What are Wastewater Surcharges?

These are extra costs that may be added to a craft brewery’s wastewater treatment bill by municipalities.

Surcharges are levied by municipalities to offset the additional costs they incur to treat over-strength wastewater.

How are they calculated?

Surcharge Cost
=
Amount Over-Strength
kg/m3
Concentration of wastewater above the sewer use by-law limit. Based on sampling by municipality.
×
Volume
m3
Total volume of water discharged to the sewer
×
Parameter Surcharge Rate
$/kg
The applied rate for individual sewer parameters

What do municipalities consider over-strength?

BOD

300

mg/L

[ typical brewery: 2,000 – 8,000 mg/L ]

TSS

300

mg/L

[ typical brewery: 1,000 – 5,000 mg/L ]

FOGs

150

mg/L

pH

Less than
6
0%
Greater than
10
0%
[ typical brewery: 3 – 13 ]

Surcharge costs are based solely on the contaminant that is most out of compliance or it could be a combined total based on each parameter out of compliance.

Craft brewers should discuss over-strength wastewater and possible surcharges with their local municipal water department.

Potential Brewery Surcharges

Potential Brewery Surcharges