CA / Fort Irwin
CA · Tap water records
Fort Irwin tap water, in plain English
Here is what the EPA's own data shows about tap water in Fort Irwin. According to EPA SDWIS data retrieved June 2026, Fort Irwin is served by 1 active community water system, together reported to serve about 15,701 people.
As of June 2026, EPA records show 183 violations across the community water system(s) serving Fort Irwin, going back to the earliest EPA record. 180 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
Us Army Fort Irwin
15,701 served · groundwater · PWSID CA3610705 - Health-based Arsenic: a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded 123 times between April 2006 and April 2016. The EPA record lists a level of 0.029 MG/L; the limit (MCL) is 0.01 MG/L. All have since returned to compliance, per EPA records.
- Health-based Fluoride: a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded 57 times between October 2011 and April 2016. The EPA record lists a level of 9.2 MG/L; the limit (MCL) is 2 MG/L. 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 3 times in October 2017. 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.