Community Water System · PWSID IL1635050

Mound Pwd

Serves 1,500 peopleGroundwaterOwner: Local GovernmentCollinsville, Illinois
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 1995: 16 violations. 2 treatment lapses · 6 missed or late tests · 8 notices or reports. Most recent began 2025-08-22.

None of them is a measurement of contaminated water.

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

0Over the limit
2Treatment lapse1 open
6Missed or late test2 open
8Notice or report4 open

More violations on record than 88% of active water systems in Illinois. 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: 119952000200520102012 · Treatment lapse: 12012 · Missed or late test: 12012 · Notice or report: 120152019 · Notice or report: 120202023 · Missed or late test: 22023 · Missed or late test: 22023 · Notice or report: 12024 · Treatment lapse: 12024 · Missed or late test: 12024 · Notice or report: 12025 · Missed or late test: 12025 · Notice or report: 42025 · Notice or report: 42025 · Notice or report: 42025 · Notice or report: 42025
One square = one violation, by the year it began. Empty columns are years with nothing on EPA's record.
13% treatment lapse · 238% missed or late test · 650% notice or report · 8

Across Illinois, 81% of violations are missed or late tests and 3% are water over a limit.

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 2 results on file · action level 15 ppb

0 ppb
0 ppb

Open now (7)

  1. 2025-08-22Public NoticePN Violation for NPDWR ViolationOpen
  2. 2025-07-02Lead service line inventoryRPTOpen
  3. 2025-07-01Consumer Confidence RuleCCR Inadequate ReportingOpen
  4. 2025-07-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/ROpen
  5. 2024-10-17Lead service line inventoryRPTOpen
  6. 2024-10-17Lead service line inventoryTTOpen
  7. 2024-10-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/ROpen

Every violation on record

  1. 2025-08-22Public NoticePN Violation for NPDWR ViolationOpen
  2. 2025-07-02Lead service line inventoryRPTOpen
  3. 2025-07-01Consumer Confidence RuleCCR Inadequate ReportingOpen
  4. 2025-07-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/ROpen
  5. 2025-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  6. 2024-10-17Lead service line inventoryRPTOpen
  7. 2024-10-17Lead service line inventoryTTOpen
  8. 2024-10-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/ROpen
  9. 2023-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  10. 2023-06-01Revised Total Coliform RuleMONBack in compliance
  11. 2023-04-01ChloramineMonitoring and Reporting (DBP)Back in compliance
  12. 2019-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  13. 2012-05-04Public NoticePN Violation for NPDWR ViolationBack in compliance
  14. 2012-04-01Lead and Copper RuleOCCT/SOWT Study/RecommendationBack in compliance
  15. 2012-01-02Lead and Copper RuleLead Consumer NoticeBack in compliance
  16. 1995-10-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance

System details

Population served1,500
Service connections543
Water sourceGroundwater
System typeCommunity Water System
OwnerLocal Government
StatusActive
CityCollinsville
EPA ZIP on file62234

Areas served

  • St. Clair County

Reading this record

Mound Pwd is a community water system that draws from groundwater and serves about 1,500 people in Collinsville, Illinois. 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.