C
69

US Water Score: C

Middletown, OH 45044

Butler County · Population served: 116,572 · 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

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BUTLER CO. WATER DISTRICT 2 PWS
Surface water · Pop. 116,572
PWSID: OH0900303
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NORTHVIEW UTILITY CORPORATION PWS
Groundwater · Pop. 87
PWSID: OH7500912

Contaminants Detected

ContaminantDetected LevelEPA MCLHealth GuidelineStatus
Lead
3.9
15 ppb 1 ppb Warning
Copper
12100.0
1300 ppb 300 ppb

PFAS / Forever Chemicals

2 detected Below comparison values

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

CompoundLevelEPA MCLHealth GuidelineStatus
PFHxS4.7 ppt10 ppt10 pptBelow comparison value
PFBS3.5 ppt2000 ppt100 pptBelow comparison value

Violation History (Last 5 Years)

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

Water Quality Summary

Understanding Your Water in Middletown

Tap water quality in Middletown, Ohio (45044) receives an overall grade of C (Mixed record-based signals) with a score of 69 out of 100, based on analysis of EPA compliance data, contaminant testing, and violation history. This is 13 points below the Ohio state average of 82. The area is served by 2 water systems providing water to approximately 116,572 people, using surface water and groundwater sources. Testing has found elevated levels of Lead that warrant attention. PFAS testing detected 2 compounds, all below the EPA final MCL values used for comparison.

Your Score 69/100 C
vs State 13 pts below Ohio avg (82)
vs National 6 pts below national avg (75)

What a Grade C Means

A score of 69/100 indicates fair performance in the US Water Score model for Middletown, OH. The records show noteworthy concerns, such as elevated contaminant levels, violation history, or both. Review the detailed contaminant data and official utility reports before making decisions.

Surface water: sourced from rivers, lakes, or reservoirs
Groundwater: drawn from underground aquifers via wells

Health Information

What These Contaminants Mean for You

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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.

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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

Middletown, Ohio receives an internal US Water Score grade of C (Fair) with a score of 69/100. Our model found some system-level concerns, such as violation history or elevated contaminant levels. Review your utility's Consumer Confidence Report and consult a qualified professional for household-specific health questions.

ZIP code 45044 is served by 2 water systems using surface water, groundwater sources, providing water to approximately 116,572 people. Multiple source types mean your water may come from a blend of surface and underground sources.

Lead was reported at 3.9 ppb in public-system records for Middletown, Ohio. This is below the currently applicable EPA action level of 15 ppb, but may be above more protective health guidance; EPA's future LCRI action level is 10 ppb. Household plumbing can materially change tap-level exposure, so consider certified filtration and individual tap testing, especially where children are present.

2 PFAS compounds were detected in water serving Middletown, Ohio, with reported values below the EPA final MCL values used by this site. This comparison is informational: federal compliance timelines and the status of some PFAS standards are still evolving. Activated carbon or reverse osmosis filters can reduce some PFAS when appropriately certified and maintained.

Water systems serving Middletown, Ohio have received 5 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 (lead, PFAS, copper), residents in Middletown, 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.

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