We read 21 results from Chandler City of’s 2025 water quality report. No results over a legal limit; 7 above a health goal or guideline.
Serves about 247,328 people · Water system ID AZ0407090 · Read the district’s 2025 report (opens in a new tab)
Open this district in the water lookupCompare with your own test results, see the district map and get matched filters.
Results from the 2025 report
Each number is copied from the district’s report and links to the page it’s printed on. Where the report lists several plants, wells or purchased water, the highest is shown.
| Contaminant | Result | Health goal | Legal limit | What it means |
|---|---|---|---|---|
| Arsenichighest measured · range 1.4 to 9.5 · Entry points · 2025 report, page 5 | 9.5 ppb | 0.004 ppb | 10 ppb | Above the health goal2,375x the health goal |
| Fluoridehighest measured · range 0.15 to 1.5 · Entry points · 2025 report, page 5 | 1.5 ppm | 1 ppm | 4 ppm | Above the health goal1.5x the health goal |
| Gross alpha (radioactivity)highest measured · range ND to 2.6 · Entry points · 2025 report, page 5 | 2.6 pCi/L | 0 pCi/L | 15 pCi/L | Above the health goalThe health goal is zero |
| Lead90th percentile of homes tested, 0 over the action level · Customer taps · 2025 report, page 6 | 1.9 ppb | 0.2 ppb | 15 ppb (action level) | Above the health goal9.5x the health goal |
| PFOA (a PFAS)average · range ND to 1.31 · Entry points · 2025 report, page 5 | 0.72 ppt | 0.007 ppt | 4 ppt from 2029 | Above the health goal103x the health goal |
| Radium (combined 226 + 228)highest measured · range ND to 1 · Entry points · 2025 report, page 5 | 1 pCi/L | 0 pCi/L | 5 pCi/L | Above the health goalThe health goal is zero |
| Uraniumhighest measured · range 1.2 to 6.8 · Entry points · 2025 report, page 5 | 6.8 ppb | 0.6 ppb | 30 ppb | Above the health goal11x the health goal |
| Bariumhighest measured · range 0.02 to 0.2 · Entry points · 2025 report, page 5 | 0.2 ppm | 2 ppm | 2 ppm | Below the health goal |
| Chlorinehighest running annual average · range 0.23 to 2.17 · Distribution system · 2025 report, page 4 | 0.93 ppm | None set | 4 ppm | Below the legal limit |
| Chromium (total)highest measured · range ND to 21 · Entry points · 2025 report, page 5 | 21 ppb | None set | 100 ppb | Below the legal limit |
| Copper90th percentile of homes tested, 0 over the action level · Customer taps · 2025 report, page 6 | 0.15 ppm | 0.3 ppm | 1.3 ppm (action level) | Below the health goal |
| Disinfection byproducts (HAA5)highest running annual average · range ND to 15 · Distribution system · 2025 report, page 4 | 12.3 ppb | None set | 60 ppb | Below the legal limit |
| Disinfection byproducts (TTHM)highest running annual average · range 2.3 to 77 · Distribution system · 2025 report, page 4 | 59 ppb | None set | 80 ppb | Below the legal limit |
| E. colias reported · Distribution system · 2025 report, page 4 | Not detected | 0 positive samples | 0 positive samples | Not detected |
| Nitrate (as N)highest measured · range 0.26 to 6.8 · Entry points · 2025 report, page 5 | 6.8 ppm | 10 ppm | 10 ppm | Below the health goal |
| PFHxS (a PFAS)average · range ND to 3.08 · Entry points · 2025 report, page 5 | 0.65 ppt | None set | 10 ppt from 2029 | Below the legal limit |
| PFNA (a PFAS)average · Entry points · 2025 report, page 5 | 0.45 ppt | None set | 10 ppt from 2029 | Below the legal limit |
| PFOS (a PFAS)average · range ND to 1.14 · Entry points · 2025 report, page 5 | 0.61 ppt | 1 ppt | 4 ppt from 2029 | Below the health goal |
| Seleniumhighest measured · range ND to 15 · Entry points · 2025 report, page 5 | 15 ppb | 30 ppb | 50 ppb | Below the health goal |
| Turbidity (cloudiness)highest measured · Surface water plant · 2025 report, page 4 | 0.18 NTU | None set | 1 NTU | Below the legal limit |
| Sodiumhighest measured · range 100 to 280 · Entry points · 2025 report, page 5 | 280 ppm | None set | None | No health limit |
Utility results describe the whole system, measured where water enters the pipes, not your tap. Your home’s plumbing can add lead or copper.
EPA testing for PFAS and lithium
EPA’s own nationwide testing (UCMR 5) found these in Chandler City of’s water between Jul 2023 and Apr 2025. These are EPA lab results, separate from the district’s report. Anything not listed was not detected.
- PFBS12 pptFound in 10 of 55 samples · highest resultNo federal limit in force for this one
- Lithium305 ppbFound in 55 of 55 samples · highest resultAbove EPA’s health reference level of 10 ppb (a guide, not a legal limit)
Source: EPA UCMR 5 occurrence data. The highest single result is shown; one high sample doesn’t mean every glass is that high.
What you can do
Nothing here is an emergency notice: if the district has a violation, it must tell customers directly. If you’d like to lower these at your tap, these are the treatments that remove them, and the catalog shows the models certified for each. Ranking is by certified removal; commissions never change the order.
Fluoride
Found: Fluoride
What removes it: Reverse osmosis.
Radium and uranium
Found: Gross alpha (radioactivity), Radium (combined 226 + 228), Uranium
What removes it: Reverse osmosis.
Lead
Found: Lead
What removes it: Certified carbon block or RO.
PFAS ("forever chemicals")
Found: PFOA (a PFAS)
What removes it: Reverse osmosis.
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