Does Riverbank, CA tap water have any EPA-reported violations?

As of June 2026, EPA SDWIS records show 53 violation(s) across the community water systems serving Riverbank, of which 50 are classified by the EPA as health-based. Most older violations have returned to compliance; see the per-system list.

Where does Riverbank, CA tap water come from?

Riverbank is served by 2 active community water system(s). Their primary sources, per EPA records, are: groundwater.

CA / Riverbank

CA · Tap water records

Riverbank tap water, in plain English

Here is what the EPA's own data shows about tap water in Riverbank. According to EPA SDWIS data retrieved June 2026, Riverbank is served by 2 active community water systems, together reported to serve about 24,884 people.

As of June 2026, EPA records show 53 violations across the community water system(s) serving Riverbank, going back to the earliest EPA record. 50 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.

2

Community water systems
~24,884

People served (EPA-reported)
June 2026

EPA records reviewed through

What the EPA has on record, by system

Riverbank, City Of

24,834 served · groundwater · PWSID CA5010018

Health-based Nitrate: a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded 3 times in November 2021. The EPA record lists a level of 17 MG/L; the limit (MCL) is 10 MG/L. EPA records do not show all of these as returned to compliance.

Century Mobile Home Park

50 served · groundwater · PWSID CA3900579

Health-based Arsenic: a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded 47 times between January 2016 and October 2025. The EPA record lists a level of 13.5 MG/L; the limit (MCL) is 0.01 MG/L. 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 2005 and July 2012. 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 once in April 2000. 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.