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Annapolis Water Reclamation Facility ENR

Project Background:

The Annapolis Water Reclamation Facility (WRF) is jointly owned by Anne Arundel County and the City of Annapolis. It was originally constructed in the 1970s and has undergone numerous upgrades and expansions since that time. The Biological Nutrient Removal project, completed in 2003, provided for treatment to effluent nitrogen levels of 6 mg/l. The plant was expanded to a capacity of 13 million gallons per day (mgd) in 2007. 

This is one of seven Enhanced Nutrient Removal (ENR) projects that the County is pursuing in compliance with the State’s Bay Restoration Program.  When complete, nitrogen concentrate levels will be reduced from 8mg/L to 3 mg/L and phosphorus from 2 m/L to 0.3 mg/L.

  • Meet pollutant load limits set in the State's Bay Restoration Program.
  • Significantly reduce nitrogen released after treatment process from 8 mg/L to 3 mg/L.
  • Significantly reduce phosphorous released after treatment process from 2 mg/L to 0.3 mg/L.
Project Manager:
Sharon Cole
Project Investment:
$19 Million
Notice to Proceed:
May 2011
Completion Date:
June 2015
Project Updates:
Dec 2013 - 95% complete
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