Platte County Pwsd 3 water quality

Updated 2026-10-22 · Missouri · Affiliate disclosure

We read 15 results from Platte County Pwsd 3’s 2025 water quality report. No results over a legal limit; 1 above a health goal or guideline.

Serves about 794 people · Water system ID MO1024477 · Read the district’s 2025 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 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.

ContaminantResultHealth goalLegal limitWhat it means
Lead90th percentile of homes tested, 0 over the action level · Customer taps · 2025 report, page 21.6 ppb0.2 ppb15 ppb (action level)Above the health goal8x the health goal
Chloridehighest measured · range 25.1 to 25.1 · sampled 2023 · Purchased water (wholesaler) · 2025 report, page 325.1 ppm—250 ppm guidelineWithin the guideline
Copper90th percentile of homes tested, 0 over the action level · Customer taps · 2025 report, page 20.08 ppm0.3 ppm1.3 ppm (action level)Below the health goal
Disinfection byproducts (HAA5)highest running annual average · range 14.8 to 18.4 · DBPDUAL-02, highest of 3 sources · 2025 report, page 218 ppbNone set60 ppbBelow the legal limit
Disinfection byproducts (TTHM)highest running annual average · range 57.8 to 82.1 · DBPDUAL-02, highest of 3 sources · 2025 report, page 279 ppbNone set80 ppbBelow the legal limit
Ironhighest measured · range 0.02 to 0.02 · sampled 2023 · Purchased water (wholesaler) · 2025 report, page 30.02 ppm—0.3 ppm guidelineWithin the guideline
pHhighest measured · range 8.42 to 8.42 · sampled 2023 · Purchased water (wholesaler) · 2025 report, page 38.42——Normal range
Sulfatehighest measured · range 46.6 to 46.6 · sampled 2023 · Purchased water (wholesaler) · 2025 report, page 346.6 ppm—250 ppm guidelineWithin the guideline
Total dissolved solidshighest measured · range 239 to 239 · sampled 2023 · Purchased water (wholesaler) · 2025 report, page 3239 ppm—500 ppm guidelineWithin the guideline
Alkalinityhighest measured · range 160 to 160 · sampled 2023 · Purchased water (wholesaler) · 2025 report, page 3160 ppmNone setNoneNo health limit
Calciumhighest measured · range 38.7 to 38.7 · sampled 2023 · Purchased water (wholesaler) · 2025 report, page 338.7 ppmNone setNoneNo health limit
Hardnesshighest measured · range 8.83 to 8.83 · sampled 2023 · Purchased water (wholesaler) · 2025 report, page 38.83 gpg (151 ppm)——Hard
Magnesiumhighest measured · range 13.2 to 13.2 · sampled 2023 · Purchased water (wholesaler) · 2025 report, page 313.2 ppmNone setNoneNo health limit
Potassiumhighest measured · range 4.28 to 4.28 · sampled 2023 · Purchased water (wholesaler) · 2025 report, page 34.28 ppmNone setNoneNo health limit
Sodiumhighest measured · range 15.6 to 15.6 · sampled 2023 · Purchased water (wholesaler) · 2025 report, page 315.6 ppmNone setNoneNo 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: Lead

What removes it: Certified carbon block or RO.

See filters that remove itWhat water filter removes lead?

More districts: Missouri water quality · All states · Something look wrong? Tell us