The City of O’ Fallon Water, a public community water system under the City Department of Public Works – Water Division, provides water for about 43,596 residents living in the area of O'Fallon, Illinois. Established in 1874, the City of O’ Fallon Water System is currently obtaining its supply via purchase of treated water from the Illinois-American Water Company (IAWC), which uses a surface water source - Mississippi River.

O'Fallon Drinking Water Quality

Consumer Confidence Water Quality Reports

Under the authority of the Safe Drinking Water Act, the EPA requires O Fallon Water 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.

B+

Good

WaterZen Rating

Lead levels in the drinking water of some cities across the United States are too high, potentially creating public-health issues for the people living in those areas.

What about O'Fallon Water? How much lead is in your drinking water? And how do those levels compare to other cities in the state? We examined data from hundreds of cities across the nation to understand and grade your water quality.

As you can see, O'Fallon Water received an above-average grade because the amounts of contaminants found in the water supply were lower than most other water providers we've analyzed.

B+

Good

WaterZen Rating

Lead levels in the drinking water of some cities across the United States are too high, potentially creating public-health issues for the people living in those areas.

As you can see, O'Fallon Water received an above-average grade because the amounts of contaminants found in the water supply were lower than most other water providers we've analyzed.

Contact O Fallon Water Customer Service

Have a Question, Issue or Comment?

Main Customer Service

Physical Address:
City Hall 255 South Lincoln Avenue
O'Fallon, Illinois 62269

618-624-4500
water@ofallon.org

Emergency (24 hours - broken water main or pipeline, etc.)
618-624-4545

Pay Your O'Fallon Water Bill

Already have an account?

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

Want to create a new account?

You can create a new account on the O'Fallon Water website. Once you create the account, you can setup payment with credit, debit, or direct deposit. Click here to create an account.

Want to pay without an account?

You can make a one-time payment without creating an account. You will need to have your credit or debit card in order to make the one time payment. Click here to make a one time payment.

How to Start O'Fallon Water Service

Starting Your Service

When you move to a new home in O'Fallon, you'll most likely already have running water, but you'll still need to set up water service with the O'Fallon Water. Luckily, O'Fallon 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 O'Fallon, you'll need to stop your water service with the O'Fallon Water, 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.

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