Bay Restoration Fund Enhanced Nutrient Removal

Program Purpose

  • To meet the new commitments under the 2000 Chesapeake Bay Agreement, additional reductions of nutrient pollutants from all sources including sewage treatment plants are necessary.
  • Upgrading sewage treatment plants for nutrient removal is one of the top environmental priorities.
  • Enhanced nutrient removal (ENR) technologies allow sewage treatment plants to provide a highly advanced level of nutrient removal, achieving 3 mg/l total nitrogen and 0.3 mg/l total phosphorous.
  • The ENR strategy builds on the success of the biological nutrient removal (BNR) program already in place. 

Eligibility and Selection

  • The 67 publicly owned wastewater treatment plants with design flow of 500,000 gallons per day or greater and discharge to the Chesapeake Bay have the priority for funding.
  • Projects should be consistent with Executive Order 01.01.2003.33 – Maryland’s Priority Places Strategy.
  • Projects must be consistent with the county water and sewer plans.


  • Up to 100 percent state grant funds for eligible project costs.
  • Eligible costs may include planning, design, and construction costs.
  • Funds are provided on a reimbursable basis after a payment request is made by the grantee.
  • Non-ENR related items and expansion cost could be funded through Water Quality State Revolving Loan Fund​ and/or other federal or state grants.
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