On the Eastern Shore of Maryland, an EIP analysis of state water quality monitoring data shows that levels of phosphorus and algae remain stuck at high levels with no improvement between 2010 and 2020, and some backsliding. A similar lack of improvement in phosphorus and algae levels can be seen over a longer period, 2003 to 2020, while nitrogen pollution declined slightly, according to data from 18 water quality monitoring stations in Bay tributaries.