Lead in Missouri Drinking Water — 763 ZIPs Tested
EPA data analysis for lead in Missouri drinking water systems
ZipCheckup tracks Lead in Missouri drinking water: 763 ZIP codes with detected levels on record. 209 ZIP codes exceed the EPA limit (15 ppb (action level)). Lead carries a high health-risk designation.
Lead Contamination in Missouri
ZipCheckup analyzed drinking water data across 850 ZIP codes in Missouri for lead contamination. 763 ZIP codes have reported lead detections, and 209 have EPA violations on record.
The violation rate for lead in Missouri is 24.6% 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 Missouri
These ZIP codes reported the highest lead levels in Missouri based on CCR reports and EPA data:
Lowest Lead Levels in Missouri
These ZIP codes had the lowest reported lead detections in Missouri:
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 Missouri.
Worst ZIP Codes for Lead in Missouri
Ranked by highest lead detection level.
| Rank | ZIP Code | City | Level Detected | EPA Limit | Status |
|---|---|---|---|---|---|
| 1 | 65672 | Hollister | 104 ppb | 15 ppb | Exceeds |
| 2 | 65739 | Ridgedale | 104 ppb | 15 ppb | Exceeds |
| 3 | 65340 | Marshall | 15 ppb | 15 ppb | Within Limit |
| 4 | 65351 | Sweet Springs | 15 ppb | 15 ppb | Within Limit |
| 5 | 63628 | Bonne Terre | 13 ppb | 15 ppb | Within Limit |
| 6 | 65624 | Cape Fair | 13 ppb | 15 ppb | Within Limit |
| 7 | 65681 | Lampe | 13 ppb | 15 ppb | Within Limit |
| 8 | 65747 | Shell Knob | 13 ppb | 15 ppb | Within Limit |
| 9 | 63825 | Bloomfield | 12 ppb | 15 ppb | Within Limit |
| 10 | 63841 | Dexter | 12 ppb | 15 ppb | Within Limit |
| 11 | 65686 | Kimberling City | 12 ppb | 15 ppb | Within Limit |
| 12 | 65737 | Reeds Spring | 12 ppb | 15 ppb | Within Limit |
| 13 | 63012 | Barnhart | 11 ppb | 15 ppb | Within Limit |
| 14 | 63050 | Hillsboro | 11 ppb | 15 ppb | Within Limit |
| 15 | 63052 | Imperial | 11 ppb | 15 ppb | Within Limit |
| 16 | 63080 | Sullivan | 11 ppb | 15 ppb | Within Limit |
| 17 | 63830 | Caruthersville | 11 ppb | 15 ppb | Within Limit |
| 18 | 63039 | Gray Summit | 10 ppb | 15 ppb | Within Limit |
| 19 | 63055 | Labadie | 10 ppb | 15 ppb | Within Limit |
| 20 | 63069 | Pacific | 10 ppb | 15 ppb | Within Limit |
Lowest Lead Levels in Missouri
Cities with Lead Data in Missouri
148 cities in Missouri have lead testing data available.
+ 128 more cities