We read 8 results from City of Melissa’s 2025 water quality report. No results over a legal limit; 2 above a health goal or guideline.
Serves about 18,020 people · Water system ID TX0430040 · 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 · NTMWD Wylie WTPs (supplier) · 2025 report, page 11 | 1 ppb | 0.004 ppb | 10 ppb | Above the health goal250x the health goal |
| Gross beta (radioactivity)highest measured · sampled 2024 · NTMWD Wylie WTPs (supplier) · 2025 report, page 11 | 5.3 pCi/L | 0 pCi/L | 50 pCi/L | Above the health goalThe health goal is zero |
| Atrazinehighest measured · NTMWD Wylie WTPs (supplier) · 2025 report, page 12 | 0.1 ppb | 0.15 ppb | 3 ppb | Below the health goal |
| Bariumhighest measured · range 0.04 to 0.06 · NTMWD Wylie WTPs (supplier) · 2025 report, page 11 | 0.06 ppm | 2 ppm | 2 ppm | Below the health goal |
| Cyanidehighest measured · range 47 to 56 · NTMWD Wylie WTPs (supplier) · 2025 report, page 11 | 56 ppb | 150 ppb | 200 ppb | Below the health goal |
| Fluoridehighest measured · range 0.35 to 0.49 · NTMWD Wylie WTPs (supplier) · 2025 report, page 11 | 0.49 ppm | 1 ppm | 4 ppm | Below the health goal |
| Nitrate (as N)highest measured · range 0.08 to 0.87 · NTMWD Wylie WTPs (supplier) · 2025 report, page 11 | 0.87 ppm | 10 ppm | 10 ppm | Below the health goal |
| PFBA (a PFAS)single sample · printed as 0.008 ppb · sampled 2024 · 2025 report, page 10 | 8 ppt | 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.
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)
What removes it: Reverse osmosis.
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