What EPA records show for Flowing Wells Irrigation District
EPA system ID AZ0410051 · serves Tucson, AZ · about 16,000 people (EPA records)
Here's what EPA has on file for this water system: its testing for newer contaminants like PFAS (UCMR 5), lead testing and violations. It's not a test of your tap, and there's no Water Score here.
Public EPA test results
Flowing Wells Irrigation District (EPA AZ0410051)
What EPA records show for Flowing Wells Irrigation District, as of October 14, 2026
Health-standard violation: Lead and Copper Rule, LEAD AND COPPER RULE REVISIONS, Oct 2024–Oct 2024 (EPA SDWIS).
Lead: 9 in 10 homes tested came in at or below 0 ppb, at or below EPA's 15 ppb action level (latest EPA result for a testing period that ran on or after July 1, 2021: Jan 1, 2023–Dec 31, 2025). This is one number for the whole water system, from homes the utility tested. It isn't a result for your home.
EPA's UCMR 5 testing looked for 30 contaminants here and found 7.
Source: EPA records (SDWIS, UCMR 5). SDWIS: data as of Oct 14, 2026. EPA UCMR 5 data, samples through June 2026.
Your water bill names your utility.
Does Flowing Wells Irrigation District use chloramine?
We didn't find chloramine in Flowing Wells Irrigation District's EPA treatment records. That's not a complete list; your utility's annual water quality report says which disinfectant it uses.
Reported results in EPA records (data as of Oct 14–15, 2026)
EPA's UCMR 5 testing looked for 30 contaminants here and found 7.
Lithium: found in 11 of 12 samples, average 72 µg/L, highest 228 µg/L (EPA UCMR 5 testing, Feb 2023–Aug 2023)
PFHxS (a PFAS): found in 5 of 12 samples, average 2.5 ppt, highest 9 ppt (EPA UCMR 5 testing, Feb 2023–Aug 2023)
PFOS (a PFAS): found in 2 of 12 samples, average 0.80 ppt, highest 6 ppt (EPA UCMR 5 testing, Feb 2023–Aug 2023)
PFOA (a PFAS): found in 2 of 12 samples, average 0.80 ppt, highest 5 ppt (EPA UCMR 5 testing, Feb 2023–Aug 2023)
PFBS (a PFAS): found in 2 of 12 samples, average 0.70 ppt, highest 4 ppt (EPA UCMR 5 testing, Feb 2023–Aug 2023)
PFPeA (a PFAS): found in 2 of 12 samples, average 0.60 ppt, highest 4 ppt (EPA UCMR 5 testing, Feb 2023–Aug 2023)
PFHxA (a PFAS): found in 2 of 12 samples, average 0.50 ppt, highest 3 ppt (EPA UCMR 5 testing, Feb 2023–Aug 2023)
Lead: 9 in 10 homes tested came in at or below 0 ppb, at or below EPA's 15 ppb action level (latest EPA result for a testing period that ran on or after July 1, 2021: Jan 1, 2023–Dec 31, 2025). This is one number for the whole water system, from homes the utility tested. It isn't a result for your home.
Health-standard violation: Lead and Copper Rule, LEAD AND COPPER RULE REVISIONS, Oct 2024–Oct 2024 (EPA SDWIS)
Source: EPA SDWIS (ECHO SDWA bulk download), data as of Oct 14, 2026
Source: EPA UCMR 5 occurrence data, data as of Oct 15, 2026
These are EPA's public records for this water system, shown as of October 14, 2026. If you represent this utility, or think a record here is wrong, tell us: Report an error. If the error is in EPA's own records, your state drinking water program can correct it there, and this page updates at our next data refresh.
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