Is Cornville, AZ tap water safe?
The short answer
2 of the 3 utilities serving Cornville have a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and CDC’s records: Cs Oak Creek Public Service LLC and Oak Creek Valley.
Cottonwood Municipal Water Vsf1, which serves the most people here, has 1 result above the health goal. The worst: Arsenic at 4.7 ppb, above the health goal. 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 Cornville’s ZIP codes, from EPA’s estimates.
- Open report
Cottonwood Municipal Water Vsf1
Arizona · serves 2,196 people · about 260 in Cornville
1 result above the health goal. The worst: Arsenic at 4.7 ppb, above the health goal.
No health-based violations since 2016
- Open report
Cs Oak Creek Public Service LLC
Arizona · serves 650 people · about 170 in Cornville
1 result above the legal limit and 1 result above the health goal. The worst: Arsenic at 12.2 ppb, above the legal limit.
1 health-based violation since 2016
- Open report
Oak Creek Valley
Arizona · serves 450 people · under 100 in Cornville
1 result above the health goal. The worst: Arsenic at 8.7 ppb, above the health goal.
1 health-based violation since 2016
What handles it
Each of these is certified, on a certifier’s listing, for a result above a line in Cottonwood Municipal Water Vsf1’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
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
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
Water testing near Cornville
The 3 labs Arizona certifies closest to Cornville, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.
Bradshaw Mountain Environmental Inc.
Prescott Valley, AZ · about 20 miles
Inner Basin Environmental, LLC
Flagstaff, AZ · about 43 miles
Nortest Analytical
Flagstaff, AZ · about 43 miles
ZIP codes in Cornville
Which ZIP codes are in Cornville: 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 Cornville
Other towns in Yavapai County with a page of their own.
What to do next
- Read Cottonwood Municipal Water Vsf1’s full reportEvery result with its dates, the violations, and the certification claim that handles each finding.Open the report
- Filters for ArsenicRanked by certification and what they cost over five years.The best reverse osmosis systems, ranked
- On a private well?No utility tests a well. A certified lab test is the first step.How to test well water