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LakeQuality

How Clean Is Oconomowoc Lake Site?

Oconomowoc Lake Site is among the cleanest lakes in Wisconsin. It received a water quality grade of A (Excellent) based on EPA monitoring data. Water clarity (Secchi depth): 39.4 ft. Phosphorus: 13.8 µg/L. Trophic State Index: 33.

Cleanliness Snapshot

MetricOconomowoc Lake SiteWisconsin avg
Overall GradeAB
Water Clarity (Secchi)39.4 ft
Phosphorus13.8 µg/L<30 = clean
Trophic State Index33<50 = clean

How does Oconomowoc Lake Site compare?

Oconomowoc Lake Site's grade of A matches or beats the Wisconsin state average of B. It ranks #25 of 48 lakes in Waukesha County by water quality score. Multi-year monitoring data shows water quality is improving based on 7 years of records.