Putnam Water Filtration Plant Upgrades

Project Highlights

  • $19 Million Clearwell and Pump Station Upgrade
  • New Piping and Pump Systems
  • Condition Assessment of Pumps and Motors
  • Electrical and Instrumentation Improvements
  • Structural Design of Clearwell Tank & Tiered Retaining Wall
  • 2013 ACEC/CT Engineering Excellence Award

A High Profile Makeover

Aquarion Water Company (AWC) of Connecticut owns the Putnam Water Filtration Plant (WFP), which supplies water to more than 50,000 residents in the Greenwich area. As part of a capital improvements plan, AWC invested in treatment plant upgrades to replace aging structures, and improve service reliability, water quality, and public health and safety.

Greater Water Reliability

This $19 million upgrade included replacement of the original 1.0 million gallon treated water storage clearwell, which was constructed in 1927, with a new 3.2 million gallon one that meets the needs of the modern system and utilizes current design standards. Tighe & Bond provided engineering services for the design, permitting and construction of the new clearwell and filter backwash pumping system, as well as the associated piping improvements.

The new clearwell provides AWC and the Town of Greenwich with greater water supply reliability for domestic and fire protection uses. It also meets current state health department design standards. Our team took great care to make sure that the design meshed with the surrounding neighborhood and satisfied the residents.

Teamwork & Collaboration Define Success

Tighe & Bond regularly provides engineering services to AWC, which includes a unique design/build partnership with C.H. Nickerson & Company, a general contractor based in Torrington, CT. Our close collaboration with AWC and this contractor was essential to implementing long term capital improvement plans at the 20 million gallon per day (mgd) Putnam Water Filtration Plant (WFP), and the 8 mgd Mianus WFP. Both plants are located in Greenwich, CT, with the Putnam WFP representing the largest water source for the Greenwich area.

In 2013, the American Council of Engineering Companies of Connecticut (ACEC/CT) presented Tighe & Bond with an Engineering Excellence Award for this high profile project.

Services Snapshot

Besides design, permitting and construction administration services, we provided a conditions assessment of pumps and motors. We also provided structural engineering for the clearwell tank and a tiered retaining wall, as well as electrical and instrumentation improvements.