The Village of Ada provides water services to about 5,952 residents in the Ada community of Hardin County, Ohio. Ada Water Department collects water from three wells that pump from a carbonate aquifer into the water treatment plant. The water undergoes aeration, softening, stabilization, filtration, fluoridation, and disinfection with chlorine.

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Ada Drinking Water Quality

Consumer Confidence Water Quality Reports

Under the authority of the Safe Drinking Water Act, the EPA requires Ada Water Department to assess local water quality each year and distribute a Consumer Confidence Water Quality Report. At WaterZen, we review these reports and make the information available, in a concise, straightforward, and easy-to-understand way. You can find CCR report on the Ada Water Department website.

Contact Ada Water Department Customer Service

Have a Question, Issue or Comment?

Main Customer Service

Physical Address:
115 W Buckeye Ave
Po Box 292
Ada, Ohio 45810-0292


Emergency (24 hours - broken water main or pipeline, etc.)

Pay Your Ada Water Department Bill

Already have an account?

If you already have an account, you just need to login to the Ada Water Department site. Ada Water Department accepts credit cards, debit, and direct deposit. Click here to login.

How to Start Ada Water Service

Starting Your Service

When you move to a new home in Ada, you'll most likely already have running water, but you'll still need to set up water service with the Ada Water Department. Luckily, Ada has made it pretty simple with the following online form. Starting service generally takes just two business days.

Click here to fill out a Start Service Form.

Stopping Your Service

When you move out of a home in Ada, you'll need to stop your water service with the Ada Water Department, so you don't keep getting billed. Simply fill out the following online form. Stopping service normally takes just two business days.

Click here to fill out a Stop Service Form.