NORTHWESTERN W AND SD - MCCOMB
PWS ID: OH3200411 · BOWLING GREEN, Ohio 43402-0348
NORTHWESTERN W AND SD - MCCOMB serves 1,650 people in BOWLING GREEN, Ohio using Surface Water water sources. It has 193 recorded EPA violations, including 105 health-based violations. No PFAS contamination was detected in UCMR5 testing.
Water Quality Snapshot: NORTHWESTERN W AND SD - MCCOMB
NORTHWESTERN W AND SD - MCCOMB is a local-owned community water system that delivers drinking water to 1,650 residents in BOWLING GREEN, Ohio (Hancock County) through 648 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 193 total violations for this system , of which 105 (54%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 77 monitoring and reporting violations are on file. The most recent violation on record dates to 2024.
The most frequently cited contaminant at this system is TTHM, recorded in 49 violations (MCL, health-based). This system has not yet been sampled under EPA's UCMR5 PFAS monitoring program, so no PFAS detection data is available here.
Across Ohio, EPA tracks 4,181 public water systems serving 11,085,226 people, with 288,388 cumulative violations and 52,412 health-based violations on record. About 90% of systems in the state carry at least one violation, and state-wide the average per system is 69 violations. NORTHWESTERN W AND SD - MCCOMB's 193 violations sit above the Ohio average. Statewide, 204 of 346 UCMR5-tested systems have reported PFAS detections (59%). All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 648
- County
- Hancock
- School/Daycare
- No
- MCL Violations
- 93
- Monitoring Violations
- 77
- Treatment Tech Violations
- 12
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| TTHM | MCL | 49 | 2014 |
| Total Haloacetic Acids (HAA5) | MCL | 35 | 2024 |
| Surface Water Treatment Rule | MR | 25 | 2019 |
| Total Haloacetic Acids (HAA5) | MR | 10 | 2013 |
| TTHM | MR | 10 | 2013 |
| Coliform (TCR) | MCL | 9 | 1996 |
| Interim Enhanced Surface Water Treatment Rule | TT | 8 | 2015 |
| LASSO | MR | 8 | 2000 |
| Atrazine | MR | 8 | 2000 |
| Simazine | MR | 8 | 2000 |
| Consumer Confidence Rule | Other | 6 | 2024 |
| Fluoride | MR | 4 | 1997 |
| Arsenic | MR | 4 | 1997 |
| Surface Water Treatment Rule | TT | 4 | 2002 |
Verify This Water System
The figures above are aggregated from EPA's public databases. To verify the underlying records — or to file a complaint, request a Consumer Confidence Report, or check current monitoring status — go directly to the federal and state regulators that enforce the Safe Drinking Water Act for NORTHWESTERN W AND SD - MCCOMB.
EPA SDWIS — Federal Reports
EPA's Safe Drinking Water Information System (SDWIS) holds the federal compliance record for every regulated public water system. Open the system-level report by PWS ID:
View PWS ID OH3200411 on SDWISSource: EPA SDWIS Federal Reports Search
Ohio Drinking Water Authority
Ohio EPA — Division of Drinking and Ground Waters is the primacy agency that licenses and inspects NORTHWESTERN W AND SD - MCCOMB under EPA-delegated authority.
Open OH regulator portalViolation Timeline
Each row links to the EPA SDWIS public record for verification. Cross-reference the contaminant code on EPA's federal report to see violation dates, return-to-compliance status, and enforcement actions.
| Year (latest) | Contaminant | Category | Count | EPA Record |
|---|---|---|---|---|
| 2024 | Total Haloacetic Acids (HAA5) | MCL | 35 | SDWIS / OH3200411 / 2456 |
| 2024 | Consumer Confidence Rule | Other | 6 | SDWIS / OH3200411 / 7000 |
| 2019 | Surface Water Treatment Rule | MR | 25 | SDWIS / OH3200411 / 0200 |
| 2015 | Interim Enhanced Surface Water Treatment Rule | TT | 8 | SDWIS / OH3200411 / 0300 |
| 2014 | TTHM | MCL | 49 | SDWIS / OH3200411 / 2950 |
| 2013 | Total Haloacetic Acids (HAA5) | MR | 10 | SDWIS / OH3200411 / 2456 |
| 2013 | TTHM | MR | 10 | SDWIS / OH3200411 / 2950 |
| 2002 | Surface Water Treatment Rule | TT | 4 | SDWIS / OH3200411 / 0200 |
| 2000 | LASSO | MR | 8 | SDWIS / OH3200411 / 2051 |
| 2000 | Atrazine | MR | 8 | SDWIS / OH3200411 / 2050 |
| 2000 | Simazine | MR | 8 | SDWIS / OH3200411 / 2037 |
| 1997 | Fluoride | MR | 4 | SDWIS / OH3200411 / 1025 |
| 1997 | Arsenic | MR | 4 | SDWIS / OH3200411 / 1005 |
| 1996 | Coliform (TCR) | MCL | 9 | SDWIS / OH3200411 / 3100 |
How NORTHWESTERN W AND SD - MCCOMB Compares
Cross-reference this system's record against state averages and the federal MCL framework for context.
| Metric | NORTHWESTERN W AND SD - MCCOMB | Ohio avg | Federal benchmark |
|---|---|---|---|
| Total violations | 193 | 69 | SDWA compliance — any non-zero count is a recorded breach |
| Health-based violations | 105 | 12.5 | Indicates a contaminant exceeded a federal MCL |
| PFAS detection | None | 59% | EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt |
| Population served | 1,650 | 2,651 | Sizing context for compliance burden |
Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 4,181 regulated public water systems in Ohio.
Federal MCL reference — Safe Drinking Water Act thresholds ▼
| Contaminant | Federal MCL / Action Level | Note |
|---|---|---|
| Lead | 0 mg/L (Action Level: 0.015 mg/L) | Lead and Copper Rule treatment technique |
| Arsenic | 0.010 mg/L (10 ppb) | Health-based MCL since 2006 |
| Total Coliform | Treatment technique (RTCR) | Indicator organism, monitoring trigger |
| PFOA / PFOS (PFAS) | 4.0 ppt each (final 2024 rule) | Compliance deadline 2029 |
| Nitrate (as N) | 10 mg/L | Acute health risk for infants |
Frequently Asked Questions
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Related Data for Ohio
Read our methodology — how this data is sourced, computed, and verified.