Why thewater isn't it more pure and clear as it was many years ago? Water is a precious element for human life. The waters of rivers, lakes, seas and oceans are polluted by industrial waste, urban sewage, toxic dust and acids suspended in the air and brought down by the rains.
The sewage found in the sewers contains large quantities of human excrement: they would have to pass through purification plants before being discharged into rivers. Unfortunately, in Italy less than half of the discharges are purified. For this reason, Italy has already been referred by the European Court of Justice. Sewage sewage can contain microorganisms that cause diseases such as cholera, salmonellosis, etc. A person risks getting sick if he ingests these organisms and maybe it can happen by bathing in the river or eating contaminated shellfish.
Some types of industries, such as food, dump organic materials directly into rivers. Fertilizers, both chemical and natural, can pollute rivers. When therain water or even the irrigation filter seeps into the soil, slowly leaving out some of the fertilizers used, up to the groundwater from which the water is taken for drinking. As a result, it could become unfit for drinking due to nitrates and phosphates released by chemical fertilizers used on the soil. But what makes everything more worrying are some of our daily actions that inevitably contribute to polluting the water.
How to pollute the water less?
The substances that pollute water are: organic compounds, bacteria, synthetic detergents, household waste, insecticides, agricultural herbicides, metals, toxic and harmful substances, hydrocarbons from industrial waste.
- Do not throw cooking oils and fats down the sink or toilet. Among the most polluting substances we remember mineral oil: a kg of oil if it reaches an aquifer can make a thousand cubic meters of good quality water unusable). Chromium: 50 micrograms of chromium per liter is enough for the water to be no longer drinkable.
- Use biologically degradable detergents, while keeping the dosage as low as possible.
- Do not use the toilet as a bin, throwing solid waste or toxic substances. These create problems for the sewer system, increasing the costs of purification.
- Do not connect the system powered by public drinking water, with connections to private water, drinkable or otherwise, (it is absolutely forbidden). This is to avoid backflows of water into the public network and consequent pollution risks.
These are small gestures that can help not pollute our water. You will get not just a water saving, but also of money: a double advantage where the individual saves and the community helps to preserve the quality of the water.