eutrophic
adjective
eu·tro·phic yü-ˈtrō-fik 
of a body of water
: characterized by the state resulting from eutrophication compare mesotrophic, oligotrophic
eutrophy
ˈyü-trə-fē
noun 
Example Sentences
Recent Examples on the Web The stated goal is to fix the 150-square-mile lake that has become a eutrophic soup filled with invasive organisms after a century of neglect. 
Brian Maffly, The Salt Lake Tribune, 17 Aug. 2022
Brian Maffly, The Salt Lake Tribune, 17 Aug. 2022 Word History
Etymology
probably from German Eutroph eutrophic, from Greek eutrophos well-nourished, nourishing, from eu- + trephein to nourish
First Known Use
1928, in the meaning defined above