Sewage waste can contaminate water supplies, rendering them hazardous for recreational and human use. It can also clog drainage systems, which increases the risk of flooding and the spread of illness. 

Congested power lines can lead to increased risk of power outages and system failures, compromising the reliability of the electrical grid. Also they can drive up energy costs and hinder the integration of new energy sources, limiting the grid's capacity to meet growing energy demands. 

Coastal debris harms marine life by entangling animals and being ingested, leading to injury or death. It also pollutes beaches, posing health risks to humans and reducing the aesthetic and economic value of coastal areas.