Graphs for national stats

In 2018, Bulgaria had 332 urban waste water agglomerations of more then 2 000 population equivalent (p.e). These agglomerations generated a total load of 7 060 902 p.e. 90% 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 1 primary treatment plant, 7 secondary treatment plants and 104 more stringent treatment plants. All these treatment plants have a total design capacity of 8 582 178 p.e.

Agglomeration : Generated load by collection

Generated Load by collection type (population equivalent – p.e.)

Generated Load by collection type (population equivalent – p.e.)

Destination	2018
Collected by collecting system	6,336,719 pe, 89.7 %
Individual and Appropriate Systems	348,437 pe, 4.9 %
Discharged without treatment	375,746 pe, 5.3 %
Total	7,060,902 pe, 100 %

*pe: Population equivalent, *%: Rate

Generated Load by sewage network type (population equivalent – p.e.)

Generated Load by sewage network type (population equivalent – p.e.)

Network type	2018
Separative and combine system	11,848 pe 1 na
Combine system	32,773 pe 2 na
No information	7,016,281 pe 329 na

*pe: Population equivalent, *na: Number of agglomerations

Agglomeration : Generated load by compliance

Total generated load by compliance (population equivalent – p.e.)

Total generated load by compliance (population equivalent – p.e.)

Compliance state	2018
Compliant	2,100,408 pe
Not Compliant	4,958,230 pe
Not relevant	2,264 pe
Total	7,060,902 pe

*pe: Population equivalent

Number of agglomerations by compliance

Number of agglomerations by compliance

Compliance state	2018
Compliant	107
Not Compliant	224
Not relevant	1
Total	332

*: Number of elements

Waste water treatment plant : Load entering by compliance

Total load entering by compliance (population equivalent – p.e.)

Total load entering by compliance (population equivalent – p.e.)

Compliance state	2018
Compliant	3,670,170 pe
Not Compliant	1,062,819 pe
Not connected	0 pe
Total	4,732,989 pe

*pe: Population equivalent

Number of treatment plants by compliance

Number of treatment plants by compliance

Compliance state	2018
Compliant	83
Not Compliant	29
Not connected	144
Total	256

*: Number of elements

Waste water treatment plant : Load entering by treatment type

Total load entering by treatment type (population equivalent – p.e.)

Total load entering by treatment type (population equivalent – p.e.)

Treatment type	2018
More stringent treatment	4,438,759 pe
Primary treatment	1,535 pe
Secondary treatment	292,695 pe
Not connected	0 pe
Total	4,732,989 pe

*pe: Population equivalent

Number of treatment plants by treatment type

Number of treatment plants by treatment type

Treatment type	2018
More stringent treatment	104
Primary treatment	1
Secondary treatment	7
Not connected	144
Total	256

*: Number of elements

Agglomeration : generated load by agglomeration size

Total generated load by agglomeration size (population equivalent – p.e.)

Total generated load by agglomeration size (population equivalent – p.e.)

Size	2018
< 10,000 pe	946,206 pe
10,000 to 100,000 pe	2,489,487 pe
> 100,000 pe	3,625,209 pe
Total	7,060,902 pe

*pe: Population equivalent

Number of agglomerations by size

Number of agglomerations by size

Size	2018
< 10,000 pe	233
10,000 to 100,000 pe	88
> 100,000 pe	11
Total	332

*: Number of elements

Waste water treatment plant : Total load entering and discharged

Total load entering and discharged

Total load entering and discharged

	2018
Parameter	Entering	Discharged
BOD	data not available	40.10 tons/year
COD	data not available	14,695.63 tons/year
N	data not available	3,042.21 tons/year
P	data not available	333.21 tons/year

BOD, COD, N, P concentration

BOD, COD, N, P concentration

	2018
Parameter	Entering	Discharged
BOD	data not available	0.09 mg/l
COD	data not available	34.16 mg/l
N	data not available	7.07 mg/l
P	data not available	0.77 mg/l

MS Level statistics

Sludge destination

In 2018, 53,758 Tons DS of sludge was generated

Sludge destination

In 2018, 53,758 Tons DS of sludge was generated

Destination	2018
Discharged into surface waters : Pipelines	0.0
Discharged into surface waters : Ships	0.0
Discharged into surface waters : Others	0.0
Re-used: Soil and agriculture	29,857.0
Re-used: Others	8,834.6
Disposed: Landfill	3,680.3
Disposed: Incineration	0.0
Disposed: Others	11,386.3
Missing	0.0
Total	53,758.3

Legal compliance

Legal compliance for collection in p.e.

Legal compliance for collection in p.e.

Year	Compliant	Not compliant	Not relevant
2018	6,327,953	707,952	24,997

Legal compliance for collection by number of agglomerations

Legal compliance for collection by number of agglomerations

Year	Compliant	Not compliant	Not relevant
2018	161	168	3

Legal compliance for 2nd treatment in p.e.

Legal compliance for 2nd treatment in p.e.

Year	Compliant	Not compliant	Not relevant
2018	2,795,376	3,869,958	19,394

Legal compliance for 2nd treatment by number of agglomerations

Legal compliance for 2nd treatment by number of agglomerations

Year	Compliant	Not compliant	Not relevant
2018	120	206	6

Legal compliance for 3rd treatment in p.e.

Legal compliance for 3rd treatment in p.e.

Year	Compliant	Not compliant	Not relevant
2018	1,532,449	4,074,888	759,109

Legal compliance for 3rd treatment by number of agglomerations

Legal compliance for 3rd treatment by number of agglomerations

Year	Compliant	Not compliant	Not relevant
2018	47	42	243