We read 17 results from City of Mesquite’s 2025 water quality report. No results over a legal limit; 5 above a health goal or guideline.
Serves about 152,020 people · Water system ID TX0570014 · 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 measured · range 1 to 1 · listed as a violation in the report · Source water (NTMWD) · 2025 report, page 4 | 1 ppb | 0.004 ppb | 10 ppb | Above the health goal250x the health goal |
| Chloriteaverage · range ND to 0.55 · Distribution system · 2025 report, page 4 | 0.18 ppm | 0.05 ppm | 1 ppm | Above the health goal3.5x the health goal |
| Copper90th percentile of homes tested, 1 over the action level · listed as a violation in the report · Customer taps · 2025 report, page 5 | 0.96 ppm | 0.3 ppm | 1.3 ppm (action level) | Above the health goal3.2x the health goal |
| Gross beta (radioactivity)highest measured · range 5.3 to 5.3 · listed as a violation in the report · Source water (NTMWD) · 2025 report, page 4 | 5.3 pCi/L | 0 pCi/L | 50 pCi/L | Above the health goalThe health goal is zero |
| Lead90th percentile of homes tested, 0 over the action level · listed as a violation in the report · Customer taps · 2025 report, page 5 | 1.39 ppb | 0.2 ppb | 15 ppb (action level) | Above the health goal7x the health goal |
| Atrazinehighest measured · range 0.1 to 0.1 · listed as a violation in the report · Source water (NTMWD) · 2025 report, page 4 | 0.1 ppb | 0.15 ppb | 3 ppb | Below the health goal |
| Bariumhighest measured · range 0.04 to 0.06 · listed as a violation in the report · Source water (NTMWD) · 2025 report, page 4 | 0.06 ppm | 2 ppm | 2 ppm | Below the health goal |
| Chloramineaverage · range 0.9 to 4 · Distribution system · 2025 report, page 4 | 2.15 ppm | None set | 4 ppm | Below the legal limit |
| Chlorine dioxideaverage · range ND to 790 · printed as 0.050 ppm · Treatment plant · 2025 report, page 4 | 50 ppb | None set | 800 ppb | Below the legal limit |
| Cyanidehighest measured · range 47 to 56 · listed as a violation in the report · Source water (NTMWD) · 2025 report, page 4 | 56 ppb | 150 ppb | 200 ppb | Below the health goal |
| Disinfection byproducts (HAA5)highest measured · range 10.4 to 31.4 · listed as a violation in the report · Distribution system · 2025 report, page 4 | 31.4 ppb | None set | 60 ppb | Below the legal limit |
| Fluoridehighest measured · range 0.35 to 0.49 · listed as a violation in the report · Source water (NTMWD) · 2025 report, page 4 | 0.49 ppm | 1 ppm | 4 ppm | Below the health goal |
| Nitrate (as N)highest measured · range 0.08 to 0.87 · listed as a violation in the report · Source water (NTMWD) · 2025 report, page 4 | 0.87 ppm | 10 ppm | 10 ppm | Below the health goal |
| Sulfatehighest measured · range 84.7 to 147 · Distribution system · 2025 report, page 5 | 147 ppm | — | 250 ppm guideline | Within the guideline |
| Turbidity (cloudiness)highest measured · listed as a violation in the report · Treatment plant · 2025 report, page 5 | 0.29 NTU | None set | 1 NTU | Below the legal limit |
| Hardnesshighest measured · range 5.61 to 11.7 · Distribution system · 2025 report, page 5 | 11.7 gpg (200 ppm) | — | — | Very hard |
| Sodiumhighest measured · range 41.9 to 88 · Distribution system · 2025 report, page 5 | 88 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 Mesquite’s water between Jan 2025 and Nov 2025. These are EPA lab results, separate from the district’s report. Anything not listed was not detected.
- PFBS4.2 pptFound in 3 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.
Lead
Found: Copper, Lead
What removes it: Reverse osmosis or Certified carbon block or RO.
Radium and uranium
Found: Gross beta (radioactivity)
What removes it: Reverse osmosis.
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