The work involves upgrades to the intake crib in Lake Erie that feeds water into the Nottingham Water Treatment Plant, which supplies water to Cleveland’s East Side and several eastern suburbs.
Algae seen along Lake Erie near Oregon, Ohio on Aug. 7, 2019. Garret Ellison | MLiveCLEVELAND, Ohio – Decomposing algae at the bottom of Lake Erie has led to recurring problems with discolored, manganese-tainted water reaching the taps of some Cleveland Water Department customers – an issue the department is now looking to remedy with a $2 million project.
The phenomenon usually occurs in late August or early September along the lake bottom, where algae settles. As the algae decomposes, it consumes much of the oxygen available, resulting in hypoxic – or low-oxygen -- water. Lack of oxygen causes the water’s pH to drop, allowing it to absorb metals from the bottom of the lake, including some iron and manganese, which causes the discoloration, Cleveland Water Commissioner Alex Margevicius said.
Officials believe that the water captured at that higher elevation will be far enough from the lake bottom to avoid the issue. Buoys that monitor water quality have indicated the eight-foot boost will be sufficient, Margevicius said.While Margevicius described hypoxic water as an “aesthetic” problem, Councilman Mike Polensek said it routinely raises concerns from residents who fear their drinking water is unsafe.
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