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In 2016, Portugal had 447 urban waste water agglomerations of more then 2 000 population equivalent (p.e). These agglomerations generated a total load of 12 237 640 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 8 primary treatment plant, 271 secondary treatment plants and 193 more stringent treatment plants. All these treatment plants have a total design capacity of 16 766 307 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
Destination2016
Collected by collecting system12,231,550 pe, 100 %
Individual and Appropriate Systems0 pe, 0 %
Discharged without treatment6,090 pe, 0 %
Total12,237,640 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 type2016
No information12,237,640 pe
447 na
*pe: Population equivalent, *na: Number of agglomeration

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 state2016
Compliant9,839,040 pe
Not Compliant2,398,600 pe
Total12,237,640 pe
*pe: Population equivalent
Number of agglomerations by compliance
See the data table
Number of agglomerations by compliance
See diagram
Compliance state2016
Compliant373
Not Compliant74
Total447
*: 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 state2016
Compliant10,024,740 pe
Not Compliant2,154,810 pe
Not relevant49,000 pe
Total12,228,550 pe
*pe: Population equivalent
Number of treatment plant by compliance
See the data table
Number of treatment plant by compliance
See diagram
Compliance state2016
Compliant386
Not Compliant77
Not relevant9
Total472
*: 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 type2016
More stringent treatment7,628,820 pe
Secondary treatment4,149,020 pe
Primary treatment450,710 pe
Total12,228,550 pe
*pe: Population equivalent
Number of treatment plant by treatment type
See the data table
Number of treatment plant by treatment type
See diagram
Treatment type2016
More stringent treatment193
Secondary treatment271
Primary treatment8
Total472
*: 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
Size2016
< 10,000 pe1,325,970 pe
10,000 to 100,000 pe3,852,270 pe
> 100,000 pe7,059,400 pe
Total12,237,640 pe
*pe: Population equivalent
Number of agglomeration by size
See the data table
Number of agglomeration by size
See diagram
Size2016
< 10,000 pe290
10,000 to 100,000 pe126
> 100,000 pe31
Total447
*: 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
2016
ParameterEnteringDischarged
BOD0.00 tons/year16,338.31 tons/year
COD0.00 tons/year50,440.40 tons/year
N0.00 tons/year13,321.76 tons/year
P0.00 tons/year1,279.02 tons/year
BOD, COD, N, P concentration
See the data table
BOD, COD, N, P concentration
See diagram
2016
ParameterEnteringDischarged
BOD0.00 mg/l16,338,310,000.00 mg/l
COD0.00 mg/l50,440,400,000.00 mg/l
N0.00 mg/l13,321,760,000.00 mg/l
P0.00 mg/l1,279,020,000.00 mg/l

MS Level statistics

Sludge destination
See the data table
In 2016, 119,170 Tons DS of sludge was generated
Sludge destination
See diagram
In 2016, 119,170 Tons DS of sludge was generated
Destination2016
Discharged into surface waters : Pipelines0.0
Discharged into surface waters : Ships0.0
Discharged into surface waters : Others0.0
Re-used: Soil and agriculture13,885.4
Re-used: Others100,148.0
Disposed: Landfill5,137.2
Disposed: Incineration0.0
Disposed: Others0.0
Total119,170.6
Water re-use

2016 : 1.1 % of treated waste water are re-used.
Explanation : ERSAR-RASARP 2017,VOL1. About 86% is for self-use.

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
201612,216,64021,000 -
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
20164461 -
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
20169,218,8402,026,100986,610
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
20163686613
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
20161,301,000226,50010,704,050
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
2016235419