Caledonia Water Hardness & Quality Report (2026)

The Caledonia Water Utility - Village of Caledonia serves the Village of Caledonia in Racine County, Wisconsin. The utility purchases approximately 75% of its water from Racine Water Utility (RWU) and 25% from Oak Creek Water Utility (OCWU), with both wholesalers sourcing from Lake Michigan. Water is treated via conventional filtration and disinfected with chlorine at facilities managed by the wholesalers before delivery to the village distribution system. The utility is based at Caledonia Village Hall, 5043 Chester Ln, Racine, WI 53402, with 24/7 emergency response available.

The water originates from Lake Michigan within the Great Lakes watershed, shaped by glacial geology over Paleozoic bedrock of dolomites, limestones, and sandstones from the Ordovician and Silurian periods. Southeastern Wisconsin's aquifers, including the Cambrian-Ordovician sandstone system, underlie the region with glacial till and outwash influencing recharge. Lake water picks up minor dissolved solids, while any blended groundwater dissolves carbonates from limestone and dolomite formations, contributing to a moderately mineralized supply without extreme softness or hardness.

At moderately hard levels, scale buildup occurs in appliances like water heaters, dishwashers, and coffee makers, reducing efficiency over time and leaving spots on glassware. Boilers and pipes may accumulate deposits, increasing energy costs by 20–30%. Regular vinegar descaling, installing drain screens, and flushing water heaters annually are advised. A water softener is often recommended to prevent spotting and extend appliance life. Water quality is generally good; minor concerns for potential radiologicals and vanadium have been noted but remain compliant with EPA MCLs; Lake Michigan sourcing ensures low natural contaminants, monitored per Wisconsin EPA protocols.