What dangers can there be in drinking water other than microorganisms? What causes white deposit on showers and bathroom walls?
Problems related to water quality and drinking water What are drinking water standards? Drinking water standards for packaged and non packaged water are as follow: Sr. No. Impurity Non Packaged Packaged IS desirable limit (As per IS 10500) USEPA Maximum contaminant level WHO guideline value IS desirable limit (As per IS 14543:2004) 1 Colour, Hazen units 5 NA 15 true colour units 2 2 Odour Agreeable 3 threshold odour number Not offensive Agreeable 3 Taste Agreeable NA Not offensive Agreeable 4 Turbidity, NTU 5 5 5 2 5 Dissolved solids, mg/l 500 500 1000 500 6 Total hardness, mg/l (as CaCO3) 300 NA 500 NA 7 Ca, mg/l 75 — — 75 8 Mg, mg/l — — — 30 9 PH value 6.5 8.5 6.5 8.5 6.5 8.5 6.5 8.5 10 Manganese, mg/l 0.1 0.05 0.1 0.1 11 Chlorides, mg/l 250 250 250 200 12 Sulphates, mg/l 200 250 400 200 13 Nitrates, mg/l 45 10 10 45 14 Fluorides, mg/l 1.0 2.0 1.5 1.0 15 Phenolic compounds, mg/l 0.001 0.001 0.001 0.001 16 Mercury, mg/l 0.001 0.002 0.001 0.001 17 Cadmium, mg/l 0.01 0.005 0.003 0.
Related Questions
- Thanks anyway but only one more wall question. What causes the large white spots on some brick walls and will this brick do that?
- What dangers can there be in drinking water other than microorganisms? What causes white deposit on showers and bathroom walls?
- What causes white deposit on showers and bathroom walls?
