Urban waste water treatment per province and river basin district

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Urban waste water treatment per province and river basin district
Regions Periods Influent waste water Quantities Chemical oxygen demand (COD) (1 000 kg) Influent waste water Quantities Biochemical oxygen demand (BOD) (1 000 kg) Influent waste water Concentrations Chemical oxygen demand (COD) (mg/l) Influent waste water Concentrations Biochemical oxygen demand (BOD) (mg/l) Discharge of waste water (effluent) Quantities Chemical oxygen demand (COD) (1 000 kg) Discharge of waste water (effluent) Quantities Biochemical oxygen demand (BOD) (1 000 kg) Discharge of waste water (effluent) Concentrations Chemical oxygen demand (COD) (mg/l) Discharge of waste water (effluent) Concentrations Biochemical oxygen demand (BOD) (mg/l) Sewage sludge Wet sewage sludge by destination Cement industry (1 000 kg) Sewage sludge Dry solids by destination Cement industry (1 000 kg)
Nederland 2022 1,010,854 409,133 577 236 67,228 7,107 39 4 16,591 15,503
Noord-Nederland (LD) 2022 104,878 44,650 521 225 8,803 901 43 4 0 0
Oost-Nederland (LD) 2022 238,280 94,039 691 274 13,894 1,275 41 4 0 0
West-Nederland (LD) 2022 437,711 181,388 528 219 28,568 3,108 36 4 0 0
Zuid-Nederland (LD) 2022 229,985 89,056 579 230 15,964 1,823 40 5 16,591 15,503
Groningen (PV) 2022 32,512 12,675 497 200 3,313 437 46 5 0 0
Fryslân (PV) 2022 40,830 18,883 492 228 3,398 254 40 3 0 0
Drenthe (PV) 2022 31,535 13,093 633 263 2,092 210 43 4 0 0
Overijssel (PV) 2022 67,663 26,818 686 270 4,312 322 42 4 0 0
Flevoland (PV) 2022 23,742 10,656 914 401 929 76 39 3 0 0
Gelderland (PV) 2022 146,875 56,565 669 262 8,652 877 41 5 0 0
Utrecht (PV) 2022 71,234 29,148 597 250 3,920 404 34 4 0 0
Noord-Holland (PV) 2022 147,878 70,846 551 256 9,734 1,098 39 5 0 0
Zuid-Holland (PV) 2022 197,702 73,518 511 199 13,127 1,403 34 4 0 0
Zeeland (PV) 2022 20,898 7,876 442 166 1,786 203 37 4 0 0
Noord-Brabant (PV) 2022 163,147 65,292 599 245 10,661 1,103 40 4 0 0
Limburg (PV) 2022 66,838 23,764 539 201 5,303 719 39 5 16,591 15,503
The river Eems 2022 35,939 14,210 518 207 3,663 494 51 6 0 0
The river Rijn (North Rijn) 2022 46,572 21,157 487 219 3,926 312 40 3 0 0
The river Rijn (East Rijn) 2022 229,013 91,330 710 283 13,299 1,012 41 3 0 0
The river Rijn (Central Rijn) 2022
The river Rijn (West Rijn) 2022 443,721 183,669 551 229 28,320 3,230 37 5 0 0
The river Maas 2022 215,642 83,674 565 226 14,318 1,721 37 5 16,591 15,503
The river Schelde 2022 39,966 15,093 492 183 3,703 338 42 5 0 0
Source: CBS.
Explanation of symbols

Dataset is not available.


This table presents the most significant results of the annual survey Public treatment of urban waste water. The results are presented per province and river basin district (Rijn, Maas, Eems and Schelde) and include:
- number and capacity of the urban waste water treatment plants by type of treatment;
- the volume and concentration of organic matter, nutrients and heavy metals in the waste water running into waste water treatment plants (influent) and the volume of treated waste water (effluent). As of 2017, data on heavy metals are only inventoried for even years.
- the volume and destination of the sludge released, with nutrients and heavy metals. As of 2017, sludge data are only inventoried for even years.
Additional data on urban waste water treatment plants, process technology, energy consumption, generation of energy and sludge dewatering can be accessed on the Dutch version of StatLine.

Data available from: 1981

Status of the figures:
The figures in this table are definitive.

Changes as of 22 April 2024:
The figures of 2022 has been added.

When will new figures be published?
New figures on 2023 will be published by March 2025.

Description topics

Influent waste water
Data on concentrations and quantities of pollutants in the waste water running into urban waste water treatment plants (influent).
Quantities
Chemical oxygen demand (COD)
Chemical oxygen demand (COD). Measure of the amount of oxygen consumed when a substance is degraded chemically.
Biochemical oxygen demand (BOD)
Biological oxygen demand (BOD). Measure of the amount of oxygen consumed when a substance is biodegraded.
Concentrations
The arithmetic mean of concentrations.
Chemical oxygen demand (COD)
Chemical oxygen demand (COD). Measure of the amount of oxygen consumed when a substance is degraded chemically.
Biochemical oxygen demand (BOD)
Biological oxygen demand (BOD). Measure of the amount of oxygen consumed when a substance is biodegraded.
Discharge of waste water (effluent)
Data on concentrations and quantities of pollutants in treated waste water (effluent) discharged from urban waste water treatment plants.
Quantities
Chemical oxygen demand (COD)
Chemical oxygen demand (COD). Measure of the amount of oxygen consumed when a substance is degraded chemically.
Biochemical oxygen demand (BOD)
Biological oxygen demand (BOD). Measure of the amount of oxygen consumed when a substance is biodegraded.
Concentrations
The arithmetic mean of concentrations.
Chemical oxygen demand (COD)
Chemical oxygen demand (COD). Measure of the amount of oxygen consumed when a substance is degraded chemically.
Biochemical oxygen demand (BOD)
Biological oxygen demand (BOD). Measure of the amount of oxygen consumed when a substance is biodegraded.
Sewage sludge
Residue of treated waste water consisting of suspended solids and excess active sludge (biomass). Sewage sludge is measured including water (see Total wet sludge) or as dry solids.
Wet sewage sludge by destination
The volume of wet sewage sludge, i.e. including water by destination (processing method).
Cement industry
Co-incineration in cement ovens.
Dry solids by destination
Discharged sewage sludge in kilogrammes of dry solids by destination (processing method). Dry solid is the residue of sewage sludge after evaporation at 105 degrees centigrade.
Cement industry
Co-incineration in cement ovens.