How much water should women and men drink?
W - 2.7 L
Men - 3.7 L
How many deaths annually attributed to unsafe water?
2 million
30 - Fundamental Water Quality - What are the two major indicators for the presence of other contaminants? What are their limits?
Turbidity (<1.0 NTU)
Total Coliforms (0)
31 - Inorganic Water Cotaminants/Dissolved Metals (6) & Filter
CLAMAN: Copper Lead Arsenic Mercury Antimony Nickel
Reverse Osmosis or KDF
32 - Organic Pollutants/Water Contaminants (8), Filter and Health Impacts (3)
SBEV TXT PCB
Styrene Benzene Ethylbenzene Vinyl
Toluene Xylenes TCE
PCBs
Activated carbon filter
cancer immune deficiencies nervous system damage
33 - Ag contaminants: what % of surface streams and groundwater contaminated in the ’90s
all streams in ag/urban/mixed use areas; 30-60% of groundwater
33 - Ag contaminants - water must meet limits for what 4 chemicals and which fertilizer?
Atrazine
Simazine
Glyphosate
2,4-D
Nitrates less than 10 mg/L
34 - Public Water Additives: Two disinfectants?
chlorine
chloramine
34 - Public Water Additives: Two disinfectant byproducts (cancer & kidney damage)
trihalomethanes (THM)
halocetic acids (HAAs)
34 - Public Water Additives: what are the limits for flouride?
less than 4.0 mg/L
35 - Periodic Drinking Water Quality Testing: how often is testing done and reports submitted? what tested for (4)?
tested quarterly reports submitted annually, kept for 3 years
CLAM: Copper, Lead, Arsenic, Mercury
36 - Water Treatment - What are the 4 types of contaminants and removal technique for each?
organic compounds / activated carbon
sediments / filter suspended solids
microbial / UVGI or NSF filter
Legionella / hazard analysis
37 - Drinking Water Promotion - what affect taste of water? (8)
SMAZICS -TDS
Sodium Manganese Aluminum Zinc Iron Chloride Sulfate
Total Dissolved Solids
37 - Drinking water Promotion - Where should water dispensers be located?
100 ft of all parts of regularly occupied space
How often are water dispenser parts cleaned?
daily - mouthpieces, protective guards, basins
quarterly - outlet screens and aerators
Coliform
A microorganism, including bacteria such as E. coli, naturally found in soil, vegetation, and in the intestinal tract of mammals.
Kinetic degradation fluxion (KDF)
Water filter that contains flakes or granules of a copper-and-zinc alloy.
2,4-Dichlorophenoxyacetic acid (2,4-D)
Herbicide that is likely to run off into ground and surface water sources
Part 3: Fluoride of Feature 34, Public Water Additives, requires that the amount of fluoride in a water supply be limited to less than ___ mg/L.
4.0
Reverse-osmosis (RO) filtration system
Water filtration system that uses a semipermeable membrane to filter water
Legionella
A bacterium that is found in freshwater and can cause a serious form of pneumonia called Legionnaires’ disease.
Granular activated carbon (GAC) filtration system
Uses oxygen-treated carbon to chemically bond with the organic contaminants in water.
Microbial cyst
A microorganism in its dormant state that is resistant to typical disinfection methods.
Organic contaminant
A human-made compound or chemical containing carbon atoms that has leached into ground and surface water from industrial activities, such as the production of plastics.
Ultraviolet germicidal irradiation (UVGI)
A sterilization method that uses UV light to break down microorganisms by destroying their DNA.
Simazine
herbicide
Glyphosate
herbicide
kidney and reproductive problems
drift, residues on food crops, and runoff into drinking water sources
Water that is used for cooling towers, boilers, and industrial processes.
Process water
A highly irritating, greenish-yellow gaseous halogen that can be introduced into a water supply as a gas, sodium hypochlorite solution, or calcium hypochlorite solid.
Chlorine
An infectious biological agent such as a bacterium, virus, or fungus that is capable of causing disease in its host.
Pathogen
Atrazine
pesticide
endocrine disruptor and cardiovascular
Inorganic contaminant
An element or compound that may be found in a water supply, occurring from natural sources such as the geology of a location, resulting from human activities such as mining and industry, or leaching into a water supply through outdated or malfunctioning water supply infrastructure.
List techniques used to maintain water quality (3)
carbon filters
sediment filters
UV sanitation
The rate at which inorganic metals leach into drinking water is affected by: (3)
temperature
PH
weather
37 - Drinking Water Promotion documentation (4)
PLOS
Performance test
LOA Architect
Operations Schedule
Spot Check