Exceeds EPA Limit Arsenic EXCEEDS EPA LIMIT

Arsenic in Encino, CA Drinking Water

Arsenic data for Encino, California · 45,670 residents · 4 ZIP codes

Arsenic exposure in drinking water is tracked by EPA across the country; households in Encino, California are among those with confirmed detections in the public water record.

10 ppb
EPA MCL
4
EPA Violations
High
Health Risk
Reverse Osmosis
Best Filter Method

Data: EPA SDWIS, CCR Reports, ECHO Last verified: 2026-04-05

Arsenic in Encino Tap Water

Encino, California has 4 EPA violations related to arsenic in drinking water.

This analysis covers 45,670 residents across 4 ZIP codes in Encino.

Encino's overall water quality grade is F (19/100).

Is Arsenic in Encino Water Safe?

Arsenic levels in parts of Encino exceed the EPA MCL of 10 ppb. The EPA requires water systems to take corrective action when this limit is exceeded.

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 Encino

Date Violation Type Status ZIP Code
2025-04-01 Arsenic (Known) Known 91316
2025-04-01 Arsenic (Known) Known 91416
2025-04-01 Arsenic (Known) Known 91426
2025-04-01 Arsenic (Known) Known 91436

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 Encino Water

  1. Install a reverse osmosis (RO) system certified under NSF 58
  2. Adsorptive media filters (iron-based) can also reduce arsenic
  3. Have well water tested if on a private supply
  4. Boiling water does NOT remove arsenic — it concentrates it

Look for filters certified under NSF 53 / NSF 58 for arsenic removal.

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