Information for Public Drinking Water Systems

The Division of Drinking Water (DDW) regulates public water systems; oversees water recycling projects; permits water treatment devices; supports and promotes water system security; and performs a number of other functions. For more about DDW activities, click on a link below.

The Division of Financial Assistance provides funding opportunities for drinking water system improvements; provides support for small water systems and for improving technical, managerial, and financial (TMF) capacity; and certifies drinking water treatment and distribution operators.

Private domestic wells are not regulated by DDW; the GAMA Program has information pertinent to private domestic well water quality.


For recent announcements, please see the Division of Drinking Water’s webpage.

To receive email notices about upcoming drinking water regulations and other drinking water-related information, subscribe to our email lists (Click on the “Drinking Water” section).

General Information

Assessment and Protection Programs

Backflow Prevention Devices/Cross-Connection Control

Biological Treatment Systems for Nitrate Removal

Consolidation Information

Drought-Related Information

Funding-Related Information

Laboratory Data Portal

Lead and Copper Rule



Paperless Office System

Perfluorooctanoic acid (PFOA) and Perfluorooctanesulfonic acid (PFOS)

Contact Information