This agreement provides funding to city of canandaigua to implement its project to reduce total trihalomethane (TTHM) concentration in public drinking water from the city of canandaigua water…

The Environmental Protection Agency (EPA) Region 2 awarded the City of Canandaigua, New York a $1.75 million Cooperative Agreement under the Congressionally Mandated Projects program (CFDA 66.202) on October 1, 2025, to implement infrastructure improvements for reducing total trihalomethane (TTHM) concentrations in the city's public drinking water system. The project, authorized under the 2024 Consolidated Appropriations Act, involves the installation of aeration equipment in two existing 4.5 million-gallon concrete water storage tanks, including a mixer, three floating spray units, a blower system, and associated roof ventilation. The equipment package will be supplemented by construction of a new control building to house system controls and power supply equipment, as well as installation of new electrical conduit and field disconnects. A qualified installer will oversee equipment placement and testing through water sampling to ensure manufacturer performance guarantees are met.

The project aims to reduce TTHM concentrations, which are carcinogenic byproducts formed when chlorine disinfectants react with naturally occurring organic matter in drinking water. The aeration-based removal approach encourages volatilization of these harmful compounds out of the water supply, thereby protecting public health. The project is scheduled for completion by May 1, 2027, with no subawards identified in this assistance agreement. The City of Canandaigua will manage all work through contracts with qualified general, electrical, and equipment installation contractors.

This agreement provides funding to city of canandaigua to implement its project to reduce total trihalomethane (TTHM) concentration in public drinking water from the city of canandaigua water treatment plant.as directed in the 2024 consolidated appropriations act. Activities:the TTHM removal project involves the addition of a mixer, three floating spray units, and a blower to two existing 4.5 million gallon concrete water storage tanks. Additional ventilation will also be added to the roof to allow adequate airflow. This equipment is supplied in a package by the manufacturer of TTHM removal systems. Construction will be conducted by a qualified installer to identify the appropriate locations for each piece of equipment. Performance will be tested after installation through water sampling to meet manufacturer's guarantee. A new building will be constructed to house the TTHM removal system controls and power supply equipment. This work shall be conducted by a general and electrical contractor under respective contracts. Associated work for the controls also involves new electrical conduit and field disconnects to each of the tanks. Subrecipient:no subawards are included in this assistance agreement.outcomes:the intended outcome of the project aims to reduce total trihalomethane (TTHM) concentration in public drinking water from the city of canandaigua water treatment plant. Total trihalomethanes (TTHMS) are a group of four chemical compounds (chloroform, bromoform, bromodichloromethane, and dibromochloromethane) formed as a byproduct of water disinfection, and are a potential health concern. These chemicals are produced when chlorine, used to disinfect drinking water, reacts with naturally occurring organic matter in the water. The removal of total trihalomethane is accomplished through the aeration of storage tanks which encourages volatilization of TTHMS out of the water. The removal of trihalomethanes (THMS) from drinking water offers several health benefits to the residents of the city of canandaigua such as reducing the risk of various health problems, including increased risk of cancer, reproductive problems, and damage to the liver, kidneys, and central nervous system.