The study looked at pollution levels in streams in New Jersey, focusing on fecal coliform and total phosphorus. These pollutants were found to be higher than the state's water quality standards in certain areas. The main sources of pollution were nonpoint sources like stormwater runoff and point sources like sewage systems. The researchers developed Total Maximum Daily Loads (TMDLs) to manage these pollutants, considering both point and nonpoint sources. The goal was to identify and address areas where pollution levels exceed safe limits to protect water quality.