Waste processing costs and minimum tariff system.

  • Rates for waste processing are set annually in the annual plan of the Noorderzijlvest water board.

Waste disposal costs

The costs depend on the type of waste you deliver. Wastewater is charged based on the delivered
waste load (calculated using the government formula) multiplied by the applicable rate for
pollution tax.

Waste disposal costs
ServiceRate
treat wastewater€89.51 per pollution unit (p.u.)
lab analysis of wastewater€76.00 per shipment
process sludge€870.00 per ton of dry matter
lab analysis sludge€72.00 per shipment

The prices quoted are valid for the year 2025, subject to any interim changes in
final processing 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 on the costs per product and
unit. This is the amount that will be charged in any case. A
minimum rate system is used for this, according to the following schedule:

Minimum rate system
Wastewater (including septic):
less than 3 tons per shipment: 1 v.e. (= 1 x €89.51)
less than 15 tons per shipment: 2 v.e. (= 2 x €89.51)
15 tons to a maximum of 40 tons per shipment: 3 v.e. (= 3 x €89.51)

Amounts exclude 21% VAT.

Exceptions are deliveries of septic tank waste from locations for which pollution tax is paid to the
Noorderzijlvest water board. These can be offered for processing free of charge.

Sample calculation 1; wastewater 

Suppose you want to have wastewater treated, with volumes above the minimum quantities.

Sample calculation 1; wastewater
Sample data 
quantity
tank capacity means of transport
100 tons (m³)
35 tons (m³)
Wastewater analyses Chemical Oxygen Demand (COD)
e 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.): according to the national formula
number of p.u.
According to the national formula
10.13 v.e. = ( Q * ( CZV + 4.57 * Kj N ) / 150 ) / 365
Calculation of number of loads
s number of loads
3 (based on a 35-ton tanker truck)
Sample calculation 1; wastewater treatment costs*:
Sample data
total processing costs€906.74 = 10.13 units at 89.51
total lab analysis costs237.00 = 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 calculation 1; wastewater
Sample data 
quantity
number of tons of dry matter
number of shipments 
100 tons
5
3 (based on a 35-ton tanker truck)

Calculation of processing costs*: 

total processing costs
total lab analysis costs 

€4,350.00 = 5 tons of dry matter at €870
€216.00 = 3 loads at €72

total

€4,566.00 (excl. VAT
€5,524.86 (incl. 21% VAT)
  

* The actual costs to be invoiced will be determined after assessment by a technologist.

Questions?

Please contact us. Call 050-368 9816, or send an email to afvalstoffenverwerken@noorderzijlvest.nl.