TITLE: TRADE WASTE CHARGING PROCEDURE
REFERENCE NUMBER:
RESPONSIBLE DEPARTMENT:
Health & Public Safety
APPLICABLE LEGISLATION:
SA Public Health Act 2011
Water Industry Act 2012
Local Government Act 1999
STRATEGIC PLAN:
Strategic Imperatives: Urban Growth
Shared Aspirations: Human Settlements
RELATED POLICIES / CORPORATE
GUIDELINE:
Trade Waste Discharge Policy
APPROVED:
<<Insert Date>>
NEXT REVIEW DATE:
<Insert Date>>
1.
PURPOSE
This procedure outlines the charges associated with the Trade Waste
Discharge Policy (and the legal basis for them), the criteria for these
charges and the process of applying the charges.
Charges for trade waste discharges are imposed under the Local
Government Act 1999 (the Act) and fall into one of two categories:

a CWMS service charge (based upon the level of usage) that is
imposed under section 155 of the Act (the amount payable in respect
of this charge is declared annually as part of the Council’s annual
rates declaration); and

Volume (Trade Waste) and Specific Pollutant charges that are
payable in accordance with conditions that attach to a section 56
authorisation issued by the Council under section 56 of the Water
Industry Act 2012. These charges are imposed by the Council in
exercise of its powers under section 188(1)(a) and (f) of the Act.
Trade Waste Charging Procedure
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2.
PROCEDURE
2.1
Trade Waste Charges
Charge Type
Volume (Property
Unit Charge)
Explanation
Charge
This is an existing charge that is paid by ALL
premises serviced by CWMS and is applicable
Unit Charge
to commercial & industrial premises.
1 standard dwelling
(Property Unit)
This is the CWMS service charge imposed
under section 155 of the Act.
Volume Charge
(Trade Waste)
The trade waste volume charge will apply to
non-domestic loadings being discharged to
CWMS. It will be calculated by subtracting the
domestic and non-trade waste proportion from
the total volume of water used (where flow
meters are not installed).
Unit Charge
$/ 100KL
This charge is imposed under section 188 of
the Act.
Specific Pollutant
Charge
This charge will apply to pollutants being
discharged to CWMS above the charging
concentration range. It applies for Biological
Oxygen Demand (BOD) & Suspended Solids.
Unit Charge
$/Kg BOD, SS
This charge is imposed under section 188 of
the Act.
2.2
Local Acceptance Criteria
Charges apply for discharges exceeding the levels accepted as part of the
annual CWMS service charge as outlined below:
Unit
Accepted for Annual
Service Charge
Accepted and
charged at tariff
Tariff
charge
(range)
Not accepted
(refer to Council’s
Register of Fees &
Charges for current fee)
Volume
500KL
>500KL
$25/100KL
-
Biological
Oxygen
Demand
(BOD)
max. concentration
of 200 mg BOD5 L-1
or 530 g BOD5 /day
concentration
range 200-600 mg
BOD5 L-1 or max
1.8 Kg BOD5 /day
$1.50/Kg
BOD5
Suspended
Solids
max. concentration
of 200 mg SS L-1
or 530 gSS d-1
concentration
range 200-600 mg
SS L-1 or max. 1.6
$0.92/Kg
SS
concentrations
above 600 mg
BOD5 L-1
or 1.8 Kg
BOD5/day
concentrations
above 600 mg
SS L-1
Trade Waste Charging Procedure
7 January 2014
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Kg SS/day
2.3
or 1.6 Kg
SS/day
Charging Categories
Charges will be applicable to businesses that discharge high strength
and/or volume discharges. These will be determined by applying a
category rating for premises dependent on specific discharge criteria.
Category 1 – High Strength Discharges
Trade waste generators who discharge specific pollutants such as BOD or
Suspended Solids in large volumes (greater than 500KL/annum) and/or at
concentrations above the charging criteria for that pollutant (200mg/L BOD
& SS, or a maximum daily loading for each)
Category 2 – Low Strength/High Volume Discharges
Trade waste generators who discharge specific pollutants below the
charging criteria, but produce a high volume of wastewater (greater than
500KL/annum). These businesses may also discharge other parameters
(such as oil and grease) that require additional treatment.
Category 3 – Low Strength/Low Volume Discharges
Trade waste generators who discharge specific pollutants below the
charging criteria and have relatively low volumes (less than 500KL per
annum).
Category 4 – No Trade Waste Discharge
Premises that do not discharge a trade waste will not require a trade waste
permit, and will only be subject to the annual property unit charge – the
same as for residential properties.
2.4
Application of the Charges
Charges only apply to those premises that discharge in excess of the
acceptance criteria for volume, BOD or suspended solids (ie category 1 and
2). Charges are applied as per table 1:
Table 1: Application of Fees & Charges for each Category
Category
1
2
3
4
Property Unit
Charge
Volume (Trade
Waste) Charge
X
X
X
X
X
X
Specific Pollutant
Charge
Trade Waste Charging Procedure
X
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2.5
Determination of Trade Waste Discharge
Determination of the trade waste discharge is via one of the following ways:
1.
Indirectly via the determination of a trade waste fraction for the
discharge into CWMS. This will be determined from water usage
data and will take into consideration domestic discharges already
covered by the annual CWMS service charge and other factors such
as irrigation, cooling towers etc. A trade waste fraction form needs
to be completed for discharges that exceed the annual volume
allowance of 500KL where a flow meter is not used.
The trade waste fraction form will determine the total percentage of
water used within the business operation that does not discharge to
CWMS as part of their operations. Domestic effluent (ie sewage) will
be addressed through the relative number of property units charged
to that property. The domestic wastewater volume will then be
deducted from the total water usage using the standard allocation of
one property unit equal to 182.5KL per annum. Therefore, if a
business discharges all wastewater used in its operations to CWMS
other than domestic sewage, the business will have a discharge
factor of 100%. Domestic effluent will be charged separately as per
the current rating policy.
The trade waste fraction shall be applied to the total volume used on
the water bill minus the number of property units multiplied by
182.5KL.
Total trade waste volume (KL) = V
Total water bill volume (KL) = V1
Number of property units = N
V = V1 – (N * 182.5KL)
Council will allocate a standard industry fraction for dischargers who
fail to provide details of trade waste volume (attachment 1).
2.
Directly via the installation of a water meter at a final discharge point
upstream to any influx from domestic effluent. Where a meter is
installed in the trade wastewater line, charges will be applied directly
to the meter reading. Meters are to be maintained by the discharger
and serviced regularly to ensure the readings’ accuracy and records
must be kept to document this. Where non-mains water is used such
as bore or stormwater and can be discharged to CWMS above
500KL per annum, a meter will need to be installed (see below).
Water Usage will be obtained during routine inspections.
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2.6
Category 1 – Sampling Requirements
Sampling is required for category 1 premises to determine the quality of the
wastewater being discharged to CWMS and the appropriate charge.
Premises that have the potential to be a category 1 discharger will also be
required to undertake wastewater analysis. Category 1 premises will need
to provide quarterly data to enable calculation of an average discharge
amount for the annual charge. Wastewater analysis shall be taken from a
final point of trade waste discharge upstream to any mixing with domestic
effluent. Unlike the volume charge, the pollutant charge will be directly
proportional to the wastewater analysis.
2.7
Payment of Trade Waste Charges
The CWMS Service Charge (applicable for categories 1-4) is payable in
conjunction with Council rates and is specified on all rates notices issued in
respect of rateable properties that connect to the CWMS. The principal
ratepayer of a property is liable to pay this charge under the Act.
Volume (Trade Waste) and Specific Pollutant charges are adopted annually
pursuant to Section 188 of the Act, and are based upon the costs to Council
associated with managing trade waste discharges. The charges, once
adopted, are set out in the Council’s Schedule of fees and charges, which is
available on its website at: www.dcmtbarker.sa.gov.au
Invoices will be issued in respect of trade waste premises on a quarterly
basis for the Volume (Trade Waste) and Specific Pollutant charges. The
Council may recover outstanding trade waste charges as rates in arrears
pursuant to section 144(2) of the Act. In this event, the principal ratepayer of
the relevant trade waste property is liable to pay the relevant amount under
the Act.
2.8 ATTACHMENT 1 – STANDARD INDUSTRY FRACTIONS
From Sydney Water and Tweed Shire Council Standard Industry Fractions
Bakery
Butcher
Car wash
Carpet cleaner
Concrete batching plant
Dry cleaner
Film processor
Fish shop
Fruiterers
Laundromat
Panel beater
Pottery
Restaurants
Service Station
Take away outlet
Trade Waste Charging Procedure
90%
90%
97-100%
90%
2%
75%
95%
95-100%
100%
90%
100%
49%
90%
70%
95%
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3.
REVIEW
This Standard Operating Procedure will be reviewed every four (4) years or
earlier in the event of changes to legislation or related Policies and
Procedures or if deemed necessary by the Health & Public Safety
Department.
4.
ACCESS TO THE PROCEDURE
The Standard Operating Procedure is available to staff via the Policies &
Operating Guidelines section of the Intranet.
5.
FURTHER INFORMATION
For further information on this Standard Operating Procedure, please
contact:
Title:
The Manager, XXX
Phone:
XXX
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Trade Waste Charging Procedure
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