When water from treated sewage is released into a river, it can have the same effect as the release of excess?
455476
A lot of the water came from the river in the first place. There is a net loss through plants, evaporation so I can't imagine why there is a problem of excess. sometimes the water is hotter so fish, plants have trouble.\nWhy if it is so clean, do plants get more river water instead of their "clean" water?
626673
I think the water is the end result of a chemical reaction. Water is not combustible, and never will be. It is a life giving force, unlike fire. I found out that bleach and this other cleaning liquid turn into nerve gas when mixed together. I don't have a good explaination for why this happens. It just does.
177489
What do you mean by "leakage"? What would be leaking?\n\nUnless you're talking about sewage or something similarly disgusting, what would "leakage" have anything to do with tourism?
129035
Liquid water, by and large, with some dissolved materials.
343568
Its not.  What you see on top of water is hydrocarbon polution.  most really deadly polutants such as hexa valent chromium deposit in the river bed or lake floor and continue to contaminate the water for several years.
56978
water, water and more water
746587
no\nthe water evaporates too fast to cause any harm
1143787
The main cause of disturbances in water pH levels is non-point source pollution.  The following is quoted from the EPA's "Polluted" brochure, brochure number EPA-841-F-94-005, and explains how non-point source pollution in general effects water and the environment.\n\n*******\nPolluted Runoff:\nWhat is Nonpoint Source (NPS) Pollution?\n...\nNonpoint source (NPS) pollution, unlike pollution from industrial and sewage treatment plants, comes from many diffuse sources. NPS pollution is caused by rainfall or snowmelt moving over and through the ground. As the runoff moves, it picks up and carries away natural and human-made pollutants, finally depositing them into lakes, rivers, wetlands, coastal waters, and even our underground sources of drinking water.\n...\nStates report that nonpoint source pollution is the leading remaining cause of water quality problems. The effects of nonpoint source pollutants on specific waters vary and may not always be fully assessed. However, we know that these pollutants have harmful effects on drinking water supplies, recreation, fisheries, and wildlife.\n*******
1096508
Reclaimed water \nReclaimed water is wastewater (sewage) that has been highly treated and purified, and is as clean as (or more commonly, cleaner than) standard drinking water. Reclaimed water is frequently used to irrigate golf courses and parks, fill decorative fountains, and fight fires. It can also be used to irrigate crops, as long as they will be peeled or boiled before human consumption.\n\nUsing reclaimed water has many benefits. It conserves drinking water, is less expensive, and contains higher levels of nitrogen and phosphorus, which help fertilize plants.\n\nThe costs involved with recycled water typically exceed those of standard potable water in most regions of the world, where a fresh water supply is plentiful. However, in areas where supplies of fresh water are limited, treating wastewater for reuse in certain applications is becoming an economically attractive option. This is why many cities in Southwestern United States make use of reclaimed water.\n\nReclaimed water is not directly mixed with potable (drinking) water, even though it is usually cleaner than drinking water. This is because the extra filtering processes may remove minerals that are present in standard drinking water, and also because humans may face psychological barriers against drinking reclaimed water. Many cities actually ban citizens from drinking, bathing in, or filling swimming pools with reclaimed water, although the risk of harmful effects associated with doing so are very low. If you irrigate your lawn or plants with reclaimed water, you should place a sign on your property warning people not to drink from the irrigation system.\n\nOn the other hand, many cities are now investigating indirect potable use of reclaimed water. For example, reclaimed water may be pumped into reservoirs where it will mix with (and be diluted by) rainwater. This mixture of rainwater and reclaimed water could then be treated again, and finally used as drinking water.\n\nMany large cities using water from rivers are inevitably using water that came from treated sewage discharged upstream. London water had a reputation of having been drunk five times before it arrived at the tap, but this is an exaggeration. There are many large towns on the River Thames upstream of London (Oxford, Reading, Swindon, Bracknell, etc.) whose sewage discharge is subsequently used to supply London with water. This phenomenon is also observed in the United States, where the Mississippi River serves both as the destination of sewage treatment plant effluent, and the source of potable water. Research in the 1960's (London Metropolitan Water Board) demonstrated that the maximum extent of re-cycling water is about 11 times before the taste of water induces nausea in sensitive individuals. This is caused by the build up of inorganic ions such as Cl-, SO4--, K+ and Na+ in the water. Such ions are not removed or reduced by conventional sewage treatment.\n\nReclaimed water is distributed with a dual piping network that keeps reclaimed water pipes completely separate from potable water pipes. In the United States, reclaimed water is always distributed in lavender (light purple) pipes to distinguish it from potable water.\n\nIn many cities using reclaimed water, it is now in such demand that consumers are only allowed to use it on assigned days. Some cities that previously offered unlimited reclaimed water at a flat rate are now beginning to charge citizens by the amount they use.\n\nIn Singapore, reclaimed water may be labeled NEWater.\n\nA less elaborate alternative to reclaimed water is a greywater system. Grey water is water that has been used in sinks, washing machines or showers, but does not contain sewage (blackwater). In a home system, untreated grey water may be used to flush toilets or for irrigation. In a city-wide system, grey water may flow in a set of pipes separate from other sewage to a treatment plant, where it can be treated and used in similar ways as reclaimed water.
1136633
In the steady state, water flows out of the aqueduct, leaving the force on the floor&walls unchanged. However, then the barge is first introduced, the displaced water flows as a wave, causing greater forces near the wave-front.
282610
For the most part it's a cost issue.  They could build systems to capture that water when they're testing/repairing hydrents, but it would be extremely costly.  Now just because it goes into the sewer doesn't mean it's not reused, it's just not reused for human uses (drinking, showering, etc).
358805
One advantage is the concept of chlorine residual.  When chlorine is added to the water at the treatment plant, it stays in the water until the very last house on the line.  As you can imagine, there are a lot of potential water contaminants that could occur in the pipes between the plant and the last house on the line.  Since there is a chlorine residual - or chlorine still in the water - those potential contaminants are taken care of.\nOzone only treats the water at the plant and there is no residual to clean any potential contamination.  Also, ozone can only be mixed on-site, whereas chlorine is easily transportable.
933095
Well water can over time through a process called weathering, other than that acid is excellent, that is how acid rain is effecting us.\nAlso salt and a number of other chemicals and solvents.
69214
Concrete can affect the ph of soil and water that it comes in contact with. The larger the body of water, the less potential effect.
901727
If you're referring to a reverse flow due to natural OR artificial causes, the most noteworthy is the North fork of the South Branch of the Chicago River. This was reversed to have sewage flow down the Great Lakes/Mississippi waterway. The North Branch and South Fork of the South Branch were unaffected.\n\nSpeaking only of natural phenomena, there would, I am sure, be many. One I know of for sure is the Mekong, which is so close to sea level that the twice daily tides cause it to reverse flow and actually flow backward in some areas.
725520
Thermal pollution is the heating of the environment caused typically by any industrial process that produces heat.  Such process could be chemical plants, electric power generating plants and even wastewater plants. In the case of power plants vast volumes of water are used to cool the process and in so doing the water that is used to cool the process is itself heated up (transfer of heat) this water is typically returned to its origin - in some cases the sea. \n\nWhen water is heated up typically gases such as oxygen are not as soluable as they are at lower temperatures. A reduction in oxygen could produce negative effects on the life cycle of marine organisms ranging from adult mortality to reduced reproductive capacity. This is one common example of thermal pollution and solubility. \n\nIn Europe and other non costal areas of the US rivers are often used as a source of cooling water and thermal pollution is a real concern.\n\nHope this is helpful.
788712
probably nothing long lasting, all the man made sewage and chemicals washed into the sea would have done more damage to the environment than anything natural.