approved water
41Water quality — A rosette sampler is used to collect samples in deep water, such as the Great Lakes or oceans, for water quality testing. Water quality is the physical, chemical and biological characteristics of water.[1] It is a measure of the condition of… …
42Water supply and sanitation in South Africa — After the end of Apartheid South Africa s newly elected government inherited huge services backlogs with respect to access to water supply and sanitation. About 15 million people were without safe water supply and over 20 million without adequate …
43Water supply and sanitation in Pakistan — Drinking water qualityGenerally, water pressure is low in Pakistani supply systems. Together with leaky pipes, this has led to infiltration of contaminated water. As a result of sewage and industrial waste, which leaked into drinking water… …
44Water resources — A natural wetland Water resources are sources of water that are useful or potentially useful. Uses of water include agricultural, industrial …
45Water Buffalo — This article is about the domesticated Water Buffalo. For its endangered wild ancestor, see Wild water buffalo. For the wild African species, see African buffalo. For other uses, see Water buffalo (disambiguation). Water Buffalo Water buffalo cow …
46Water cannon — A water cannon is a device that shoots a high pressure stream of water. Typically, water cannons can deliver a large volume of water, often over dozens of metres / hundreds of feet. They are used in firefighting and riot control. Most water… …
47Water softening — A water softener reduces the dissolved calcium, magnesium, and to some degree manganese and ferrous iron ion concentration in hard water.These hardness ions cause three major kinds of undesired effects. Most visibly, metal ions react with soaps… …
48Water resources of the People's Republic of China — The Water resources of China are affected by pollution, contamination and regional scarcity. Water resources management is fragmented among various agencies and levels of government. Water quality The quality of groundwater or surface water is a… …
49Water meter — A typical residential water meter A water meter is a device used to measure the volume of water usage. This article provides an overview of technical aspects of water meters. The worldwide prevalence of metering as well as its economic benefits… …
50Water supply and sanitation in Haiti — Haiti faces key challenges in the water supply and sanitation sector:Notably, access to public services is very low, their quality is inadequate and public institutions remain very weak despite foreign aid and the government s declared intent to… …
