Cleveland Heights Water Hardness & Quality Report (2026)

The Cleveland Heights Division of Water, operated under the Cleveland Water Department, supplies drinking water to the city in Cuyahoga County, Ohio, serving approximately 45,000 residents across 8 square miles. The source is surface water from Lake Erie, with an intake located 3 miles offshore. Water is treated at the Cleveland Water Division of Water Purification plants, including the Easterly and Westerly facilities, where conventional treatment processes — coagulation, sedimentation, filtration, disinfection with chloramine, and pH adjustment — ensure compliance with federal standards. Fluoride is also added for dental health.

The Lake Erie watershed drains 209,000 square miles across eight U.S. states and Ontario, Canada, with Cleveland's intake influenced by the central basin's geology. Underlying Paleozoic sedimentary rocks — primarily dolomite and limestone from the Devonian period, including the Columbus Limestone, and the Onondaga and Niagaran formations — dissolve to release alkaline minerals into the lake via tributaries and shoreline runoff. Glacial till and carbonate soils in the watershed further contribute dissolved minerals, resulting in a moderately mineralised water supply.

Moderately hard water leads to moderate scale buildup in appliances, noticeably affecting water heaters, dishwashers, and washing machines with reduced efficiency and lifespan. Soap scum on fixtures, dry skin, and dull hair are common household effects. Regular maintenance such as deliming showerheads and using additional detergent helps; the utility generally does not recommend whole-house softening due to risks of increased sodium and corrosion, though point-of-use filters can address aesthetic concerns. The supply meets EPA standards with full compliance on lead and copper rules via corrosion control; third-party analysis has detected bromodichloromethane above health guidelines.