Total Maximum Daily Load
Relevant Committees
Greater Trinity River Bacteria TMDL Program
The Greater Trinity River Bacteria TMDL Program is a regional water quality partnership led by NCTCOG to implement the state-approved Implementation Plan (I-Plan) for reducing bacteria impairments throughout the Greater Trinity River watershed. The program brings together local governments, utilities, state agencies, researchers, and nonprofit organizations to improve water quality, protect recreational uses, and restore impaired streams through monitoring, education, infrastructure improvements, and watershed management activities.This regional framework now covers 25 TMDLs and multiple watersheds, including Mountain Creek tributaries, Sycamore Creek, North Fork Fish Creek, North Fork Cottonwood Creek, and Dry Branch Creek.
The program is primarily funded through TCEQ contracts supported by Clean Water Act funding and is implemented through a collaborative stakeholder structure coordinated by NCTCOG. Key stakeholders include TCEQ and EPA as regulatory and funding partners; cities, counties, river authorities, and water districts that own and operate stormwater and wastewater infrastructure; research organizations that provide technical support; and nonprofit and community organizations that support outreach, stewardship, and public engagement. These groups are stakeholders because they either contribute bacteria loads, manage infrastructure and land uses that affect water quality, collect and evaluate monitoring data, or are responsible for implementing solutions needed to achieve water quality standards.
2025 TMDL Annual Program Summary
