Demonstration of several water quality testing methodologies and sensors as part of the Resilient Cities workshop - Presented by Pieter van Boheemen at EID, Rio de Janeiro, May 12 2016
2. Thursday - Water
Time Topic / Activity
10:00 – 11:00 Kick off water sensors day
11:00 – 13:00 Building sensors
13:00 – 14:00 Lunch break
14:00 – 16:00 Field work
16:00 – 17:00 Team updates
11. Forel-Uil scale
• 1 - 5 Indigo blue to greenish blue
• Low nutrient levels, low biomass, phytoplankton
• 6-9 Greenish blue to bluish green
• Algae + dissovled matter & sediment
• Typical near open sea
• 10 - 13 Greenish
• Coastal water with increased nutrients & algae
• Contains minerals and dissolved organic material
• 14 - 17 Greenish brown to brownish green
• High nutrient and algae concentrations
• Typical near-shore
• 18 - 21 Brownish green to cola brown
• Extremely high acid concentration, typical for rivers
12. • Measure pH
• Can indicate industrial discharges
Acidity
19. • Needed for healthy water life
• Can be harmful if they exceed a certain
concentration.
• For example, excessive nitrogen or
phosphorous can indicate pollution
from fertilizer runoff.
Nutrients
20. • From failing septic systems,
inadequately managed animal waste,
or inadequately treated sewage
• Indicator of bacterial presence
• poses a threat to human health.
• Ammonia can also be present due to
water polluted with domestic sewage.
Bacteria
http://oasisdesign.net/water/quality/testing.htm
21. • Near mines
• test levels of mercury and other
heavy metals.
Toxic metals
22. A) Collect
B) Dissolve in baby oil
C) Dilute / Measure
Oil
https://publiclab.org/wiki/oil-testing-kit