CA / Ventura
CA · Tap water records
Ventura tap water, in plain English
Here is what the EPA's own data shows about tap water in Ventura. According to EPA SDWIS data retrieved June 2026, Ventura is served by 6 active community water systems, together reported to serve about 114,631 people.
As of June 2026, EPA records show 62 violations across the community water system(s) serving Ventura, going back to the earliest EPA record. 29 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
Ventura Water Department
113,500 served · surface water · PWSID CA5610017 - Health-based TTHM: a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded 2 times in July 2018. The EPA record lists a level of 0.081 MG/L; the limit (MCL) is 0.08 MG/L. All have since returned to compliance, per EPA records.
Rancho Sespe Workers Imp Assoc
600 served · groundwater · PWSID CA5601144 - 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 July 2023 and April 2024. EPA records do not show all of these as returned to compliance.
- Monitoring Lead and Copper Rule: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 3 times between August 1998 and October 2017. All have since returned to compliance, per EPA records.
Del Norte Mutual Water Co.
215 served · groundwater · PWSID CA5602104 - Health-based LEAD AND COPPER RULE REVISIONS: a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded once in 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.
- Health-based Revised Total Coliform Rule: a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded 8 times between May 2022 and June 2023. The EPA record for these does not include a measured level. 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 October 2024. 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 4 times between July 2022 and July 2024. All have since returned to compliance, per EPA records.
- Monitoring Revised Total Coliform Rule: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 3 times in January 2024. EPA records do not show all of these as returned to compliance.
- Monitoring Coliform (TCR): a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 2 times in January 2016. All have since returned to compliance, per EPA records.
- Monitoring Nitrate: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 2 times in January 2016. All have since returned to compliance, per EPA records.
Saticoy Country Club-City Of Ventura
196 served · groundwater · PWSID CA5602140 - Health-based Selenium: a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded once in January 2025. The EPA record lists a level of 0.058 MG/L; the limit (MCL) is 0.05 MG/L. EPA records do not show all of these as returned to compliance.
Shady Grove Mobile Home Park, Llc
95 served · groundwater · PWSID CA5400529 - Monitoring Consumer Confidence Rule: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded once in July 2016. All have since returned to compliance, per EPA records.
Rincon Water & Road Works
25 served · surface water · PWSID CA5601137 - Health-based Total Haloacetic Acids (HAA5): a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded 16 times between April 2020 and January 2024. The EPA record lists a level of 0.062 MG/L; the limit (MCL) is 0.06 MG/L. EPA records do not show all of these as returned to compliance.
- Health-based Stage 1 Disinfectants and Disinfection Byproducts Rule: a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded once in August 2010. The EPA record for these does not include a measured level. 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 11 times between October 2011 and July 2019. 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.