The plant’s final effluent is thoroughly tested to assure compliance with both state and federal limits before it enters a submerged, diffused, discharge system that extends approximately 1,200 feet into Lake Erie’s receiving water. Tests for biological oxygen demand, acidity, temperature, hexavalent chromium, solids, grease and oil are performed at the laboratory. Wastewater related tests for ammonia, kjeldahl nitrogen, nitrate, nitrite, phosphorus, arsenic, aluminum, cadmium, total chromium, copper, and other  trace metals are performed at the Water Filtration Plant’s  laboratory.

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