Lead · Ohio

Lead in Ohio Drinking Water — 681 ZIPs Tested

EPA data analysis for lead in Ohio drinking water systems

ZipCheckup tracks Lead in Ohio drinking water: 681 ZIP codes with detected levels on record. 212 ZIP codes exceed the EPA limit (15 ppb (action level)). Lead carries a high health-risk designation.

681
ZIPs with Detections
212
ZIPs with Violations
23.4%
Violation Rate
15 ppb (action level)
EPA Limit
High
Health Risk
Reverse Osmosis or NSF 53 Carbon Block
Best Filter Method

Lead Contamination in Ohio

ZipCheckup analyzed drinking water data across 907 ZIP codes in Ohio for lead contamination. 681 ZIP codes have reported lead detections, and 212 have EPA violations on record.

The violation rate for lead in Ohio is 23.4% of all ZIP codes — higher than the national average.

EPA Standard for Lead

The EPA maximum contaminant level (MCL) for lead is 15 ppb (action level), governed by the Lead and Copper Rule (LCRR/LCRI). Water systems that exceed this limit must take corrective action and notify consumers.

Worst ZIP Codes for Lead in Ohio

These ZIP codes reported the highest lead levels in Ohio based on CCR reports and EPA data:

Lowest Lead Levels in Ohio

These ZIP codes had the lowest reported lead detections in Ohio:

Health Effects of Lead

Lead is a potent neurotoxin with no safe level of exposure. In children, lead causes developmental delays, reduced IQ, and behavioral problems. In adults, it causes high blood pressure, kidney damage, and cardiovascular effects. Pregnant women face increased risk of premature birth.

How to Remove Lead From Drinking Water

The most effective treatment for lead removal is Reverse Osmosis or NSF 53 Carbon Block. Look for filters certified under NSF 53 / NSF 58 standards.

Check Your ZIP Code

Use the ZipCheckup water quality search to see lead data for your specific water system in Ohio.

Worst ZIP Codes for Lead in Ohio

Ranked by highest lead detection level.

Rank ZIP Code City Level Detected EPA Limit Status
1 45309 Brookville 470 ppb 15 ppb Exceeds
2 45315 Clayton 470 ppb 15 ppb Exceeds
3 45322 Englewood 470 ppb 15 ppb Exceeds
4 45324 Fairborn 470 ppb 15 ppb Exceeds
5 45402 Dayton 470 ppb 15 ppb Exceeds
6 45403 Dayton 470 ppb 15 ppb Exceeds
7 45404 Dayton 470 ppb 15 ppb Exceeds
8 45405 Dayton 470 ppb 15 ppb Exceeds
9 45406 Dayton 470 ppb 15 ppb Exceeds
10 45409 Dayton 470 ppb 15 ppb Exceeds
11 45410 Dayton 470 ppb 15 ppb Exceeds
12 45414 Dayton 470 ppb 15 ppb Exceeds
13 45415 Dayton 470 ppb 15 ppb Exceeds
14 45416 Dayton 470 ppb 15 ppb Exceeds
15 45417 Dayton 470 ppb 15 ppb Exceeds
16 45419 Dayton 470 ppb 15 ppb Exceeds
17 45420 Dayton 470 ppb 15 ppb Exceeds
18 45424 Dayton 470 ppb 15 ppb Exceeds
19 45426 Dayton 470 ppb 15 ppb Exceeds
20 45428 Dayton 470 ppb 15 ppb Exceeds

Lowest Lead Levels in Ohio

ZIP Code City Level Detected
45846 Fort Recovery 1 ppb
45828 Coldwater 1 ppb
45782 Trimble 1 ppb
45772 Reedsville 1 ppb
45760 Middleport 1 ppb
45743 Long Bottom 1 ppb
45696 Willow Wood 1 ppb
45694 Wheelersburg 1 ppb
45688 Waterloo 1 ppb
45682 South Webster 1 ppb

Cities with Lead Data in Ohio

221 cities in Ohio have lead testing data available.

+ 201 more cities

Ohio Water Quality Overview: See statewide water quality rankings on the Ohio water quality page.
Learn more about Lead: Read the full guide on Lead in drinking water.
Home → Contaminants → Lead → Ohio

How to cite this page

APA ZipCheckup. (2026). Lead in Ohio Drinking Water — 681 ZIPs Tested. https://zipcheckup.com/contaminants/lead/ohio/
BibTeX 
@misc{zipcheckup-contaminants-lead-ohio,
  author = {{ZipCheckup}},
  title  = {{Lead in Ohio Drinking Water — 681 ZIPs Tested}},
  year   = {2026},
  url    = {https://zipcheckup.com/contaminants/lead/ohio/}
}

Page version: August 2026.

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