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What does the water test (to opt out of toilet upgrading under HIP) entail?


Updated by HDB

The floor outlet of the toilet is blocked off temporarily with a water plug. The floor is flooded with water to about 10 mm deep for 4 hours. The underside of the floor slab and the base of the adjacent walls are then checked for signs of leakage.

This information is sourced from HDB.

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