Sump vs ejector?
Sump = storm / seepage. Ejector = sewage. Wrong pump in the wrong pit fails fast.
Carpark · basement · rainwater pit
Sump pump Singapore — when the pit alarm will not stop
AOT Trinity lifts, services and replaces submersible sump pumps for HDB carparks, condo basements and landed rainwater pits. Send a photo of the pit and the nameplate — Tsurumi, Flygt, Grundfos or otherwise.
What a sump pump actually does
Rain and seepage collect below the drain invert. The sump pump (often two, duty and standby) pumps that water out. Failed floats, jammed impellers, burnt motors and seized guide rails leave the carpark under water after one storm.
This is not an ejector pit (sewage). Mixing the two is how sites get the wrong pump quoted.
Jobs we quote on site
- Single and dual-pump sump pits
- Float switch, electrode and high-level alarm
- Guide rail, duckfoot and non-return valve
- Control panel, contactor, timer — see parts
- Tsurumi / Flygt / Grundfos / Wilo nameplates
Labour from S$80 repair / S$120 install. Lift-out in a flooded pit is quoted after we see access. Parts and GST extra. BCA L1 ME12, PUB plumber WS16882018.
Long-tail searches this page is built for
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Sump pump FAQs
Can you work while the pit is flooded?
We isolate, pump down if safe, then lift. WhatsApp a video first so we bring the right kit.