Arsenic in Bay City, TX Drinking Water
Arsenic data for Bay City, Texas · 18,527 residents · 2 ZIP codes
Not every city shows Arsenic in its water data; in Bay City, Texas, federal sampling has confirmed its presence at detectable levels in at least one recent reporting cycle.
Data: EPA SDWIS, CCR Reports, ECHO Last verified: 2026-05-14
Arsenic in Bay City Tap Water
Arsenic has been detected in Bay City, Texas drinking water at a maximum level of 11 ppb — 1.1x the EPA MCL.
This analysis covers 18,527 residents across 2 ZIP codes in Bay City.
Bay City's overall water quality grade is C (69/100).
Is Arsenic in Bay City 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.
Arsenic Levels by ZIP Code
| ZIP Code | Arsenic Level | EPA Limit | Status |
|---|---|---|---|
| 77404 | 11 ppb | 10 ppb | Exceeds limit |
| 77414 | 11 ppb | 10 ppb | Exceeds limit |
Average arsenic level across Bay City: 11 ppb
EPA Violations for Arsenic in Bay City
| Date | Violation Type | Status | ZIP Code |
|---|---|---|---|
| 2024-04-01 | Arsenic (Resolved) | Resolved | 77404 |
| 2024-04-01 | Arsenic (Resolved) | Resolved | 77414 |
| 2024-01-01 | Arsenic (Resolved) | Resolved | 77404 |
| 2024-01-01 | Arsenic (Resolved) | Resolved | 77414 |
| 2022-07-01 | Arsenic (Known) | Known | 77404 |
| 2022-07-01 | Arsenic (Known) | Known | 77414 |
| 2022-04-01 | Arsenic (Resolved) | Resolved | 77404 |
| 2022-04-01 | Arsenic (Resolved) | Resolved | 77414 |
| 2022-01-01 | Arsenic (Known) | Known | 77404 |
| 2022-01-01 | Arsenic (Known) | Known | 77414 |
| 2021-10-01 | Arsenic (Known) | Known | 77404 |
| 2021-10-01 | Arsenic (Known) | Known | 77414 |
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 Bay City 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.