NY / Hornell
NY · Tap water records
Hornell tap water, in plain English
Here is what the EPA's own data shows about tap water in Hornell. According to EPA SDWIS data retrieved June 2026, Hornell is served by 2 active community water systems, together reported to serve about 10,602 people.
As of June 2026, EPA records show 10 violations across the community water system(s) serving Hornell, going back to the earliest EPA record. 6 of these are classified by the EPA as health-based (a contaminant recorded above the limit the EPA tracks); the rest are monitoring or reporting violations. Each is listed by system below, with its status.
What the EPA has on record, by system
Hornell City
9,870 served · surface water · PWSID NY5001215 - Health-based Interim Enhanced Surface Water Treatment Rule: a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded 3 times in November 2021. The EPA record for these does not include a measured level. 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 2 times in October 2020. All have since returned to compliance, per EPA records.
North Hornell Village
732 served · surface water · PWSID NY5001216 - Health-based Groundwater Rule: a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded 3 times in August 2023. The EPA record for these does not include a measured level. 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 2 times between July 1994 and June 2006. 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.