Is Phoenix, AZ tap water safe?
The short answer
6 of the 11 utilities serving Phoenix have a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and CDC’s records: City of Phoenix, Epcor - Anthem, Orangewood Mobile Home Park and 3 more.
City of Phoenix, which serves the most people here, has 3 results above the health goal and 1 result above EPA’s health benchmark. The worst: Lithium at 160 ppb, above EPA’s health benchmark. Health goals are stricter than legal limits and are not enforced.
The water from City of Phoenix is hard to very hard, 172 to 302 mg/L (10.1 to 17.7 grains per gallon). How it compares.
A town can be served by more than one utility, and some homes are on private wells. The name on your water bill tells you which is yours, and your ZIP code narrows it down. They are listed by how many people each serves in Phoenix’s ZIP codes, from EPA’s estimates.
- Open report
City of Phoenix
Arizona · serves 1.7 million people · about 1.5 million in Phoenix
3 results above the health goal and 1 result above EPA’s health benchmark. The worst: Lithium at 160 ppb, above EPA’s health benchmark. Hardness: hard to very hard, 172 to 302 mg/L (10.1 to 17.7 grains per gallon).
1 health-based violation since 2016
- Open report
City of Glendale
Arizona · serves 234,766 people · about 28,200 in Phoenix
3 results above the health goal and 1 result above EPA’s health benchmark. The worst: Lithium at 117 ppb, above EPA’s health benchmark.
No health-based violations since 2016
- Open report
Epcor - Anthem
Arizona · serves 23,826 people · about 11,400 in Phoenix
2 results above the health goal and 1 result above EPA’s health benchmark. The worst: Lithium at 72.3 ppb, above EPA’s health benchmark.
1 health-based violation since 2016
- Open report
Orangewood Mobile Home Park
Arizona · serves 500 people · nearly all in Phoenix
1 result above the legal limit. The worst: Arsenic at 13 ppb, above the legal limit.
3 health-based violations since 2016
- Open report
Michigan Trailer Park
Arizona · serves 400 people · about 290 in Phoenix
2 results above the health goal. The worst: Lead at 14 ppb, above the health goal.
No health-based violations since 2016
- Open report
Adjc Adobe Mountain School
Arizona · serves 680 people · under 100 in Phoenix
1 result above the limit’s level with no violation recorded and 1 result above the health goal. The worst: Arsenic at 10.5 ppb, above the limit’s level, no violation.
1 health-based violation since 2016
- Open report
67 Ave Property Owners Association
Arizona · serves 40 people · nearly all in Phoenix
2 results above the health goal. The worst: Arsenic at 5.2 ppb, above the health goal.
2 health-based violations since 2016
- Open report
Epcor - North East Agua Fria
Arizona · serves 14,723 people · lists Phoenix among the places it serves
1 result above the health goal and 1 result above EPA’s health benchmark. The worst: Lithium at 37.2 ppb, above EPA’s health benchmark.
No health-based violations since 2016
- Open report
Rose Valley Water Company
Arizona · serves 6,202 people · lists Phoenix among the places it serves
1 result above the health goal and 1 result above EPA’s health benchmark. The worst: Lithium at 20.9 ppb, above EPA’s health benchmark.
No health-based violations since 2016
- Open report
Federal Correction Institution
Arizona · serves 1,500 people · lists Phoenix among the places it serves
1 result above the health goal. The worst: Arsenic at 7.6 ppb, above the health goal.
7 health-based violations since 2016
1 more utility in Phoenix
By EPA’s estimate, each serves fewer people in Phoenix than those above.
- Beardsley Water Company 3serves 96 people · lists Phoenix among the places it serves · no health-based violations since 2016
What handles it
Each of these is certified, on a certifier’s listing, for a result above a line in City of Phoenix’s water, which serves the most people here. Another utility’s report names what handles its own results.
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Countertop reverse osmosis
- IAPMO listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 58NSF/ANSI 401checked Oct. 4, 2026
Certified for: Arsenic, Lead
Aquasana SmartFlow Reverse Osmosis (AQ-SFRO2)
Under-sink reverse osmosis
- WQA listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 58NSF/ANSI 401checked Oct. 9, 2026
Certified for: Arsenic, Lead
Brondell Capella RC250 Reverse Osmosis System
Under-sink reverse osmosis
- WQA listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 58NSF/ANSI 401checked Oct. 9, 2026
Certified for: Arsenic, Lead
Water testing near Phoenix
The 3 labs Arizona certifies closest to Phoenix, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.
Legend Technical Services of Arizona, Inc. DBA Legend Analytical
Phoenix, AZ · under a mile
Motzz Laboratory, Inc.
Phoenix, AZ · under a mile
Alliance Technical Group, LLC – Phoenix
Phoenix, AZ · under a mile
ZIP codes in Phoenix
Which ZIP codes are in Phoenix: Census 2020 relationship files. Which utilities serve them, and how many people: EPA SDWIS and EPA’s service area map. Each utility’s results: EPA UCMR 5, EPA SDWIS, and EPA’s and the state’s compliance monitoring, as its report lists them. How they are measured: methodology. Certified labs: Arizona Department of Health Services, Arizona certified commercial drinking water laboratories; distances from the Census 2020 ZIP code tabulation area gazetteer.
Near Phoenix
Other towns in Maricopa County with a page of their own.
What to do next
- Read City of Phoenix’s full reportEvery result with its dates, the violations, and the certification claim that handles each finding.Open the report
- About LithiumWhat it does to health, where it comes from, and the certification claim that addresses it.About Lithium
- On a private well?No utility tests a well. A certified lab test is the first step.How to test well water