Avon Center Water Hardness & Quality Report (2026)

Avon Center (City of Avon), Ohio, in Lorain County — a Lorain County city adjacent to North Ridgeville and Westlake on the Lake Erie shoreline in the west Cleveland suburb — receives its municipal water from the City of Avon Water Division, drawing from Lake Erie (Lorain County) through the north Ohio treatment system.

The very hard 210.5 mg/L hardness and elevated TDS of 490.5 mg/L are significantly harder than the eastern Lorain County Lake Erie communities — this extreme hardness for a Lake Erie surface water supply is unusual and may indicate blending with local Silurian Lockport Dolomite groundwater. The Lake Erie western basin at Lorain County overlies Silurian Lockport Dolomite (very high purity dolomite — dominant north Ohio carbonate), Devonian Detroit River Formation (calcareous dolomite), and Devonian Columbus Limestone (calcareous). If supplemental groundwater from the Lockport Dolomite aquifer is blended, the dramatically elevated hardness is explained.

At 210.5 mg/L with TDS 491, Avon Center's water is very hard. A water softener is strongly recommended. Scale builds rapidly on all surfaces, appliance lifespans are significantly shortened, and water heaters require annual descaling without softening. The PFAS level of 8.3 ppt warrants a certified reverse osmosis drinking water filter — the Lorain County west Cleveland industrial corridor and the Lake Erie Ohio shore PFAS background from the industrial Northeast Ohio complex contribute to Avon Center's elevated readings.