estimated range is a small fraction of median property value. Home values are 8% below the Ohio average.
Protecting Children from Lead in Columbus Grove
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.
Pulling a tap sample fills the gap that utility data cannot close, particularly here where 73% of housing dates from the pre-rule era and citywide monitoring sits at or above the regulatory mark in Columbus Grove.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Climate-Related Water Risk for Columbus Grove
FEMA data shows 100% of Columbus Grove's ZIP codes mapped into designated flood zones, paired with an NFIP record of 10 claims. That footprint places local flood exposure in the range where it warrants attention without rising to high-severity planning territory.
Columbus Grove has a moderate flood history with 10 FEMA claims averaging $9,013 per payout. 100% 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>$1,600</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 Columbus Grove
- 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 Surface Water Treatment Rule can reduce the most common contaminant found in Columbus Grove's water.
- Check your home's plumbing. With 73% of homes built before 1986, lead solder is a real possibility.
Deep Dive Reports
Detailed analysis for Columbus Grove, OH