Is Green Valley, AZ tap water safe?
The short answer
1 of the 9 utilities serving Green Valley has a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and CDC’s records: Mountain View Rv Ranch.
Community WC of Green Valley, 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 166 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 Green Valley’s ZIP codes, from EPA’s estimates.
- Open report
Community WC of Green Valley
Arizona · serves 22,085 people · about 1,700 in Green Valley
1 result above the health goal and 1 result above EPA’s health benchmark. The worst: Lithium at 166 ppb, above EPA’s health benchmark.
No health-based violations since 2016
- Open report
Green Valley Dwid
Arizona · serves 8,687 people · about 510 in Green Valley
1 result above the health goal and 1 result above EPA’s health benchmark. The worst: Lithium at 30 ppb, above EPA’s health benchmark.
No health-based violations since 2016
- Open report
Quail Creek Water Company
Arizona · serves 6,812 people · about 420 in Green Valley
1 result above the health goal and 1 result above EPA’s health benchmark. The worst: Lithium at 42 ppb, above EPA’s health benchmark.
No health-based violations since 2016
- Open report
Gw Farmers Water Co - Santa Rita Springs
Arizona · serves 3,235 people · about 200 in Green Valley
1 result above EPA’s new limit, which takes effect in 2029, 1 result above the health goal and 1 result above EPA’s health benchmark. The worst: PFOS at 5.0 ppt, above EPA’s new limit, which takes effect in 2029.
No health-based violations since 2016
- Open report
Gw Farmers Water Co - Continental
Arizona · serves 4,475 people · about 150 in Green Valley
1 result above the health goal and 1 result above EPA’s health benchmark. The worst: Lithium at 88 ppb, above EPA’s health benchmark.
No health-based violations since 2016
- Open report
Valle Verde del Norte
Arizona · serves 300 people · under 100 in Green Valley
1 result above the health goal. The worst: Arsenic at 1.4 ppb, above the health goal.
No health-based violations since 2016
- Open report
Gw Saguaro Dist Water Co - Las Quintas
Arizona · serves 3,055 people · lists Green Valley among the places it serves
2 results above the health goal and 1 result above EPA’s health benchmark. The worst: Lithium at 31 ppb, above EPA’s health benchmark.
No health-based violations since 2016
- Open report
Gw Farmers Water Co - Sahuarita
Arizona · serves 396 people · lists Green Valley among the places it serves
2 results above the health goal. The worst: Uranium at 16 ppb, above the health goal.
No health-based violations since 2016
- Open report
Mountain View Rv Ranch
Arizona · serves 100 people · lists Green Valley among the places it serves
2 results above the health goal. The worst: Arsenic at 6.9 ppb, above the health goal.
2 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 Community WC of Green Valley’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 Green Valley
The 3 labs Arizona certifies closest to Green Valley, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.
Turner Laboratories, Inc.
Tucson, AZ · about 27 miles
Complete Analytical Services, LLC
Tucson, AZ · about 27 miles
Legend Technical Services of Arizona, Inc. DBA Legend Analytical
Tucson, AZ · about 27 miles
Which ZIP codes are in Green Valley: 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 Green Valley
Other towns in Pima County with a page of their own.
What to do next
- Read Community WC of Green Valley’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