Morton Grove Water Hardness & Quality Report (2026)

The Village of Morton Grove Public Works Department operates the municipal water utility serving approximately 23,519 residents in Morton Grove, Cook County, Illinois. Water is sourced from purchased surface water originating from Lake Michigan and distributed through municipal pipes. No primary treatment is performed locally beyond disinfection using chlorine. The utility is located at 7840 Nagle Ave, Morton Grove, IL 60053 and can be contacted at 847-470-5236. Residents are advised to test for lead service lines and consult the utility's annual water quality information available at mortongroveil.org.

The supply derives from the Lake Michigan watershed, a massive Great Lakes basin fed by rivers and precipitation across multiple states. Underlying geology features Paleozoic-era sedimentary rocks, notably Silurian dolomite and Devonian limestone formations exposed in the lakebed and surrounding areas, overlain by glacial drift. This carbonate-rich geology imparts a hard character to the water through natural dissolution of calcium and magnesium minerals, yielding naturally mineralized water characteristic of northern Illinois.

Hard water in Morton Grove leads to scale buildup in appliances like water heaters, dishwashers, and coffee makers, reducing efficiency and lifespan. Laundry may appear dingy and soap scum can form on fixtures. Regular maintenance includes descaling with vinegar, cleaning aerators, and flushing water heaters annually. A water softener is recommended for households to mitigate these effects. The 2026 water quality report notes that lead exceeds EPA health goals at the 90th percentile; residents should consult mortongroveil.org for service line replacement guidance.