9.4.12 Wastewater code
Editor’s note—For a proposal to be self-assessable, it must meet all the self-assessable outcomes of this code and any other applicable code. Where it does not meet all self-assessable outcomes, the proposal becomes assessable development and a development application is required. Where a development application is triggered, only the specific acceptable outcome that the proposal fails to meet needs to be assessed against the corresponding assessable acceptable outcome or performance outcome. Other self-assessable outcomes that are met are not assessed as part of the development application.
188.8.131.52 Assessment criteria
The following table identifies the assessment criteria for self-assessable and assessable development.
Table 184.108.40.206—Criteria for self-assessable and assessable development
Development ensures that the intensity and scale of the change of use of premises does not:
(a) increase any adverse ecological impacts, particularly on any nearby sensitive receiving environments, as a result of the system or increasing the cumulative effect of systems in the locality;
(b) increase any health risks during a system failure;
(c) deteriorate the water quality of existing or proposed water supplies;
(d) limit the sustainable disposal of domestic effluent.
Development ensures that the proposed disposal system complies with the requirements of:
(a) section 33 of the Environmental Protection Policy (Water) 2009;
Note—This is to be verified by a competent person and verification submitted to the Council with the development and plumbing application.
Development ensures that the lot size, configuration of new lots and location of the system allows for the efficient disposal of domestic effluent in a manner that:
(a) minimises any adverse ecological impacts, particularly on any nearby sensitive receiving environments;
(b) limits any health risks during a system failure by ensuring that the water quality of existing or proposed water supplies remains unaffected along with the sustainable disposal of domestic effluent.
Development is on a lot with a minimum size of 2,000m2 or the minimum lot size specified for the relevant zone in the Subdivision code, whichever is the greater.
Development ensures that the proposed on-site effluent disposal system is located on the lot in accordance with the:
(a) secondary standards in Table A6 of the Interim Code of Practice for On-site Sewage Disposal;
Development ensures that the proposed on-site effluent disposal system is sub-surface and located on land:
(a) with a slope of less than 15%, or where the land is terraced to receive the full disposal area;
(b) no closer than 150m to the limit of the ponded waters of a water supply reservoir or a town water intake;
(c) above 1.7m AHD or above the Q20 flood levels, whichever is the higher and not within 9m horizontal distance of this level;
(d) no closer than 25m to a cut or embankment.
Development ensures that the proposed sub-surface on-site effluent disposal system is not located:
(a) on soils with permeabilities less than 1.06m/day or greater than 3.5m/day;
(b) within 0.6m of a permanent watertable;
(c) within 1m of bedrock;
(d) on land composed mainly of sand, gravel, fractured rock or heavy clay.
Development ensures that a reserve land application area of up to 100% of the design area is available on the lot.
Development ensures that the irrigation area is not separated from the dwelling by features such as gullies, creeks, dams, roads or driveways.