Water Treatment Plant
201 E. Jackson
Vandalia, Illinois 62471
Phone: (618) 283-0111
Water Plant Superintendent
Joe Simpson
In 1898, the City of Vandalia first began water treatment services for the residents of Vandalia. In the 100 years since its inception, the City of Vandalia Water Treatment Plant has provided safe and reliable water service.
The plant has the capability of producing 2 million gallons of portable water on a daily basis with storage capacity of 2.5 million gallons.
The city's primary source of water is Vandalia Lake.
As of September 2025, the City is in the process of constructing a new water treatment plant in Vandalia. Proposed completion will likely be late 2026/early 2027.
Sewage Treatment Plant
1804 N. Kennedy
Vandalia, Illinois 62471
Phone: (618) 283-3148
Sewer Plant Superintendent
Mike Anderson
Built in 1987, the Vandalia Wastewater Treatment Works consists of a sanitary sewer system and a treatment plant that supplies flow equalization, secondary, biological, advanced secondary, disinfecting and sludge handling facilities. This state-of-the-art facility provides treatment processes to handle over 1.5 million gallons of wastewater per day.
The plant has the capability of handling not only normal wastewater generated by the municipality but is able to manage the treatment of specialized wastewater as well.
The Vandalia Wastewater Treatment Plant is inspected on an annual basis for proper processing and disposal of wastewater and always exceeds the minimum standards as set forth by the Illinois Environmental Protection Agency.
