wastewater flow ≤2000 litres/day Land Capability Assessment for constrained or high risk sites Discuss with DoH for system design, design of disposal area and system installation Wastewater system with a maximum domestic wastewater flow >2000 litres/day Validation and verification required of system performance Land Capability Assessment required for land application area Certification from Certifying Plumber and Drainer (Design) or Certifying Engineer (Hydraulic) for design and installation Community wastewater management system Validation and verification required of system performance Land Capability Assessment for land application area Certification from Certifying Plumber and Drainer (Design) or Certifying Engineer (Hydraulic) for design and installation Waste stabilisation ponds Validation and verification required of system performance Certification required by hydraulic engineer for design and installation Recycling/reuse Validation and verification required of system performance Land Capability Assessment for land application area Certification from Certifying Plumber and Drainer (Design) or Certifying Engineer (Hydraulic) for design and installation Development of RWMP in accordance with Guidelines for Wastewater Works Design Approval of Recycled Water Systems Third party irrigation Evidence of 3rd party end user agreement with supplier Land Capability Assessment for land application area Certification from Certifying Plumber and Drainer (Design) or Certifying Individual IMP must be provided for every connection that
Site and soil investigation The design of the effluent management area requires careful planning to ensure that all public and environmental health requirements are met. Site and soil characteristics must be considered when designing an effluent management area in order to determine the most appropriate location, type and size of an effluent management area. The applicant is required to provide evidence demonstrating that the site is capable of incorporating a safe and sustainable wastewater system. The level of site and soil assessment is initially determined by the hydraulic capacity of the system. A site and soil assessment report must be carried out for all wastewater systems with a maximum domestic wastewater flow less than 8000 L/day, however a land capability assessment report must be carried out for all wastewater systems with a maximum domestic wastewater flow greater than 8000 L/day and for all subdivisions where there is no reticulated sewerage. Site and soil assessment A site intended for land application of effluent from a wastewater system with a maximum domestic wastewater flow less than 8000 L/day must be assessed by a site and soil assessor who must provide a site and soil assessment report as part of the WWDA application process. The report must include, but not be limited to: Details of the investigations carried out; Site plan clearly showing: Soil sampling locations Allotment dimensions Location and dimensions of the proposed land application system Existing and proposed building and structures; Information about the soil types encountered at the samplings locations in the area of the proposed land application system; Nominated LTAR/DLR/DIR; Assessment of site suitability for long term/effluent disposal; Summary of site characteristics including land slope, flooding potential, depth to water table, depth to bedrock, land area available for the land application system, location of existing development on or on adjoining sites, proposed land use, availability of water; Supporting information with respect to climate characteristic s including rainfall and evaporation which may affect the performance of the wastewater system;