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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 Reviews
  • Waste Disposal
  • Reports
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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?

Wellfield Reviews

We can help! We provide free, confidental wellfield reviews for any new or existing business located in one of Marion County, Indiana's wellfields.

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Business Resources

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

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Secondary Containment Help

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

Recent News

Days to Celebrate Drinking Water Protection Year Round

February 11, 2026

There’s nothing to get you out of that winter funk than a reason to celebrate! Thinking about water conservation and pollution prevent is something we do every day, but throughout the year we can take time to recognize some special water related celebrations. During these times, its good to share with family, friends, or customers […]

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4 Reasons Reducing Waste Helps Your Community (and Your Water)

February 7, 2026

Protecting water resources may not be at the top of mind as you are taking out your recycling each week, but reducing and disposing of waste properly is key to pollution prevention of both groundwater and surface water resources. Check out these points from One Water Indiana’s new infographic about the benefits of reducing waste! […]

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Stormwater: Best Management Practices for Businesses

January 30, 2026

Owners of Stormwater infrastructure are required by the City of Indianapolis Stormwater Design and Construction Specifications Manual and City County Code to complete annual inspections and maintenance. Stormwater Best Management Practices (BMPs) are part of the National Pollutant Discharge Elimination System program that aim to control the quantity and quality of stormwater. Successful BMPs assist […]

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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 Wellfield Reviews

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.

Schedule Your Wellfield Review

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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