Use our interactive tools to search if your home or business is located in a drinking water protection area (also known as a wellfield or wellhead protection area). …
Search the map about Am I in a Drinking Water Protection Area?
Marion County Wellfield Education Corporation
Groundwater and Drinking Water Protection for Indianapolis and Marion County Indiana
Education and resources for Marion County, IN citizens plus businesses located in a wellfield to prevent pollution to our drinking water resources.

Use our interactive tools to search if your home or business is located in a drinking water protection area (also known as a wellfield or wellhead protection area). …
Search the map about Am I in a Drinking Water Protection Area?

We can help! We provide free, confidental wellfield reviews for any new or existing business located in one of Marion County, Indiana's wellfields.
Get started
Printable guides, forms, and checklists for best management practices required in accordance with Marion County and Indianapolis wellfield regulations.
Browse resources
Businesses located in Marion County wellfields may be eligible to receive free secondary containment products to help prevent spills and protect drinking water.
Get supplies
After more than a decade, the Indiana Department of Environmental Management (IDEM) published a comprehensive annual report detailing the agency’s key performance indicators and highlights from 2025. This report is a high level summary of all the work and technical data reported by IDEM throughout the year and is available in an accessible narrative style […]

As part of drinking water protection in Marion County, Indiana, the Marion County Wellfield Education Corporation focuses on identifying potential sources of contamination in the drinking water protection areas (wellfields). Most import are identifying those sources that are particularly hazardous to human health and those occurring in large quantities. Each year, as part of the […]

Participants of the Indiana Watershed Leadership Academy developed a comprehensive guide to Indiana water related legislation from 2011-2024 (which was also updated in 2025). The report not only highlights laws that were passed, but laws that failed as well as studies and plans completed over the years by various agencies and task forces. The report […]
MCWEC representatives can help your business identify site specific ways to limit potential for groundwater contamination. You may receive free spill containment supplies in return. These reviews are free and intended to ensure businesses are operating in ways protective to groundwater; observations are NOT reported to any regulatory agencies.
Get connected with the water in your community!
The U.S. EPA offers a variety of tools to discover the environment around you.