Master Specification User Guide - Great Lakes Water Authority

A look into GLWA’s water quality standards, testing, and treatment practices.

Learn more about how GLWA’s Water System works.

Learn more about how GLWA’s Wastewater system works.

Manage your water costs and access financial support.

See GLWA’s ongoing investments that strengthen infrastructure and support regional growth.

How GLWA is preparing for regional challenges through strategic planning and innovation.

A look into GLWA’s research leadership, pilot programs, and forward-thinking water solutions.

An overview of GLWA’s role, mission, and operations, explaining the how and why behind our water and wastewater services.

Meet the individuals behind GLWA, including leadership, staff, and the teams that drive daily operations.

An introduction to GLWA’s treatment plants and operational sites.

Discover how partnering with GLWA helps communities share knowledge, access resources, and strengthen regional water systems.

Information for current and prospective vendors, including procurement processes, requirements, and opportunities.

A resource center providing financial documents, agreements, and investment-related materials.