Community Water System · PWSID TX1500121

Deer Country Wsc

Serves 72 peopleGroundwaterOwner: PrivateDes Peres, Missouri
1 open treatment violation.

Open for: Lead service line inventory. EPA counts treatment-technique violations as health-based: a required protective step was not done. It is not a measurement of contamination.

On record since 2012: 15 violations. 5 over the limit · 1 treatment lapse · 5 missed or late tests · 4 notices or reports. Most recent began 2025-05-01.

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

5Over the limit
1Treatment lapse1 open
5Missed or late test
4Notice or report1 open

More violations on record than 83% 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

200520102012 · Missed or late test: 12013 · Missed or late test: 120152017 · Over the limit: 42017 · Over the limit: 42017 · Over the limit: 42017 · Over the limit: 42017 · Missed or late test: 12018 · Over the limit: 12018 · Notice or report: 22018 · Notice or report: 22020 · Missed or late test: 120202021 · Missed or late test: 12024 · Treatment lapse: 12024 · Notice or report: 12025 · Notice or report: 12025
One square = one violation, by the year it began. Empty columns are years with nothing on EPA's record.
33% over the limit · 57% treatment lapse · 133% missed or late test · 527% notice or report · 4

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×+Gross Alpha, Excl. Radon and U2018-01-01 · Gross Alpha, Excl. Radon and U: measured 16.00 PCI/L vs limit 15.00 PCI/L (1.1×)2017-10-01 · Gross Alpha, Excl. Radon and U: measured 19.00 PCI/L vs limit 15.00 PCI/L (1.3×)2017-07-01 · Gross Alpha, Excl. Radon and U: measured 25.00 PCI/L vs limit 15.00 PCI/L (1.7×)2017-04-01 · Gross Alpha, Excl. Radon and U: measured 20.00 PCI/L vs limit 15.00 PCI/L (1.3×)2017-01-01 · Gross Alpha, Excl. Radon and U: measured 21.00 PCI/L vs limit 15.00 PCI/L (1.4×)
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 1 result on file · action level 15 ppb

0 ppb

Open now (2)

  1. 2024-10-17Lead service line inventoryRPTOpen
  2. 2024-10-17Lead service line inventoryTTOpen

Every violation on record

  1. 2025-05-01Public NoticePN Violation for NPDWR ViolationBack in compliance
  2. 2024-10-17Lead service line inventoryRPTOpen
  3. 2024-10-17Lead service line inventoryTTOpen
  4. 2021-01-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  5. 2020-10-01Revised Total Coliform RuleMONBack in compliance
  6. 2018-09-21Public NoticePN Violation for NPDWR ViolationBack in compliance
  7. 2018-02-09Public NoticePN Violation for NPDWR ViolationBack in compliance
  8. 2018-01-01Gross Alpha, Excl. Radon and UMCL, Averagemeasured 16.00 PCI/L · limit 15.00 PCI/LBack in compliance
  9. 2017-10-01Gross Alpha, Excl. Radon and UMCL, Averagemeasured 19.00 PCI/L · limit 15.00 PCI/LBack in compliance
  10. 2017-07-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  11. 2017-07-01Gross Alpha, Excl. Radon and UMCL, Averagemeasured 25.00 PCI/L · limit 15.00 PCI/LBack in compliance
  12. 2017-04-01Gross Alpha, Excl. Radon and UMCL, Averagemeasured 20.00 PCI/L · limit 15.00 PCI/LBack in compliance
  13. 2017-01-01Gross Alpha, Excl. Radon and UMCL, Averagemeasured 21.00 PCI/L · limit 15.00 PCI/LBack in compliance
  14. 2013-10-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  15. 2012-10-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance

System details

Population served72
Service connections24
Water sourceGroundwater
System typeCommunity Water System
OwnerPrivate
StatusActive
CityDes Peres
EPA ZIP on file63131-1871

Areas served

  • Llano County

Reading this record

Deer Country Wsc is a community water system that draws from groundwater and serves about 72 people in Des Peres, 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.