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water quality

help me.
Across
What they put in public swimming pools
water held underground in the soil or in pores and crevices in rock.
refers to the chemical, physical, biological, and radiological characteristics of water
is a measure of hydrogen ion concentration; a measure of the acidity or alkalinity of a solution
the degree or intensity of heat present in a substance or object, especially as expressed according to a comparative scale and shown by a thermometer or perceived by touch
the concentration of dissolved salts in water etc., usually expressed in parts per thousand by weight
refers to microscopic bubbles of gaseous oxygen
is the cloudiness or haziness of a fluid caused by large numbers of individual particles that are generally invisible to the naked eye, similar to smoke in air
the action of purifying a liquid by a process of heating and cooling
the process of eroding or being eroded by wind, water, or other natural agents
Down
infection is an intestinal infection marked by abdominal cramps, bloating, nausea and bouts of watery diarrhea
water in or taken from the sea
a process by which a solvent passes through a porous membrane in the direction opposite to that for natural osmosis when subjected to a hydrostatic pressure greater than the osmotic pressure
Drinking water
a process by which molecules of a solvent tend to pass through a semipermeable membrane from a less concentrated solution into a more concentrated one, thus equalizing the concentrations on each side of the membrane.
is water that has high mineral content