We read 9 results from City of Tomball’s 2018 water quality report. No results over a legal limit; 4 above a health goal or guideline.
Serves about 17,532 people · Water system ID TX1010026 · Read the district’s 2018 report (opens in a new tab)
Open this district in the water lookupCompare with your own test results, see the district map and get matched filters.
Results from the 2018 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 |
|---|---|---|---|---|
| Copper90th percentile of homes tested, 0 over the action level · sampled 2017 · 2018 report, page 2 | 0.57 ppm | 0.3 ppm | 1.3 ppm (action level) | Above the health goal1.9x the health goal |
| Gross beta (radioactivity)highest measured · range 4.2 to 4.2 · sampled 2017 · 2018 report, page 3 | 4.2 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 · sampled 2017 · 2018 report, page 2 | 1 ppb | 0.2 ppb | 15 ppb (action level) | Above the health goal5x the health goal |
| Radium (combined 226 + 228)highest measured · range 1.5 to 1.5 · sampled 2016 · 2018 report, page 3 | 1.5 pCi/L | 0 pCi/L | 5 pCi/L | Above the health goalThe health goal is zero |
| Bariumhighest measured · range 0.14 to 0.29 · sampled 2017 · 2018 report, page 3 | 0.29 ppm | 2 ppm | 2 ppm | Below the health goal |
| Chlorineaverage · range 0.2 to 3.5 · 2018 report, page 3 | 2.04 ppm | None set | 4 ppm | Below the legal limit |
| Disinfection byproducts (TTHM)as reported · range ND to 6.8 · 2018 report, page 2 | 7 ppb | None set | 80 ppb | Below the legal limit |
| Fluoridehighest measured · range 0.34 to 0.75 · sampled 2017 · 2018 report, page 3 | 0.75 ppm | 1 ppm | 4 ppm | Below the health goal |
| Nitrate (as N)highest measured · range 0.01 to 0.13 · 2018 report, page 3 | 0.13 ppm | 10 ppm | 10 ppm | Below the health goal |
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 Tomball’s water between Feb 2024 and Aug 2024. These are EPA lab results, separate from the district’s report. Anything not listed was not detected.
- Lithium27.1 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.
Lead
Found: Copper, Lead
What removes it: Reverse osmosis or Certified carbon block or RO.
Radium and uranium
Found: Gross beta (radioactivity), Radium (combined 226 + 228)
What removes it: Reverse osmosis.
More districts: Texas water quality · All states · Something look wrong? Tell us