Water Supplies and Reservoirs

Chemical contamination of water supplies.

Man-made organic chemicals have been found in drinking water for many years. Their numbers and varieties increase as our analytical capabilities improve. The identified chemicals comprise 10 to 20% of the total organic matter present. These are volatile or low molecular weight compounds which are easily identified. Many of them are carcinogenic or mutagenic. Chlorinated compounds have been foun...

Adding fluoride to water supplies.

Rising temperatures and dwindling water supplies

In this paper we discuss the results of a survey on the perception of climate change in the 14 “tourist zones” (as defined by the Spanish Statistical Institute, INE) that stretch from the French border to Gibraltar alongside the Spanish Mediterranean coast, including the Balearic Islands. Our sample consisted of 1014 telephone interviews stratified according to the number of tourists staying in...

The water supplies and water requirements of the modern state.

This is a vast subject and I cannot hope to do more than touch the fringes of it in the short space allotted to me. Clearly, water is the most important and widely used raw material of all. It is vital in every sense of that word. I t is a primary requirement of vegetable life and of animal life (and here I include human life). I need not stress its many domestic uses. Water is essential in pro...

Bacterial nitrification in chloraminated water supplies.

Nitrifying bacteria were detected in 64% of samples collected from five chloraminated water supplies in South Australia and in 20.7% of samples that contained more than 5.0 mg of monochloramine per liter. Laboratory experiments confirmed that nitrifying bacteria are relatively resistant to the disinfectant. Increased numbers of the bacteria were associated with accelerated decays of monochloram...