Perfluorooctanoic Acid (PFOA) & Perfluorooctane Sulfonic Acid (PFOS) Information

During 2021, water systems that serve less than 3,300 people have been regulated to begin sampling their source water (all registered wells) for PFOA/PFOS and 1,4-dioxane.

The following various links are for associated notices and reports related to the respective water district under the heading row:

DateNorth Castle Water District Number 2 (Windmill Farm)




May 16, 2024Q3 '23 & Q1 '24 MCL Notice (PDF)
August 21, 2023Q2 2023 WD2 MCL Notice (PDF)
May 10, 2023Q1 2023 WD2 MCL Notice (PDF)
February 24, 2023Q4 2022 WD2 MCL Notice (PDF)
December 14, 2022Langan Contract Amendment for Full Design (PDF)
December 7, 2022Q3 2022 WD2 MCL Notice (PDF)
November 1, 2022Health Department Follow up on Langan Tech Report (PDF)
October 24, 2022Q2 2022 WD2 MCL Notice (PDF)
July 7, 2022Q1 2022 WD2 MCL Notice (PDF)
May 6, 2022Q4 2021 WD2 MCL Notice (PDF)
March 2, 2022Langan Tech Report to Health Department (PDF)
February 8, 2022Q3 2021 WD2 Well 5 Notice (PDF)
November 30, 20212nd MCL Q3 2021 WD2 Notice (PDF)
October 27, 2021Town Board Action/Langan Engineering (PDF)
October 25, 20211st MCL WD2 Notice (PDF)


DateNorth Castle Water District Number 4


May 16, 2024Q1 '24 WD4 MCL Notice (PDF)
August 21, 2023Q2 2023 WD4 MCL Notice (PDF)
May 10, 2023Q1 2023 WD4 MCL Notice (PDF)
February 24, 2023Q4 2022 WD4 MCL Notice (PDF)
December 7, 2022Q3 2022 WD4 MCL Notice (PDF)
November 9, 2022WSP Design Proposal for Town Board Approval (PDF)
October 4, 2022Health Department Follow up on WSP Tech Report (PDF)
October 24, 2022Q2 2022 WD4 MCL Notice (PDF)
July 7, 2022Q1 2022 WD4 MCL Notice (PDF)
May 6, 2022Q4 2021 WD4 MCL Notice (PDF)
April 26, 2022WSP Tech Report for Health Department (PDF)
December 8, 2021Town Board Action/WSP Engineering (PDF)
November 30, 20211st MCL WD4 Notice (PDF)


If you have additional questions about these contaminants and your health, talk to your health care provider who is most familiar with your health history and can provide advice and assistance about understanding how drinking water may affect your personal health.