Small Water Systems

Contra Costa County Environmental Health is responsible for ensuring that all small water systems (with less than 200 connections) are operated in compliance with applicable local or state regulations. These regulations are intended to guarantee that the water delivered by water systems in this county shall at all times be pure, wholesome, and potable.

Handouts

Small Public Water Systems
How to Apply for a Small Water Systems

Permit and Appendixes A & B

Procedures for Disinfecting a Well
Nitrates in Drinking Water

* You can request these forms by sending us an email request or by calling 925-692-2500.

Frequently Asked Questions

If you have a question involving this program, please check our Consumer Protection Small Water Systems FAQs section.

Content provided by Contra Costa Health Services, Environmental Health Division.