CheckPFAS

City overview · Riverside County

PFAS in Corona, CA

Moderate

EPA UCMR 5 tested 4 public water systems serving the Corona area across 7 ZIP codes. PFAS were detected in Corona's water, but below EPA limits.

Water systems tested
4
Systems above EPA limits
0
ZIP codes covered
7
County
Riverside County, California

Plain English

01What this means for Corona

Testing under EPA UCMR 5 found PFAS in the Corona area at concentrations below the federal Maximum Contaminant Level. "Below the limit" is not the same as "none" — levels vary by utility. Check your specific ZIP code below for the system serving your home. A certified point-of-use filter is a low-cost way to reduce exposure further if you'd like.

By utility

02Water systems serving Corona

  1. CORONA, CITY OF

    5 detected · 0 above limit · PWSID CA3310037

    Moderate

  2. RIVERSIDE, CITY OF

    4 detected · 0 above limit · PWSID CA3310031

    Low Level

  3. WESTERN MWD

    4 detected · 0 above limit · PWSID CA3310049

    Low Level

  4. ELSINORE VALLEY MWD

    2 detected · 0 above limit · PWSID CA3310012

    Low Level

By ZIP code

03Find your exact result

Contamination can differ block to block. Select your ZIP code for the precise reading at the utility that serves your address.

92877928789287992880928819288292883

Source & Methodology

About this data

Source
EPA UCMR 5
Sampling period
January 2023 – December 2025
Aggregation
4 utilities across 7 ZIP codes
Detection threshold (MRL)
~1.5–2 ppt

City-level figures aggregate the individual public water systems tested under EPA UCMR 5 whose service area falls within the Corona area. Values reflect water quality at the treatment plant; your home's plumbing can affect what reaches your tap. Select your ZIP above for the utility-specific reading.