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In 2016, Latvia had 74 urban waste water agglomerations of more then 2 000 population equivalent (p.e). These agglomerations generated a total load of 1 588 668 p.e. 95% of this load is connected to collecting systems and 5% addressed through Individual and Appropriate Systems (storage or septic tanks, micro-stations,...). These agglomerations are connected to 47 secondary treatment plants and 24 more stringent treatment plants. All these treatment plants have a total design capacity of 2 159 259 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 system1,506,692 pe, 94.8 %
Individual and Appropriate Systems81,976 pe, 5.2 %
Discharged without treatment0 pe, 0 %
Total1,588,668 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 information1,588,668 pe
74 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
Compliant1,564,977 pe
Not Compliant23,691 pe
Total1,588,668 pe
*pe: Population equivalent
Number of agglomerations by compliance
See the data table
Number of agglomerations by compliance
See diagram
Compliance state2016
Compliant72
Not Compliant2
Total74
*: 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
Compliant1,355,142 pe
Not Compliant21,315 pe
Total1,376,457 pe
*pe: Population equivalent
Number of treatment plant by compliance
See the data table
Number of treatment plant by compliance
See diagram
Compliance state2016
Compliant69
Not Compliant2
Total71
*: 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
Secondary treatment126,469 pe
More stringent treatment1,249,988 pe
Total1,376,457 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
Secondary treatment47
More stringent treatment24
Total71
*: 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 pe198,815 pe
10,000 to 100,000 pe716,183 pe
> 100,000 pe673,670 pe
Total1,588,668 pe
*pe: Population equivalent
Number of agglomeration by size
See the data table
Number of agglomeration by size
See diagram
Size2016
< 10,000 pe48
10,000 to 100,000 pe25
> 100,000 pe1
Total74
*: 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
BOD30,322.38 tons/year706.04 tons/year
COD63,266.58 tons/year3,667.61 tons/year
N5,835.31 tons/year968.75 tons/year
P869.48 tons/year96.78 tons/year
BOD, COD, N, P concentration
See the data table
BOD, COD, N, P concentration
See diagram
2016
ParameterEnteringDischarged
BOD316.68 mg/l7.37 mg/l
COD660.74 mg/l38.30 mg/l
N60.94 mg/l10.12 mg/l
P9.08 mg/l1.01 mg/l

MS Level statistics

Sludge destination
See the data table
In 2016, 25,114 Tons DS of sludge was generated
Sludge destination
See diagram
In 2016, 25,114 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 agriculture11,961.2
Re-used: Others5,338.8
Disposed: Landfill145.5
Disposed: Incineration0.0
Disposed: Others7,668.7
Total25,114.1
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
20161,588,668 - -
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
201674 - -
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
20161,503,2683,424 -
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
2016731 -
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
20161,311,84320,206174,643
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
201624149