Stormwater volume reduction demonstration

Klar Cite’s name

Mandatory

Required: must be met for the credential.

Guidance

This is guidance, not a requirement. Green Star Buildings Submission Guidelines restates what Green Star’s standard requires; the register holds it and cites it, and does not count it as a requirement or show it as one.

Green Star·clause Credit 42·p.304

Ecosystem Health

Exemption: A coastal site where the project stormwater outflows are directly into tidal areas or the ocean. A site where groundwater infiltration is not appropriate due to soil or topographical conditions (refer Guidance for examples) and the project has insufficient demand for harvested water. In a tropical region (as per NCC climate zones) where retention of high intensity flows on larger sites is not feas
Level: Credit Achievement

Original wording

Green Star Buildings Submission Guidelines clause Credit 42 — words not shown. Read it at the source. The held copy is a single-user licence and does not extend to republishing its clauses.

The clause is held and verified. Only its words are withheld.

Klar Cite classification — not the standard’s words

Addresses: reducing stormwater discharge annually

written by a model, checked against the clause

Read it at the source

Details

What the product must meet

Exemptions: A coastal site where the project stormwater outflows are directly into tidal areas or the ocean. A site where groundwater infiltration is not appropriate due to soil or topographical conditions (refer Guidance for examples) and the project has insufficient demand for harvested water. In a tropical region (as per NCC climate zones) where retention of high intensity flows on larger sites is not feas

How it is proven

Who checks it: Applicant declares — a signed statement from the applicant

Klar Cite’s reading

Klar Cite’s reading of the clause, not the scheme’s own claim.

Type of requirement: Meet a limit or condition — e.g. a maximum emission or a minimum recycled content
Standing: Required — must be met for the credential
Topic: Ecosystem Health — the topic the clause addresses, grouped by the Common Materials Framework (CMF)
Level: Credit Achievement — the level of the credential this clause belongs to

Cite this clause

Green Star · Green Star Buildings Submission Guidelines · version v1.1 Rev A · clause Credit 42 · page 304 · build 2026-10-27-1239 · https://klarcite.com/r/e3d2dba16fc066d3

Source document

Record details

Page 304. Read in build 2026-10-27-1239, harvested 2026-10-27.

uid e3d2dba16fc066d3 · document b6cffefd9806e9f5 · fidelity verbatim · published 2025-10