We read 21 results from City of Brenham’s 2025 water quality report. No results over a legal limit; 4 above a health goal or guideline.
Serves about 18,469 people · Water system ID TX2390001 · 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 |
|---|---|---|---|---|
| Aluminumhighest measured · 2025 report, page 7 | 0.25 ppm | — | 0.2 ppm guideline | Above the guideline1.3x the guideline (taste, odor or stains; not a health limit) |
| Chloritehighest measured · range ND to 0.48 · 2025 report, page 5 | 0.48 ppm | 0.05 ppm | 1 ppm | Above the health goal9.6x the health goal |
| Gross beta (radioactivity)highest measured · sampled 2023 · 2025 report, page 7 | 7.4 pCi/L | 0 pCi/L | 50 pCi/L | Above the health goalThe health goal is zero |
| pHhighest measured · range 8.64 to 9.69 · 2025 report, page 7 | 9.69 | — | — | Outside the normal rangeAlkaline water can leave scale |
| Bariumhighest measured · 2025 report, page 6 | 0.08 ppm | 2 ppm | 2 ppm | Below the health goal |
| Chloramineaverage · range 2.5 to 5.8 · 2025 report, page 5 | 2.7 ppm | None set | 4 ppm | Below the legal limit |
| Chloridehighest measured · 2025 report, page 7 | 59 ppm | — | 250 ppm guideline | Within the guideline |
| Chlorine dioxideaverage · range 20 to 650 · printed as 0.03 ppm · 2025 report, page 5 | 30 ppb | None set | 800 ppb | Below the legal limit |
| Copper90th percentile of homes tested, 0 over the action level · Customer taps · 2025 report, page 4 | 0.02 ppm | 0.3 ppm | 1.3 ppm (action level) | Below the health goal |
| Cyanidehighest measured · sampled 2023 · 2025 report, page 6 | 140 ppb | 150 ppb | 200 ppb | Below the health goal |
| Disinfection byproducts (HAA5)highest running annual average · 2025 report, page 6 | 23 ppb | None set | 60 ppb | Below the legal limit |
| Disinfection byproducts (TTHM)highest running annual average · 2025 report, page 5 | 49 ppb | None set | 80 ppb | Below the legal limit |
| Lead90th percentile of homes tested, 0 over the action level · Customer taps · 2025 report, page 4 | Not detected | 0.2 ppb | 15 ppb (action level) | Not detected |
| Nitrate (as N)highest measured · 2025 report, page 7 | 0.37 ppm | 10 ppm | 10 ppm | Below the health goal |
| Sulfatehighest measured · 2025 report, page 7 | 46 ppm | — | 250 ppm guideline | Within the guideline |
| Calciumhighest measured · 2025 report, page 7 | 27.9 ppm | None set | None | No health limit |
| Dibromochloromethanehighest measured · range 2.8 to 5.1 · 2025 report, page 6 | 5.1 ppb | None set | None | No health limit |
| Hardnesshighest measured · 2025 report, page 7 | 5.6 gpg (95.8 ppm) | — | — | Moderately hard |
| Magnesiumhighest measured · 2025 report, page 7 | 6.35 ppm | None set | None | No health limit |
| Potassiumhighest measured · 2025 report, page 7 | 7.91 ppm | None set | None | No health limit |
| Sodiumhighest measured · 2025 report, page 7 | 42.6 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 City of Brenham’s water between Feb 2023 and Nov 2023. These are EPA lab results, separate from the district’s report. Anything not listed was not detected.
- Lithium18.4 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 beta (radioactivity)
What removes it: Reverse osmosis.
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