Community Water System · PWSID NH0142010

Locke Lake

Serves 2,278 peopleSurface WaterOwner: PrivateNashua, New Hampshire
Nothing open right now.

On record since 2012: 3 violations. 2 over the limit · 1 missed or late test. Most recent began 2018-04-01.

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

2Over the limit
0Treatment lapse
1Missed or late test
0Notice or report

More violations on record than 48% of active water systems in New Hampshire. Small systems with no staff chemist often rack up missed-test violations; big utilities rarely do.

The record, year by year

200520102012 · Missed or late test: 120152018 · Over the limit: 22018 · Over the limit: 220202025
One square = one violation, by the year it began. Empty columns are years with nothing on EPA's record.
67% over the limit · 233% missed or late test · 1

Across New Hampshire, 37% of violations are missed or late tests and 7% are water over a limit.

Every violation on record

  1. 2018-04-01ArsenicMCL, Averagemeasured 0.0110 MG/LBack in compliance
  2. 2018-01-01ArsenicMCL, Averagemeasured 0.0110 MG/LBack in compliance
  3. 2012-08-08E. ColiMonitoring, Source Water (GWR)Back in compliance

System details

Population served2,278
Service connections911
Water sourceSurface Water
System typeCommunity Water System
OwnerPrivate
StatusActive
CityNashua
EPA ZIP on file03064

Areas served

  • Barnstead, Belknap County

Reading this record

Locke Lake is a community water system that draws from surface water and serves about 2,278 people in Nashua, New Hampshire. 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.