ENSC 2001 Lecture Notes - Lecture 10: Saltwater Intrusion, Urban Runoff, Water Purification

• School: Carleton University
• Department: Environmental Science
• Course: ENSC 2001
• Professor: Quentin Gall

Document Summary

Point sources are discrete, confined and more readily identifiable. Common sources: landfills, discharge from wastewater treatment, discharge from industries, power plants, storm water runoff etc. Nonpoint sources are difficult intermittent and hard to specifically identify. Causes of nonpoint pollution often regional cumulative and compound. Common sources: urban runoff (industrial runoff but can also be in rural areas), Build: containment ditches, settling ponds, natural filtration systems (move that water through and filter it) Ground water pollution is a big concern: water purification plants. Subsurface: human activity for example, under ground mining that chemicals can get in the groundwater, or underground storage tanks of rupture and leaked material, water can also be polluted from waster disposals. Lateral saltwater intrusion result from over-pumping of ground water near coastal areas and lets saltwater migrates and intrudes through the well if you have over-pumping. Salt water contamination of ground water can also result from marine flooding of the coastal surfaces.