Lead · Indiana

Lead in Indiana Drinking Water — 481 ZIPs Tested

EPA data analysis for lead in Indiana drinking water systems

ZipCheckup tracks Lead in Indiana drinking water: 481 ZIP codes with detected levels on record. 81 ZIP codes exceed the EPA limit (15 ppb (action level)). Lead carries a high health-risk designation.

481
ZIPs with Detections
81
ZIPs with Violations
15.3%
Violation Rate
15 ppb (action level)
EPA Limit
High
Health Risk
Reverse Osmosis or NSF 53 Carbon Block
Best Filter Method

Lead Contamination in Indiana

ZipCheckup analyzed drinking water data across 531 ZIP codes in Indiana for lead contamination. 481 ZIP codes have reported lead detections, and 81 have EPA violations on record.

The violation rate for lead in Indiana is 15.3% 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 Indiana

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

Lowest Lead Levels in Indiana

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

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 Indiana.

Worst ZIP Codes for Lead in Indiana

Ranked by highest lead detection level.

Rank ZIP Code City Level Detected EPA Limit Status
1 46741 Grabill 59 ppb 15 ppb Exceeds
2 46743 Harlan 59 ppb 15 ppb Exceeds
3 46765 Leo 59 ppb 15 ppb Exceeds
4 46788 Spencerville 59 ppb 15 ppb Exceeds
5 46303 Cedar Lake 15 ppb 15 ppb Within Limit
6 46307 Crown Point 15 ppb 15 ppb Within Limit
7 46725 Columbia City 14 ppb 15 ppb Within Limit
8 46733 Decatur 13 ppb 15 ppb Within Limit
9 46947 Logansport 13 ppb 15 ppb Within Limit
10 47501 Washington 13 ppb 15 ppb Within Limit
11 47558 Montgomery 13 ppb 15 ppb Within Limit
12 46044 Frankton 11 ppb 15 ppb Within Limit
13 46168 Plainfield 11 ppb 15 ppb Within Limit
14 47532 Ferdinand 11 ppb 15 ppb Within Limit
15 47541 Holland 11 ppb 15 ppb Within Limit
16 47542 Huntingburg 11 ppb 15 ppb Within Limit
17 46311 Dyer 10 ppb 15 ppb Within Limit
18 46373 Saint John 10 ppb 15 ppb Within Limit
19 46375 Schererville 10 ppb 15 ppb Within Limit
20 46530 Granger 9 ppb 15 ppb Within Limit

Lowest Lead Levels in Indiana

ZIP Code City Level Detected
47990 Waynetown 1 ppb
47954 Ladoga 1 ppb
47933 Crawfordsville 1 ppb
47920 Battle Ground 1 ppb
47907 West Lafayette 1 ppb
47906 West Lafayette 1 ppb
47904 Lafayette 1 ppb
47901 Lafayette 1 ppb
47882 Sullivan 1 ppb
47879 Shelburn 1 ppb

Cities with Lead Data in Indiana

157 cities in Indiana have lead testing data available.

+ 137 more cities

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

How to cite this page

APA ZipCheckup. (2026). Lead in Indiana Drinking Water — 481 ZIPs Tested. https://zipcheckup.com/contaminants/lead/indiana/
BibTeX 
@misc{zipcheckup-contaminants-lead-indiana,
  author = {{ZipCheckup}},
  title  = {{Lead in Indiana Drinking Water — 481 ZIPs Tested}},
  year   = {2026},
  url    = {https://zipcheckup.com/contaminants/lead/indiana/}
}

Page version: August 2026.

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