CA / Ceres
CA · Tap water records
Ceres tap water, in plain English
Here is what the EPA's own data shows about tap water in Ceres. According to EPA SDWIS data retrieved June 2026, Ceres is served by 3 active community water systems, together reported to serve about 54,751 people.
As of June 2026, EPA records show 111 violations across the community water system(s) serving Ceres, going back to the earliest EPA record. 102 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
Ceres, City Of
54,513 served · surface water · PWSID CA5010028 - 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 Combined Uranium: a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded 3 times in October 2015. The EPA record lists a level of 30 PCI/L; the limit (MCL) is 20 PCI/L. 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 Combined Uranium: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 3 times in March 1992. All have since returned to compliance, per EPA records.
Monterey Park Tract Csd
186 served · groundwater · PWSID CA5000389 - Health-based Nitrate: a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded 15 times between April 2003 and April 2016. The EPA record lists a level of 62 MG/L; the limit (MCL) is 45 MG/L. All have since returned to compliance, per EPA records.
- Health-based Arsenic: a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded 29 times between January 2009 and April 2016. The EPA record lists a level of 34.75 MG/L; the limit (MCL) is 0.01 MG/L. All have since returned to compliance, per EPA records.
- Health-based Coliform (TCR): a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded 9 times between April 2011 and February 2015. 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 once in October 2017. 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 once in July 2006. All have since returned to compliance, per EPA records.
- Monitoring Coliform (TCR): a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded once in February 1997. All have since returned to compliance, per EPA records.
Cantua Creek Vineyards, Iv, Llc.
52 served · groundwater · PWSID CA1009051 - Health-based Arsenic: a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded 25 times between January 2016 and January 2022. The EPA record lists a level of 0.031 MG/L; the limit (MCL) is 0.01 MG/L. EPA records do not show all of these as returned to compliance.
- Health-based Surface Water Treatment Rule: a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded 20 times between June 1995 and June 2011. The EPA record for these does not include a measured level. All have since returned to compliance, per EPA records.
- Monitoring Public Notice: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded once in July 2015. All have since returned to compliance, per EPA records.
- Monitoring 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 2009. 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.