Upper Lake Hardisty System
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.
CA / Upper Lake
CA · Tap water records
Upper Lake tap water, in plain English
Here is what the EPA's own data shows about tap water in Upper Lake. According to EPA SDWIS data retrieved June 2026, Upper Lake is served by 1 active community water system, together reported to serve about 98 people.
As of June 2026, EPA records show no reported violations for the community water system(s) serving Upper Lake. This means none of the federal drinking-water standards tracked in the EPA's SDWIS database were recorded as exceeded in the period covered. It is not a guarantee about every substance, or about the water inside your home's own plumbing.
- 1Community water system
- ~98People served (EPA-reported)
- June 2026EPA records reviewed through
What the EPA has on record, by system
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.