Community Water System · PWSID MO1024477

Platte County Pwsd 3

Serves 615 peopleGroundwater PurchasedOwner: Local GovernmentWeston, Missouri
Nothing open right now.

On record since 1995: 11 violations. 4 over the limit · 6 missed or late tests · 1 notice or report. Most recent began 2023-10-01.

For this year's test results, ask the utility for its annual Consumer Confidence Report. Every community system must publish one.

4Over the limit
0Treatment lapse
6Missed or late test
1Notice or report

More violations on record than 76% of active water systems in Missouri. Small systems with no staff chemist often rack up missed-test violations; big utilities rarely do.

The record, year by year

1995 · Missed or late test: 119952000200520102011 · Missed or late test: 12015 · Over the limit: 22015 · Over the limit: 220152016 · Over the limit: 120202022 · Over the limit: 12022 · Missed or late test: 22022 · Missed or late test: 22023 · Missed or late test: 22023 · Missed or late test: 22023 · Notice or report: 12025
One square = one violation, by the year it began. Empty columns are years with nothing on EPA's record.
36% over the limit · 455% missed or late test · 69% notice or report · 1

Across Missouri, 54% of violations are missed or late tests and 8% are water over a limit.

How far over the limit

at the limit2×5×10×100×+Trihalomethanes (TTHM)2022-04-01 · Trihalomethanes (TTHM): measured 83.00 UG/L vs limit 80.00 UG/L (1.0×)2016-01-01 · Trihalomethanes (TTHM): measured 95.00 UG/L vs limit 80.00 UG/L (1.2×)2015-10-01 · Trihalomethanes (TTHM): measured 88.00 UG/L vs limit 80.00 UG/L (1.1×)2015-07-01 · Trihalomethanes (TTHM): measured 84.00 UG/L vs limit 80.00 UG/L (1.1×)
Each dot is one over-the-limit violation: the measured value divided by the limit it broke, on a log scale. Most legal limits for chemicals are running averages set for a lifetime of drinking, so “just over” and “ten times over” are very different news. Hover a dot for the numbers.

Lead & copper at the tap

Utilities sample taps in homes most likely to have lead pipes, and report the 90th-percentile result: 9 in 10 homes sampled came in at or below this number. Above the red line (the action level) the utility must act. The action level is not a safe level; EPA's health goal for lead is zero. EPA's file does not date these results, so they are shown highest first.

Lead, 90th percentile 7 results on file · action level 15 ppb

1.6 ppb
1.6 ppb
1.6 ppb
0 ppb
0 ppb
0 ppb
0 ppb

Every violation on record

  1. 2023-10-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Back in compliance
  2. 2023-10-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Back in compliance
  3. 2023-05-14Public NoticePN Violation for NPDWR ViolationBack in compliance
  4. 2022-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 83.00 UG/L · limit 80.00 UG/LBack in compliance
  5. 2022-01-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Back in compliance
  6. 2022-01-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Back in compliance
  7. 2016-01-01Trihalomethanes (TTHM)MCL, Averagemeasured 95.00 UG/L · limit 80.00 UG/LBack in compliance
  8. 2015-10-01Trihalomethanes (TTHM)MCL, Averagemeasured 88.00 UG/L · limit 80.00 UG/LBack in compliance
  9. 2015-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 84.00 UG/L · limit 80.00 UG/LBack in compliance
  10. 2011-04-01Lead and Copper RuleLead Consumer NoticeBack in compliance
  11. 1995-01-01Lead and Copper RuleInitial Tap Sampling for Pb and CuBack in compliance

System details

Population served615
Service connections366
Water sourceGroundwater Purchased
System typeCommunity Water System
OwnerLocal Government
StatusActive
CityWeston
EPA ZIP on file64098-0000

Areas served

  • Weston, Platte County

Reading this record

Platte County Pwsd 3 is a community water system that draws from groundwater purchased and serves about 615 people in Weston, Missouri. Everything above comes from the EPA's Safe Drinking Water Information System (SDWIS), where states report every violation by every public water system.

Four kinds of violation. Only one is a measurement of the water: over the limit means a test came back above a legal maximum (an MCL). A treatment lapse means a required protective step was not done, such as disinfection, filtration, fixing a defect an inspector found, or filing a lead-pipe inventory. A missed or late test means a required test was skipped or never reported. That is the most common kind, and the most misread: it does not mean the water was bad, and it does not mean the water was fine. Notices and reports covers public notices and the annual Consumer Confidence Report.

Status. “Back in compliance” means the state recorded a return to compliance. “Period ended” means the violation's compliance period is over but no return to compliance was ever filed, which is common in older records. EPA's federal copy lags state records by months, so call the utility for anything current.