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Marion County Wellfield Education Corporation

Groundwater and Drinking Water Protection for Indianapolis and Marion County Indiana

  • FAQ
    • Am I in a Drinking Water Protection Area?
    • Wellfield FAQs
    • Who is MCWEC?
  • For Businesses
    • Industry Specific Guidelines
    • Local Regulations
    • Guides, Forms, & Resources
  • Free Assessments
  • Waste Disposal
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Main Content

Groundwater is Your Drinking Water: PROTECT IT!

Education and resources for all citizens plus businesses in Marion County, IN wellfields to prevent pollution to our drinking water resources.

Am I in a Drinking Water Protection Area?

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?

Schedule Assessment

We conduct free and confidental personalized site assessments for any business located in one of Marion County’s wellfields.

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Business Resources

Printable guides, forms, and checklists for best management practices and required for compliance with Marion County and Indianapolis wellfield regulations.

Browse resources

Secondary Containment /
Spill Assistance Program

Businesses located in a wellfield are eligible for assistance in order to help them achieve compliance with the wellfield protection code.

Get supplies

Recent News

How can soil type affect water quality?

October 30, 2025

Texture and composition of soil is important when thinking about where water and contaminants in water will flow. Whether you are a farmer looking to better care for your crops, a homeowner, or a business, you can better understand your property with a look into your soil. What are the basic soil types? There are […]

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One Water Indiana launches comprehensive resource library for water education

October 27, 2025

One Water Indiana, with support from partners across the state, has launched a comprehensive water education resource library with tools for anyone interested in providing water education in Indiana. Within the library, users can search by audience (school levels, homeowners, businesss, etc) and topic to find water education materials to discuss many topics such as […]

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What is a water table?

October 8, 2025

When thinking about water underground, the water table is a good place to start. As water seeps into the earth it eventually reaches a point where the rocks and soil are full of water. The water table is the top “surface” of this underground, water-saturated area. Think about digging a hole on the beach. After […]

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By the numbers

7
Wellfield Protection Areas in Marion County, Indiana
33
square miles of land legally designated as Wellfield Protection Areas
10
billion gallons of water used yearly as part of the public water supply
72
wells which supply water to the public drinking water system

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Free, Confidential Assessments

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 assessments are free and intended to ensure businesses are operating in ways protective to groundwater; observations are NOT reported to any regulatory agencies.

Schedule Your Assessment

About the Marion County Wellfield Corporation

In My Community

Get connected with the water in your community!
The U.S. EPA offers a variety of tools to discover the environment around you.

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