About GLSD
The Green Lake Sanitary District, which is located in Green Lake County, Wisconsin, was established in 1964 and includes all of the existing areas around the lake (excluding the City of Green Lake). The District was formed as a means to protect Big Green Lake and its associated resources with respect to sanitation and related land, air and water quality matters. In addition to coordinating solid waste collection in parts of different Townships, the District also oversees the treatment of wastewater from just over 1,400 homes. Of the District’s 2,200+ total tax parcels, there are approximately 800 vacant lots in addition to the 1,400 lots with homes. Of the 1,400 homes, just under 1,000 are served by sewer and the remaining 400 are served by private on-site wastewater treatment systems (septic and holding tank systems). Also included...
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County K Marsh Carp Barrier Replacement Project
The GLSD is excited to announce the receipt of over $260,000 in State and Federal grants to replace the County K Marsh (CKM) carp barrier and undertake habitat & shoreline improvements within the marsh. Believed by the DNR and the Lake Management Team the...
GLSD Watershed Projects Fund at Oshkosh Community Foundation
The GLSD operates as both a sewer utility and as a lake district. Through the use of our residents’ tax dollars, we provide services including funding agricultural best management practices in the watershed to improve water quality entering the lake, purchasi...
GLSD Nears Completion of WPDES Construction Project
In August of 2025, the GLSD began construction on DNR-mandated phosphorus compliance upgrades at our Wastewater Treatment facility on County Rd TT and on our new parcels along County Rd T in the Town of Princeton. The construction of a new lift station, stora...
Latest News
The GLSD Welcomes New Staff
WATERSHED COORDINATOR – HANNAH VORRIE(Soon To Be Hannah Niewoehner (Knee-Wah-Ner)Hannah was hired t...
Lake trout release 2022
On April 4th, GLSD and DNR staff moved approximately 30,000 lake trout from our fish rearing facili...
Results of 2016-2020 Lake Study
In June 2021, a detailed study of Green Lake was completed by the US Geological Survey, Michigan Te...