1. Ch. 11.4 pgs. 285-289 Using Water Wisely January 26, 2016
IN: With your group, discuss the different pictures you took. Write down each of yours on a sticky note.

2. Terms to Learn & Objectives
point-source pollution nonpoint-source pollution
sewage treatment plant septic tank
Describe the ways in which we use water.
Describe the stages of treatment for water at a sewage treatment plant.
Discuss various strategies to increase water sustainability.

3. Where Does it Go? Where would you say, based on our
activity, that most
of the water is used?

4. Where Does it Go?
Sewage treatment plants are factories that clean the waste materials out of water that comes from the sewer or drains.
Primary Treatment removes
solid material such as paper
and plastic or oil on top.
Secondary Treatment aerates
the water and it is treated
with bacteria and chlorine.
Clark County Water Reclamation District reclaims 90 million gallons of water each year for credit.

5. Where Does it Go?
Point-source Pollution: comes from one particular point, such as a sewer pipe.
Nonpoint-source pollution: comes from runoff from general sources.

6. What’s goin’on? Due to population increases
and climate changes, Lake Mead
is shrinking.
At 1050’ we will lose
intake valve #1.

7. The Southern Nevada Water Authority
Patricia Mulroy once led the SNWA and began the battle for water in Southern Nevada.
She recently retired,
John Entsminger
now leads the way.

8. The Plan SNWA has plans to build a pipeline to Las
Vegas from the aquifer
in White Pine county.
Water Grab

9. The Plan
The “Third Straw” was opened in September, 2015 drawing water from the bottom of Lake Mead.

10. The Plan Conservation, including watering restrictions for landscapes
Water Smart campaign to increase public awareness.
Landscape rebates offering $2.00/sq ft. of sod that is removed.

11. OUT: Fill in your model