Does Westerville, OH tap water have any EPA-reported violations?

As of June 2026, EPA SDWIS records show 5 violation(s) across the community water systems serving Westerville, of which 3 are classified by the EPA as health-based. Most older violations have returned to compliance; see the per-system list.

Where does Westerville, OH tap water come from?

Westerville is served by 8 active community water system(s). Their primary sources, per EPA records, are: surface water, groundwater.

OH / Westerville

OH · Tap water records

Westerville tap water, in plain English

Here is what the EPA's own data shows about tap water in Westerville. According to EPA SDWIS data retrieved June 2026, Westerville is served by 8 active community water systems, together reported to serve about 28,829 people.

As of June 2026, EPA records show 5 violations across the community water system(s) serving Westerville, going back to the earliest EPA record. 3 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.

8

Community water systems
~28,829

People served (EPA-reported)
June 2026

EPA records reviewed through

What the EPA has on record, by system

Aqua Ohio - Lawrence County

8,130 served · surface water · PWSID OH4400803

Health-based TTHM: a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded 3 times in October 2024. The EPA record lists a level of 0.082 MG/L; the limit (MCL) is 0.08 MG/L. EPA records do not show all of these as returned to compliance.

Aqua Ohio - Blacklick

7,100 served · groundwater · PWSID OH2502412

Monitoring Lead and Copper Rule: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded once in January 1995. All have since returned to compliance, per EPA records.