Community Water System · PWSID CT1030021

South Norwalk Electric & Water

Serves 42,000 peopleSurface WaterOwner: Local GovernmentWilton, Connecticut
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On record since 2006: 10 violations. 3 treatment lapses · 7 notices or reports. Most recent began 2024-08-10.

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

0Over the limit
3Treatment lapse
0Missed or late test
7Notice or report

More violations on record than 69% 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: 22008 · Notice or report: 22009 · Notice or report: 22009 · Notice or report: 2201020152019 · Treatment lapse: 32019 · Treatment lapse: 32019 · Treatment lapse: 320202024 · Notice or report: 22024 · Notice or report: 22025
One square = one violation, by the year it began. Empty columns are years with nothing on EPA's record.
30% treatment lapse · 370% notice or report · 7

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 21 results on file · action level 15 ppb

32 ppb
32 ppb
3 ppb
3 ppb
2.3 ppb
2 ppb
2 ppb
0 ppb
0 ppb
0 ppb
0 ppb
0 ppb
0 ppb
0 ppb
0 ppb
0 ppb
0 ppb
0 ppb
0 ppb
0 ppb
0 ppb

Every violation on record

  1. 2024-08-10Consumer Confidence RuleCCR Inadequate ReportingBack in compliance
  2. 2024-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  3. 2019-01-01Carbon, Total ×3Treatment Technique Precursor RemovalPeriod ended · no return to compliance on file
  4. 2009-08-10Consumer Confidence RuleCCR Inadequate ReportingBack in compliance
  5. 2009-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  6. 2008-08-10Consumer Confidence RuleCCR Inadequate ReportingBack in compliance
  7. 2008-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  8. 2006-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance

System details

Population served42,000
Service connections9,682
Water sourceSurface Water
System typeCommunity Water System
OwnerLocal Government
StatusActive
CityWilton
EPA ZIP on file06897

Areas served

  • Fairfield County

Reading this record

South Norwalk Electric & Water is a community water system that draws from surface water and serves about 42,000 people in Wilton, 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.