Community Water System · PWSID CT0860051

Deer Run Supply

Serves 84 peopleGroundwaterOwner: PrivateNew York, New York
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 2003: 18 violations. 1 treatment lapse · 3 missed or late tests · 14 notices or reports. Most recent began 2024-10-17.

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
1Treatment lapse1 open
3Missed or late test
14Notice or report1 open

More violations on record than 80% of active water systems in New York. Small systems with no staff chemist often rack up missed-test violations; big utilities rarely do.

The record, year by year

2003 · Missed or late test: 12004 · Notice or report: 22004 · Notice or report: 220052006 · Notice or report: 22006 · Notice or report: 22007 · Notice or report: 120102011 · Missed or late test: 12012 · Notice or report: 32012 · Notice or report: 32012 · Notice or report: 320152016 · Missed or late test: 12017 · Notice or report: 22017 · Notice or report: 220202022 · Notice or report: 22022 · Notice or report: 22023 · Notice or report: 12024 · Treatment lapse: 12024 · Notice or report: 12025
One square = one violation, by the year it began. Empty columns are years with nothing on EPA's record.
6% treatment lapse · 117% missed or late test · 378% notice or report · 14

Across New York, 67% 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 4 results on file · action level 15 ppb

4.8 ppb
3 ppb
2.5 ppb
1.3 ppb

Open now (2)

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

Every violation on record

  1. 2024-10-17Lead service line inventoryRPTOpen
  2. 2024-10-17Lead service line inventoryTTOpen
  3. 2023-08-10Consumer Confidence RuleCCR Inadequate ReportingBack in compliance
  4. 2022-08-10Consumer Confidence RuleCCR Inadequate ReportingBack in compliance
  5. 2022-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  6. 2017-08-10Consumer Confidence RuleCCR Inadequate ReportingBack in compliance
  7. 2017-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  8. 2016-10-01Revised Total Coliform RuleMONBack in compliance
  9. 2012-08-10Consumer Confidence RuleCCR Inadequate ReportingBack in compliance
  10. 2012-07-21Public NoticePN Violation for NPDWR ViolationBack in compliance
  11. 2012-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  12. 2011-03-29E. ColiMonitoring, Source Water (GWR)Back in compliance
  13. 2007-08-10Consumer Confidence RuleCCR Inadequate ReportingBack in compliance
  14. 2006-08-10Consumer Confidence RuleCCR Inadequate ReportingBack in compliance
  15. 2006-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  16. 2004-08-10Consumer Confidence RuleCCR Inadequate ReportingBack in compliance
  17. 2004-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  18. 2003-10-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance

System details

Population served84
Service connections21
Water sourceGroundwater
System typeCommunity Water System
OwnerPrivate
StatusActive
CityNew York
EPA ZIP on file10012

Areas served

  • Montville, New London County

Reading this record

Deer Run Supply is a community water system that draws from groundwater and serves about 84 people in New York, New York. 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.