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City of Nashua News

Posted on: June 18, 2018

Clean Water SRF Environmental Review

The City of Nashua, New Hampshire has applied for Clean Water State Revolving Loan Funds through the State of New Hampshire Department of Environmental Services (NH-DES), in accordance with provisions of Charter Env-Wq 500 rules of the department. These rules prescribe procedures for the application process concerning the State Revolving Fund (SRF). This document will discuss the requirements of Part Env-Wq 508 of these rules, the environmental review. 


The proposed project consists of upgrading (13) thirteen pump stations and (1) one sewer CSO pump station located at various sites throughout the City of Nashua. The construction is estimated to last 2 years with the most critical pumps being renovated first. The total construction costs are estimated at $7,400,000. 


The pump stations move wastewater from a downhill location to an upstream sewer manhole where it can flow by gravity. The pump stations are located throughout the City. Some are small pump stations, consisting of a manhole with submersible pumps and others are larger consisting of a building with all pumps, valves, piping and controls enclosed. The following summarizes the upgrades proposed at each pump station: 


  • Northgate – Renovate existing building, relocate emergency generator outside, install new controls and relocate from lower level to ground floor level, new pumps, valves and interior piping.  New force main under Nashua River to receiving manhole on opposite side. This pump station is located within 250 feet of the high water line on Nashua River, which requires a shoreland permit, which has been approved by the NHDES Water Division/Shoreland Program. 
  • Trestle Brook – Renovate existing building, replace packaged wet well-dry well at same location. Install new pumps, valves and interior piping. Tie into existing force main. 
  • Blackstone – Install new building (30’x20’) at the location of existing pump station. Install new pumps, piping, valves, controls and emergency generator.  Tie into existing force main.
  • Watson, Gillis, Maurice – Replace existing wet well with packaged wet well-dry well at same location. Install new pumps, valves controls and interior piping. Replace existing force main. 
  • Santerre –Install new building (30'x15') at same location. Install new pumps, piping, valves, controls and emergency generator.  Tie into existing force main. 
  • Newton, Fulton, Harris, Spalding – Replace existing wet well with a new packaged suction lift station. Install new pumps, piping, valves and controls. Tie into existing force main. 
  • Marshall – Install new control panel closer to existing pump station. 
  • National – Replace existing wet well with new packaged wet well-dry well relocated from street to park area in front of Sandy Pond. Install new pumps, valves, controls and interior piping. Replace existing force main. 
  • Bridge Street CSO – Upgrades to electrical system include new transformer and electric cables. 


The full document is available at, and comments may be addressed to, the following locations: William Keating, Nashua Wastewater Facility, 2 Sawmill Road, Nashua, NH 03060, and Tracy Wood, NHDES, Wastewater Engineering Bureau, P.O. Box 95, Concord, NH 03302-0095.   The deadline for submitting comments is (30) thirty days from the date of this publication. 


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