Resources
A Delaware water agency directory, a certified-laboratory guide, and a water-quality glossary.
Guides in this section
Delaware Water Agency Directory
Which agency handles what — ODW, DNREC, DDOE, and OCCL.
Read the guide →Certified Laboratory Guide
How to find and evaluate a certified drinking-water laboratory in Delaware.
Read the guide →Water-quality glossary
- CCR (Consumer Confidence Report)
- The annual water-quality report a community water system is required to publish, summarizing monitoring results, source water, and any violations.
- PWSID (Public Water System ID)
- The unique identifier Delaware assigns to each public water system, used to confirm you have the correct system and report.
- MCL (Maximum Contaminant Level)
- The highest level of a contaminant allowed in water delivered to customers.
- Drinking Water Watch
- Delaware's public online tool for looking up public water systems, monitoring data, and compliance status.
- DNREC Well Viewer
- Delaware's public tool for searching well permit and construction records.
Downloads
Planning aids and worksheets are in development, including a Delaware Public Water System Lookup Checklist, a Private Well Record Checklist, and a School Fixture Inventory template. These will be labeled as unofficial planning aids, not substitutes for government forms, once published.
Official Delaware and federal links
- Delaware Office of Drinking Water (Division of Public Health)
- Drinking Water Watch
- DNREC Well Permits and Well Viewer
- DNREC PFAS program
- Delaware Department of Education, Facilities and Operations
- Office of Child Care Licensing regulations
- U.S. EPA drinking water resources
DelawareWaterQuality.com is an independent educational resource and is not affiliated with any government agency listed above.
Last reviewed: 2026-07-11. Report a correction.