Tomhannock Water Transmission Line Replacement

The City is committed to investments in the City's water infrastructure network, including the replacement of century old water lines between the Tomhannock Reservoir and the Water Treatment Plant.

Access to clean drinking water is vital for local families, businesses, and the environment. For the last 55 years, the City of Troy has been the primary source of clean water for 135,000 customers in nine communities across three Capital Region counties (Albany, Rensselaer and Saratoga).

Beginning in 2021, the administration kicked off a major water infrastructure project to preserve the reliability of the City's water infrastructure network for another 200 years: replacement of vital water transmission lines between the City's Tomhannock Reservoir and the Water Treatment Plant.

The first phase of the project, completed spring 2023, involved installation of two 36-inch diameter pipes totaling 43,000 linear feet (over 8 miles). The second phase will extend these transmission mains all the way to the Tomhannock Reservoir.

The project is funded through a $10M Intermunicipal Water Infrastructure Grant (IMG) and $29.34M in short-term market-rate financing (SRF) from New York State Environmental Facilities Corporation (EFC).

About the Tomhannock Reservoir

The City of Troy's Tomhannock Reservoir is a 5.2 mile long, man-made reservoir located approximately 6.5 miles northeast of the Collar City.

It provides over 21 million gallons of clean water daily to 135,000 customers in Troy and nine communities across three Capital Region counties (Albany, Rensselaer, Saratoga), including the City of Rensselaer, the Towns of East Greenbush, North Greenbush, Brunswick, Schaghticoke, Poestenkill, Halfmoon, and the Villages of Waterford and Menands.


  • Mayor Madden Announces Start of Major Infrastructure Project to Replace Water Transmission Lines Between Tomhannock Reservoir and City's Water Treatment Plant