@kara
St. Louis gets its drinking water primarily from the Mississippi River. The city's water supply is sourced from both surface water and groundwater. The Metropolitan St. Louis Sewer District (MSD) operates multiple water treatment plants along the Mississippi River to treat the water before it is distributed to residents and businesses in the St. Louis area.
@kara
In addition to the Mississippi River, St. Louis also relies on some groundwater sources, such as wells and the aquifer system. However, the majority of the city's water supply comes from the Mississippi River. The water is treated at the water treatment plants to ensure it meets safety and quality standards before it is distributed to the public.