Transient Non-Community · PWSID WY5680212

Btnf-Blackrock Ranger Station

Serves 71 peopleGroundwaterOwner: FederalJackson, Wyoming
1 open treatment violation.

Open for: Groundwater Rule. 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 2017: 6 violations. 4 treatment lapses · 1 missed or late test · 1 notice or report. Most recent began 2025-05-07.

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
4Treatment lapse1 open
1Missed or late test
1Notice or report

More violations on record than 65% of active water systems in Wyoming. Small systems with no staff chemist often rack up missed-test violations; big utilities rarely do.

The record, year by year

2005201020152017 · Treatment lapse: 12017 · Notice or report: 12019 · Treatment lapse: 120202022 · Treatment lapse: 12024 · Missed or late test: 12025 · Treatment lapse: 12025
One square = one violation, by the year it began. Empty columns are years with nothing on EPA's record.
67% treatment lapse · 417% missed or late test · 117% notice or report · 1

Across Wyoming, 85% of violations are missed or late tests and 4% are water over a limit.

Open now (1)

  1. 2025-05-07Groundwater RuleFailure To Address DeficiencyOpen

Every violation on record

  1. 2025-05-07Groundwater RuleFailure To Address DeficiencyOpen
  2. 2024-11-08E. ColiMonitoring, Source Water (GWR)Back in compliance
  3. 2022-07-01Groundwater RuleFailure To Address DeficiencyBack in compliance
  4. 2019-09-24Revised Total Coliform RuleTTBack in compliance
  5. 2017-11-03Revised Total Coliform RuleOtherBack in compliance
  6. 2017-06-01Revised Total Coliform RuleTTBack in compliance

System details

Population served71
Service connections4
Water sourceGroundwater
System typeTransient Non-Community
OwnerFederal
StatusActive
CityJackson
EPA ZIP on file83001

Areas served

  • Moran JCT, Teton County

Reading this record

Btnf-Blackrock Ranger Station is a transient non-community that draws from groundwater and serves about 71 people in Jackson, Wyoming. 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.