West Nyack tap water, in plain English

• Health-based PERFLUOROCTANOIC ACID (PFOA): a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded 14 times between October 2023 and July 2025. The EPA record lists a level of 10.1 NG/L; the limit (MCL) is 10 NG/L. EPA records do not show all of these as returned to compliance.
• Health-based PERFLUOROCTANE SULFONIC ACID (PFOS): a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded 2 times in July 2025. The EPA record lists a level of 15.5 NG/L; the limit (MCL) is 10 NG/L. EPA records do not show all of these as returned to compliance.
• Health-based Iron: a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded 2 times in January 2022. The EPA record for these does not include a measured level. EPA records do not show all of these as returned to compliance.
• Health-based contaminant code null: a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded 9 times in January 2016. The EPA record for these does not include a measured level. All have since returned to compliance, per EPA records.
• Health-based TTHM: a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded once in January 2016. The EPA record for these does not include a measured level. EPA records do not show all of these as returned to compliance.
• Monitoring contaminant code null: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 9 times in January 2016. All have since returned to compliance, per EPA records.

• Health-based Long Term 2 Enhanced Surface Water Treatment Rule: a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded once in May 2015. The EPA record for these does not include a measured level. All have since returned to compliance, per EPA records.
• Health-based Surface Water Treatment Rule: a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded once in February 2003. The EPA record for these does not include a measured level. All have since returned to compliance, per EPA records.
• Monitoring TTHM: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 6 times in October 2023. EPA records do not show all of these as returned to compliance.
• Monitoring Total Haloacetic Acids (HAA5): a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 6 times in October 2023. EPA records do not show all of these as returned to compliance.

• Monitoring TTHM: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 5 times in October 2023. EPA records do not show all of these as returned to compliance.
• Monitoring Total Haloacetic Acids (HAA5): a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 5 times in October 2023. EPA records do not show all of these as returned to compliance.

• Health-based PERFLUOROCTANOIC ACID (PFOA): a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded 5 times between October 2023 and October 2025. The EPA record lists a level of 10.45 NG/L; the limit (MCL) is 10 NG/L. EPA records do not show all of these as returned to compliance.
• Monitoring Groundwater Rule: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 5 times in July 2024. EPA records do not show all of these as returned to compliance.
• Monitoring TTHM: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 4 times in January 2022. EPA records do not show all of these as returned to compliance.
• Monitoring Total Haloacetic Acids (HAA5): a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 4 times in January 2022. EPA records do not show all of these as returned to compliance.
• Monitoring Revised Total Coliform Rule: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 8 times between November 2016 and January 2020. EPA records do not show all of these as returned to compliance.
• Monitoring Endrin: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 6 times between October 2015 and April 2017. All have since returned to compliance, per EPA records.
• Monitoring BHC-GAMMA: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 6 times between October 2015 and April 2017. All have since returned to compliance, per EPA records.
• Monitoring Methoxychlor: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 6 times between October 2015 and April 2017. All have since returned to compliance, per EPA records.
• Monitoring Toxaphene: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 6 times between October 2015 and April 2017. All have since returned to compliance, per EPA records.
• Monitoring Carbaryl: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 6 times between October 2015 and April 2017. All have since returned to compliance, per EPA records.
• Monitoring Methomyl: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 6 times between October 2015 and April 2017. All have since returned to compliance, per EPA records.
• Monitoring Dalapon: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 6 times between October 2015 and April 2017. All have since returned to compliance, per EPA records.
• Monitoring Di(2-ethylhexyl) adipate: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 6 times between October 2015 and April 2017. All have since returned to compliance, per EPA records.
• Monitoring OXAMYL: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 6 times between October 2015 and April 2017. All have since returned to compliance, per EPA records.
• Monitoring Simazine: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 6 times between October 2015 and April 2017. All have since returned to compliance, per EPA records.
• Monitoring Di(2-ethylhexyl) phthalate: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 6 times between October 2015 and April 2017. All have since returned to compliance, per EPA records.
• Monitoring Picloram: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 6 times between October 2015 and April 2017. All have since returned to compliance, per EPA records.
• Monitoring Dinoseb: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 6 times between October 2015 and April 2017. All have since returned to compliance, per EPA records.
• Monitoring Hexachlorocyclopentadiene: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 6 times between October 2015 and April 2017. All have since returned to compliance, per EPA records.
• Monitoring Aldicarb sulfoxide: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 6 times between October 2015 and April 2017. All have since returned to compliance, per EPA records.
• Monitoring Aldicarb sulfone: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 6 times between October 2015 and April 2017. All have since returned to compliance, per EPA records.
• Monitoring Metolachlor: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 6 times between October 2015 and April 2017. All have since returned to compliance, per EPA records.
• Monitoring Carbofuran: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 6 times between October 2015 and April 2017. All have since returned to compliance, per EPA records.
• Monitoring Aldicarb: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 6 times between October 2015 and April 2017. All have since returned to compliance, per EPA records.
• Monitoring Atrazine: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 6 times between October 2015 and April 2017. All have since returned to compliance, per EPA records.
• Monitoring LASSO: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 6 times between October 2015 and April 2017. All have since returned to compliance, per EPA records.
• Monitoring Heptachlor: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 6 times between October 2015 and April 2017. All have since returned to compliance, per EPA records.
• Monitoring 3-Hydroxycarbofuran: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 6 times between October 2015 and April 2017. All have since returned to compliance, per EPA records.
• Monitoring Heptachlor epoxide: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 6 times between October 2015 and April 2017. All have since returned to compliance, per EPA records.
• Monitoring Dieldrin: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 6 times between October 2015 and April 2017. All have since returned to compliance, per EPA records.
• Monitoring Butachlor: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 6 times between October 2015 and April 2017. All have since returned to compliance, per EPA records.
• Monitoring Propachlor: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 6 times between October 2015 and April 2017. All have since returned to compliance, per EPA records.
• Monitoring 2,4-D: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 6 times between October 2015 and April 2017. All have since returned to compliance, per EPA records.
• Monitoring 2,4,5-TP: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 6 times between October 2015 and April 2017. All have since returned to compliance, per EPA records.
• Monitoring HEXACHLOROBENZENE: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 6 times between October 2015 and April 2017. All have since returned to compliance, per EPA records.
• Monitoring Benzo(a)pyrene: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 6 times between October 2015 and April 2017. All have since returned to compliance, per EPA records.
• Monitoring Pentachlorophenol: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 6 times between October 2015 and April 2017. All have since returned to compliance, per EPA records.
• Monitoring Aldrin: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 6 times between October 2015 and April 2017. All have since returned to compliance, per EPA records.
• Monitoring Total Polychlorinated Biphenyls (PCB): a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 6 times between October 2015 and April 2017. All have since returned to compliance, per EPA records.
• Monitoring Dicamba: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 6 times between October 2015 and April 2017. All have since returned to compliance, per EPA records.
• Monitoring Metribuzin: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 6 times between October 2015 and April 2017. All have since returned to compliance, per EPA records.
• Monitoring ETHYLENE DIBROMIDE: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 6 times between October 2015 and April 2017. All have since returned to compliance, per EPA records.
• Monitoring Chlordane: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 6 times between October 2015 and April 2017. All have since returned to compliance, per EPA records.
• Monitoring Lead and Copper Rule: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded once in October 2005. All have since returned to compliance, per EPA records.

• Health-based TTHM: a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded 16 times between October 2018 and July 2024. The EPA record lists a level of 89 UG/L; the limit (MCL) is 80 UG/L. EPA records do not show all of these as returned to compliance.
• Health-based Surface Water Treatment Rule: a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded 3 times in December 2018. The EPA record for these does not include a measured level. EPA records do not show all of these as returned to compliance.
• Monitoring contaminant code null: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded once in December 2021. All have since returned to compliance, per EPA records.

• Monitoring Lead and Copper Rule: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded once in July 1994. All have since returned to compliance, per EPA records.

• Health-based Manganese: a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded once in January 2025. The EPA record lists a level of 0.625 MG/L; the limit (MCL) is 0.3 MG/L. EPA records do not show all of these as returned to compliance.
• Health-based TTHM: a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded 2 times between April 2024 and October 2024. The EPA record lists a level of 85 UG/L; the limit (MCL) is 80 UG/L. EPA records do not show all of these as returned to compliance.
• Monitoring contaminant code null: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded once in December 2021. All have since returned to compliance, per EPA records.

• Monitoring Lead and Copper Rule: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded once in July 1994. All have since returned to compliance, per EPA records.

• Monitoring Lead and Copper Rule: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded once in July 1994. All have since returned to compliance, per EPA records.

As of June 2026, EPA records show no reported violations for this system in the period covered. This is not a guarantee about every substance, or about the water inside your home's plumbing.

As of June 2026, EPA records show no reported violations for this system in the period covered. This is not a guarantee about every substance, or about the water inside your home's plumbing.

• Health-based Chloride: a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded 2 times in April 2025. The EPA record lists a level of 315 MG/L; the limit (MCL) is 250 MG/L. EPA records do not show all of these as returned to compliance.
• Monitoring Lead and Copper Rule: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded once in July 1994. All have since returned to compliance, per EPA records.

• Health-based Lead and Copper Rule: a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded once in January 2001. The EPA record for these does not include a measured level. All have since returned to compliance, per EPA records.
• Monitoring Revised Total Coliform Rule: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 4 times between January 2025 and February 2025. EPA records do not show all of these as returned to compliance.
• Monitoring Lead and Copper Rule: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 4 times between January 1994 and January 2007. All have since returned to compliance, per EPA records.

• Health-based Lead and Copper Rule: a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded 4 times between July 2005 and July 2006. The EPA record for these does not include a measured level. All have since returned to compliance, per EPA records.
• Health-based Surface Water Treatment Rule: a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded once in June 1993. The EPA record for these does not include a measured level. All have since returned to compliance, per EPA records.
• Monitoring contaminant code null: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded once in December 2021. All have since returned to compliance, per EPA records.
• Monitoring Lead and Copper Rule: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded once in January 2005. All have since returned to compliance, per EPA records.

• Health-based Chloride: a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded 31 times between April 2022 and January 2024. The EPA record lists a level of 629 MG/L; the limit (MCL) is 250 MG/L. EPA records do not show all of these as returned to compliance.
• Monitoring Lead and Copper Rule: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded once in July 1994. All have since returned to compliance, per EPA records.

As of June 2026, EPA records show no reported violations for this system in the period covered. This is not a guarantee about every substance, or about the water inside your home's plumbing.

• Health-based Chloride: a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded 21 times between April 2022 and April 2025. The EPA record lists a level of 328 MG/L; the limit (MCL) is 250 MG/L. EPA records do not show all of these as returned to compliance.
• Health-based Iron: a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded 2 times in April 2022. The EPA record lists a level of 0.611 MG/L; the limit (MCL) is 0.3 MG/L. All have since returned to compliance, per EPA records.

• Health-based Chloride: a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded 2 times in April 2025. The EPA record lists a level of 305 MG/L; the limit (MCL) is 250 MG/L. EPA records do not show all of these as returned to compliance.
• Monitoring Lead and Copper Rule: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 2 times between July 1994 and October 2010. All have since returned to compliance, per EPA records.

• Monitoring Lead and Copper Rule: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded once in July 1994. All have since returned to compliance, per EPA records.

• Health-based Manganese: a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded 5 times between October 2022 and January 2024. The EPA record lists a level of 0.607 MG/L; the limit (MCL) is 0.3 MG/L. All have since returned to compliance, per EPA records.
• Health-based Iron: a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded 2 times in January 2024. The EPA record lists a level of 1.45 MG/L; the limit (MCL) is 0.3 MG/L. All have since returned to compliance, per EPA records.
• Monitoring Lead and Copper Rule: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded once in July 1994. All have since returned to compliance, per EPA records.

As of June 2026, EPA records show no reported violations for this system in the period covered. This is not a guarantee about every substance, or about the water inside your home's plumbing.

• Health-based Lead and Copper Rule: a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded once in January 2021. The EPA record for these does not include a measured level. All have since returned to compliance, per EPA records.
• Monitoring Revised Total Coliform Rule: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 3 times between March 2018 and December 2018. All have since returned to compliance, per EPA records.
• Monitoring Lead and Copper Rule: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded once in January 2018. All have since returned to compliance, per EPA records.
• Monitoring Consumer Confidence Rule: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 4 times between January 2009 and January 2016. All have since returned to compliance, per EPA records.
• Monitoring TTHM: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded once in January 2016. All have since returned to compliance, per EPA records.
• Monitoring Total Haloacetic Acids (HAA5): a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded once in January 2016. All have since returned to compliance, per EPA records.
• Monitoring contaminant code null: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded once in June 2013. All have since returned to compliance, per EPA records.

As of June 2026, EPA records show no reported violations for this system in the period covered. This is not a guarantee about every substance, or about the water inside your home's plumbing.

• Monitoring contaminant code null: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded once in December 2021. All have since returned to compliance, per EPA records.