Arsenic in Rosamond, CA Drinking Water
Arsenic data for Rosamond, California · 18,134 residents · 1 ZIP code
Because Arsenic is associated with health effects at sustained elevated exposures, residents in Rosamond, California may find it useful that local water systems have returned detectable concentrations — facts that bear on long-term household water decisions.
Data: EPA SDWIS, CCR Reports, ECHO Last verified: 2026-05-14
Arsenic in Rosamond Tap Water
Arsenic has been detected in Rosamond, California drinking water at a maximum level of 8.7 ppb — below the EPA MCL of 10 ppb.
This analysis covers 18,134 residents across 1 ZIP code in Rosamond.
Rosamond's overall water quality grade is F (28/100).
Is Arsenic in Rosamond 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 |
|---|---|---|---|
| 93560 | 8.7 ppb | 10 ppb | OK |
Average arsenic level across Rosamond: 8.7 ppb
EPA Violations for Arsenic in Rosamond
| Date | Violation Type | Status | ZIP Code |
|---|---|---|---|
| 2025-04-01 | Arsenic (Known) | Known | 93560 |
| 2025-04-01 | Arsenic (Known) | Known | 93560 |
| 2025-04-01 | Arsenic (Known) | Known | 93560 |
| 2025-01-01 | Arsenic (Known) | Known | 93560 |
| 2025-01-01 | Arsenic (Known) | Known | 93560 |
| 2025-01-01 | Arsenic (Known) | Known | 93560 |
| 2024-10-01 | Arsenic (Known) | Known | 93560 |
| 2024-10-01 | Arsenic (Known) | Known | 93560 |
| 2024-07-01 | Arsenic (Known) | Known | 93560 |
| 2024-07-01 | Arsenic (Known) | Known | 93560 |
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 Rosamond 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.