Town of Milford

Wastewater Treatment Facility Upgrade Project

Milford, NH

Project Summary

The Milford Water Utilities Department recently received a new NPDES Discharge Permit that includes low levels for total phosphorous, aluminum, and copper. The existing WWTF will not meet the new limits without upgrades to the treatment process. Hoyle Tanner was selected through a qualification-based process to perform a treatment pilot study and prepare a technical report that identifies treatment alternatives, a recommended alternative, and provides opinions of cost for design, bidding and construction of the improvements. 

The Hoyle Tanner wastewater team has prepared public outreach materials, developed a project website to disseminate project information, conducted meetings with water utilities commissioners, conducted the tertiary treatment pilot study, presented finding of the pilot study to Milford Water Utilities and NHDES staff, organized WWTF tours for Milford operations staff to visit New England facilities using the pilot processes, and reported on the recommended alternative for the upgrade..  

The final Pilot Study report has been accepted by the NHDES and design of the improvements is underway.  A supplemental WWTF needs study is underway to combine recommended improvements into a single, larger project for bidding in 2023, and construction in 2023/2024.  


  • Study 
  • Preliminary Design 
  • Funding Assistance 
  • Alternatives Development & Analysis 
  • Public Outreach 

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