In industrialized countries, pollution levels of water are much lower than in the third world and developing countries. This is because of better standards of governance, high-tech systems for purification of water instead of cleaning waste water disinfected with chemicals, and purify it to make it unfit for consumption. Areas that do not have these high-tech technologies may find water contaminated by animal waste entering the water supply source or chemicals escaping from the earth into underground wells. In developing and undeveloped countries, corruption and nepotism levels are very high, with top government officials often only interested in their personal gain, not the welfare of the country. Hence if the polluting company offered a bribe to the officials regulating, they will take the money and look the other way.
Cast Water quality
Any person who considers water pollution perhaps an issue in their area, or seeing the water is being contaminated, should contact the local environmental agency, who have the powers and knowledge to take corrective action to reduce the water pollution levels. Humans and animals should avoid touching the polluted water, especially if highly polluted, The polluted water should not be used in the bathroom or water plants. In general, if the water in a particular area is temporarily unfit for drinking due to pipe breakdown, a notice will be sent to the public so that they can make alternate arrangement for getting their drinking water supply
Any toxic or foreign material entering the water can be considered as a form of water pollution. Contamination of drinking water has been associated with gastrointestinal disorders, the spread of certain diseases, and sometimes death in severe cases. Younger children, babies and elder people are especially vulnerable to water borne pollution,. The parasites may be present in drinking water supplies. When visiting a developing country, tourists are advised to bring bottled water from elsewhere to avoid the consumption of local supplies which may have a number of microbes which can cause health problems for the tourist. Local people may be able to drink polluted water without being affected. .
Most of the sources of water pollution in industrialized countries are from chemical contamination, either from the deposit of chemicals in soil or drains, or through accidental spills. Oil spills, for example, can occur in wells inland or on sea going vessels and can pollute the water at a distance of miles from the spill. Industrial factories also dump untreated waste into the water, although this is rare in developed countries due to strict government regulations regarding the disposal of hazardous materials.In developing countries untreated industrial waste will be the major cause of pollution as the regulators are often tax while monitoring polluting industries.