Lead in Hagerstown, MD Drinking Water
Lead data for Hagerstown, Maryland · 94,813 residents · 7 ZIP codes
SDWIS federal records include Lead detections tied to water systems serving Hagerstown, Maryland.
Data: EPA SDWIS, CCR Reports, ECHO Last verified: 2026-05-14
Lead in Hagerstown Tap Water
Lead has been detected in Hagerstown, Maryland drinking water at a maximum level of 944 ppb — 62.93x the EPA action level.
This analysis covers 94,813 residents across 7 ZIP codes in Hagerstown.
Hagerstown's overall water quality grade is C (64/100).
Is Lead in Hagerstown Water Safe?
If you live in an affected ZIP code, consider installing a reverse osmosis or nsf 53 carbon block filter certified under NSF 53 / NSF 58 and testing your water independently.
Lead Levels by ZIP Code
| ZIP Code | Lead Level | EPA Limit | Status |
|---|---|---|---|
| 21740 | 944 ppb | 15 ppb (action level) | Exceeds limit |
| 21741 | 944 ppb | 15 ppb (action level) | Exceeds limit |
| 21742 | 944 ppb | 15 ppb (action level) | Exceeds limit |
| 21746 | 944 ppb | 15 ppb (action level) | Exceeds limit |
| 21747 | 944 ppb | 15 ppb (action level) | Exceeds limit |
| 21748 | 944 ppb | 15 ppb (action level) | Exceeds limit |
| 21749 | 944 ppb | 15 ppb (action level) | Exceeds limit |
Average lead level across Hagerstown: 944 ppb
Health Effects of Lead
- Brain development delays and reduced IQ in children
- Behavioral problems and learning disabilities
- High blood pressure and kidney damage in adults
- Increased risk of premature birth in pregnant women
Health risk severity: High. Governed by the Lead and Copper Rule Revisions (LCRR/LCRI).
How Lead Gets Into Drinking Water
- Corrosion of lead service lines (pipes connecting water main to home)
- Lead solder in copper plumbing joints (pre-1986 homes)
- Brass fixtures and faucets manufactured before 2014
- Stagnant water that sits in lead-containing pipes overnight
What to Do About Lead in Hagerstown Water
- Install an NSF 53 or NSF 58 certified filter at kitchen sink
- Run cold water for 30 seconds before using for drinking or cooking
- Use cold water only for cooking and preparing formula
- Consider whole-home reverse osmosis if lead service line is present
Look for filters certified under NSF 53 / NSF 58 for lead removal.