Water Flashcards
What documentation is required for feature 37 Drinking Water Promotion?
Performance Test (Part 1) Letter of Assurance from the architect and on-site spot check (Part 2) Operations Schedule (Part 3)
Exposure to even minute amounts of _______ has been linked to developmental delays and deficits in learning abilities in children as well as high blood pressure and kidney problems in adults
certain metals such as lead and mercury
The quality of the US surface water relies largely on what?
The Clean Water Act of 1974
The presence of _________ suggests that the water may contain more dangerous pathogens, including: bacteria, viruses, and protozoa.
Exposure to these pathogens can lead to adverse gastrointestinal effects such as diarrhea, committing, nausea, and cramps.
Coliforms
Removing what from water may also remove harmful pathogens such as protozoa?
Turbidity
What systems and/or filters can remove dissolved metals?
Reverse Osmosis systems (RO)
Kinetic Degradation Fluxion filters (KDF)
Contaminants like lead, arsenic, glyphosate, atrazine, and microbes that are naturally occurring or inadvertently introduced into the water can _________.
pose serious health threats
What common disinfectants can lead to disinfectant byproducts such as trihalomethane (THMs) and halo acetic acids (HAAs), as well as N-Nitrosodimethylamine (NDMA) which can cause cancer?
Chlorine and Chloramine
How much of the human body is comprised of water?
More than 2/3
How much water does the Institute of Medicine (IOM) recommend for women and men to consume per day from all sources?
Women - 2.7 L
Men - 3.7 L
The rate at which inorganic metals leaches into drinking water sources is affected by what?
changing industrial practices and temporal variation in temperature, pH, and weather
What are 3 technologies prescribed to maintain high water quality?
carbon filters
sediment filters
UV sanitization
This is an aesthetic mottling of the teeth caused by excessive exposure to fluorine compounds
Fluorosis
Exposure to what kind of contaminants in drinking water have been associated with a range of adverse health effects including cancer, immune deficiencies and nervous system difficulties?
Organic contaminants
What feature sets maximum limits for organic contaminants like PCBs, benzene and styrene?
What filters are effective in removing these and other harmful chemical substances?
32 Organic Contaminants
Activated Carbon Filters