Drinking Water Quality Drinking water Potable Water is

Drinking Water Quality • Drinking water (Potable Water) is purified by • storage in reservoir (suspended matter settles) • treated by sand filters • activated charcoal • addition of chlorine © Brooks/Cole Publishing Company / ITP Water Resources and Water Pollution by Paul Rich

Water Treatment Stages Sequence of stages in treating our drinking water: 1. Screening 5. Sedimentation 2. Aeration 6. Dechlorination 3. p. H correction 7. Filtration 4. Flocculation 8. Disinfection 9. p. H adjustment isis. csuhayward. edu/alss/Geography/ mlee/geog 4350/4350 c 4 f 01. ppt

Municipal Water Purification Plant

Sewage or Wastewater Treatment �Sewage or wastewater is composed of sewage or wastewater from: �Used water and toilet wastes �Rainwater �Industries �Livestock wastes

Wastewater Treatment Waste Water Treatment Plants: • treat larger volumes of municipal or industrial waste. Septic Tanks: • treat small volumes of waste How Septic Systems Work

Home Septic Systems § No Chlorine used § Uses a settling tank to settle the solids § Lets waste water percolate into the soil to decompose

Clean Water Act �The Clean Water Act OF 1972 �Regulates the discharges of pollutants in the US rivers and streams Environmental Science ENSC 2800 - Pollution in the Bay-Delta

Safe Drinking Water Act �The Safe Drinking Water Act (1974) was established to protect the quality of drinking water in the U. S �Water treatment plants �Well water Environmental Science ENSC 2800 - Pollution in the Bay-Delta

Is Bottled Water the Answer? �Bottled water is not regulated and cost more than tap water � 1. 4 million metric tons of plastic bottles are thrown away. �Plastic bottles come from oil that can fuel 100, 000 cars each year

Water Conservation Methods �Repair leaking faucets and underground pipes �Landscape year with plants that use little water �Use drip irrigation in your yard and crops

Water Conservation Methods �Use water saving toilets, showerheads, dish washers �Purify and reuse water for houses and gardens �Rain Barrels