A
87

US Water Score: A

Hamersville, OH 45130

Brown County · Population served: 32,090 · Data updated July 2026

Service-area evidence: EPA service-area records associate the listed system with this ZIP. Boundaries may still overlap or change.

Water Systems Serving This Area

🌊
BROWN COUNTY RURAL WATER
Groundwater · Pop. 32,090
PWSID: OH0802012
🌊
TATE-MONROE WATER ASSOCIATION PWS
Groundwater · Pop. 24,092
PWSID: OH1301312
🌊
HAMERSVILLE VILLAGE PWS
Groundwater · Pop. 925
PWSID: OH0800603

Contaminants Detected

ContaminantDetected LevelEPA MCLHealth GuidelineStatus
Lead
0.7
15 ppb 1 ppb Passed
Copper
180000.0
1300 ppb 300 ppb

PFAS / Forever Chemicals

1 detected 1 above comparison value

UCMR5 occurrence results are screening information, not a finding of regulatory compliance or noncompliance. PFAS rules and compliance dates are evolving.

CompoundLevelEPA MCLHealth GuidelineStatus
PFOA7.4 ppt4 ppt4 pptAbove comparison value

Violation History (Last 5 Years)

2Total (5yr)
0Health-Based
0Major

Water Quality Summary

Understanding Your Water in Hamersville

Tap water quality in Hamersville, Ohio (45130) receives an overall grade of A (Lower record-based concern) with a score of 87 out of 100, based on analysis of EPA compliance data, contaminant testing, and violation history. This is 5 points above the Ohio state average of 82. Compared to the national average (75), this area performs significantly better. The area is served by 3 water systems providing water to approximately 32,090 people, using groundwater sources. Notably, 1 PFAS compound exceeds the EPA final MCL value used for comparison — a significant concern given the persistent nature of these chemicals.

Your Score 87/100 A
vs State 5 pts above Ohio avg (82)
vs National 12 pts above national avg (75)

What a Grade A Means

A score of 87/100 means public water-system records for Hamersville, OH show relatively few concerns in the US Water Score model. This is an internal score, not an EPA safety rating, and it does not guarantee conditions at any specific tap.

Groundwater: drawn from underground aquifers via wells

Health Information

What These Contaminants Mean for You

⚠️

Lead in Your Water

Lead is a toxic metal that can leach from aging pipes and plumbing fixtures.

Health Effects

Even low levels of lead exposure can cause developmental delays in children, kidney damage, and cardiovascular effects in adults. The EPA action level is 15 ppb, but health experts recommend no safe level of lead in drinking water.

Common Sources

Lead enters water primarily through corrosion of lead service lines, lead solder, and brass fixtures — especially in homes built before 1986.

What You Can Do

If lead is detected above 1 ppb, consider using a certified lead-removal filter (NSF/ANSI 53) for drinking and cooking water. Run cold water for 30 seconds before use if water has been sitting in pipes.

🔶

Copper in Your Water

Copper can leach into water from copper plumbing, especially in newer homes or when water is acidic.

Health Effects

Short-term exposure above 1,300 ppb can cause gastrointestinal distress. Long-term exposure may cause liver or kidney damage. People with Wilson's disease are especially vulnerable.

Common Sources

Copper pipes, fittings, and faucets are the most common source. Corrosive (low-pH) water accelerates copper leaching.

What You Can Do

If copper levels are elevated, flush pipes by running water for 15–30 seconds before use. Reverse osmosis and distillation systems effectively remove copper.

Common Questions

Frequently Asked Questions

Based on public water-system records, Hamersville, Ohio receives an internal US Water Score grade of A (Lower record-based concern) with a score of 87/100. This indicates relatively few system-level concerns in our model, but it is not an EPA safety rating and does not guarantee tap conditions inside individual homes.

ZIP code 45130 is served by 3 water systems using groundwater sources, providing water to approximately 32,090 people. Groundwater is naturally filtered through rock and soil, often requiring less treatment. However, it can be vulnerable to contamination from underground sources like naturally occurring arsenic, nitrates from agriculture, or PFAS from industrial sites.

Lead levels in Hamersville, Ohio are 0.7 ppb, which is at or below the health guideline of 1 ppb. This is a positive result, though periodic testing is still recommended.

Yes — 1 PFAS compounds were detected in records associated with water serving Hamersville, Ohio, and 1 result exceeded the numerical EPA MCL value used for comparison. UCMR5 occurrence results alone are not a regulatory compliance determination. PFAS rules and compliance timelines are evolving; verify current information with the utility and EPA.

Water systems serving Hamersville, Ohio have received 2 violations in the last 5 years. Violations can range from paperwork issues (monitoring & reporting) to serious health-based violations where contaminant levels exceeded safe limits. Review the violation details above for specifics.

Based on detected contaminants (PFAS, copper), residents in Hamersville, Ohio should consider: Reverse osmosis (RO) system — most effective for PFAS, lead, and other contaminants. Always look for filters with NSF/ANSI certification for the specific contaminants you want to remove.

Explore Nearby

Water Quality in Nearby ZIP Codes