App D - Effluent

3.4      Setback Distances
The Queensland Plumbing and Wastewater Code V1:2024 Appendix 1 outlines minimum setback
separation distances required for on-site wastewater management facilities. This design complies with
the relevant setbacks.

The ‘Land Application Area Setback Distances’ (QPWC Table T2) are presented in Table 6.

Table 6: Separation Distances: Subsurface land application areas
                                                                                       Separation Distance
                                 Feature
                                                                            Upslope           Downslope               Level
 Property boundaries, pedestrian paths, walkways,
 recreation areas, retaining wall, and footings for buildings                 2m                  4m                  2m
 and other structures
 Inground swimming pools                                                      6m                  6m                  6m
 Inground potable water tank not exposed to primary
                                                                              6m                  6m                  6m
 effluent
 Inground potable water tank exposed to primary effluent                     15 m                15 m                 15 m
*Distances are given in meters and are measured from the edge of trench/bed excavation or subsurface irrigation distribution
pipework to the nearest point of the feature

The ‘Protection of Surface Water and Groundwater Setback Distances’ (QPWC Table T5) are presented
in Table 7.

Table 7: Separation Distances: Protection of Surface Water and Groundwater
                                 Feature                                               Separation Distance
 Effluent Quality                                                          Adv. Sec.         Secondary            Primary
 Top of bank of permanent water course                                       10 m               30 m                50m
 Top of bank of intermittent water course                                    10 m               30 m                50m
 Top of bank of a lake, bay or estuary                                       10 m               30 m                50m
 Top water level of a surface water source used for
                                                                             10 m               30 m                50m
 agriculture, aquaculture or stock purposes
 Open stormwater drainage channel or drain                                   10 m               30 m                50m
 Bore or dam                                                                 10 m               30 m                50m
 Unsaturated depth to a permanent water table (vertical)                     0.3 m              0.6 m               1.2m
*Distances are given in meters and are measured from,
         - any part of the on-site sewage facility (including pipes and fittings) and,
         - the edge of irrigated wetted area of the Land Application Area to the feature as listed.

Where ‘on-site sewage facility’ is defined as:
         a facility, other than an environmentally relevant on-site sewage facility, installed on premises, that includes:
                     (i) an on-site sewage treatment plant on the premises for treating sewage produced on the premises; and
                     (ii) either
                                 a. a land application area on the premises for disposal of the effluent produced by the on-site
                                 sewage treatment plant; or
                                 b. a tank for storing on the premises the effluent produced by the on-site sewage treatment plant
                                 for later disposal off the premises by collection from the tank; or

The sewage pump stations are not formal parts of the ‘on-site sewage facility’.




Site and Soil Evaluation                                              Proposed Cabins - 486 Tablelands Road, Cooran Qld 4569
Taylor Environmental (Australia) Pty Ltd                                                                         Page 8 of 22