CA / Downey
CA · Tap water records
Downey tap water, in plain English
Here is what the EPA's own data shows about tap water in Downey. According to EPA SDWIS data retrieved June 2026, Downey is served by 9 active community water systems, together reported to serve about 312,793 people.
As of June 2026, EPA records show 130 violations across the community water system(s) serving Downey, 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
Downey - City, Water Dept.
110,556 served · groundwater · PWSID CA1910034 - Health-based Revised Total Coliform Rule: a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded 5 times in February 2018. The EPA record for these does not include a measured level. All have since returned to compliance, per EPA records.
- Monitoring E. COLI: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded once in May 2012. All have since returned to compliance, per EPA records.
Liberty Utilities - Bellflower-Norwalk
72,624 served · surface water · PWSID CA1910211 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.
Liberty Utilities (Av Ranchos) Corp.
64,469 served · groundwater · PWSID CA3610003 - Monitoring Nitrate: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 4 times in January 2021. EPA records do not show all of these as returned to compliance.
Liberty Utilities - Compton
26,371 served · surface water · PWSID CA1910021 - Monitoring Lead and Copper Rule: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 7 times between October 2017 and October 2019. All have since returned to compliance, per EPA records.
Liberty Utilities - Lynwood
24,701 served · surface water · PWSID CA1910161 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.
City Of Bell Gardens
11,437 served · surface water · PWSID CA1910108 - 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 in October 2019. All have since returned to compliance, per EPA records.
Liberty Utilities - Mesa Crest
1,619 served · surface water · PWSID CA1910241 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.
Liberty -Yermo
861 served · groundwater · PWSID CA3610118 - Health-based Coliform (TCR): a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded 24 times between March 1997 and August 2013. 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 4 times between June 2004 and July 2013. 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 78 times between June 1995 and January 2013. 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 3 times in January 2013. All have since returned to compliance, per EPA records.
- 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 2007. All have since returned to compliance, per EPA records.
Liberty-Bellview Heights
155 served · groundwater · PWSID CA3600010 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.
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.