Arsenic in Flint, MI Drinking Water
Arsenic data for Flint, Michigan · 164,760 residents · 17 ZIP codes
Water monitoring in Flint, Michigan has logged Arsenic at detectable levels in recent sampling cycles.
Data: EPA SDWIS, CCR Reports, ECHO Last verified: 2026-05-14
Arsenic in Flint Tap Water
Flint, Michigan has 136 EPA violations related to arsenic in drinking water.
This analysis covers 164,760 residents across 17 ZIP codes in Flint.
Flint's overall water quality grade is B (80/100).
Is Arsenic in Flint Water Safe?
If you live in an affected ZIP code, consider installing a reverse osmosis filter certified under NSF 53 / NSF 58 and testing your water independently.
EPA Violations for Arsenic in Flint
| Date | Violation Type | Status | ZIP Code |
|---|---|---|---|
| 2025-01-01 | Arsenic (Known) | Known | 48501 |
| 2025-01-01 | Arsenic (Known) | Known | 48502 |
| 2025-01-01 | Arsenic (Known) | Known | 48503 |
| 2025-01-01 | Arsenic (Known) | Known | 48504 |
| 2025-01-01 | Arsenic (Known) | Known | 48505 |
| 2025-01-01 | Arsenic (Known) | Known | 48506 |
| 2025-01-01 | Arsenic (Known) | Known | 48507 |
| 2025-01-01 | Arsenic (Known) | Known | 48531 |
| 2025-01-01 | Arsenic (Known) | Known | 48532 |
| 2025-01-01 | Arsenic (Known) | Known | 48550 |
| 2025-01-01 | Arsenic (Known) | Known | 48551 |
| 2025-01-01 | Arsenic (Known) | Known | 48552 |
| 2025-01-01 | Arsenic (Known) | Known | 48553 |
| 2025-01-01 | Arsenic (Known) | Known | 48554 |
| 2025-01-01 | Arsenic (Known) | Known | 48555 |
| 2025-01-01 | Arsenic (Known) | Known | 48556 |
| 2025-01-01 | Arsenic (Known) | Known | 48557 |
| 2024-07-01 | Arsenic (Resolved) | Resolved | 48501 |
| 2024-07-01 | Arsenic (Resolved) | Resolved | 48502 |
| 2024-07-01 | Arsenic (Resolved) | Resolved | 48503 |
| ... | 116 more violations |
Health Effects of Arsenic
- Increased risk of skin, bladder, lung, and kidney cancer
- Cardiovascular disease and type 2 diabetes
- Skin changes (darkening, thickening, lesions)
- Developmental effects in children exposed in utero
Health risk severity: High. Governed by the Arsenic Rule (2006).
How Arsenic Gets Into Drinking Water
- Natural deposits in rock and soil (especially in western U.S.)
- Runoff from orchards and glass/electronics production
- Historical use of arsenic-based pesticides
- Well water in areas with arsenic-rich geology
What to Do About Arsenic in Flint Water
- Install a reverse osmosis (RO) system certified under NSF 58
- Adsorptive media filters (iron-based) can also reduce arsenic
- Have well water tested if on a private supply
- Boiling water does NOT remove arsenic — it concentrates it
Look for filters certified under NSF 53 / NSF 58 for arsenic removal.