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  2. Drinking water and sanitation

Drinking water and sanitation

Biological oxygen demand

Updated on 04/07/2018
Définition
Sens technique
Amount of oxygen required to oxidize organic matter (biodegradable) with a biological process (oxidation of biodegradable organic matter by bacteria). The biological oxygen demand (BOD) is an index of water pollution that assesses the biodegradable fraction of the carbonaceous pollution load in wastewater, and is usually calculated after 5 days at 20°C and in darkness: it is then called BOD5.
Source
According to Kristian Benoit (naturalist)

Connection contract

Updated on 05/03/2019
Définition
Sens technique

Convention by which the mayor specifies to an industrialist who wishes to connect to the communal sewer system the conditions to which this connection is authorized in accordance with Article L 35-8 of the Public Health Code.

Source
d'après Agence de l'eau Rhône-Méditerranée et Corse

Sludge

Updated on 19/06/2018
Définition
Sens commun

Mixture of water and solid matters, separated by physical or biological processes, resulting from wastewater treatment.

Source
According to Rhone-Mediterranean and Corsica Water Agency and Ademe

Sanitation

Updated on 13/07/2018
Définition
Sens commun
All the techniques used for collecting, conveying and treating wastewater and stormwater in a city (community sewerage) or on a private plot (on-site sanitation) before their discharge into the natural environment. The disposal of sludge coming from wastewater treatment plants is part of sewerage.
Source
According to Rhone-Mediterranean and Corsica Water Agency

Combined system

Updated on 26/10/2022
Définition
Sens commun

A sanitation system made of a single system in which wastewater and stormwater are mixed and directed to the treatment plant when there is one. During rainy periods, a portion of the mixture (overflow) may be discharged by storm drains.

Source
According to the Ministry for the Environment and OFB

Separate system

Updated on 26/10/2022
Définition
Sens commun
A sanitation system formed by two separate systems, one for wastewater and one for stormwater. This is a common system since the 1970s, only the wastewater system is connected to the treatment plant, the stormwater system usually discharging its waters into a watercourse.
Source
According to the Ministry for the Environment and OFB

Sewerage system

Updated on 19/06/2018
Définition
Sens commun

All facilities for the collecting and treatment of waste water. Here it means wastewater coming from the sewer systems of communities to which industrial or agricultural facilities can be connected.

Source

Drinking water supply security

Updated on 26/10/2022
Définition
Sens commun
All internal measures of a supply unit (drinking water supply system) to supply users in critical or crisis situations (accidental pollution of the resource, etc): interconnections between systems, use of different water resources, etc. These emergency solutions to be implemented must be listed in the specialized emergency response plan developed by the departmental administration. By extension, it means being able to ensure
Source
According to the Ministry for the Environment and OFB