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Tupper Lake: Water tainted by elevated HAA5 levels

Current status: Lifted (as of 23/09/2026, 20:06). Older update notes in the history text may be outdated.

In Tupper Lake, New York, the public water system serving about 3,300 people has water contaminated with elevated levels of HAA5 (haloacetic acids), exceeding state limits. An analysis of 2024 state data found an average of 63.1 micrograms per liter, with Q4 2025 levels at 92.8 µg/L, while the limit is 60 µg/L. These disinfectant byproducts pose a long-term cancer risk, leading residents to use bottled water and filters as the issue persists for many years. Update (Emerald Coast Utilities Authority (ECUA), 16.09.2026, 15:20): The Emerald Coast Utilities Authority issued a precautionary boil water notice for 4501 Whisper Way in Pensacola, Florida. It advises residents to boil all water for drinking, cooking, and ice-making due to a potential contamination risk, remaining in effect until further notice. All-clear (Copper Country News, 16.09.2026, 15:41): A boil water advisory was issued for Miami, Claypool, and parts of Globe, Arizona, from September 11 to 13, 2026, due to E. coli detection in a water well. The advisory was lifted after follow-up samples tested negative, confirming the water was safe to drink. Update (Esquire, 23.09.2026, 20:06): The contamination now includes 1,4-dioxane and PFAS exceeding state limits. This issue affects Tupper Lake and 79 other public water systems statewide.

Location

Tupper Lake, Franklin County

Country

🇺🇸 USA

Start

Unknown

End

13/09/2026, 02:00

Event type

Chemical contamination, Limit exceeded, Boil water advisory, Microbiological

Status

Lifted

Region

Franklin County

Last updated

23/09/2026, 20:06