Wastewater Frequently Asked Question
Should I flush my leftover or expired medications?
No. Unused medication should NOT be flushed down the toilet or poured down the drain. The wastewater treatment process is not designed to remove these chemicals, and residuals from medications can build up in receiving waters and eventually make their way into the drinking supply.
Instead, unwanted medication can be safely disposed of at the City of Wentzville Law Enforcement Center in a drop box located in the main lobby.
Can I pour cooking grease down the drain?
No. Oils and grease can cause damage to the sewer lines on your property and even cause sewer main back-ups. Oils and grease should be disposed of in the garbage.
Can I pour chemicals down the drain?
No. Chemicals such as fuel, paint, antifreeze, oil, or poisons should not be poured down the drain. They may be damaging to your household lines and to the wastewater collection system. Since our wastewater treatment process is biological, chemicals can ultimately be detrimental to the entire treatment plant.
Additionally, solids items such as plastics, rags, cigarette butts, tampons, or diapers should never be flushed down the toilet or washed down the drain.
What happens to the wastewater after treatment?
Ultimately, the treated water and biosolids are returned to the environment. The cleaned water, called effluent, is discharged into McCoy Creek in accordance with the limits and guidelines of our NPDES permit. The biosolids are land applied to local fields to serve as a natural fertilizer. By working closely with Missouri Department of Natural Resources and the U.S. Environmental Protection Agency, we are able to ensure the protection of both the public health and the environment.
How can I locate the sanitary sewers on my property?
If you are planning to dig on your property, call 1-800-DIG-RITE to have your utilities marked prior to beginning the work.
What do I do if my sewer backs up?
Contact Public Works at 636-327-5102. During normal business hours, a receptionist will assist you. If you are calling outside of normal business hours, simply follow the prompts to report your concern. Please limit these after-hour calls to emergencies only.
Can my property be connected to the public sewer system?
To determine if your property can be connected to the public sewer system, please call Public Works at 636-327-5102 and ask for the Engineering Department.