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. To learn more about DDW activities, click on a link below.
The Division of Financial Assistance (DFA) 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.
Quick Links
Announcements | Program | Reports and Publications | Rules and Regulations | PFAS | Tools | Permits | Additional Information
Announcements
For recent announcements, please see the Division of Drinking Water’s webpage.
Program
Reports and Publications
Rules and Regulations
PFAs
- General Order Requiring Monitoring for PFAS in Drinking Water Sources
- Perfluorooctanoic acid (PFOA) and Perfluorooctanesulfonic acid (PFOS)
- Frequently Asked Questions: Per- and Poly-fluoroalkyl Substances (PFAS)Water Monitoring
- Example PFOA/PFOS Notification Letter: (PDF) (Word)
- PFAS: Per- and Polyfluoroalkyl Substances
Tools
- Laboratory Data Portal
- Monitoring
- Paperless Office System
Additional Information
- Biological Treatment Systems for Nitrate Removal FAQ 2020 (PDF)
- Consolidation Information
- Funding-Related Information
- Public Water Systems
- Security and Emergencies
- Water System Guidance
- NaOCL Dosage Examples (PDF)
- Continuous Chlorination Disinfection System Operation, Maintenance & Monitoring Guidance for Small Water Systems (PDF)
- Continuous Chlorination Disinfection System: Design, Installation & Configuration Guidance for Small Water Systems (PDF)
- Fluoridation (includes April 2015 Revision to Optimal Fluoride Level)
- Water System Administrator Info
Email Subscription List
Email Subscription List
To receive email notices about upcoming drinking water regulations and other drinking water-related information, subscribe to our email lists and select the "Drinking Water" section.
