Waste-treatment rate chart 2026
Waste-treatment costs and minimum-rate system.
- The waste-treatment rates are set annually in the annual plan of Noorderzijlvest Water Authority.
Waste-treatment costs
The costs depend on the type of waste you deliver. Wastewater is charged based on the delivered
pollution load (calculated with the government formula) multiplied by the applicable rate for the
pollution levy.
| Service | Rate |
|---|---|
| wastewater treatment | €106.27 per pollution unit (p.u.) |
| lab analysis of wastewater | €81.00 per shipment |
| sludge treatment | €1,030.00 per tonne of dry matter |
| lab analysis sludge | 74.00 per shipment |
The prices quoted are valid for the year 2026, subject to any interim changes in
final treatment costs and/or changes in legislation and regulations. The amounts do not include any
additional analyses that may be required and are exclusive of 21% VAT.
Minimum-rate system
However, in order to cover costs, a minimum limit has been set for the costs per product and
unit. This is the amount that will be charged in any case. A minimum-rate system is used in accordance with the following schedule:
| Wastewater (including septic): |
|---|
| less than 3 tonnes per shipment: 1 p.u. (= 1 x €106.27) |
| less than 15 tonnes per shipment: 2 p.u. (= 2 x €106.27) |
| 115 tonnes to max. 40 tonnes per shipment: 3 p.u. (= 3 x €106.27) |
Amounts exclude 21% VAT.
Exceptions are deliveries of septic waste from locations for which pollution levy is paid to the
Noorderzijlvest Water Authority. These can be offered for treatment free of charge.
Sample calculation 1; wastewater
Suppose you want to have wastewater treated, with volumes above the minimum quantities.
| Sample data | |
|---|---|
| quantity tank capacity means of transport | 100 tonnes (m³) 35 tonnes (m³) |
| wastewater analyses Chemical Oxygen Demand (COD) concentration Kjeldahl Nitrogen (Kj N) | 5,000 g O₂/m³ (or in mg O₂/l) 120 g N/m³ (or in mg N/l) |
| Calculation of pollution units (p.u.): in accordance with the national formula number of p.u. | In accordance with the national formula 10.13 p.u. = ( Q * ( CZV + 4.57 * Kj N ) / 150 ) / 365 |
| Calculation of number of loads number of loads | 3 (based on a 35-tonne tanker) |
| Sample data | |
|---|---|
| total treatment costs | €906.74 = 10.13 units at 89.51 |
| total lab analysis costs | 237.00 = 3 shipments at 79 |
| Total | €1,143.74 (excl. VAT) €1,383.92 (incl. 21% VAT) |
Sample calculation 2; sludge
Suppose you want to have wastewater treated, with volumes above the minimum quantities.
| Sample data | |
|---|---|
| quantity number of tonnes of dry matter number of shipments | 100 tonnes 5 3 (based on a 35-tonne tanker) |
Calculation of treatment costs*: total treatment costs | €5,150.00 = 5 tonnes of dry matter at €1,030 |
total | €5,372.00 (excluding VAT) €6,500.12 (including 21% VAT): |
* The actual costs to be invoiced will be determined after assessment by a technologist.
Questions?
Please contact us. Call +31 (0)50-368 9816, or send an email to afvalstoffenverwerken@noorderzijlvest.nl.