Independence Water Hardness & Quality Report (2026)

The City of Independence Water Department serves approximately 250,000 people in Independence, Missouri, plus 12 wholesale customers. Water is drawn from 42 wells at the Courtney Bend Water Treatment Plant in Jackson County, tapping the Missouri River Alluvial Aquifer as the sole groundwater source. The plant softens and disinfects well water to meet federal and state regulations, with a capacity of up to 48 million gallons per day to serve residential and wholesale demand across the region.

The Missouri River Alluvial Aquifer underlies the Courtney Bottoms area north of the city, part of the broader Mississippi River Valley alluvial plain. Formed during the Quaternary Period through Missouri River sediment deposition, it consists of unconsolidated sands, gravels, and silts overlying Paleozoic limestone formations. Precipitation infiltrates these permeable alluvial deposits to recharge the aquifer, which flows above the limestone bedrock. Natural carbonate dissolution and mineral leaching from these formations elevate calcium and magnesium, imparting a hard character to the supply.

Hard water at 124 mg/L causes scale buildup in pipes, water heaters, dishwashers, and washing machines, reducing efficiency and lifespan. Kettles and faucets may develop limescale deposits, while laundry and skin may feel less clean. Regular appliance deliming, vinegar cleaning, and installing a water softener are recommended to protect plumbing and extend equipment life. Per the 2022 CCR, average pH is 9.72, alkalinity 64 mg/L, calcium 13.7 mg/L, and magnesium 16.8 mg/L. Treatment includes softening and disinfection; disinfection byproducts are monitored and compliant with no MCL violations reported.