Water Quality Report

Tucson, AZ (85726): 33 Violations Recorded for Mapped Water Systems

EPA data for City of Tucson

PFAS Detected

EPA records for the water systems mapped to 85726 in Tucson, AZ contain 33 recorded violations for inclusive record years 2021 through 2026, all mapped systems combined; 0 are marked health-based.

Data source: U.S. Environmental Protection Agency (EPA) SDWIS

Based on EPA Drinking Water FEMA Flood Data U.S. Census CDC Energy Information Admin. USGS Water Data & 9 more federal sources
Latest air quality, EPA records and weather alerts Current data temporarily unavailable
Current EPA violation data unavailable
Water records and current conditions
Current EPA violation data unavailable
Safety Score N/A
Water Quality Concerns 33 non-health-based violation records in EPA data
Lead Risk Below action level 0.0006 mg/L, 90th percentile, sample period ending 2023-12-31
NFIP Claim History N/A
Data confidence: High (direct measurement) Medium (sampled / sub-geography) Low (modeled / inferred) Methodology →

At a Glance

  • Water EPA records for water systems mapped to this ZIP show 33 violations (non-health) (since 2021).
  • Lead The reported 90th-percentile lead result of 0.0006 mg/L is below the EPA action level for water systems; EPA's health goal for lead is zero.
  • PFAS PFAS detected in UCMR5 sampling; see the PFAS section for each compound, compared with the federal PFAS MCL where one exists.
  • Radon EPA Zone 2 - county-level radon potential, not a home measurement.
Contaminant Summary
Violations on record (not health-based)
33 violations PFAS detected
Report data assembled: Jul 27, 2026 EPA water-system identity: source date or period is not present in ZipCheckup's accepted source record EPA violation history: more than two update cycles old Lead, copper and UCMR measurements: source date or period is not present in ZipCheckup's accepted source record Consumer Confidence Report: source date or period is not present in ZipCheckup's accepted source record
1
Water System
732,906
People Served
0
Health Violations (since 2021)
Groundwater
Water Source
0.000649 mg/L
Reported Lead ResultBelow the national median of system results
Zone 2
County Radon Potential · Moderate

Get updates when new water-quality data is available for your area

Free alerts when new EPA data affects ZIP code 85726. No spam - just safety updates.

Unsubscribe anytime. We only send updates when your safety score changes. See our Privacy Policy.

See incorrect data? Let us know

Score Breakdown

Overall Home Safety Score: Score unavailable

Required evidence is missing. Missing values remain unknown and are not imputed or renormalized.

Canonical components

EPA water compliance
86/100
Observed
PFAS MCL screen
Unknown
Evidence missing
EPA radon zone
50/100
Observed
Annual EPA AirData AQI
75/100
Observed

Required domains

Drinking water
Unknown
Indoor environment
50/100
Outdoor environment
75/100

Coverage: 3 of 4 components and 2 of 3 domains observed.

Model 4.0.0; series home-safety-v4-cross-vertical.

Safety & Health (8) HIGH

Your Water System

ZIP code 85726 in Tucson, Arizona is mapped to the water system City of Tucson (EPA ID: AZ0410112). This system provides water to approximately 732,906 people from groundwater sources.

Other Water Quality Reports in Arizona

Nearby Water Quality Reports

Data Sources

This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for City of Tucson (AZ0410112) on EPA.gov.

2 of the top compounds applied across the surrounding county in USGS pesticide-use estimates appear on EPA drinking-water monitoring lists. See the agricultural pesticide-use section.

📊 EPA Safe Drinking Water · View source →

PFAS Contamination Detected

PFAS ("forever chemicals") have been reported in samples from water systems associated with ZIP code 85726.

Detected compounds: PFBA.

Highest measured level: 0.0081 µg/L

Reverse osmosis (RO) and activated carbon block filters can reduce PFAS at the tap. Certifications list the compounds covered: an NSF/ANSI 53 or 58 claim for PFOA/PFOS does not cover every PFAS, so check that the product lists the compounds detected here.

📊 EPA UCMR5 · View source →
Environmental Hazards (9) CRITICAL
Home & Infrastructure (2) OK
Cost & Community (6) OK

CPSC product recall notices

These national notices are not matched to this ZIP code or water system.

View all recalls →

📊 CPSC · View source →

Frequently Asked Questions

Is the tap water in 85726 safe to drink?

EPA SDWIS records 33 violations since 2021 across the water systems mapped to ZIP 85726 (primary system: City of Tucson), including 0 health-based. The violation table above shows which system each record belongs to. ZipCheckup last updated this page in July 2026. The federal source release date is unavailable, so that month is not presented as source currency.

Where does 85726's water come from?

The recorded water source for City of Tucson, a system mapped to ZIP code 85726, is Groundwater. This system serves approximately 732,906 people.

How can I get my water tested in Tucson?

If City of Tucson supplies your home, contact it for its Consumer Confidence Report; otherwise contact the water utility that serves your address, or hire a certified lab for independent home water testing. The EPA recommends annual testing if you use a private well.

Is lead a concern in 85726 tap water?

The Lead and Copper Rule record selected for 85726 reports a 90th-percentile lead result of 0.000649 mg/L for a water system mapped to this ZIP (record date 2023-12-31). The EPA action level is 0.015 mg/L. This result is below the EPA action level; it does not show the lead level in each home.

What is the radon risk for 85726?

85726 is mapped to a county in EPA Radon Zone 2 (moderate county-level radon potential; EPA recommends testing every home), located in Pima County. EPA radon zones range from Zone 1 (highest county-level potential) to Zone 3 (lowest). Testing your home is recommended regardless of zone.

Are there PFAS (forever chemicals) in 85726's water?

Yes, PFAS have been detected in samples from water systems mapped to 85726. Reverse osmosis and activated carbon filters certified to NSF/ANSI 53 or 58 specifically for PFOA/PFOS reduction can reduce PFAS.

How to cite this page

APA ZipCheckup. (2026). Tucson, AZ (85726): 33 Violations Recorded for Mapped Water Systems. https://zipcheckup.com/report/85726/
BibTeX 
@misc{zipcheckup-report-85726,
  author = {{ZipCheckup}},
  title  = {{Tucson, AZ (85726): 33 Violations Recorded for Mapped Water Systems}},
  year   = {2026},
  url    = {https://zipcheckup.com/report/85726/}
}

Page version: October 2026.

Nearby ZIP Code Reports

Water quality comparison for ZIP codes near 85726

ZIP Code City, State Distance Grade Violations
85701 Tucson, AZ 1.6 mi B 33
85702 Tucson, AZ 1.7 mi N/A 0
85703 Tucson, AZ 1.7 mi N/A 0
85717 Tucson, AZ 1.7 mi N/A 0
85720 Tucson, AZ 1.7 mi N/A 0
85722 Tucson, AZ 1.7 mi N/A 0
85723 Tucson, AZ 1.7 mi N/A 33
85725 Tucson, AZ 1.7 mi N/A 0
85728 Tucson, AZ 1.7 mi N/A 0
85731 Tucson, AZ 1.7 mi N/A 0

Contaminants Detected in 85726

Learn more about the contaminants found in your water supply:

Overall safety breakdown

Home Safety Score →

Find the right water filter

Water Filter Matcher →

Compare filters, tests & services

Compare My Options →

Compare with another ZIP

Compare Tool →
Coverage: 12/17 risk factors Data sources →
Get alerts for 85726