We read 14 results from City of Ennis’s 2025 water quality report. No results over a legal limit; 3 above a health goal or guideline.
Serves about 21,203 people · Water system ID TX0700001 · 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 |
|---|---|---|---|---|
| Atrazinehighest measured · Treated water (Ennis plant) · 2025 report, page 4 | 0.2 ppb | 0.15 ppb | 3 ppb | Above the health goal1.3x the health goal |
| Copper90th percentile of homes tested, 0 over the action level · Customer taps · 2025 report, page 6 | 0.32 ppm | 0.3 ppm | 1.3 ppm (action level) | Above the health goal1.1x the health goal |
| Gross beta (radioactivity)highest measured · sampled 2023 · Treated water (Ennis plant) · 2025 report, page 5 | 8.2 pCi/L | 0 pCi/L | 50 pCi/L | Above the health goalThe health goal is zero |
| Bariumhighest measured · Treated water (Ennis plant) · 2025 report, page 4 | 0.06 ppm | 2 ppm | 2 ppm | Below the health goal |
| Chloramineaverage · range 3.58 to 3.79 · Distribution system · 2025 report, page 4 | 3.68 ppm | None set | 4 ppm | Below the legal limit |
| Cyanidehighest measured · Treated water (Ennis plant) · 2025 report, page 4 | 70.6 ppb | 150 ppb | 200 ppb | Below the health goal |
| Disinfection byproducts (HAA5)highest running annual average · 1407 S Cardinal St / 1703 Nichols St · 2025 report, page 5 | 22 ppb | None set | 60 ppb | Below the legal limit |
| Disinfection byproducts (TTHM)highest running annual average · 1407 S Cardinal St · 2025 report, page 5 | 43 ppb | None set | 80 ppb | Below the legal limit |
| Fluoridehighest measured · Treated water (Ennis plant) · 2025 report, page 4 | 0.24 ppm | 1 ppm | 4 ppm | Below the health goal |
| Nitrate (as N)highest measured · Treated water (Ennis plant) · 2025 report, page 5 | 0.06 ppm | 10 ppm | 10 ppm | Below the health goal |
| Turbidity (cloudiness)highest measured · Treated water (Ennis plant) · 2025 report, page 5 | 0.19 NTU | None set | 1 NTU | Below the legal limit |
| Dibromochloromethanehighest measured · range 5.27 to 9.97 · Distribution system · 2025 report, page 4 | 9.97 ppb | None set | None | No health limit |
| Nickelhighest measured · printed as 0.0012 ppm · Treated water (Ennis plant) · 2025 report, page 4 | 1.2 ppb | None set | None | No health limit |
| Total organic carbonhighest measured · range 2.65 to 4.95 · Treated water (Ennis plant) · 2025 report, page 5 | 4.95 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. 1 number we weren’t sure about is held back until a person checks.
EPA testing for PFAS and lithium
EPA’s own nationwide testing (UCMR 5) found these in City of Ennis’s water between Mar 2023 and Dec 2023. These are EPA lab results, separate from the district’s report. Anything not listed was not detected.
- PFBS7.2 pptFound in 4 of 4 samples · highest resultNo federal limit in force for this one
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.
Industrial chemicals and pesticides
Found: Atrazine
What removes it: Carbon block or RO.
Copper
Found: Copper
What removes it: Reverse osmosis.
Radium and uranium
Found: Gross beta (radioactivity)
What removes it: Reverse osmosis.
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