AR / Farmington
AR · Tap water records
Farmington tap water, in plain English
Here is what the EPA's own data shows about tap water in Farmington. According to EPA SDWIS data retrieved June 2026, Farmington is served by 1 active community water system, together reported to serve about 20,140 people.
As of June 2026, EPA records show 68 violations across the community water system(s) serving Farmington, going back to the earliest EPA record. 44 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
Washington Water Authority Wwa
20,140 served · surface water · PWSID AR0000574 - Health-based TTHM: a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded 44 times between July 2015 and January 2019. The EPA record lists a level of 83 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 4 times in February 2020. EPA records do not show all of these as returned to compliance.
- 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 in October 2019. All have since returned to compliance, per EPA records.
- Monitoring Public Notice: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 16 times between December 2015 and March 2019. 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.