We read 18 results from Graham Pws’s 2025 water quality report. No results over a legal limit; 3 above a health goal or guideline.
Serves about 170 people · Water system ID MO1010319 · 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 1.16 to 1.16 · sampled 2023 · 2025 report, page 2 | 1.16 ppb | 0.004 ppb | 10 ppb | Above the health goal290x the health goal |
| Copper90th percentile of homes tested, 0 over the action level · Customer taps · 2025 report, page 2 | 0.54 ppm | 0.3 ppm | 1.3 ppm (action level) | Above the health goal1.8x the health goal |
| Lead90th percentile of homes tested, 0 over the action level · Customer taps · 2025 report, page 2 | 0.85 ppb | 0.2 ppb | 15 ppb (action level) | Above the health goal4.3x the health goal |
| Bariumhighest measured · range 0.14 to 0.14 · sampled 2023 · 2025 report, page 2 | 0.14 ppm | 2 ppm | 2 ppm | Below the health goal |
| Chloridehighest measured · range 27.3 to 27.3 · sampled 2023 · 2025 report, page 2 | 27.3 ppm | — | 250 ppm guideline | Within the guideline |
| Ironhighest measured · range 0.0066 to 0.0066 · sampled 2023 · 2025 report, page 2 | 0.0066 ppm | — | 0.3 ppm guideline | Within the guideline |
| Manganesehighest measured · range 0.0047 to 0.0047 · sampled 2023 · 2025 report, page 2 | 0.0047 ppm | — | 0.05 ppm guideline | Within the guideline |
| Nitrate (as N)highest measured · range 3.34 to 3.34 · 2025 report, page 2 | 3.34 ppm | 10 ppm | 10 ppm | Below the health goal |
| pHhighest measured · range 7.26 to 7.26 · sampled 2023 · 2025 report, page 2 | 7.26 | — | — | Normal range |
| Sulfatehighest measured · range 29 to 29 · sampled 2023 · 2025 report, page 2 | 29 ppm | — | 250 ppm guideline | Within the guideline |
| Total dissolved solidshighest measured · range 285 to 285 · sampled 2023 · 2025 report, page 2 | 285 ppm | — | 500 ppm guideline | Within the guideline |
| Zinchighest measured · range 0.0021 to 0.0021 · sampled 2023 · 2025 report, page 2 | 0.0021 ppm | — | 5 ppm guideline | Within the guideline |
| Alkalinityhighest measured · range 196 to 196 · sampled 2023 · 2025 report, page 2 | 196 ppm | None set | None | No health limit |
| Calciumhighest measured · range 68.7 to 68.7 · sampled 2023 · 2025 report, page 2 | 68.7 ppm | None set | None | No health limit |
| Hardnesshighest measured · range 12.9 to 12.9 · sampled 2023 · 2025 report, page 2 | 12.9 gpg (221 ppm) | — | — | Very hard |
| Magnesiumhighest measured · range 12 to 12 · sampled 2023 · 2025 report, page 2 | 12 ppm | None set | None | No health limit |
| Nickelhighest measured · range 4.76 to 4.76 · printed as 0.00476 MG/L · sampled 2023 · 2025 report, page 2 | 4.76 ppb | None set | None | No health limit |
| Sodiumhighest measured · range 15.9 to 15.9 · sampled 2023 · 2025 report, page 2 | 15.9 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.
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.
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