Glossary

A measure that represents the quantity of biodegradable polluting load produced and introduced into the sewer by an inhabitant permanently resident in the urban center during the day. Its degradat...

Sea water is the water that makes up the seas and oceans, where the average concentration of dissolved salts is 35 g / L. This water can be made drinkable thanks to desalination and purification pl...

Are the first 5 mm of precipitated water , in the first phase of an atmospheric event, for every square meter of impermeable surface provided with a draining net and which, when not absorbed or eva...

Fresh water: generally indicates the water in inland water courses coming from rain and/or melting ice and snow. The definition therefore excludes sea water and brackish water and includes lakes, p...

Drinking water (potable water): this is a primary resource which maintains living things and is fundamental to human survival. The legislation 31/2001, and subsequent modifications and integration...

Brackish water: is water that has more salinity than fresh water, but not as much as seawater.

Grey water: is generated from domestic washing activities carried out in laundries, bathrooms (excluding toilets) and kitchens.

Black water: is a term used to describe sewage coming from toilets.

Waste water is the water that, after being used in domestic, industrial and agricultural activities, flows out. They are also called "waste water".