Community Water System · PWSID MO1010839

Waverly Pws

Serves 800 peopleGroundwater PurchasedOwner: Local GovernmentWaverly, Missouri
Nothing open right now.

On record since 1994: 17 violations. 11 over the limit · 1 treatment lapse · 2 missed or late tests · 3 notices or reports. Most recent began 2024-11-01.

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

11Over the limit
1Treatment lapse
2Missed or late test
3Notice or report

More violations on record than 85% 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

1994 · Missed or late test: 1199520002003 · Notice or report: 120052006 · Notice or report: 1201020152016 · Over the limit: 32016 · Over the limit: 32016 · Over the limit: 32016 · Notice or report: 12017 · Over the limit: 42017 · Over the limit: 42017 · Over the limit: 42017 · Over the limit: 42018 · Over the limit: 42018 · Over the limit: 42018 · Over the limit: 42018 · Over the limit: 420202024 · Treatment lapse: 12024 · Missed or late test: 12025
One square = one violation, by the year it began. Empty columns are years with nothing on EPA's record.
65% over the limit · 116% treatment lapse · 112% missed or late test · 218% notice or report · 3

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)2018-10-01 · Trihalomethanes (TTHM): measured 86.00 UG/L vs limit 80.00 UG/L (1.1×)2018-07-01 · Trihalomethanes (TTHM): measured 113.00 UG/L vs limit 80.00 UG/L (1.4×)2018-04-01 · Trihalomethanes (TTHM): measured 89.70 UG/L vs limit 80.00 UG/L (1.1×)2018-01-01 · Trihalomethanes (TTHM): measured 87.73 UG/L vs limit 80.00 UG/L (1.1×)2017-10-01 · Trihalomethanes (TTHM): measured 91.00 UG/L vs limit 80.00 UG/L (1.1×)2017-07-01 · Trihalomethanes (TTHM): measured 95.00 UG/L vs limit 80.00 UG/L (1.2×)2017-04-01 · Trihalomethanes (TTHM): measured 99.00 UG/L vs limit 80.00 UG/L (1.2×)2017-01-01 · Trihalomethanes (TTHM): measured 111.00 UG/L vs limit 80.00 UG/L (1.4×)2016-10-01 · Trihalomethanes (TTHM): measured 111.00 UG/L vs limit 80.00 UG/L (1.4×)2016-07-01 · Trihalomethanes (TTHM): measured 111.00 UG/L vs limit 80.00 UG/L (1.4×)2016-04-01 · 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 6 results on file · action level 15 ppb

9.5 ppb
6.7 ppb
5 ppb
4.7 ppb
4.2 ppb
4.2 ppb

Every violation on record

  1. 2024-11-01DBP Stage 1Treatment Technique No Certif. OperatorBack in compliance
  2. 2024-08-01Revised Total Coliform RuleMONBack in compliance
  3. 2018-10-01Trihalomethanes (TTHM)MCL, Averagemeasured 86.00 UG/L · limit 80.00 UG/LBack in compliance
  4. 2018-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 113.00 UG/L · limit 80.00 UG/LBack in compliance
  5. 2018-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 89.70 UG/L · limit 80.00 UG/LBack in compliance
  6. 2018-01-01Trihalomethanes (TTHM)MCL, Averagemeasured 87.73 UG/L · limit 80.00 UG/LBack in compliance
  7. 2017-10-01Trihalomethanes (TTHM)MCL, Averagemeasured 91.00 UG/L · limit 80.00 UG/LBack in compliance
  8. 2017-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 95.00 UG/L · limit 80.00 UG/LBack in compliance
  9. 2017-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 99.00 UG/L · limit 80.00 UG/LBack in compliance
  10. 2017-01-01Trihalomethanes (TTHM)MCL, Averagemeasured 111.00 UG/L · limit 80.00 UG/LBack in compliance
  11. 2016-10-09Public NoticePN Violation for NPDWR ViolationBack in compliance
  12. 2016-10-01Trihalomethanes (TTHM)MCL, Averagemeasured 111.00 UG/L · limit 80.00 UG/LBack in compliance
  13. 2016-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 111.00 UG/L · limit 80.00 UG/LBack in compliance
  14. 2016-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 84.00 UG/L · limit 80.00 UG/LBack in compliance
  15. 2006-07-01Consumer Confidence RuleCCR Inadequate ReportingBack in compliance
  16. 2003-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  17. 1994-07-01Lead and Copper RuleInitial Tap Sampling for Pb and CuBack in compliance

System details

Population served800
Service connections392
Water sourceGroundwater Purchased
System typeCommunity Water System
OwnerLocal Government
StatusActive
CityWaverly
EPA ZIP on file64096-0000

Areas served

  • Waverly, Lafayette County

Reading this record

Waverly Pws is a community water system that draws from groundwater purchased and serves about 800 people in Waverly, 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.