NY / Greenlawn
NY · Tap water records
Greenlawn tap water, in plain English
Here is what the EPA's own data shows about tap water in Greenlawn. According to EPA SDWIS data retrieved June 2026, Greenlawn is served by 1 active community water system, together reported to serve about 42,000 people.
As of June 2026, EPA records show 134 violations across the community water system(s) serving Greenlawn, going back to the earliest EPA record. None were health-based; the records are monitoring or reporting violations (a required test or report was late or missed). Each is listed by system below, with its status.
What the EPA has on record, by system
Greenlawn Water District
42,000 served · groundwater · PWSID NY5103271 - Monitoring 1,4-Dioxane: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 2 times in April 2025. EPA records do not show all of these as returned to compliance.
- Monitoring Chlorate: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 3 times between April 2023 and January 2025. EPA records do not show all of these as returned to compliance.
- Monitoring Nitrate-Nitrite: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 4 times between January 2024 and January 2025. EPA records do not show all of these as returned to compliance.
- Monitoring PERFLUOROBUTANE SULFONIC ACID (PFBS): a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 3 times between October 2023 and January 2024. EPA records do not show all of these as returned to compliance.
- Monitoring PERFLUOROHEPTANOIC ACID (PFHPA): a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 3 times between October 2023 and January 2024. EPA records do not show all of these as returned to compliance.
- Monitoring PERFLUOROHEXANE SULFONIC ACID (PFHXS): a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 3 times between October 2023 and January 2024. EPA records do not show all of these as returned to compliance.
- Monitoring PERFLUORONONANOIC ACID (PFNA): a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 3 times between October 2023 and January 2024. EPA records do not show all of these as returned to compliance.
- Monitoring PERFLUOROCTANE SULFONIC ACID (PFOS): a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 3 times between October 2023 and January 2024. EPA records do not show all of these as returned to compliance.
- Monitoring PERFLUOROCTANOIC ACID (PFOA): a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 3 times between October 2023 and January 2024. EPA records do not show all of these as returned to compliance.
- Monitoring PERFLUORODECANOIC ACID (PFDA): a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 3 times between October 2023 and January 2024. EPA records do not show all of these as returned to compliance.
- Monitoring PERFLUORODODECANOIC ACID (PFDOA): a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 3 times between October 2023 and January 2024. EPA records do not show all of these as returned to compliance.
- Monitoring PERFLUOROHEXANOIC ACID (PFHXA): a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 3 times between October 2023 and January 2024. EPA records do not show all of these as returned to compliance.
- Monitoring PERFLUOROUNDECANOIC ACID (PFUNA): a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 3 times between October 2023 and January 2024. EPA records do not show all of these as returned to compliance.
- Monitoring 11CL-PF3OUDS: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 3 times between October 2023 and January 2024. EPA records do not show all of these as returned to compliance.
- Monitoring 9CL-PF3ONS: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 3 times between October 2023 and January 2024. EPA records do not show all of these as returned to compliance.
- Monitoring ADONA: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 3 times between October 2023 and January 2024. EPA records do not show all of these as returned to compliance.
- Monitoring HFPO-DA: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 3 times between October 2023 and January 2024. EPA records do not show all of these as returned to compliance.
- Monitoring PERFLUOROBUTANOIC ACID (PFBA) : a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 3 times between October 2023 and January 2024. EPA records do not show all of these as returned to compliance.
- Monitoring PERFLUOROOCTANE SULFONIC ACID 6:2 FTS : a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 3 times between October 2023 and January 2024. EPA records do not show all of these as returned to compliance.
- Monitoring PERFLUOROHEXANE SULFONIC ACID 4:2 FTS: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 3 times between October 2023 and January 2024. EPA records do not show all of these as returned to compliance.
- Monitoring PERFLUORODECANE SULFONIC ACID 8:2 FTS : a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 3 times between October 2023 and January 2024. EPA records do not show all of these as returned to compliance.
- Monitoring PERFLUORO PFMPA: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 3 times between October 2023 and January 2024. EPA records do not show all of these as returned to compliance.
- Monitoring PERFLUOROPENTANOIC ACID (PFPEA) : a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 3 times between October 2023 and January 2024. EPA records do not show all of these as returned to compliance.
- Monitoring PERFLUORO PFMBA : a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 3 times between October 2023 and January 2024. EPA records do not show all of these as returned to compliance.
- Monitoring PERFLUORO PFEESA : a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 3 times between October 2023 and January 2024. EPA records do not show all of these as returned to compliance.
- Monitoring NONAFLUORO NFDHA: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 3 times between October 2023 and January 2024. EPA records do not show all of these as returned to compliance.
- Monitoring PERFLUOROPENTANESULFONIC ACID (PFPES) : a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 3 times between October 2023 and January 2024. EPA records do not show all of these as returned to compliance.
- Monitoring PERFLUOROHEPTANESULFONIC ACID (PFHPS) : a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 3 times between October 2023 and January 2024. EPA records do not show all of these as returned to compliance.
- Monitoring Arsenic: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 3 times in January 2024. EPA records do not show all of these as returned to compliance.
- Monitoring Barium: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 3 times in January 2024. EPA records do not show all of these as returned to compliance.
- Monitoring Cadmium: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 3 times in January 2024. EPA records do not show all of these as returned to compliance.
- Monitoring Chromium: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 3 times in January 2024. EPA records do not show all of these as returned to compliance.
- Monitoring CYANIDE: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 3 times in January 2024. EPA records do not show all of these as returned to compliance.
- Monitoring Fluoride: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 3 times in January 2024. EPA records do not show all of these as returned to compliance.
- Monitoring Mercury: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 3 times in January 2024. EPA records do not show all of these as returned to compliance.
- Monitoring Nickel: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 3 times in January 2024. EPA records do not show all of these as returned to compliance.
- Monitoring Antimony, Total: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 3 times in January 2024. EPA records do not show all of these as returned to compliance.
- Monitoring Beryllium, Total: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 3 times in January 2024. EPA records do not show all of these as returned to compliance.
- Monitoring Thallium, Total: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 3 times in January 2024. EPA records do not show all of these as returned to compliance.
- Monitoring Selenium: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 3 times in January 2024. EPA records do not show all of these as returned to compliance.
- Monitoring Sulfate: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 3 times between April 2023 and October 2023. All have since returned to compliance, per EPA records.
- Monitoring Chloride: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 3 times between April 2023 and October 2023. All have since returned to compliance, per EPA records.
- Monitoring CHROMIUM, HEX: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded once in April 2023. All have since returned to compliance, per EPA records.
- Monitoring Bromide: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 2 times in April 2023. EPA records do not show all of these as returned to compliance.
- Monitoring Nitrate: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded once in April 2023. All have since returned to compliance, per EPA records.
- Monitoring Nitrite: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded once in April 2023. All have since returned to compliance, per EPA records.
- Monitoring Chlorite: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded once in April 2023. All have since returned to compliance, per EPA records.
- Monitoring Bromate: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded once in April 2023. 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 once in May 2012. All have since returned to compliance, per EPA records.
What this means
A health-based violation means a contaminant was recorded above the limit the EPA tracks for it. A monitoring or reporting violation means a required test or report was late or missed — not that a contaminant was measured above a limit. “Returned to compliance” means the EPA recorded the issue as resolved.
This page summarizes the EPA's own records and does not assess whether your water is safe to drink. For the most current details, you can verify every record directly with the EPA, and contact your water system with questions.
Source: U.S. EPA Envirofacts SDWIS, retrieved June 2026. Records cover the EPA's full reporting history for these systems. Verify at EPA ECHO.