Village of Mayville Drinking Water

“Do Not Drink” Advisory is Discontinued effective December 24, 2020

(MAYVILLE, NY)– The Do Not Drink Advisory for the Village of Mayville’s Public Water Supply is discontinued effective December 24, 2020. Your water is now acceptable for drinking, food preparation and all household uses.

Coordination between the Village of Mayville, Chautauqua County and the New York State Departments of Environmental Conservation and Health has ensured that a new water source for the Village, Well #4, is now online and providing clean water to Village residents. Water testing has confirmed Well #4 has no detectable levels of PFNA.

The village residents and water customers are commended  for their cooperation during this emergency.

Sampling results show levels of P­­FNA continue to go down in the Village water storage tank. Efforts are underway by the Village to flush the tank of old water and replace it with clean water from Well #4.  Additional engineering measures are being taken to maximize use of Well #4 to meet the needs of the Village and continue to lower levels in the storage tank.  As a result, the “do not drink” advisory is lifted effective December 24, 2020. The water system will continue to be monitored on a weekly basis and results will be made available to the public.

Sampling data from Monday, December 21 show PFNA levels ranged between non-detectable to 59.5 parts per trillion. Levels in the water system are continuing to go down by maximizing water delivery from Well #4.

The water supply was sampled again on Wednesday, December 23.  Repeat sampling will occur on Monday, December 28 and then a weekly schedule will ensue.  Results will be made available to the public.

If you haven’t run your household plumbing, please run water until it is cold before using it for drinking or food preparation.  For those who are interested, bottled water will be available on a limited basis and distribution will continue to be coordinated by the Village through January 4, 2021.

The New York State Department of Environmental Conservation (DEC) and New York State Department of Health (NYSDOH) will continue to investigate the source of contamination and how it can be remediated.  The results of the recent private well sampling should be available soon.

The “do not drink” advisory was issued on December 10th out of an abundance of caution after sample results received on December 9th for the Village of Mayville’s supply wells indicated high levels of the chemical perfluorononanoic acid (PFNA).


  • For information about drinking water and health effects contact NYS DOH Bureau of Toxic Substance Assessment at 518-402-7800.
  • For more information about drinking water quality contact NYS DOH Bureau of Water Supply Protection at 518 402-7650.
  • General information is available at  E-mail inquiries can be directed to
  • For questions, village water customers can contact: 716-269-4802.