The Contamination in the water of Colombia can be dated from the date in which the process of expansion of the cities of South America began, for the industrial and economic development that this means to Colombia.

An example is the city of bogota, the whole route of the river bogota that gives water to the power plant for Bogota, to its system of extraction as much for purification and distribution as the waste network of all products of excretions Corporal.

The bogota river is born in a municipality to the north of the capital called villa pinzon, there a kilometer below that body is water with natural mineral porpiedades to be mixed with water tanneries that are mostly chrome and formaldehyde, which Produces that its COD increases and begins to lose its property of being a "safe" water, below these waters are watered with escorretnias that come from porquerisas and others of cultures (these last that also are irrigated with these waters and they are of good size Because the water of the rivers to be loaded with so many minerals has abundance of phosphorus, magnesium and others), to reach the city is still manageable with usual decontamination processes, being over the capital and get the recharge of biological material, rubbish , Unknown substances, totally loses its ability to be "safe" to be unhealthy and toxic.

The river bogota until arriving at the place called "El saltto de tequendama" according to scale of contamination during its passage through the capital reaches a level of 8 of pollution and when going through the jump the oxygenation of this fall causes that the river acquires oxygen for To begin the decomposition of these sutancias changed that category to 6, but still the other municipalities pour into the river until it reaches the flubial arm of the Magdalena River which is the most important for the center of the country, contmainando in turn the aquifersoq I this River feeds and that are almost 80% + - of the total availability of water of the country.

The same happens in most of the nation's metrolpolis, pouring between natural minerals in ecce, natural and motor oils, herbicidal waters, surfactants, and the most worrisome are industrial paints that may contain even inorganic oxides, such as titanium dioxide (TiO2), antimony oxide (Sb2O3) and zinc oxide (ZnO).

Other white and insoluble inorganic compounds, such as zinc sulfide (ZnS), albayalde (hydroxycarbonate, hydroxysulfate, hydroxyphosphite or hydroxysilicate lead) and barium sulfate (BaSO4) are also used. The following inorganic oxides are common pigments for colors: iron oxide (III), Fe2O3 (yellow, red or earth color), chromium oxide (III), Cr2O3 (green), and lead oxide (IV) Pb3O4 (red). Chromates of lead, zinc, strontium and nickel produce different ranges of yellow and orange. A set of organic solids is used to obtain other colors.

It is a general problem which at this moment in the river bogota is inviting and seeking help from other countries to disregard this river and thus to decontaminate the matrix of the river Magdalena, correcting almost 100 years of errors of the Bogotans and a life of the Colombians in general.