We read 17 results from City of Edinburg’s 2025 water quality report. No results over a legal limit; 5 above a health goal or guideline.
Serves about 85,224 people · Water system ID TX1080004 · 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 |
|---|---|---|---|---|
| Antimonyhighest measured · range ND to 1.1 · North Alamo WSC (purchased) · 2025 report, page 20 | 1.1 ppb | 1 ppb | 6 ppb | Above the health goal1.1x the health goal |
| Arsenichighest measured · range ND to 3.5 · McAllen Public Utilities (purchased), highest of 3 sources · 2025 report, page 19 | 3.5 ppb | 0.004 ppb | 10 ppb | Above the health goal875x the health goal |
| Gross beta (radioactivity)single sample · sampled 2023 · Edinburg plants · 2025 report, page 13 | 6.6 pCi/L | 0 pCi/L | 50 pCi/L | Above the health goalThe health goal is zero |
| Total coliform bacteriahighest month · Distribution system · 2025 report, page 13 | 1.11 % positive | 0 % positive | 5 % positive | Above the health goalThe health goal is zero |
| Uraniumsingle sample · sampled 2023 · Edinburg plants · 2025 report, page 13 | 2.5 ppb | 0.6 ppb | 30 ppb | Above the health goal4.2x the health goal |
| Bariumhighest measured · Edinburg plants · 2025 report, page 11 | 0.12 ppm | 2 ppm | 2 ppm | Below the health goal |
| Chloramineaverage · range 2.1 to 3.3 · Distribution system · 2025 report, page 10 | 2.9 ppm | None set | 4 ppm | Below the legal limit |
| Copper90th percentile of homes tested, 0 over the action level · Customer taps · 2025 report, page 16 | 0.13 ppm | 0.3 ppm | 1.3 ppm (action level) | Below the health goal |
| Cyanidehighest measured · McAllen Public Utilities (purchased), highest of 2 sources · 2025 report, page 19 | 120 ppb | 150 ppb | 200 ppb | Below the health goal |
| Fluoridehighest measured · Edinburg plants, highest of 3 sources · 2025 report, page 12 | 0.55 ppm | 1 ppm | 4 ppm | Below the health goal |
| Lead90th percentile of homes tested, 0 over the action level · Customer taps · 2025 report, page 16 | Not detected | 0.2 ppb | 15 ppb (action level) | Not detected |
| Nitrate (as N)highest measured · range ND to 0.47 · McAllen Public Utilities (purchased), highest of 3 sources · 2025 report, page 19 | 0.47 ppm | 10 ppm | 10 ppm | Below the health goal |
| Seleniumhighest measured · range ND to 4.4 · North Alamo WSC (purchased), highest of 2 sources · 2025 report, page 20 | 4.4 ppb | 30 ppb | 50 ppb | Below the health goal |
| Turbidity (cloudiness)highest measured · listed as a violation in the report · SWTP - West, highest of 2 sources · 2025 report, page 10 | 0.75 NTU | None set | 1 NTU | Below the legal limit |
| Dibromochloromethanehighest measured · range 7.3 to 27.6 · McAllen Public Utilities (purchased), highest of 2 sources · 2025 report, page 19 | 27.6 ppb | None set | None | No health limit |
| Nickelhighest measured · printed as 0.003 mg/L · Edinburg plants · 2025 report, page 12 | 3 ppb | None set | None | No health limit |
| Total organic carbonhighest measured · range 2.05 to 5.29 · Edinburg plants · 2025 report, page 10 | 5.29 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. 2 numbers we weren’t sure about are held back until a person checks.
EPA testing for PFAS and lithium
EPA’s own nationwide testing (UCMR 5) found these in City of Edinburg’s water between Jan 2023 and Mar 2024. These are EPA lab results, separate from the district’s report. Anything not listed was not detected.
- PFOS4.5 pptFound in 1 of 8 samples · highest resultAbove the federal limit that takes effect in 2029 (4 ppt)
- PFBS3.4 pptFound in 1 of 8 samples · highest resultNo federal limit in force for this one
- Lithium37.8 ppbFound in 8 of 8 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 beta (radioactivity), Uranium
What removes it: Reverse osmosis.
Bacteria and viruses
Found: Total coliform bacteria
What removes it: UV purification (and tell your utility).
PFAS ("forever chemicals")
Found: PFOS (EPA testing)
What removes it: Reverse osmosis.
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