Water Quality in Columbus Grove, OH: 5 Violations — Grade C
Grade C · Score 68/100 · 1 water system · Updated 2026-05-03
Columbus Grove's water has moderate compliance issues. Residents in affected areas should consider filtration.
Data: EPA Safe Drinking Water Information System (SDWIS) Last verified: 2026-05-03
Columbus Grove, OH — 5 compliance events documented in the federal drinking water record.
Water Quality by ZIP Code in Columbus Grove
Water quality varies across Columbus Grove's 1 ZIP codes. Check your specific ZIP for detailed contaminant data.
| ZIP Code | Grade | Score | Violations | Health | |
|---|---|---|---|---|---|
| 45830 | C | 68 | 5 | 0 | View report → |
Water Quality Overview
Columbus Grove, Ohio receives a water quality grade of C with an overall score of 68 out of 100, based on EPA compliance data from the Safe Drinking Water Information System (SDWIS).
The 1 water system serving Columbus Grove have accumulated 5 EPA violations (all monitoring/reporting type). These violations are tracked across 1 ZIP codes serving approximately 2,137 people.
What Grade C Means
A grade of C indicates moderate compliance issues. Columbus Grove's water systems have some violations that warrant attention. While the water may still be safe for most people, residents in affected ZIP codes should consider additional testing or filtration.
Lead Levels
Lead testing data for Columbus Grove is currently being collected. The EPA requires all community water systems to test for lead under the Lead and Copper Rule.
With 73% of homes built before 1986, Columbus Grove has a higher-than-average risk of lead from older plumbing. Lead solder was banned in 1986, and homes built before this date may have lead in pipes, solder joints, or fixtures.
Radon Risk
Columbus Grove is in EPA Radon Zone 2 (Moderate risk). Testing is recommended, especially for homes with basements or ground-level living spaces.
Water Systems Serving Columbus Grove
Columbus Grove is served by 1 community water system regulated under the Safe Drinking Water Act. These systems collectively serve approximately 2,137 people across 1 ZIP codes.
Each water system is identified by a Public Water System ID (PWSID) and is required to:
- Test for over 90 regulated contaminants on a regular schedule
- Report results to the EPA and state regulators
- Issue an annual Consumer Confidence Report (CCR) to all customers
- Take corrective action when violations occur
The EPA has taken 10 enforcement actions against water systems serving Columbus Grove. Enforcement actions range from informal compliance assistance to formal orders and penalties.
How to Check Your Water in Columbus Grove
Enter your ZIP code on ZipCheckup to see your specific water system data, including contaminant levels, violation history, and safety scores
Request your CCR — your water utility must provide an annual Consumer Confidence Report with detailed test results for all monitored contaminants
Get a home test — certified kits cost $20–$50 and test for lead, bacteria, and common contaminants. Professional lab tests ($150–$400) cover a broader panel
Consider filtration — NSF-certified filters can remove specific contaminants. Reverse osmosis removes the broadest range; activated carbon is effective for chlorine and many organics
Check for advisories — monitor your local utility website and local news for boil water advisories or system alerts
Contaminants Detected in Columbus Grove Water Systems
The following contaminants have been detected or caused violations across Columbus Grove's water systems:
| Contaminant | Category | MCL | Violations | ZIPs Affected | Health-Based |
|---|---|---|---|---|---|
| Surface Water Treatment Rule | Treatment Technique | N/A | 3 | 1 | No |
| Stage 1 DBP Rule | Treatment Technique | N/A | 2 | 1 | No |
MCL = Maximum Contaminant Level (EPA enforceable standard). Health-based violations indicate levels that may pose direct health risks.
EPA Enforcement History
The EPA and state regulators have taken 10 enforcement actions against water systems serving Columbus Grove. Recent actions:
| Date | Action Type |
|---|---|
| 2025-06-30 | State Order Extension |
| 2025-03-26 | State Informal Action |
| 2025-03-20 | State Informal Action |
| 2025-03-20 | State Informal Enforcement |
| 2024-11-26 | State Informal Action |
| 2022-08-23 | State Informal Action |
| 2022-01-20 | State Informal Action |
| 2021-12-31 | State Order Extension |
| 2021-12-15 | State Informal Action |
| 2021-08-09 | State Informal Action |
Enforcement actions range from informal compliance assistance to formal orders and penalties. The most recent action was on 2025-06-30.
Columbus Grove vs. Nearby Ohio Cities
How Columbus Grove's water quality compares to similar cities in Ohio:
| City | Grade | Violations | Systems | Population |
|---|---|---|---|---|
| Columbus Grove | C | 5 | 1 | 2,137 |
| Vaughnsville | D | 0 | 1 | 2,137 |
| Brewster | C | 0 | 1 | 2,113 |
| Creston | B | 1 | 1 | 2,171 |
Common Questions About Columbus Grove Water
These are the most common questions residents search for about water quality in Columbus Grove, Ohio:
Is Columbus Grove water hard or soft? Water hardness varies by source. Columbus Grove's 1 water system uses a single source. Check your ZIP code report for specific hardness data.
Can I drink Columbus Grove tap water? Columbus Grove's water receives a grade of C (68/100). No health-based violations have been recorded, but home testing is always recommended.
What is the best water filter for Columbus Grove? A NSF/ANSI 53-certified filter for lead removal is a good general choice. See our Water Filter Matcher for personalized recommendations.
Columbus Grove vs. Ohio Average
Understanding how Columbus Grove compares to the broader Ohio average helps contextualize your local water quality. Factors like water source, treatment methods, and infrastructure age all contribute to differences between cities in the same state.
To see how individual neighborhoods compare, check the ZIP code reports below — water quality can vary significantly even within Columbus Grove.
ZIP Codes in Columbus Grove
Columbus Grove spans 1 ZIP code. The ZIP with the lowest water quality score is 45830. Each ZIP code has its own water quality profile based on the specific water system serving that area. Check each ZIP code for detailed contaminant data, violation history, and system information.
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
- Enforcement: EPA ECHO database
- Filter recommendations: NSF/ANSI certified products
Updated daily.