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Summary chapter

Summary chapter for national stats

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2018

Bulgaria has 29.7% of its generated load compliant to the Urban Waste Water Treatment Directive (91/271/EEC).

In 2018, Bulgaria counted 332 agglomerations generating ≥2,000 p.e. each, of which:

  • 107 agglomerations, generating 2,100,408 p.e. of waste water, complied with the requirements of the Directive; and
  • 224 agglomerations, generating 4,958,230 p.e. of waste water, did not comply with the requirements of the Directive.
  • 1 agglomeration, generating 2,264 p.e. of waste water, did not relevant with the requirements of the Directive (probably because there are still under pending deadline).

The waste water load generated in Bulgaria in 2018 was reported to be 7,060,902 p.e.

In 2018, Bulgaria had not yet reached the target for collecting and treating waste water to fully comply with the Directive.

  • 5.3 % of the waste water load must still be collected (approximately 375,700 p.e.); and
  • 18% of the collected waste water load must still undergo secondary treatment in line with the requirements of the Directive (approximately 1,199,900 p.e.),
  • 20.5% of the collected waste water load from agglomerations generating >10,000 p.e. and discharging into sensitive areas must still undergo more stringent treatment in line with the requirements of the Directive (approximately 1,185,800 p.e.).

4.9% of waste water load is addressed by means of individual or other appropriate systems (IAS) i.e. non-centralised sanitation systems (approximately 348,400 p.e.).

For the 332 agglomerations, there are 256 urban waste water treatment plants, with a total design capacity of 8,582,000 p.e., of which:

  • 144 plants are active but not connected to collecting system,
  • 8 plants equipped with technology only for primary and secondary treatment,
  • 104 plants equipped with technology for more stringent treatment than secondary.

For the 256 urban waste water treatment plants, there are 143 discharges without treatment with a total load of 655,685 p.e.

Based on the 2018 data, it seems that the load generated is lower than the design capacity.

Compliance rate by Article

Agglomeration Waste water load
Bulgaria in 2018 Total
[No]
Comply
[No]
Comply
[%]
Total
[p.e.]
Comply
[p.e.]
Comply
[%]
Article 3 (collection) 329 161 48.9 % 7,035,905 6,327,953 89.9 %
Article 4 (secondary treatment) 326* 120 36.8 % 6,665,334** 2,795,376 41.9 %
Article 5 (more stringent treatment) 89* 47 52.8 % 5,607,337** 1,532,449 27.3 %

Notice : This table contains only agglomerations with expired deadlines.

*The total [No of agglomerations] includes only those agglomerations that must provide secondary treatment / or more stringent treatment than secondary before discharging waste water from their treatment plants.

**The total [p.e. waste water load] is the sum of the load of all of the agglomerations that must provide secondary treatment or more stringent treatment than secondary before discharging waste water from their treatment plants.

Data source for table: Register, summary of MS data

3 agglomerations were not taken into account in calculations of the compliance rate for Article 4 because the agglomerations use IAS for more than 98% of the collected load.

240 agglomerations were not taken into account in the calculation of the compliance rate for Article 5 because these agglomerations generate ≤10,000 p.e. each.

Distance to target

Waste water load
Bulgaria in 2018 Target
[p.e.]
Distance to target
[p.e.]
Distance to target
[%]
Collection 7,060,902 375,746 5.3 %
Secondary treatment* 6,678,147 1,199,929 18 %
More stringent treatment** 5,791,900 1,185,800 20.5 %

*The target [p.e.] for secondary treatment represents the waste water load (collected and not collected) from all agglomerations that must be subject to secondary treatment, regardless of whether or not the agglomeration complies with Article 3.

** The target for more stringent treatment represents the waste water load (collected and not collected) from all agglomerations generating >10,000 p.e. and discharging into sensitive areas (regardless of whether or not the agglomeration complies with Article 3).

Data source for table: Register, summary of MS data

The expected annual investment costs per capita for installing and renewing waste water collecting systems and treatment plants is 33 EUR/inhabitant/year.

The investment needs for ensuring adequate urban waste water collection and treatment, i.e. compliance with the Directive, as estimated by the national authorities and included in their national plan, are at the level of EUR 2828.32 million for the period 2020-2030. This covers works on treatment plants, with the forecasted investment cost of EUR 615.03 million (2020-2030) , and works on collecting systems and/or IAS, with a forecasted investment cost of EUR 2213.29 million (2020-2030).However, as indicated in a recent OECD study, Bulgaria would need to increase their investments further to reach and maintain compliance. The OECD projected that the financing needs by 2030 (total cumulative additional expenditures for sanitation) is EUR 5.1 billion.

For the reference year 2018, Bulgaria reported the production of 53,758 tonnes of sludge. The sludge is mainly re-used for soil and agriculture (56 %) and others (16 %) or disposed for others (21 %).mslReuseOthers is recultivation of terrains, biogas, compost with red Californian worms; mslDisposalOthers is temporary disposal at drying fields

No information was reported on waste water reuse, storm water overflows by Bulgaria.