Bill > HB05749

This bill establishes a comprehensive framework for implementing nitrogen-reducing septic systems in environmentally sensitive areas to mitigate nitrogen pollution in water bodies. Starting October 1, 2026, the bill mandates that all new residential and commercial developments in designated environmentally sensitive areas must install nitrogen-reducing septic systems that meet performance standards set by the Department of Public Health. Additionally, any renovation or expansion of existing structures that increases wastewater discharge by 25% or more will require an upgrade to these advanced systems. When a conventional septic system fails or needs replacement in these sensitive areas, property owners must install a nitrogen-reducing system. The bill requires the Department of Public Health to establish nitrogen-discharge limits by March 1, 2026, and the Department of Energy and Environmental Protection to designate environmentally sensitive areas by the same date. Installation of these systems must be performed by licensed professionals, and property owners are required to conduct annual inspections and maintenance. Local health departments will maintain a database of installed systems and conduct periodic compliance checks. The bill also allows municipalities to enact additional local ordinances requiring nitrogen-reducing septic systems in areas where nitrogen pollution poses a risk to water quality.

Agriculture and Natural Resources

Environment Committee (Joint)

https://www.cga.ct.gov/asp/cgabillstatus/cgabillstatus.asp?selBillType=Bill&bill_num=HB05749&which_year=2025