The Discharges to Water and Land chapter covers contaminant discharges to land and water. This chapter includes on-site effluent treatment (OSET) which is currently in a separate regional plan. A key part of this chapter is setting policy for discharges to ensure they are tracking to reach Target Attribute States (TAS) set in FMU chapters. Other draft change options for this chapter include simplifying and extending urban stormwater objectives and aligning this part of the plan with the good practice we have learnt from other regional plans.

Among the many proposed technical changes are clarifying the reasonable mixing zone methodology, clarifying stormwater network discharge provisions, strengthening the protection of human drinking water supply, adding clearer wastewater network discharges provisions, and amending rules to align with the National Environmental Standards for Freshwater

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