Drinking Water

Water Systems

Drinking water systems are defined as either private or public systems. It is the responsibility of private well owners to maintain the safety of their drinking water. Only public systems are regulated by the State of Idaho.  Public Health - Idaho North Central District provides the following services:

Private Water System

  • Provide information and assistance to owners of private water systems in order to ensure safe and sanitary water quality.
  • Provide water sample containers from private laboratories to the public for testing their water system.
  • Conduct sanitary surveys as requested by mortgage companies. A fee is charged for this service.

Public Water System

  • Oversee and implement the Public Water System (PWS) contract with Idaho Department of Environmental Quality.
  • Provide regulatory oversight and technical assistance to small public water systems. This includes, but is not limited to, schools, mobile home parks, small subdivisions, motels, restaurants, and businesses.
  • Evaluate chemical and bacteria monitoring of public water systems for compliance with state regulations.
  • Perform sanitary surveys of all public water systems, under DEQ contract, at least once every five years.
  • Investigate and take appropriate action on complaints from the public.

Water System Regulations and Standards

Drinking Water Rules for Public Water Systems (Idaho DEQ)

Water Haulers

Public Health - Idaho North Central District
215 10th Street
Lewiston, ID 83501

Phone: (208) 799-3100
Fax: (208) 799-0349

Idaho Careline: 211

EPI ISSUES: 1-800-632-8000
For medical emergencies dial: 911.


All information is general in nature and is not intended to be used as a substitute for appropriate professional advice.

For more information please call (208) 799-3100 or Idaho Careline: 211.

Idaho Public Health

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