Arsenic in Van Nuys, CA Drinking Water
Arsenic data for Van Nuys, California · 170,079 residents · 13 ZIP codes
Recent water testing in Van Nuys, California has returned Arsenic readings above detection thresholds.
Data: EPA SDWIS, CCR Reports, ECHO Last verified: 2026-06-04
Arsenic in Van Nuys Tap Water
Van Nuys, California has 13 EPA violations related to arsenic in drinking water.
This analysis covers 170,079 residents across 13 ZIP codes in Van Nuys.
Van Nuys's overall water quality grade is D (54/100).
Is Arsenic in Van Nuys 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 Van Nuys
| Date | Violation Type | Status | ZIP Code |
|---|---|---|---|
| 2025-04-01 | Arsenic (Open) | Open | 91401 |
| 2025-04-01 | Arsenic (Open) | Open | 91404 |
| 2025-04-01 | Arsenic (Open) | Open | 91405 |
| 2025-04-01 | Arsenic (Open) | Open | 91406 |
| 2025-04-01 | Arsenic (Open) | Open | 91407 |
| 2025-04-01 | Arsenic (Open) | Open | 91408 |
| 2025-04-01 | Arsenic (Open) | Open | 91409 |
| 2025-04-01 | Arsenic (Open) | Open | 91410 |
| 2025-04-01 | Arsenic (Open) | Open | 91411 |
| 2025-04-01 | Arsenic (Open) | Open | 91470 |
| 2025-04-01 | Arsenic (Open) | Open | 91482 |
| 2025-04-01 | Arsenic (Open) | Open | 91496 |
| 2025-04-01 | Arsenic (Open) | Open | 91499 |
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 Van Nuys 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.