We read 14 results from Arizona Water Co - Apache Junction’s 2025 water quality report. No results over a legal limit; 3 above a health goal or guideline.
Serves about 62,055 people · Water system ID AZ0411004 · Read the district’s 2025 report (opens in a new tab)
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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 running annual average · range 1.4 to 5.7 · Wells · 2025 report, page 1 | 5.7 ppb | 0.004 ppb | 10 ppb | Above the health goal1,425x the health goal |
| Gross alpha (radioactivity)single sample · sampled 2024 · Wells · 2025 report, page 1 | 2.6 pCi/L | 0 pCi/L | 15 pCi/L | Above the health goalThe health goal is zero |
| Radium (combined 226 + 228)single sample · sampled 2024 · Wells · 2025 report, page 1 | 0.8 pCi/L | 0 pCi/L | 5 pCi/L | Above the health goalThe health goal is zero |
| Bariumhighest measured · range 0.05 to 0.16 · Wells · 2025 report, page 1 | 0.16 ppm | 2 ppm | 2 ppm | Below the health goal |
| Chlorineaverage · range 1.51 to 1.66 · Distribution system · 2025 report, page 1 | 1.6 ppm | None set | 4 ppm | Below the legal limit |
| Chromium (total)highest measured · range 8.4 to 11 · sampled 2024 · Wells · 2025 report, page 1 | 11 ppb | None set | 100 ppb | Below the legal limit |
| Copper90th percentile of homes tested, 0 over the action level · Customer taps · 2025 report, page 1 | 0.22 ppm | 0.3 ppm | 1.3 ppm (action level) | Below the health goal |
| Disinfection byproducts (HAA5)highest running annual average · range ND to 4.2 · Distribution system · 2025 report, page 1 | 1.1 ppb | None set | 60 ppb | Below the legal limit |
| Disinfection byproducts (TTHM)highest running annual average · range 0.5 to 26.2 · Distribution system · 2025 report, page 1 | 16.1 ppb | None set | 80 ppb | Below the legal limit |
| Fluoridehighest measured · range 0.72 to 0.87 · sampled 2024 · Wells · 2025 report, page 1 | 0.87 ppm | 1 ppm | 4 ppm | Below the health goal |
| Lead90th percentile of homes tested, 0 over the action level · Customer taps · 2025 report, page 1 | Not detected | 0.2 ppb | 15 ppb (action level) | Not detected |
| Nitrate (as N)highest measured · range ND to 1.59 · Wells · 2025 report, page 1 | 1.59 ppm | 10 ppm | 10 ppm | Below the health goal |
| Lithiumaverage · range 590 to 796 · sampled 2024 · Entry points (UCMR5) · 2025 report, page 1 | 733 ppb | None set | None | No health limit |
| Sodiumhighest measured · range 160 to 180 · sampled 2024 · Wells · 2025 report, page 1 | 180 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 Arizona Water Co - Apache Junction’s water between Jun 2024 and Dec 2024. These are EPA lab results, separate from the district’s report. Anything not listed was not detected.
- Lithium796 ppbFound in 4 of 4 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.
Radium and uranium
Found: Gross alpha (radioactivity), Radium (combined 226 + 228)
What removes it: Reverse osmosis.
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