ST. CHARLES COUNTY, Mo. – The city of St. Charles goes to court against Ameren.

They’re asking for a temporary restraining order to stop Ameren from building an extraction well at its Huster Road substation. City leaders say that’s the source of years of groundwater contamination of the St. Charles water supply.

Ameren Missouri’s statement:

“The City of St. Charles continues to misrepresent the facts and to deliberately and intentionally delay ongoing remediation efforts. On multiple occasions, Ameren Missouri has sent letters to the City pointing out that the City is acting irresponsibly by attempting to hamper remediation work by operating City Well 4 to negatively influence ongoing treatment. It is inappropriate. In the last 30 days, it’s estimated that the City has wasted more than 48 million gallons of clean groundwater by pumping it directly into the sewer system. That’s the equivalent of draining a 10-acre, 14-foot-deep pond.

Ameren Missouri has operated numerous onsite extraction wells at the Huster site since 2014. The proposed well is only necessary due to the City’s irresponsible behavior regarding City Well 4. Treatment techniques in progress are approved and performed under the supervision of the U.S. Environmental Protection Agency (EPA), and future treatment work will commence after EPA approval.”

Ameren Missouri Spokesperson