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In 2018, Belgium had 379 urban waste water agglomerations of more then 2 000 population equivalent (p.e). These agglomerations generated a total load of 9 206 300 p.e. 100% of this load is connected to collecting systems and 0% addressed through Individual and Appropriate Systems (storage or septic tanks, micro-stations,...). These agglomerations are connected to 60 secondary treatment plants and 339 more stringent treatment plants. All these treatment plants have a total design capacity of 10 569 711 p.e.

Agglomeration : Generated load by collection

Generated Load by collection type (population equivalent – p.e.)
See the data table
Generated Load by collection type (population equivalent – p.e.)
See diagram
Destination2018
Collected by collecting system9,193,571 pe, 99.9 %
Individual and Appropriate Systems0 pe, 0 %
Discharged without treatment12,729 pe, 0.1 %
Total9,206,300 pe, 100 %
*pe: Population equivalent, *%: Rate
Generated Load by sewage network type (population equivalent – p.e.)
See the data table
Generated Load by sewage network type (population equivalent – p.e.)
See diagram
Network type2018
Combine system9,206,300 pe
379 na
*pe: Population equivalent, *na: Number of agglomerations

Agglomeration : Generated load by compliance

Total generated load by compliance (population equivalent – p.e.)
See the data table
Total generated load by compliance (population equivalent – p.e.)
See diagram
Compliance state2018
Compliant8,768,300 pe
Not Compliant438,000 pe
Total9,206,300 pe
*pe: Population equivalent
Number of agglomerations by compliance
See the data table
Number of agglomerations by compliance
See diagram
Compliance state2018
Compliant375
Not Compliant4
Total379
*: Number of elements

Waste water treatment plant : Load entering by compliance

Total load entering by compliance (population equivalent – p.e.)
See the data table
Total load entering by compliance (population equivalent – p.e.)
See diagram
Compliance state2018
Not connected0 pe
Not Compliant10,822 pe
Compliant8,392,130 pe
Total8,402,952 pe
*pe: Population equivalent
Number of treatment plants by compliance
See the data table
Number of treatment plants by compliance
See diagram
Compliance state2018
Not connected4
Not Compliant2
Compliant397
Total403
*: Number of elements

Waste water treatment plant : Load entering by treatment type

Total load entering by treatment type (population equivalent – p.e.)
See the data table
Total load entering by treatment type (population equivalent – p.e.)
See diagram
Treatment type2018
Secondary treatment141,959 pe
Not connected0 pe
More stringent treatment8,260,993 pe
Total8,402,952 pe
*pe: Population equivalent
Number of treatment plants by treatment type
See the data table
Number of treatment plants by treatment type
See diagram
Treatment type2018
Secondary treatment60
Not connected4
More stringent treatment339
Total403
*: Number of elements

Agglomeration : generated load by agglomeration size

Total generated load by agglomeration size (population equivalent – p.e.)
See the data table
Total generated load by agglomeration size (population equivalent – p.e.)
See diagram
Size2018
< 10,000 pe1,058,300 pe
10,000 to 100,000 pe3,860,400 pe
> 100,000 pe4,287,600 pe
Total9,206,300 pe
*pe: Population equivalent
Number of agglomerations by size
See the data table
Number of agglomerations by size
See diagram
Size2018
< 10,000 pe228
10,000 to 100,000 pe137
> 100,000 pe14
Total379
*: Number of elements

Waste water treatment plant : Total load entering and discharged

Total load entering and discharged
See the data table
Total load entering and discharged
See diagram
2018
ParameterEnteringDischarged
BOD23,000.00 tons/year1,562.10 tons/year
COD51,000.00 tons/year11,055.70 tons/year
N4,840.00 tons/year1,599.70 tons/year
P549.00 tons/year220.50 tons/year
BOD, COD, N, P concentration
See the data table
BOD, COD, N, P concentration
See diagram
2018
ParameterEnteringDischarged
BOD82.20 mg/l5.58 mg/l
COD182.26 mg/l39.51 mg/l
N17.30 mg/l5.72 mg/l
P1.96 mg/l0.79 mg/l

MS Level statistics

Sludge destination
See the data table
In 2018, 158,372 Tons DS of sludge was generated
Sludge destination
See diagram
In 2018, 158,372 Tons DS of sludge was generated
Destination2018
Discharged into surface waters : Pipelines0.0
Discharged into surface waters : Ships0.0
Discharged into surface waters : Others0.0
Re-used: Soil and agriculture32,465.0
Re-used: Others17,051.0
Disposed: Landfill0.0
Disposed: Incineration106,725.0
Disposed: Others2,131.0
Total158,372.0
Water re-use

2018 : 0.0124 % of treated waste water are re-used. This water is used in industry and in others use.
Explanation : Industrial process, services, infiltr. in aquifer

Legal compliance

Legal compliance for collection in p.e.
See the data table
Legal compliance for collection in p.e.
See diagram
YearCompliantNot compliantNot relevant
20189,206,300 - -
Legal compliance for collection by number of agglomerations
See the data table
Legal compliance for collection by number of agglomerations
See diagram
YearCompliantNot compliantNot relevant
2018379 - -
Legal compliance for 2nd treatment in p.e.
See the data table
Legal compliance for 2nd treatment in p.e.
See diagram
YearCompliantNot compliantNot relevant
20189,178,69114,880 -
Legal compliance for 2nd treatment by number of agglomerations
See the data table
Legal compliance for 2nd treatment by number of agglomerations
See diagram
YearCompliantNot compliantNot relevant
20183772 -
Legal compliance for 3rd treatment in p.e.
See the data table
Legal compliance for 3rd treatment in p.e.
See diagram
YearCompliantNot compliantNot relevant
20187,697,523423,0001,073,048
Legal compliance for 3rd treatment by number of agglomerations
See the data table
Legal compliance for 3rd treatment by number of agglomerations
See diagram
YearCompliantNot compliantNot relevant
20181472230