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The Chesapeake Bay has experienced a decline in water quality due to over-enrichment of nutrients (mainly phosphorus and nitrogen). Treated effluent from wastewater treatment plants is one of the top three major contributors of nutrients entering the Bay (urban and agricultural runoffs are the other two). In response, the State of Maryland signed into law Senate Bill 320 (Bay Restoration Fund) on May 26, 2004. The purpose of the bill is to create a dedicated fund, financed by wastewater treatment plant users, to upgrade treatment technology so that treatment plants will be capable of achieving wastewater effluent quality of 3 mg/l total nitrogen and 0.3 mg/l total phosphorus. The signing of this bill initiated Maryland's efforts to reduce nitrogen and phosphorus loading entering the Bay by over 7.5 million pounds of nitrogen per year and over 260 thousand pounds of phosphorus per year, which represent over one-third of Maryland's commitment under the Chesapeake Bay 2000 Agreement.

The City of Aberdeen is committed to constructing a facility which is capable of achieving a wastewater effluent quality of 3 mg/l total nitrogen and 0.3 mg/l total phosphorus as set forth in the Bay Restoration Fund and the City's ENR agreement with the state of Maryland Department of the Environment (MDE).

Aberdeen Wastewater Treatment Plant