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water forensics

water forensics. Let’s talk about “Water”. Charmlee. Yosemite. Yosemite. Charmlee. Franklin Canyon. Ocean (Beach). Los Angeles’ water is super clean – the LADWP is doing their work! Contamination is less than 15 parts per billion by regulation

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water forensics

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  1. water forensics

  2. Let’s talk about “Water”

  3. Charmlee Yosemite

  4. Yosemite Charmlee Franklin Canyon Ocean (Beach)

  5. Los Angeles’ water is super clean – the LADWP is doing their work! Contamination is less than 15 parts per billion by regulation Water can still be contaminated between the plant and the sink Old plumbing can deposit lead in your water Our water sources are exposed to chemical and animal wastes – are we exposed to that, too? Bottled Water: Tastes Better? Is Cleaner? Is More Exotic? Comes in a Bottle Tap Water: Is Cheaper

  6. Human Consumption or Related Use – 17.1 % • Faucet use – 15.7 % • Dishwasher – 1.4 % • Human Contact Only – 18.5 % • Shower – 16.8 % • Bath – 1.7 % • Non-Human Ingestion or Contact Uses – 64.3% • Toilet – 26.7 % • Clothes Washer – 21.7 % • Leaks – 13.7 % • Other – 2.2 % • ----------------------------------------------------------------- • (The National Academic press, 2008)

  7. Demo

  8. TDS (TOTAL DISSOLVED SOLID) CONDUCTIVITY AMMONIA COPPER ALKALINITY CHLORIDE CHLORINE NITRATE IRON HARDNESS

  9. Guess what A, B, C, D, E, and F are (Bottled water, Charmlee water, Franklin Canyon water, Tap water, and Yosemite water) • Evaluate why • A • B • C • D • E • F

  10. Triple wash your tubes with the water (use very small amount) you are testing before you conduct your experiment. • Triple wash your tubes with distilled water after each experiment • No cross contamination: Do not use same tube for different waters. Always use clean tubes. • Do not eat the tablets!!!

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