General Contact Number: (530) 621-5567

Environmental Health

Definitions for Small Water Systems

El Dorado County Environmental Health Division oversees the Small Water System program. The objective of the Small Water System program is to ensure that all systems operating in the County are in compliance with the California Safe Drinking Water Act and related regulations. The Environmental Health Division issues permits, monitors water quality data, and conducts routine inspections to verify compliance.

The following definitions are referenced from the California Health and Safety Code, Section 116275: 

Public Water System is one in which the provision of water for human consumption through pipes or other constructed conveyances that has 15 or more service connections OR regularly serves at least 25 individuals daily at least 60 days out of the year.

  • Community Water System is a public water system that has 15 or more service connections used by year-long residents OR regularly serves at least 25 year-long residents of the area served by the system.
  • Noncommunity Water System is a public water system that is not a community water system.
  • NonTransient-Noncommunity Water System is a public water system that is not a community water system that regularly serves at least 25 of the same persons during six months of the year.
  • Transient Noncommunity Water System is a noncommunity water system that does NOT regularly serve at least 25 of the same persons during six months of the year.

State Small Water System (NOT a Public Water System) is a system for the provision of piped water to the public for human consumption that serves at least five, but not more than 14, service connections and does not regularly serve drinking water to more than an average of 25 individuals daily for more than 60 days out of the year.