Operating urban wastewater treatment plants, total for the country, by Statistical Region and River Basin District

Operating urban wastewater treatment plants, total for the country, by Statistical Region and River Basin District

  • Data
    
    ACTIVE URBAN WASTEWATER TREATMENT PLANTS (UWWTP), TOTAL FOR THE COUNTRY
    Urban wastewater treatment plantsUnit of measure2023
    Total UWWTP1 Number 182
    Population connected to urban wastewater treatment plants % 67.4
    UWWTP with primary treatment Number 4
    UWWTP with secondary treatment Number 82
    UWWTP with tertiary treatment Number 96
    of which: Nitrogen removal Number 94
    of which: Phosporus removal Number 94
    UWWTP - capacity over 2000 p.e. Number 116
    Primary treatment Number 2
    Secondary treatment Number 30
    Tertiary treatment Number 84

    1 Data refer to urban wastewater treatment plants working by order of public authorities. UWWTP are classified according to the availlable technology of treatment. Source of data is NSI - exhaustive statistical survey covering the Public Water Supply (PWS) and municipalities. For categorization of UWWTP also were used data from the Ministry of Environment and Water.
    ACTIVE URBAN WASTEWATER TREATMENT PLANTS (UWWTP) BY STATISTICAL REGION¹
    (Number)
    Statistical Region (NUTS 2)2023
    Bulgaria  
    UWWTP, total 182
    UWWTP with primary treatment 4
    UWWTP with secondary treatment 82
    UWWTP with tertiary treatment 96
    of which: capacity over 2000 p.e. 116
    Primary treatment 2
    Secondary treatment 30
    Tertiary treatment 84
    Severozapaden  
    UWWTP, total 27
    UWWTP with primary treatment 0
    UWWTP with secondary treatment 11
    UWWTP with tertiary treatment 16
    of which: capacity over 2000 p.e. 16
    Primary treatment 0
    Secondary treatment 2
    Tertiary treatment 14
    Severen tsentralen  
    UWWTP, total 20
    UWWTP with primary treatment 1
    UWWTP with secondary treatment 2
    UWWTP with tertiary treatment 17
    of which: capacity over 2000 p.e. 16
    Primary treatment 1
    Secondary treatment 2
    Tertiary treatment 13
    Severoiztochen  
    UWWTP, total 23
    UWWTP with primary treatment 1
    UWWTP with secondary treatment 12
    UWWTP with tertiary treatment 10
    of which: capacity over 2000 p.e. 18
    Primary treatment 1
    Secondary treatment 7
    Tertiary treatment 10
    Yugoiztochen  
    UWWTP, total 35
    UWWTP with primary treatment 0
    UWWTP with secondary treatment 9
    UWWTP with tertiary treatment 26
    of which: capacity over 2000 p.e. 25
    Primary treatment 0
    Secondary treatment 4
    Tertiary treatment 21
    Yugozapaden  
    UWWTP, total 36
    UWWTP with primary treatment 1
    UWWTP with secondary treatment 25
    UWWTP with tertiary treatment 10
    of which: capacity over 2000 p.e. 16
    Primary treatment 0
    Secondary treatment 6
    Tertiary treatment 10
    Yuzhen tsentralen  
    UWWTP, total 41
    UWWTP with primary treatment 1
    UWWTP with secondary treatment 23
    UWWTP with tertiary treatment 17
    of which: capacity over 2000 p.e. 25
    Primary treatment 0
    Secondary treatment 9
    Tertiary treatment 16

    1 Data refer to urban wastewater treatment plander of public authorities. UWWTP are classified according to the availlable technology of treatment. Source of data is NSI - exhaustive statistical survey covering the Public Water Supply (PWS) and municipaalso were used data from the Ministry of Environment and Water.
    ACTIVE URBAN WASTEWATER TREATMENT PLANTS (UWWTP) BY RIVER BASIN DISTRICT¹
    (Number)
    River Basin District2023
    Bulgaria  
    UWWTP, total 182
    UWWTP with primary treatment 4
    UWWTP with secondary treatment 82
    UWWTP with tertiary treatment 96
    of which: capacity over 2000 p.e. 116
    Primary treatment 2
    Secondary treatment 30
    Tertiary treatment 84
    Danube  
    UWWTP, total 61
    UWWTP with primary treatment 1
    UWWTP with secondary treatment 19
    UWWTP with tertiary treatment 41
    of which: capacity over 2000 p.e. 41
    Primary treatment 1
    Secondary treatment 5
    Tertiary treatment 35
    Black Sea  
    UWWTP, total 40
    UWWTP with primary treatment 1
    UWWTP with secondary treatment 12
    UWWTP with tertiary treatment 27
    of which: capacity over 2000 p.e. 31
    Primary treatment 1
    Secondary treatment 8
    Tertiary treatment 22
    East Aegean  
    UWWTP, total 57
    UWWTP with primary treatment 1
    UWWTP with secondary treatment 30
    UWWTP with tertiary treatment 26
    of which: capacity over 2000 p.e. 36
    Primary treatment 0
    Secondary treatment 11
    Tertiary treatment 25
    West Aegean  
    UWWTP, total 24
    UWWTP with primary treatment 1
    UWWTP with secondary treatment 21
    UWWTP with tertiary treatment 2
    of which: capacity over 2000 p.e. 8
    Primary treatment 0
    Secondary treatment 6
    Tertiary treatment 2

    1 Data refer to urban wastewater treatment plants working by order of public authorities. UWWTP are classified according to the availlable technology of treatment. Source of data is NSI - exhaustive statistical survey covering the Public Water Supply (PWS) and municipalities. For categorization of UWWTP also were used data from the Ministry of Environment and Water.
    21.05.2025
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  • Upcoming press releases and data (8)
    Date Name
    30.06.2025 Waste from economic activity - 2023
    31.10.2025 Environmental goods and services - 2023
    19.12.2025 Air emission accounts - 2023
    19.12.2025 Physical energy flow accounts - 2023
    22.12.2025 Expenditure on protection and restoration of the environment - 2023
    17.02.2026 Environmental Statistics - 2024
    22.04.2026 Air emissions - 2024
    30.04.2026 Environmental taxes - 2024
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