2026 Rankings

Worst ZIP Codes for Lead in Water in Ohio — 2026

Last updated: August 11, 2026

681 ZIP codes ranked by Lead (ppb) #1: ZIP 45309 (Brookville, OH) - 470.0 ppb
Lead Violations Lowest Score Safest Flood Risk Energy Cost Radon PFAS Reliability EJ Index Homebuyer Risk CO & Gas Safest Gas Remediation Burden Unresolved Violations (by Utility) Water Equity (by Utility)

Out of 681 ZIP codes with data in Ohio, these are the highest-ranked areas for lead (ppb). See also: National Worst ZIP Codes for Lead in Water | All Ohio Rankings

Statistic Value
ZIP codes ranked 681
Highest value 470.0 ppb
Median value 2.2 ppb
State Ohio

Top 100 Worst ZIP Codes

Rank ZIP Code City State Lead (ppb) Safety Score
1 45309 Brookville OH 470.0 ppb 41/100
2 45315 Clayton OH 470.0 ppb 49/100
3 45322 Englewood OH 470.0 ppb 44/100
4 45324 Fairborn OH 470.0 ppb 62/100
5 45402 Dayton OH 470.0 ppb 50/100
6 45403 Dayton OH 470.0 ppb 50/100
7 45404 Dayton OH 470.0 ppb 50/100
8 45405 Dayton OH 470.0 ppb 50/100
9 45406 Dayton OH 470.0 ppb 50/100
10 45409 Dayton OH 470.0 ppb 50/100
11 45410 Dayton OH 470.0 ppb 50/100
12 45414 Dayton OH 470.0 ppb 50/100
13 45415 Dayton OH 470.0 ppb 50/100
14 45416 Dayton OH 470.0 ppb 50/100
15 45417 Dayton OH 470.0 ppb 46/100
16 45419 Dayton OH 470.0 ppb 50/100
17 45420 Dayton OH 470.0 ppb 50/100
18 45424 Dayton OH 470.0 ppb 49/100
19 45426 Dayton OH 470.0 ppb 45/100
20 45428 Dayton OH 470.0 ppb 50/100
21 45431 Dayton OH 470.0 ppb 49/100
22 45432 Dayton OH 470.0 ppb 49/100
23 45439 Dayton OH 470.0 ppb 50/100
24 45469 Dayton OH 470.0 ppb —
25 44408 Columbiana OH 16.4 ppb —
26 44431 Leetonia OH 16.4 ppb —
27 44460 Salem OH 16.4 ppb —
28 43314 Caledonia OH 12.6 ppb —
29 43315 Cardington OH 12.6 ppb —
30 43320 Edison OH 12.6 ppb —
31 43338 Mount Gilead OH 12.6 ppb —
32 43436 Isle Saint George OH 10.4 ppb —
33 43446 Middle Bass OH 10.4 ppb —
34 43456 Put In Bay OH 10.4 ppb —
35 43804 Baltic OH 10.0 ppb —
36 44681 Sugarcreek OH 10.0 ppb —
37 44076 Orwell OH 8.0 ppb —
38 44085 Rome OH 8.0 ppb 70/100
39 44626 East Sparta OH 8.0 ppb —
40 44632 Hartville OH 8.0 ppb 66/100
41 44641 Louisville OH 8.0 ppb 59/100
42 44646 Massillon OH 8.0 ppb 63/100
43 44652 Middlebranch OH 8.0 ppb 66/100
44 44662 Navarre OH 8.0 ppb 55/100
45 44685 Uniontown OH 8.0 ppb 61/100
46 44702 Canton OH 8.0 ppb 66/100
47 44703 Canton OH 8.0 ppb 66/100
48 44704 Canton OH 8.0 ppb 62/100
49 44705 Canton OH 8.0 ppb 65/100
50 44706 Canton OH 8.0 ppb 66/100
51 44707 Canton OH 8.0 ppb 62/100
52 44708 Canton OH 8.0 ppb 66/100
53 44709 Canton OH 8.0 ppb 66/100
54 44710 Canton OH 8.0 ppb 66/100
55 44714 Canton OH 8.0 ppb 66/100
56 44718 Canton OH 8.0 ppb 66/100
57 44720 North Canton OH 8.0 ppb 65/100
58 44721 Canton OH 8.0 ppb 66/100
59 44730 East Canton OH 8.0 ppb 61/100
60 45320 Eaton OH 7.9 ppb 65/100
61 45308 Bradford OH 7.8 ppb 64/100
62 45318 Covington OH 7.8 ppb —
63 44667 Orrville OH 7.3 ppb —
64 44677 Smithville OH 7.3 ppb —
65 44691 Wooster OH 7.3 ppb —
66 43506 Bryan OH 7.1 ppb —
67 43557 Stryker OH 7.1 ppb —
68 44615 Carrollton OH 6.8 ppb —
69 44644 Malvern OH 6.8 ppb —
70 44688 Waynesburg OH 6.8 ppb —
71 45302 Anna OH 6.7 ppb —
72 45306 Botkins OH 6.7 ppb —
73 45365 Sidney OH 6.7 ppb —
74 45871 New Knoxville OH 6.7 ppb —
75 45729 Fleming OH 6.6 ppb 60/100
76 45744 Lowell OH 6.6 ppb 63/100
77 45750 Marietta OH 6.6 ppb 50/100
78 45786 Waterford OH 6.6 ppb 63/100
79 45788 Whipple OH 6.6 ppb —
80 43950 Saint Clairsville OH 6.3 ppb 33/100
81 43977 Flushing OH 6.3 ppb 50/100
82 43983 Piedmont OH 6.3 ppb —
83 43945 Salineville OH 6.0 ppb —
84 44423 Hanoverton OH 6.0 ppb —
85 44432 Lisbon OH 6.0 ppb —
86 43526 Hicksville OH 5.8 ppb —
87 45011 Hamilton OH 5.8 ppb 33/100
88 45042 Middletown OH 5.8 ppb 36/100
89 45062 Seven Mile OH 5.8 ppb —
90 45064 Somerville OH 5.8 ppb 53/100
91 45067 Trenton OH 5.8 ppb 55/100
92 45813 Antwerp OH 5.8 ppb —
93 45821 Cecil OH 5.8 ppb —
94 45879 Paulding OH 5.8 ppb —
95 44807 Attica OH 5.6 ppb —
96 44818 Bloomville OH 5.6 ppb —
97 44882 Sycamore OH 5.6 ppb —
98 44883 Tiffin OH 5.6 ppb —
99 44203 Barberton OH 5.6 ppb 46/100
100 44216 Clinton OH 5.6 ppb 66/100

Methodology

Lead rankings are based on the 90th percentile lead testing value (PB90) reported by water systems under the Lead and Copper Rule. When CCR data is unavailable, EPA SDWIS lead sampling data is used. The EPA action level for lead is 15 ppb (0.015 mg/L). There is no safe level of lead exposure.

Data sources: EPA Safe Drinking Water Information System (SDWIS), FEMA National Flood Insurance Program, EPA radon zone maps, EIA electricity rates, and Consumer Confidence Reports. Last updated: 2026-08-11.

Frequently Asked Questions

What is a dangerous lead level in water?

The EPA action level is 15 parts per billion (ppb). The American Academy of Pediatrics recommends no more than 1 ppb for school drinking water. There is no safe level of lead exposure for children.

How is lead measured in water?

Water systems collect samples from homes with known lead service lines or lead solder. The 90th percentile value (PB90) means 90% of samples tested below that level. If PB90 exceeds 15 ppb, the system must take corrective action.

Explore More Rankings

How this ranking is calculated, data sources, and limitations: Rankings Methodology →

Related Rankings

Water Safety 2026 EPA violations and water quality scores Infrastructure 2026 Aging pipes and remediation burden Home Safety 2026 Four-input Home Safety Score with other hazards shown separately
Disclaimer: Rankings are based on EPA, FEMA, and federal agency data. They reflect historical patterns and risk indicators, not necessarily current conditions. For the most current information, contact your local water utility or request a Consumer Confidence Report.

Get safety alerts for Ohio

Free updates when EPA data changes for this area. No spam.

Unsubscribe anytime. Privacy Policy.

Share This Page

X Facebook
Check your water filter options Free tool - no phone call required.