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In 2016, Bulgaria had 328 urban waste water agglomerations of more then 2 000 population equivalent (p.e). These agglomerations generated a total load of 7 448 278 p.e. 86% of this load is connected to collecting systems and 8% addressed through Individual and Appropriate Systems (storage or septic tanks, micro-stations,...). These agglomerations are connected to 2 primary treatment plant, 9 secondary treatment plants and 97 more stringent treatment plants. All these treatment plants have a total design capacity of 8 536 001 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 system6,425,423 pe, 86.3 %
Individual and Appropriate Systems611,045 pe, 8.2 %
Discharged without treatment411,810 pe, 5.5 %
Total7,448,278 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 information7,448,278 pe
328 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
Compliant1,728,506 pe
Not Compliant5,704,800 pe
Not relevant9,393 pe
?5,579 pe
Total7,448,278 pe
*pe: Population equivalent
Number of agglomerations by compliance
See the data table
Number of agglomerations by compliance
See diagram
Compliance state2016
Compliant95
Not Compliant229
Not relevant3
?1
Total328
*: 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
Compliant4,503,134 pe
Not Compliant1,377,451 pe
Total5,880,585 pe
*pe: Population equivalent
Number of treatment plant by compliance
See the data table
Number of treatment plant by compliance
See diagram
Compliance state2016
Compliant78
Not Compliant30
Total108
*: 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 treatment5,241,371 pe
Primary treatment3,478 pe
Secondary treatment635,736 pe
Total5,880,585 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 treatment97
Primary treatment2
Secondary treatment9
Total108
*: 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 pe923,453 pe
10,000 to 100,000 pe2,481,677 pe
> 100,000 pe4,043,148 pe
Total7,448,278 pe
*pe: Population equivalent
Number of agglomeration by size
See the data table
Number of agglomeration by size
See diagram
Size2016
< 10,000 pe230
10,000 to 100,000 pe87
> 100,000 pe11
Total328
*: Number of elements

MS Level statistics

Sludge destination
See the data table
In 2016, 66,920 Tons DS of sludge was generated
Sludge destination
See diagram
In 2016, 66,920 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 agriculture26,229.5
Re-used: Others14,227.6
Disposed: Landfill6,124.4
Disposed: Incineration0.0
Disposed: Others20,338.7
Total66,920.2
mslReuseOthers is recultivation of terrains, biogas, compost with red Californian worms; mslDisposalOthers is temporary disposal at drying fields at the WWTP area.

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
20163,810,1823,638,096 -
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
2016155173 -
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
20162,459,9033,951,9328,845
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
20161102125
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
20161,253,7554,438,293733,375
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
20164544239