Sampling of Private Water Wells in Mayville Area Completed

Submitted by gallagha on Mon, 01/04/2021 - 15:48


Perfluorononanoic Acid (PFNA) was NOT detected in any private wells


MAYVILLE, N.Y.:-- In response to the Village of Mayville’s drinking water emergency, the Chautauqua County Health Department, New York State Department of Health (NYSDOH), and New York State Department of Environmental Conservation (NYSDEC), teamed up to sample private drinking water wells within a one mile radius of the Village of Mayville’s contaminated wells.  This sampling was done to determine if these private wells were also contaminated with Perfluorononanoic Acid (PFNA).


Twenty-five private wells were sampled on December 19, 2020 and test results received on December 30 show that none of the six Per- and Polyfluoroalkyl Substances (PFAS) tested for were found at levels above the laboratory’s reporting limits.  This includes PFNA, the contaminant found in the Village of Mayville’s water wells, which sparked a “Do Not Drink” water advisory for Village customers earlier this month.


“These results are great news for everyone in the Mayville area who relies on private wells for drinking water,” said Christine Schuyler, County Public Health Director. “They show that private wells within one mile of the Village’s contaminated wells are PFAS-free, suggesting that private wells further out are also PFAS-free.”  


PFAS is a group of man-made chemicals found in a wide range of consumer products that people use daily such as cookware, pizza boxes and stain repellants among others. These chemicals are being scrutinized by health agencies in NYS and elsewhere because they may cause serious health problems. 


In 2020, the regulation of two of the chemicals in this group, PFOA and PFOS, began for public water supplies in NYS according to state established standards for the maximum amount allowable in drinking water. The U. S. Environmental Protection Agency (USEPA), New York and other states are beginning to take a closer look at other PFAS chemicals to determine if their levels should also be regulated in drinking water. 


The ”Do Not Drink” water advisory issued on December 10 for Village of Mayville water customers was lifted on December 24 after a new well was quickly brought on line to replace the contaminated wells and the Village’s water system was flushed out. Ongoing sampling in the public water system shows the water is safe to drink.



  • 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 chqgov.com.  E-mail inquiries can be directed to waterreports@co.chautauqua.ny.us
  • For questions of the Village of Mayville, residents may contact: 716-269-4801.  




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