Non-Transient Non-Community · PWSID CT0309073

Columbia Manufacturing - Well #2

Serves 155 peopleGroundwaterOwner: PrivateColumbia, Connecticut

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 2000: 179 violations. 2 treatment lapses · 176 missed or late tests · 1 notice or report. 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

176Missed or late test

1Notice or report1 open

More violations on record than 98% 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

One square ≈ 5 violations (rounded up), by the year they began. Empty columns are years with nothing on EPA's record.

1% treatment lapse · 298% missed or late test · 176<1% notice or report · 1

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 18 results on file · action level 15 ppb

43.9 ppb

36.8 ppb

23 ppb

12.8 ppb

11.9 ppb

11.5 ppb

11.1 ppb

10 ppb

9.1 ppb

8.3 ppb

6.7 ppb

5.5 ppb

4.8 ppb

4 ppb

0 ppb

Open now (2)

2024-10-17Lead service line inventoryRPTOpen
2024-10-17Lead service line inventoryTTOpen

Every violation on record

2024-10-17Lead service line inventoryRPTOpen
2024-10-17Lead service line inventoryTTOpen
2024-03-31Lead and Copper RuleLead Consumer NoticeBack in compliance
2023-04-01Revised Total Coliform RuleMONBack in compliance
2023-04-01Lead and Copper RuleLead Consumer NoticeBack in compliance
2022-10-01Revised Total Coliform RuleMONBack in compliance
2022-07-01Lead and Copper RuleInitial, Follow-up, or Routine Source Water M/RBack in compliance
2022-04-01Lead and Copper RuleLead Consumer NoticeBack in compliance
2022-01-01NitriteMonitoring, RegularBack in compliance
2022-01-01NitrateMonitoring, RegularBack in compliance
2022-01-01n-PropylbenzeneMonitoring, RegularBack in compliance
2022-01-01o-XyleneMonitoring, RegularBack in compliance
2022-01-01StyreneMonitoring, RegularBack in compliance
2022-01-01m-XyleneMonitoring, RegularBack in compliance
2022-01-01BromobenzeneMonitoring, RegularBack in compliance
2022-01-01EthylbenzeneMonitoring, RegularBack in compliance
2022-01-01TolueneMonitoring, RegularBack in compliance
2022-01-01BenzeneMonitoring, RegularBack in compliance
2022-01-01ChlorobenzeneMonitoring, RegularBack in compliance
2022-01-011,1,2,2-TetrachloroethaneMonitoring, RegularBack in compliance
2022-01-01TetrachloroethyleneMonitoring, RegularBack in compliance
2022-01-011,1,1,2-TetrachloroethaneMonitoring, RegularBack in compliance
2022-01-011,1,2-TrichloroethaneMonitoring, RegularBack in compliance
2022-01-01TrichloroethyleneMonitoring, RegularBack in compliance
2022-01-011,2-DichloropropaneMonitoring, RegularBack in compliance

Show the other 152 entries

2022-01-01Carbon tetrachlorideMonitoring, RegularBack in compliance
2022-01-011,1,1-TrichloroethaneMonitoring, RegularBack in compliance
2022-01-011,2-DichloroethaneMonitoring, RegularBack in compliance
2022-01-01trans-1,2-DichloroethyleneMonitoring, RegularBack in compliance
2022-01-011,1-DichloroethaneMonitoring, RegularBack in compliance
2022-01-011,1-DichloroethyleneMonitoring, RegularBack in compliance
2022-01-01Vinyl chlorideMonitoring, RegularBack in compliance
2022-01-01p-DichlorobenzeneMonitoring, RegularBack in compliance
2022-01-01o-DichlorobenzeneMonitoring, RegularBack in compliance
2022-01-01m-DichlorobenzeneMonitoring, RegularBack in compliance
2022-01-01p-ChlorotolueneMonitoring, RegularBack in compliance
2022-01-01o-ChlorotolueneMonitoring, RegularBack in compliance
2022-01-01DichloromethaneMonitoring, RegularBack in compliance
2022-01-01p-XyleneMonitoring, RegularBack in compliance
2022-01-01DibromochloromethaneMonitoring, RegularBack in compliance
2022-01-01BromodichloromethaneMonitoring, RegularBack in compliance
2022-01-01BromoformMonitoring, RegularBack in compliance
2022-01-01ChloroformMonitoring, RegularBack in compliance
2022-01-011,3,5-TrimethylbenzeneMonitoring, RegularBack in compliance
2022-01-01n-ButylbenzeneMonitoring, RegularBack in compliance
2022-01-011,2,4-TrimethylbenzeneMonitoring, RegularBack in compliance
2022-01-012,2-DichloropropaneMonitoring, RegularBack in compliance
2022-01-011,2,3-TrichloropropaneMonitoring, RegularBack in compliance
2022-01-011, 3-DichloropropeneMonitoring, RegularBack in compliance
2022-01-011,3-DichloropropaneMonitoring, RegularBack in compliance
2022-01-011,1-DichloropropeneMonitoring, RegularBack in compliance
2022-01-01DibromomethaneMonitoring, RegularBack in compliance
2022-01-01cis-1,2-DichloroethyleneMonitoring, RegularBack in compliance
2022-01-011,2,4-TrichlorobenzeneMonitoring, RegularBack in compliance
2022-01-01Methyl Tert-Butyl EtherMonitoring, RegularBack in compliance
2022-01-01NaphthaleneMonitoring, RegularBack in compliance
2022-01-01ChloroethaneMonitoring, RegularBack in compliance
2022-01-01BromomethaneMonitoring, RegularBack in compliance
2022-01-01ChloromethaneMonitoring, RegularBack in compliance
2022-01-01Conductivity @ 25 C Umhos/Cm ×2Water Quality Parameter M/RBack in compliance
2022-01-01Calcium ×2Water Quality Parameter M/RBack in compliance
2022-01-01pHWater Quality Parameter M/RBack in compliance
2022-01-01Temperature (Centigrade)Water Quality Parameter M/RBack in compliance
2021-09-29Lead and Copper RuleLead Consumer NoticeBack in compliance
2021-04-01Lead and Copper RuleLead Consumer NoticeBack in compliance
2021-01-01Revised Total Coliform RuleMONBack in compliance
2020-09-29Lead and Copper RuleLead Consumer NoticeBack in compliance
2020-03-31Lead and Copper RuleLead Consumer NoticeBack in compliance
2020-01-01n-PropylbenzeneMonitoring, RegularBack in compliance
2020-01-01o-XyleneMonitoring, RegularBack in compliance
2020-01-01StyreneMonitoring, RegularBack in compliance
2020-01-01m-XyleneMonitoring, RegularBack in compliance
2020-01-01BromobenzeneMonitoring, RegularBack in compliance
2020-01-01EthylbenzeneMonitoring, RegularBack in compliance
2020-01-01TolueneMonitoring, RegularBack in compliance
2020-01-01BenzeneMonitoring, RegularBack in compliance
2020-01-01ChlorobenzeneMonitoring, RegularBack in compliance
2020-01-011,1,2,2-TetrachloroethaneMonitoring, RegularBack in compliance
2020-01-01TetrachloroethyleneMonitoring, RegularBack in compliance
2020-01-011,1,1,2-TetrachloroethaneMonitoring, RegularBack in compliance
2020-01-011,1,2-TrichloroethaneMonitoring, RegularBack in compliance
2020-01-01TrichloroethyleneMonitoring, RegularBack in compliance
2020-01-011,2-DichloropropaneMonitoring, RegularBack in compliance
2020-01-01Carbon tetrachlorideMonitoring, RegularBack in compliance
2020-01-011,1,1-TrichloroethaneMonitoring, RegularBack in compliance
2020-01-011,2-DichloroethaneMonitoring, RegularBack in compliance
2020-01-01trans-1,2-DichloroethyleneMonitoring, RegularBack in compliance
2020-01-011,1-DichloroethaneMonitoring, RegularBack in compliance
2020-01-011,1-DichloroethyleneMonitoring, RegularBack in compliance
2020-01-01Vinyl chlorideMonitoring, RegularBack in compliance
2020-01-01p-DichlorobenzeneMonitoring, RegularBack in compliance
2020-01-01o-DichlorobenzeneMonitoring, RegularBack in compliance
2020-01-01m-DichlorobenzeneMonitoring, RegularBack in compliance
2020-01-01p-ChlorotolueneMonitoring, RegularBack in compliance
2020-01-01o-ChlorotolueneMonitoring, RegularBack in compliance
2020-01-01DichloromethaneMonitoring, RegularBack in compliance
2020-01-01p-XyleneMonitoring, RegularBack in compliance
2020-01-01DibromochloromethaneMonitoring, RegularBack in compliance
2020-01-01BromodichloromethaneMonitoring, RegularBack in compliance
2020-01-01BromoformMonitoring, RegularBack in compliance
2020-01-01ChloroformMonitoring, RegularBack in compliance
2020-01-011,3,5-TrimethylbenzeneMonitoring, RegularBack in compliance
2020-01-01n-ButylbenzeneMonitoring, RegularBack in compliance
2020-01-011,2,4-TrimethylbenzeneMonitoring, RegularBack in compliance
2020-01-012,2-DichloropropaneMonitoring, RegularBack in compliance
2020-01-011,2,3-TrichloropropaneMonitoring, RegularBack in compliance
2020-01-011, 3-DichloropropeneMonitoring, RegularBack in compliance
2020-01-011,3-DichloropropaneMonitoring, RegularBack in compliance
2020-01-011,1-DichloropropeneMonitoring, RegularBack in compliance
2020-01-01DibromomethaneMonitoring, RegularBack in compliance
2020-01-01cis-1,2-DichloroethyleneMonitoring, RegularBack in compliance
2020-01-011,2,4-TrichlorobenzeneMonitoring, RegularBack in compliance
2020-01-01Methyl Tert-Butyl EtherMonitoring, RegularBack in compliance
2020-01-01NaphthaleneMonitoring, RegularBack in compliance
2020-01-01ChloroethaneMonitoring, RegularBack in compliance
2020-01-01BromomethaneMonitoring, RegularBack in compliance
2020-01-01ChloromethaneMonitoring, RegularBack in compliance
2020-01-01NitriteMonitoring, RegularBack in compliance
2020-01-01NitrateMonitoring, RegularBack in compliance
2019-04-01Lead and Copper RuleLead Consumer NoticeBack in compliance
2018-09-29Lead and Copper RuleLead Consumer NoticeBack in compliance
2018-01-01NitriteMonitoring, RegularBack in compliance
2018-01-01NitrateMonitoring, RegularBack in compliance
2018-01-01n-PropylbenzeneMonitoring, RegularBack in compliance
2018-01-01o-XyleneMonitoring, RegularBack in compliance
2018-01-01StyreneMonitoring, RegularBack in compliance
2018-01-01m-XyleneMonitoring, RegularBack in compliance
2018-01-01BromobenzeneMonitoring, RegularBack in compliance
2018-01-01EthylbenzeneMonitoring, RegularBack in compliance
2018-01-01TolueneMonitoring, RegularBack in compliance
2018-01-01BenzeneMonitoring, RegularBack in compliance
2018-01-01ChlorobenzeneMonitoring, RegularBack in compliance
2018-01-011,1,2,2-TetrachloroethaneMonitoring, RegularBack in compliance
2018-01-01TetrachloroethyleneMonitoring, RegularBack in compliance
2018-01-011,1,1,2-TetrachloroethaneMonitoring, RegularBack in compliance
2018-01-011,1,2-TrichloroethaneMonitoring, RegularBack in compliance
2018-01-01TrichloroethyleneMonitoring, RegularBack in compliance
2018-01-011,2-DichloropropaneMonitoring, RegularBack in compliance
2018-01-01Carbon tetrachlorideMonitoring, RegularBack in compliance
2018-01-011,1,1-TrichloroethaneMonitoring, RegularBack in compliance
2018-01-011,2-DichloroethaneMonitoring, RegularBack in compliance
2018-01-01trans-1,2-DichloroethyleneMonitoring, RegularBack in compliance
2018-01-011,1-DichloroethaneMonitoring, RegularBack in compliance
2018-01-011,1-DichloroethyleneMonitoring, RegularBack in compliance
2018-01-01Vinyl chlorideMonitoring, RegularBack in compliance
2018-01-01p-DichlorobenzeneMonitoring, RegularBack in compliance
2018-01-01o-DichlorobenzeneMonitoring, RegularBack in compliance
2018-01-01m-DichlorobenzeneMonitoring, RegularBack in compliance
2018-01-01p-ChlorotolueneMonitoring, RegularBack in compliance
2018-01-01o-ChlorotolueneMonitoring, RegularBack in compliance
2018-01-01DichloromethaneMonitoring, RegularBack in compliance
2018-01-01p-XyleneMonitoring, RegularBack in compliance
2018-01-01DibromochloromethaneMonitoring, RegularBack in compliance
2018-01-01BromodichloromethaneMonitoring, RegularBack in compliance
2018-01-01BromoformMonitoring, RegularBack in compliance
2018-01-01ChloroformMonitoring, RegularBack in compliance
2018-01-011,3,5-TrimethylbenzeneMonitoring, RegularBack in compliance
2018-01-01n-ButylbenzeneMonitoring, RegularBack in compliance
2018-01-011,2,4-TrimethylbenzeneMonitoring, RegularBack in compliance
2018-01-012,2-DichloropropaneMonitoring, RegularBack in compliance
2018-01-011,2,3-TrichloropropaneMonitoring, RegularBack in compliance
2018-01-011, 3-DichloropropeneMonitoring, RegularBack in compliance
2018-01-011,3-DichloropropaneMonitoring, RegularBack in compliance
2018-01-011,1-DichloropropeneMonitoring, RegularBack in compliance
2018-01-01DibromomethaneMonitoring, RegularBack in compliance
2018-01-01cis-1,2-DichloroethyleneMonitoring, RegularBack in compliance
2018-01-011,2,4-TrichlorobenzeneMonitoring, RegularBack in compliance
2018-01-01Methyl Tert-Butyl EtherMonitoring, RegularBack in compliance
2018-01-01NaphthaleneMonitoring, RegularBack in compliance
2018-01-01ChloroethaneMonitoring, RegularBack in compliance
2018-01-01BromomethaneMonitoring, RegularBack in compliance
2018-01-01ChloromethaneMonitoring, RegularBack in compliance
2016-01-01Lead and Copper RuleWater Quality Parameter M/RBack in compliance
2015-12-30Lead and Copper RuleLead Consumer NoticeBack in compliance
2003-07-01Lead and Copper RuleOCCT/SOWT Study/RecommendationBack in compliance
2003-01-01Lead and Copper RuleInitial, Follow-up, or Routine Source Water M/RBack in compliance
2000-07-01Lead and Copper RuleInitial Tap Sampling for Pb and CuBack in compliance

System details

Population served	155
Service connections	1
Water source	Groundwater
System type	Non-Transient Non-Community
Owner	Private
Status	Active
City	Columbia
EPA ZIP on file	06237

Areas served

Columbia, Tolland County

Reading this record

Columbia Manufacturing - Well #2 is a non-transient non-community that draws from groundwater and serves about 155 people in Columbia, 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.