Community Water System · PWSID NE3120358

Guide Rock, Village of

Serves 225 peopleGroundwater PurchasedOwner: Local GovernmentGuide Rock, Nebraska
Nothing open right now.

On record since 1987: 5 violations. 2 over the limit · 3 missed or late tests. Most recent began 2015-06-01.

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
3Missed or late test
0Notice or report

More violations on record than 72% of active water systems in Nebraska. Small systems with no staff chemist often rack up missed-test violations; big utilities rarely do.

The record, year by year

1987 · Missed or late test: 119901994 · Missed or late test: 21994 · Missed or late test: 219952000200520102015 · Over the limit: 22015 · Over the limit: 2201520202025
One square = one violation, by the year it began. Empty columns are years with nothing on EPA's record.
40% over the limit · 260% missed or late test · 3

Across Nebraska, 48% of violations are missed or late tests and 29% 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 3 results on file · action level 15 ppb

8.7 ppb
3.1 ppb
2.9 ppb

Every violation on record

  1. 2015-06-01Coliform (TCR)MCL, Monthly (TCR)Back in compliance
  2. 2015-04-01Coliform (TCR)MCL, Monthly (TCR)Back in compliance
  3. 1994-07-01Lead and Copper RuleInitial Tap Sampling for Pb and CuBack in compliance
  4. 1994-01-01Lead and Copper RuleInitial Tap Sampling for Pb and CuBack in compliance
  5. 1987-09-01Coliform (Pre-TCR)Monitoring, Check/Repeat/ConfirmationBack in compliance

System details

Population served225
Service connections137
Water sourceGroundwater Purchased
System typeCommunity Water System
OwnerLocal Government
StatusActive
CityGuide Rock
EPA ZIP on file68942-0041

Areas served

  • Guide Rock, Webster County

Reading this record

Guide Rock, Village of is a community water system that draws from groundwater purchased and serves about 225 people in Guide Rock, Nebraska. 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.