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Water and wastewater rates

Water and wastewater charges are calculated by the number of days on your Enmax bill. The number of days billed can vary from 26 to 34 on your statement.

The rates listed below are all based on 30-days-of-service, which means the amount on your bill may be higher or lower, depending on the number of days you have been billed.

All rates are set via theWater Utility Bylaw andWastewater Bylaw.

In This Section:

Overview of the 2015-2018 rate changes

In November, Council finalized water and wastewater rates for 2015-2018. The new rates came into effect Jan. 1, 2015 and were in your February 2015 Enmax Water Bill.

The new rates are as follows:

  • Water: An increase of 2 per cent per year for each of the years 2015 to 2018.
  • Wastewater: An increase of 16.9 per cent for 2015, 15.8 per cent for 2016, 14.9 per cent for 2017 and 14.2 per cent for 2018.
  • Drainage: 19.1 per cent per year for each of the years 2015 to 2018.

Water and wastewater rates are determined using the following principles:

Fairness and Equity to our customers
Rates reflect each customer's fair share of the costs to provide them with water and wastewater; this means that customers pay for what they use.

Financial Sustainability
Water services are not funded through property taxes, so rates fund all necessary investments and growth, including treatment plants, pipes and storage reservoirs.

Water Resource Management
Water is a precious resource and the supply is limited. Water rates are structured to encourage all customers to conserve water, to protect the river and the watershed, and meet all environmental regulatory water requirements.

2015-18 Water Rates

For Residential Metered Customers

(Single or two-family residential metered)

  2015 2016 2017 2018
Service charge ($ per 30 days) $15.80 $15.85 $15.90 $15.95
Usage rate ($ per cubic metre) $1.77 $1.79 $1.78 $1.73

For residential flat rate customers

  2015 2016 2017 2018
$ per thousand square feet of actual lot area $6.00 $6.12 $6.25 $6.37​
$ per thousand square feet of gross building area $18.72 $19.10 $19.48 $19.87

For example:

For a 5,000 square foot lot, the calculation is 5 multiplied by $6.00 (using 2015 amounts)

PLUS

For 2,000 square feet of total building space, the calculation is 2 x $18.72 (using 2015 amounts)

For general service and multi-family customers

General Service and Multi Family Customers will be charged a basic monthly service charge based on the size of water meter.

Service charge according to water meter size
($ per 30 days)
2015 2016 2017 2018
15 mm* $15.80 $15.85 $15.90 $15.95
20 mm** $22.15 $26.98 $28.59 $31.67
25 mm $28.28 $32.95 $34.90 $38.68
40 mm $46.01 $56.39 $59.74 $66.20
50 mm $71.59 $76.78 $81.34 $90.13
75 mm $89.28 $121.37 $163.15 $180.78
100 mm $109.27 $161.39 $227.81 $252.42
150 mm $149.20 $252.47 $381.38 $422.59
200 mm $283.25 $428.77 $613.37 $679.64
250 mm $630.05 $783.73 $991.99 $1,099.17

*all residential metered and residential irrigation services will be charged the 15 mm charge.

**All irrigation services will be charged the 20 mm charge.

Usage Rates - Customers Inside City Limits
Based on Customer Class
($/cubic metre)
2015 2016 2017 2018
Single or Two-family Residential Metered $1.77 $1.79 $1.78 $1.73
Multi Family Metered $1.61 $1.62 $1.65 $1.68
Irrigation Service $2.89 $2.74 $2.73 $2.70
Usage Rates - General Service Inside City Limits
Based on size of Meter
($/cubic metre)
2015 2016 2017 2018
Less than 75 mm $1.35 $1.37 $1.42 $1.47
equal to or greater than 75 mm $1.00 $1.04 $1.14 $1.35
Bulk Water $1.38 $1.49 $1.64 $1.78
Water Rates for Bulk Water Station
  2015 2016 2017 2018
Service Charge ($/30 days) $22.15 $26.98 $28.59 $31.67

Sanitary Wastewater Charges

For residential metered customers

  2015 2016 2017 2018
Service Charge ($ per 30 days) $20.60 $23.66 $27.04 $30.57
Usage Rate ($ per cubic metre of water used) $1.10 $1.31 $1.53 $1.77

For residential flat rate customers

The sanitary sewer service charge is calculated as a percentage of the water charge according to the following:

  2015 2016 2017 2018
Percentage of water charge (%) 82.53 103.31 129.33 162.04​

For multi-family residential customers

  2015 2016 2017 2018
Service Charge ($ per 30 days) $20.60 $23.66 $27.04 $30.57
Usage Rate ($ per cubic metre of water used) $1.30 $1.49 $1.72 $1.98

For non-residential customers

  2015 2016 2017 2018
Service Charge ($/30 days) $20.60 $23.66 $27.04 $30.57
Usage Rate ($/cubic metre of water used) $1.23 $1.41 $1.62 $1.85

For Effluent Meter Customers

In addition to any charge in the above table, a charge equal to the service charge and the usage rate according to the following table for the equivalent amount of water with which the property is served from other sources.

To determine the quantity of water that is billed, the customer's effluent meter reading is divided by the return factor and multiplied by the rate.

Effluent meter rates

  2015 2016 2017 2018
Service Charge ($ per 30 days) $20.60 $23.66 $27.04 $30.57
Usage Rate ($ per cubic metre of wastewater released into The City's wastewater system) $1.37 $1.57 $1.80 $2.06

Return factors

Customer Class Return Factor
Single Family Residential Metered 0.90
Multi Family Residential Metered 0.97
General Service Metered 0.90

Wastewater surcharge rates

The rates or charges described are shown for the years 2015, 2016, 2017 and 2018, and must apply in the calendar year indicated (from January 1 to December 31, inclusive)

Formulas for determining the surcharge to be levied in 2015, 2016, 2017, and 2018. Applies to customers in waste effluent surcharge program.

Monthly rates or charges described in this section are based on a thirty (30) day period. The amount billed must be established by dividing the applicable monthly rate or charge by thirty (30) to derive a daily rate and multiplying the daily rate by the actual number of days in the billing period.

2015 Formula:

R = 0.1707 B + 0.1357 S + 0.2304 G

2016 Formula:

R = 0.1710 B + 0.1360 S +0.2308 G

2017 Formula:

R = 0.1713 B + 0.1362 S + 0.2313 G

2018 Formula:

R = 0.1717 B + 0.1365 S + 0.2317 G

Where "R" means rate in cents per cubic meter;

"B" means the amount in milligrams per litre by which the biochemical oxygen demand (BOD) of the wastewater tested exceeds three hundred milligrams per litre;

"S" means the amount in milligrams per litre by which the suspended solids (TSS) of the wastewater tested exceeds three hundred milligrams per litre; and

"G" means the amount expressed in milligrams per litre by which the fats, oils and grease (FOG) content of the wastewater tested exceeds one hundred milligrams per litre.

Drainage service charges

For customers inside city limits 2015 2016 2017 2018
Drainage Service Charge ($ per 30 days) $10.96 $13.05 $15.54 $18.51

Charges for Acceptance of Hauled Wastewater and Septage

Customers that have a permit to dispose of Hauled Wastewater and Septage into Public Disposal stations located at Bonnybrook Treatment Plant and Valleyfield Wastewater Receiving Station shall apply for an account allowing them to dispose hauled wastewater and septage to those depots. The customer will pay a fee of $25 for each access card (fee refundable on return of card), in addition to a service charge and volume charge described below.

  2015 2016 2017 2018
Service Charge
($ per 30 days)
$20.60 $23.66 $27.04 $30.57​
Volume Charge
($ per cubic metre)
$17.58 $20.36 $23.39 $26.72​

A hauled wastewater and septage manifest shall be completed for each delivery or discharge to a City disposal site. The manifest must include:

  1. the permit holder's name;
  2. the permit number;
  3. the source(s) of the waste;
  4. the volume or quantity of waste from each source;
  5. the type of the waste from each source; and
  6. the persons consigning, hauling and releasing the waste to the wastewater collection system.