Here is what the EPA's own data shows about tap water in Clarksville. According to EPA SDWIS data retrieved October 2026, Clarksville is served by 5 active community water systems, together reported to serve about 289,962 people.
As of October 2026, EPA records show 16 violations across the community water system(s) serving Clarksville, 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.
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 once in July 2005. All have since returned to compliance, per EPA records.
East Montgomery U.D.
18,382 served · surface water · PWSID TN0000218
Health-based TTHM: a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded 3 times between July 2020 and January 2025. The EPA record for these does not include a measured level. All have since returned to compliance, per EPA records.
Cunningham Utility District
16,068 served · surface water · PWSID TN0000167
Health-based TTHM: a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded 3 times between July 2022 and October 2024. The EPA record for these does not include a measured level. 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 5 times between July 2006 and July 2025. EPA records do not show all of these as returned to compliance.
Cumberland Heights U.D.
3,623 served · surface water · PWSID TN0000166
Monitoring Revised Total Coliform Rule: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded once in March 2019. All have since returned to compliance, per EPA records.
Monitoring Chlorine: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded once in January 2019. All have since returned to compliance, per EPA records.
Cunningham East-Montg Wtp
25 served · surface water · PWSID TN0000929
Monitoring Sodium: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded once in January 2024. 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 once in April 2022. 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 October 2026. Records cover the EPA's full reporting history for these systems. Verify at EPA ECHO.