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In 2018, Latvia had 57 urban waste water agglomerations of more then 2 000 population equivalent (p.e). These agglomerations generated a total load of 1 474 348 p.e. 96% of this load is connected to collecting systems and 4% addressed through Individual and Appropriate Systems (storage or septic tanks, micro-stations,...). These agglomerations are connected to 36 secondary treatment plants and 17 more stringent treatment plants. All these treatment plants have a total design capacity of 2 102 358 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 system1,411,973 pe, 95.8 %
Individual and Appropriate Systems62,375 pe, 4.2 %
Discharged without treatment0 pe, 0 %
Total1,474,348 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
No information1,474,348 pe
57 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
Compliant1,460,516 pe
Not Compliant13,832 pe
Total1,474,348 pe
*pe: Population equivalent
Number of agglomerations by compliance
See the data table
Number of agglomerations by compliance
See diagram
Compliance state2018
Compliant56
Not Compliant1
Total57
*: 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
Compliant1,370,700 pe
Not Compliant13,832 pe
Total1,384,532 pe
*pe: Population equivalent
Number of treatment plants by compliance
See the data table
Number of treatment plants by compliance
See diagram
Compliance state2018
Compliant52
Not Compliant1
Total53
*: 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 treatment157,505 pe
More stringent treatment1,227,027 pe
Total1,384,532 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 treatment36
More stringent treatment17
Total53
*: 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 pe178,719 pe
10,000 to 100,000 pe585,832 pe
> 100,000 pe709,797 pe
Total1,474,348 pe
*pe: Population equivalent
Number of agglomerations by size
See the data table
Number of agglomerations by size
See diagram
Size2018
< 10,000 pe37
10,000 to 100,000 pe19
> 100,000 pe1
Total57
*: 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
BOD30,206.05 tons/year643.88 tons/year
COD67,528.91 tons/year3,646.44 tons/year
N5,275.37 tons/year616.50 tons/year
P743.87 tons/year59.74 tons/year
BOD, COD, N, P concentration
See the data table
BOD, COD, N, P concentration
See diagram
2018
ParameterEnteringDischarged
BOD346.83 mg/l7.39 mg/l
COD775.38 mg/l41.87 mg/l
N60.57 mg/l7.08 mg/l
P8.54 mg/l0.69 mg/l

MS Level statistics

Sludge destination
See the data table
In 2018, 24,128 Tons DS of sludge was generated
Sludge destination
See diagram
In 2018, 24,128 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 agriculture12,475.0
Re-used: Others6,216.4
Disposed: Landfill70.7
Disposed: Incineration0.0
Disposed: Others5,365.7
Missing0.0
Total24,127.8
Disposal other - temporal storage

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
20181,474,348 - -
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
201857 - -
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
20181,411,973 - -
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
201857 - -
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
20181,237,57013,832160,571
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
201819137