Homewood Water Hardness & Quality Report (2026)

The Village of Homewood Water Department serves the Village of Homewood in Cook County, Illinois, a suburb south of Chicago with approximately 19,000 residents. Water is primarily sourced from Lake Michigan via the City of Chicago's regional distribution system, with possible supplementary groundwater. Treatment occurs through Chicago regional facilities, including the Jardine Water Purification Plant, which applies conventional filtration, chlorination disinfection, and fluoridation before delivering the supply through Homewood's distribution network in compliance with federal drinking water standards.

Lake Michigan forms the primary watershed — a massive oligotrophic lake shaped by Pleistocene glaciation over underlying Silurian reef dolomites and limestones of the Niagaran Series. Glacial till and outwash deposits minimally filter surface inflows, while any groundwater components interact with Paleozoic carbonate bedrock. Limestone and dolomite formations release calcium and magnesium ions into the supply, imparting a hard character that contrasts with softer glacial lake profiles but aligns with Illinois' variable mineralised supplies.

At very hard levels, scale buildup accelerates in water heaters, dishwashers, boilers, and faucets, reducing efficiency by up to 50% and shortening appliance life. White deposits stain fixtures and glassware; soap scum forms readily, requiring more detergent. Regular vinegar descaling, magnetic conditioners, or template-assisted crystallization devices help mitigate effects; a whole-house water softener is strongly recommended to prevent plumbing clogs and extend equipment lifespan. Homewood's water meets EPA legal limits but exceeds health-based guidelines for 9–19 contaminants per third-party analyses, including potential haloacetic acids and radiologicals; PFAS presence is noted. Lead and copper compliance is maintained via corrosion control; annual Consumer Confidence Reports detail detected levels.