Non-Transient Non-Community · PWSID CT0040483

Talcott Mountain Science Center #2

Serves 59 peopleGroundwaterOwner: PrivateAvon, ConnecticutServes a school or daycare
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 2006: 27 violations. 2 treatment lapses · 16 missed or late tests · 9 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
2Treatment lapse1 open
16Missed or late test
9Notice or report2 open

More violations on record than 86% of active water systems in Connecticut. Small systems with no staff chemist often rack up missed-test violations; big utilities rarely do.

The record, year by year

20052006 · Notice or report: 12008 · Notice or report: 12010 · Notice or report: 120102011 · Missed or late test: 12012 · Notice or report: 12015 · Missed or late test: 22015 · Missed or late test: 220152016 · Notice or report: 12017 · Missed or late test: 22017 · Missed or late test: 22018 · Missed or late test: 32018 · Missed or late test: 32018 · Missed or late test: 32019 · Missed or late test: 22019 · Missed or late test: 22019 · Notice or report: 12020 · Missed or late test: 42020 · Missed or late test: 42020 · Missed or late test: 42020 · Missed or late test: 42020 · Notice or report: 120202021 · Notice or report: 22021 · Notice or report: 22022 · Treatment lapse: 12024 · Treatment lapse: 12024 · Missed or late test: 22024 · Missed or late test: 22025
One square = one violation, by the year it began. Empty columns are years with nothing on EPA's record.
7% treatment lapse · 259% missed or late test · 1633% notice or report · 9

Across Connecticut, 76% of violations are missed or late tests and 1% 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

4.6 ppb
2.3 ppb
1.9 ppb
0.6 ppb

Open now (3)

  1. 2024-10-17Lead service line inventoryTTOpen
  2. 2008-10-01Public NoticePN Violation for NPDWR ViolationOpen
  3. 2006-05-03Public NoticePN Violation for NPDWR ViolationOpen

Every violation on record

  1. 2024-10-17Lead service line inventoryTTOpen
  2. 2024-01-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Period ended · no return to compliance on file
  3. 2024-01-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Period ended · no return to compliance on file
  4. 2022-08-01Groundwater RuleTreatment Technique (SWTR and GWR)Back in compliance
  5. 2021-08-27Public NoticePN Violation without NPDWR ViolationBack in compliance
  6. 2021-06-04Public NoticePN Violation for NPDWR ViolationBack in compliance
  7. 2020-10-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  8. 2020-07-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  9. 2020-04-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  10. 2020-02-14Public NoticePN Violation for NPDWR ViolationBack in compliance
  11. 2020-01-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  12. 2019-11-21Public NoticePN Violation for NPDWR ViolationBack in compliance
  13. 2019-07-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  14. 2019-07-01Di(2-ethylhexyl) phthalateMonitoring, RegularBack in compliance
  15. 2018-10-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  16. 2018-10-01E. ColiFailure to Conduct Assessment MonitoringBack in compliance
  17. 2018-07-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  18. 2017-01-01NitriteMonitoring, RegularBack in compliance
  19. 2017-01-01E. ColiFailure to Conduct Assessment MonitoringBack in compliance
  20. 2016-12-11Public NoticePN Violation for NPDWR ViolationBack in compliance
  21. 2015-01-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Back in compliance
  22. 2015-01-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Back in compliance
  23. 2012-04-21Public NoticePN Violation for NPDWR ViolationBack in compliance
  24. 2011-09-20E. ColiMonitoring, Source Water (GWR)Back in compliance
  25. 2010-02-28Public NoticePN Violation for NPDWR ViolationBack in compliance
Show the other 2 entries
  1. 2008-10-01Public NoticePN Violation for NPDWR ViolationOpen
  2. 2006-05-03Public NoticePN Violation for NPDWR ViolationOpen

System details

Population served59
Service connections1
Water sourceGroundwater
System typeNon-Transient Non-Community
OwnerPrivate
StatusActive
CityAvon
EPA ZIP on file06001

Areas served

  • Avon, Hartford County

Reading this record

Talcott Mountain Science Center #2 is a non-transient non-community that draws from groundwater and serves about 59 people in Avon, Connecticut. 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.