MO / Adrian
MO · Tap water records
Adrian tap water, in plain English
Here is what the EPA's own data shows about tap water in Adrian. According to EPA SDWIS data retrieved June 2026, Adrian is served by 2 active community water systems, together reported to serve about 4,325 people.
As of June 2026, EPA records show 91 violations across the community water system(s) serving Adrian, going back to the earliest EPA record. 14 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
Bates County Pwsd 5
2,690 served · surface water · PWSID MO1024034 - Health-based TTHM: a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded 5 times between July 2015 and April 2021. The EPA record lists a level of 90 UG/L; the limit (MCL) is 80 UG/L. All have since returned to compliance, per EPA records.
- Monitoring LEAD AND COPPER RULE REVISIONS: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded once in July 2025. 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 2 times between July 2012 and July 2021. All have since returned to compliance, per EPA records.
Adrian Pws
1,635 served · surface water · PWSID MO1010001 - Health-based TTHM: a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded 8 times between July 2014 and July 2021. The EPA record lists a level of 84.28 UG/L; the limit (MCL) is 80 UG/L. All have since returned to compliance, per EPA records.
- Health-based Interim Enhanced Surface Water Treatment Rule: a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded once in May 2020. The EPA record for these does not include a measured level. All have since returned to compliance, per EPA records.
- Monitoring Surface Water Treatment Rule: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 2 times in February 2025. EPA records do not show all of these as returned to compliance.
- Monitoring Interim Enhanced Surface Water Treatment Rule: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 4 times in February 2025. EPA records do not show all of these as returned to compliance.
- Monitoring Simazine: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 4 times between April 2021 and January 2025. EPA records do not show all of these as returned to compliance.
- Monitoring Metolachlor: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 4 times between April 2021 and January 2025. EPA records do not show all of these as returned to compliance.
- Monitoring Atrazine: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 4 times between April 2021 and January 2025. EPA records do not show all of these as returned to compliance.
- Monitoring LASSO: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 4 times between April 2021 and January 2025. EPA records do not show all of these as returned to compliance.
- Monitoring CYANAZINE: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 4 times between April 2021 and January 2025. EPA records do not show all of these as returned to compliance.
- Monitoring Butachlor: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 4 times between April 2021 and January 2025. EPA records do not show all of these as returned to compliance.
- Monitoring Propachlor: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 4 times between April 2021 and January 2025. EPA records do not show all of these as returned to compliance.
- Monitoring Metribuzin: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 4 times between April 2021 and January 2025. 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 6 times between March 2018 and November 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 9 times between January 2020 and January 2024. 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 9 times between January 2020 and January 2024. EPA records do not show all of these as returned to compliance.
- Monitoring Public Notice: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 7 times between March 2015 and March 2021. 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 5 times between July 2005 and July 2020. EPA records do not show all of these as returned to compliance.
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.