Sewer Department

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Town-Approved Drainlayer Contractor List

All contractors performing the installation of sewer pipes and connections to the public sewer system in the Town of Tyngsborough must be licensed through the Sewer Department. Please email the Sewer Administrator or call 978-743-5354 for an up-to-date list of licensed drainlayers.

Notices

• Effective September 25, 2025, the sewer connection fees are as follows: 
  • Residential: $9,900 connection fee per house or unit. 
  • Commercial: $30 per gallon multiplied by the estimated gallons per day of flow. 
    
    These rates do not apply to any parcels that fall under a sewer betterment project.
• Please note that the discharge of basement sump pumps into the Tyngsborough Sewer System is illegal, which could result in an increase in sewer user fees. The Sewer Commission has the right to conduct periodic smoke tests and house inspections to identify violators of this policy and assess penalties of up to $5,000 per violation.
• The Sewer Commission is offering a low-interest rate Covenant for the Sewer Connection Fee in order to help Tyngsborough residents afford to connect to existing sewer infrastructure. The loan is offered at a 5% interest rate, payable twice yearly, for a period of 20 years.