Water Quality Monitoring

Various water quality contaminants are closely tied to many of the BUI’s (Beneficial Use Impairments) listed for the Milwaukee River Estuary, particularly those related to algal blooms and exposure to bacteria and other pathogens. Poor water quality and excessive nutrient loading adversely affect benthic organisms, fish, wildlife, and plankton. Eutrophic conditions caused by excessive nutrient levels often lead to large algal blooms, which can result in low dissolved oxygen levels, fish kills, and poor aesthetics. Influxes of pathogens into the system, particularly during high flow events, can have a direct effect on fish and wildlife populations and are a major concern for safe public enjoyment of affected waterbodies.

The Program and partners monitor water quality in the County to detect baseline low-flow conditions and to assess changes following rain events.  The parameters include:
Water Quality Parameters

Continuous Water Quality Monitoring System

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Probes are protected by PVC pipe

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Water Quality Monitoring
Ozaukee County Planning and Parks Department will continue monitoring the water quality systems at Ulao Creek and look for additional funding, specifically for Ulao and Mole Creeks due to current restoration work there

A combination of the Milwaukee Riverkeeper monitoring data, Ozaukee County data, and other sources will be useful for future water quality improvement planning by providing baseline and highlighting potential pollution hotspots, significant load contributions and trends overtime. 
View the Final Water Quality Report Submitted to the USEPA: