Is Parker, AZ tap water safe?
The short answer
8 of the 9 utilities serving Parker have a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and CDC’s records: Colorado River Regional Water System, Epcor - Lakeside, Epcor - Moovalya Keys and 5 more.
Colorado River Regional Water System, which serves the most people here, has 1 result above the health goal and 1 result above EPA’s health benchmark. The worst: Lithium at 150 ppb, above EPA’s health benchmark. Health goals are stricter than legal limits and are not enforced.
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 Parker’s ZIP codes, from EPA’s estimates.
- Open report
Colorado River Regional Water System
Arizona · serves 3,476 people · under 100 in Parker
1 result above the health goal and 1 result above EPA’s health benchmark. The worst: Lithium at 150 ppb, above EPA’s health benchmark.
2 health-based violations since 2016
- Open report
Town of Parker
Arizona · serves 3,360 people · under 100 in Parker
Nothing in its records is above a health goal.
No health-based violations since 2016
- Open report
Epcor - Lakeside
Arizona · serves 1,775 people · under 100 in Parker
1 result above the health goal. The worst: Arsenic at 2.8 ppb, above the health goal.
7 health-based violations since 2016
- Open report
Epcor - Moovalya Keys
Arizona · serves 1,298 people · under 100 in Parker
2 results above the health goal. The worst: Lead at 6.2 ppb, above the health goal.
13 health-based violations since 2016
- Open report
Epcor - Holiday Harbor
Arizona · serves 559 people · under 100 in Parker
1 result above the health goal. The worst: Arsenic at 2.8 ppb, above the health goal.
5 health-based violations since 2016
- Open report
Epcor - Marina Village
Arizona · serves 528 people · under 100 in Parker
1 result above the health goal. The worst: Arsenic at 2.7 ppb, above the health goal.
8 health-based violations since 2016
- Open report
Epcor - Parker Dam
Arizona · serves 429 people · under 100 in Parker
1 result above the health goal. The worst: Arsenic at 2.7 ppb, above the health goal.
9 health-based violations since 2016
- Open report
Cienega Water Company Inc
Arizona · serves 108 people · under 100 in Parker
1 result above the legal limit and 1 result above the health goal. The worst: Fluoride at 4.6 ppm, above the legal limit.
6 health-based violations since 2016
- Open report
Epcor - Rio Lindo
Arizona · serves 79 people · under 100 in Parker
1 result above the health goal. The worst: Arsenic at 2.6 ppb, above the health goal.
6 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 Colorado River Regional Water System’s water, which serves the most people here. Another utility’s report names what handles its own results.
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Brita Tahoe Pitcher with Elite Filter (OB60, OB06)
Pitcher
- WQA listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 13, 2026
- IAPMO listing:NSF/ANSI 53checked Oct. 13, 2026
Certified for: Lead
Brita Everyday Pitcher with Elite Filter (OB46, OB06)
Pitcher
- WQA listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 13, 2026
Certified for: Lead
PUR PLUS 11-Cup Pitcher (PPT111W)
Pitcher
- NSF listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 4, 2026
- WQA listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 4, 2026
- IAPMO listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 4, 2026
Certified for: Lead
Water testing near Parker
The lab Arizona certifies closest to Parker, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.
Mohave Environmental Labs
Bullhead City, AZ · about 74 miles
ZIP codes in Parker
Which ZIP codes are in Parker: 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 Parker
Other towns in La Paz County with a page of their own.
What to do next
- Read Colorado River Regional Water System’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