# Jackson Wyoming water contamination incident

> Live situation record from CLSTR: https://clstr.news/situations/jackson-wyoming-water-contamination-incident
> Updated: 2026-09-26T14:50:10.000Z. Sources: 4. Developments: 2.

A boil water advisory was issued for the Town of Jackson, Wyoming, and surrounding water systems after the Environmental Protection Agency (EPA) detected E. coli in untreated water from a town well. The advisory led to the closure of Teton County schools on September 25 due to concerns regarding food services and transportation.

The advisory was lifted after water system tests returned clean results for two consecutive days. Although the order is no longer in effect, the Teton County Health Department has recommended that residents flush cold water lines, run empty dishwasher cycles, and discard ice made during the advisory period. No illnesses have been reported, and the Town of Jackson intends to work with the EPA on corrective actions to prevent future contamination.

## Timeline

### 2026-09-26: Jackson, Wyoming lifts boil water advisory after clean test results

The Town of Jackson, Wyoming, has lifted its boil water advisory after water tests confirmed the absence of E. coli. Residents are advised to flush taps and discard old ice as a precaution.

2 sources. https://clstr.news/cluster/jackson-wyoming-lifts-boil-water-advisory-after-clean-test-results

### 2026-09-24: Teton County schools close due to Jackson boil water advisory

Teton County schools are closed for September 25 following a boil water advisory issued for the Town of Jackson and its connected water systems.

3 sources. https://clstr.news/cluster/teton-county-schools-close-due-to-jackson-boil-water-advisory

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Cite as: Jackson Wyoming water contamination incident. CLSTR, https://clstr.news/situations/jackson-wyoming-water-contamination-incident