Wastewater Engineering

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The effective management and treatment of municipal and industrial wastewater is critical to maintaining public

Climate change impacts
on our infrastructure and wastewater treatment facilities

presentation by John Braccio, President & CEO given at the 2015 NEWEA spring conference.

Link to Presentation

health and a clean, safe environment. Wright-Pierce's Wastewater Engineers have a wealth of experience in treating wastewater and its residuals from small decentralized systems to large, complex municipal and industrial systems.

Over our 65 year history, wastewater engineering services have been the mainstay of our company. We are a leader ranking in ENR's Top 25 wastewater firms in the U.S. We are known for our innovation, our application of appropriate technology, and our reliable operator-friendly solutions.


Mattabassett WPCF Voted "Top Project” In New England Region by
Engineering News Record
The Mattabassett District Water Pollution Control Facility upgrade for enhanced nitrogen removal, was voted the "Best New England Project” in the Water/Environment category. The upgraded facility, one of the largest in Connecticut, is consistently achieving stringent discharge limits.
Case study

Wright-Pierce Ranks in Top 25 Wastewater Firms In US

We are proud to have also have been recognized in the Top 25 engineering firms in the US in the following industry categories:
  • Top 25 Wastewater Treatment 
  • Top 25 Sanitary and Storm Sewers

Wright-Pierce Ranks in Top 200 Environmental Firms in the US
Wright-Pierce has been recognized once again this year as one of the "Top 200” Environmental Firms by Engineering News Record (ENR). This year we achieved our highest rank to date.

Wastewater Treatment Facilities Upgrades Earn "Engineering Excellence" Awards


Smithfield, RI
The first tertiary wastewater treatment ballasted flocculation system in the State of Rhode Island and one of the first in the region using this new manufactured technology earns an ACEC Award for Engineering Excellence. Read more. 


Falmouth, ME
The design of the Falmouth, ME wastewater treatment facility upgrade resulted in a nearly 40% increase in treatment efficiency and over 40% reduction in energy consumption. Project received the Engineering Excellence award from American Council of Engineering Companies (ACEC) of Maine. Read more.

Sanford, ME
The design of the Sanford, ME wastewater treatment facility upgrade represents advanced environmental engineering design capable of removing phosphorus and ammonia to extremely low levels. The upgraded facility removes significantly more pollutants from the influent wastewater while using approximately 14% less electrical energy and 40% less chemicals than old facility. Project received the Engineering Excellence award from American Council of Engineering Companies (ACEC) of Maine. Read more.


Articles of Interest
Innovative Urine Harvesting Pilot Project details
Mattabassett WWTF Upgrade Improves Water Quality of Long Island Sound details
Nitrogen Removal Upgrades at Durham and Dover Wastewater Treatment Facilities Improves Great Bay Water Quality details
Phosphorus Control at Leominster WWTF Cleans up North Nashua River details
WWTF Upgrade Achieves Stringent Phosphorus and Zinc Goals details
Wright-Pierce Leads Way in Watershed Protection From Nitrogen Loading details
Minimizing CSOs details
Public-Private Strategy a Success - Jady Hill details
Impact of Climate Change on Wastewater Treatment Facilities details
Wastewater Pipe Condition and Assesment details
Asset Management Key to Financial Viability of Water and Wastewater Utilities details
Protecting Long Island Sound and Saving the Rate Payers Money details
CT DEP Sets More Stringent Interim Phosphorus Limits details
Infrastructure Sustainability details
Wastewater Urine Reuse details
FCC Narrowbanding Mandate details
Wastewater Sludge Dewatering details
Trenchless Pipeline Installation in Newport, RI details
Nitrogen- Its Fate as it Moves Through the Watershed details