CA / Guatay
CA · Tap water records
Guatay tap water, in plain English
Here is what the EPA's own data shows about tap water in Guatay. According to EPA SDWIS data retrieved June 2026, Guatay is served by 1 active community water system, together reported to serve about 100 people.
As of June 2026, EPA records show 64 violations across the community water system(s) serving Guatay, going back to the earliest EPA record. 54 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
Guatay Mutual Benefit Corporation
100 served · groundwater · PWSID CA3700897 - Health-based Combined Uranium: a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded 54 times between April 2016 and October 2023. The EPA record lists a level of 24 PCI/L; the limit (MCL) is 20 PCI/L. EPA records do not show all of these as returned to compliance.
- 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 2023. 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 2 times between July 1993 and October 2021. EPA records do not show all of these as returned to compliance.
- Monitoring Iron: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded once in January 2016. EPA records do not show all of these as returned to compliance.
- Monitoring Manganese: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded once in January 2016. EPA records do not show all of these as returned to compliance.
- Monitoring Odor: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded once in January 2016. EPA records do not show all of these as returned to compliance.
- Monitoring TDS: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded once in January 2016. EPA records do not show all of these as returned to compliance.
- Monitoring METHYL TERT-BUTYL ETHER: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded once in January 2016. EPA records do not show all of these as returned to compliance.
- Monitoring Benzene: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded once in January 2016. 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.