Cobbs Hill Reservoir | LT2 Compliance Project
The City's reservoirs are mandated to comply with the EPA's "Long Term 2 Enhanced Surface Water Treatment Rule". This section will track the progress of impacts on Cobbs Hill Reservoir.
Background
The safety of our water supply is an essential aspect of human life. The City of Rochester must comply with federal EPA guidelines. Deadline to complete compliance projects are rapidly approaching.
Options for major changes at Highland, Cobbs Hill reservoirs gain focus as study widens - WXXI News | By Brian Sharp Published May 7, 2025
"...something needs to change for the city to be in compliance with tightening federal water safety regulations for open top water storage facilities. Specifically, the rules aim to mitigate the risk of contamination from a pathogen called cryptosporidium."
BIG changes are likely at both the Highland and Cobbs Hill Reservoirs.
A representative from UMNA will serve on the Project Advisory Committee for the City's LT2 Compliance Project.
Surface Water Treatment Rules & LT2 Enhanced Surface Water Treatment Rules
The purpose of the Surface Water Treatment Rules (SWTRs) is to reduce illnesses caused by pathogens in drinking water. The disease-causing pathogens include Legionella, Giardia lamblia, and Cryptosporidium.
The SWTRs requires water systems to filter and disinfect surface water sources. Some water systems are allowed to use disinfection only for surface water sources that meet criteria for water quality and watershed protection.
The Long Term 2 Enhanced Surface Water Treatment Rule addresses the health effects associated with Cryptosporidium in surface water used as a drinking water supply. These guidance documents provide information on the source water sampling monitoring requirements for Cryptosporidium and the treatment requirements for vulnerable surface water supplies based on sampling.
Fact Sheets for LT2 Rule
Long Term 2 Enhanced Surface Water Treatment Rule Fact Sheet (PDF) (4 pp, 44 K, About PDF) EPA 815-F-05-002
LT2ESWTR Source Water Monitoring for Systems Serving At Least 10,000 People Factsheet (PDF)(4 pp, 102 K, About PDF) EPA 816-F-06-017
LT2ESWTR Source Water Monitoring for Systems Serving Less Than 10,000 People Factsheet (PDF)(4pp, 88 K, About PDF) EPA 816-F-06-018
LT2ESWTR Data Collection and Tracking System Factsheet (PDF)(2 pp, 62 K, About PDF) EPA 816-F-06-019
LT2ESWTR Laboratory Factsheet (PDF)(2 pp, 45 K, About PDF) EPA 816-F-06-020
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