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

As of June 2026, EPA SDWIS records show 5 violation(s) across the community water systems serving Morro Bay, 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 Morro Bay, CA tap water come from?

Morro Bay is served by 3 active community water system(s). Their primary sources, per EPA records, are: surface water, groundwater.

CA / Morro Bay

CA · Tap water records

Morro Bay tap water, in plain English

Here is what the EPA's own data shows about tap water in Morro Bay. According to EPA SDWIS data retrieved June 2026, Morro Bay is served by 3 active community water systems, together reported to serve about 14,125 people.

As of June 2026, EPA records show 5 violations across the community water system(s) serving Morro Bay, 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.

3

Community water systems
~14,125

People served (EPA-reported)
June 2026

EPA records reviewed through

What the EPA has on record, by system

Morro Bay Pw Dept - Water Division

13,757 served · surface water · PWSID CA4010011

As of June 2026, EPA records show no reported violations for this system in the period covered. This is not a guarantee about every substance, or about the water inside your home's plumbing.

Rancho Colina Mobile Home Park

249 served · groundwater · PWSID CA4000653

Health-based Nitrate: a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded 3 times in August 2023. The EPA record lists a level of 11 MG/L; the limit (MCL) is 10 MG/L. All have since returned to compliance, per EPA records.

Dune 3 Mutual Water Company, Llc

119 served · groundwater · PWSID CA1502690

Monitoring Lead and Copper Rule: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 2 times between January 1996 and November 1997. 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.