CheckPFAS

City overview · Pima County

PFAS in Tucson, AZ

High Risk

EPA UCMR 5 tested 17 public water systems serving the Tucson area across 28 ZIP codes. At least one utility serving Tucson has PFAS above the EPA's enforceable limit.

Water systems tested
17
Systems above EPA limits
2
ZIP codes covered
28
County
Pima County, Arizona

Plain English

01What this means for Tucson

Across the 17 public water systems tested in the Tucson area under EPA UCMR 5, one or more measured a PFAS compound above the federal Maximum Contaminant Level. Contamination varies by utility and neighborhood — find your exact ZIP code below to see the system that serves you. If you're in an affected area, an NSF/ANSI 53 or 58 certified filter (carbon block or reverse osmosis) is the most reliable way to reduce PFAS at the tap.

By utility

02Water systems serving Tucson

  1. FLOWING WELLS IRRIGATION DISTRICT

    7 detected · 2 above limit · PWSID AZ0410051

    High Risk

  2. MARANA MUNICIPAL - HARTMAN VISTAS

    3 detected · 2 above limit · PWSID AZ0410329

    High Risk

  3. MARANA MUNICIPAL - PICTURE ROCKS

    5 detected · 0 above limit · PWSID AZ0410092

    Moderate

  4. UNIVERSITY OF ARIZONA

    4 detected · 0 above limit · PWSID AZ0420423

    Low Level

  5. METROPOLITAN DWID

    3 detected · 0 above limit · PWSID AZ0410076

    Low Level

  6. LAGO DEL ORO WATER COMPANY

    3 detected · 0 above limit · PWSID AZ0411117

    Low Level

  7. TUCSON CITY OF

    2 detected · 0 above limit · PWSID AZ0410112

    Low Level

  8. ORO VALLEY WATER UTILITY

    1 detected · 0 above limit · PWSID AZ0410164

    Low Level

  9. MISSION PALMS APARTMENTS

    1 detected · 0 above limit · PWSID AZ0420570

    Low Level

  10. RAY WATER COMPANY INC

    1 detected · 0 above limit · PWSID AZ0410095

    Low Level

  11. USAF DAVIS MONTHAN AFB

    1 detected · 0 above limit · PWSID AZ0420549

    Low Level

  12. ARIZONA WATER CO - SUPERIOR

    1 detected · 0 above limit · PWSID AZ0411021

    Low Level

  13. VOYAGER WATER COMPANY

    1 detected · 0 above limit · PWSID AZ0410035

    Low Level

  14. ORO VALLEY WATER COUNTRYSIDE

    1 detected · 0 above limit · PWSID AZ0410175

    Low Level

  15. AVRA WATER COOP INC

    1 detected · 0 above limit · PWSID AZ0410006

    Low Level

  16. U OF A SCIENCE TECH PARK

    1 detected · 0 above limit · PWSID AZ0420567

    Low Level

  17. METROPOLITAN DWID - HUB

    1 detected · 0 above limit · PWSID AZ0410060

    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.

85701857048570585706857078571085711857128571385714857158571685718857198573085735857368573785739857418574285743857458574685747857488574985750

Source & Methodology

About this data

Source
EPA UCMR 5
Sampling period
January 2023 – December 2025
Aggregation
17 utilities across 28 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 Tucson 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.