Engineering
Geothermal systems are becoming an increasingly important source of clean and, above all, baseload-capable energy. But the wells, which can be several thousand meters deep, are risky, and things can sometimes go wrong. Fraunhofer ...
Jan 3, 2022
2
92
Robotics
Removing litter from oceans and seas is a costly and time-consuming process. As part of a European cooperative project, a team at the Technical University of Munich (TUM) is developing a robotic system that uses machine learning ...
Dec 29, 2021
0
39
Energy & Green Tech
Anyone using a cellphone, laptop or electric vehicle depends on lithium. The element is in tremendous demand. And although the supply of lithium around the world is plentiful, getting access to it and extracting it remains ...
Sep 8, 2021
0
749
Computer Sciences
Because corporations and governments rely on computers and the internet to run everything from the electric grid, healthcare, and water systems, computer security is extremely important to all of us. It is increasingly being ...
Jun 23, 2021
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12
Energy & Green Tech
Washington University researchers have developed a filter that treats wastewater and also generates electricity—an advance that could reshape energy use at treatment plants.
Jun 3, 2021
1
11
Security
A top Biden administration official says the government is undertaking a new effort to help electric utilities, water districts and other critical industries protect against potentially damaging cyberattacks.
Apr 2, 2021
1
4
Engineering
business-as-usual planning principles—especially as these disasters tend to disproportionately affect disadvantaged populations, increasing inequality in Australia.
Mar 22, 2021
0
9
Energy & Green Tech
Researchers at UniSA have developed a cost-effective new technique to monitor soil moisture using a standard digital camera and machine learning technology.
Mar 15, 2021
0
157
Robotics
If you've ever watched Planet Earth, you know the ocean is a wild place to live. The water is teeming with different ecosystems and organisms varying in complexity from an erudite octopus to a sea star. Unexpectedly, it is ...
Feb 26, 2021
2
39
Security
Jolted by a sweeping hack that may have revealed government and corporate secrets to Russia, U.S. officials are scrambling to reinforce the nation's cyber defenses and recognizing that an agency created two years ago to protect ...
Feb 19, 2021
0
14
Tap water (running water) is part of indoor plumbing, which became available in the late 19th century and common in the mid-20th century.
The provision of tap water requires a massive infrastructure of piping, pumps, and water purification works. The direct cost of the tap water alone, however, is a small fraction of that of bottled water, which can cost from 240 to 10,000 times as much for the same amount.
The availability of clean tap water brings major public health benefits. Usually, the same administration that provides tap water is also responsible for the removal and treatment before discharge or reclamation of wastewater.
In many areas, chemicals containing fluoride are added to the tap water in an effort to improve public dental health. This remains a controversial issue in the health, freedoms and rights of the individual. See water fluoridation controversy.
Tap water may contain various types of natural but relatively harmless contaminants such as scaling agents like calcium carbonate in hard water and metal ions such as magnesium and iron, and odoriferous gases such as hydrogen sulfide. Local geological conditions affecting groundwater are determining factors of the presence of these substances in water.
Occasionally, there are health concerns regarding the leakage of dangerous biological or chemical contaminating agents into local water supplies when people are advised by public health officials not to drink the water, and stick to bottled water instead. An example is the recent discovery of potentially hazardous nitrates in the public water supply in Phoenix, Arizona.
This text uses material from Wikipedia, licensed under CC BY-SA
