Watch WaterMonkey run a Part G calc

28-second demo · silent screencast, captions included · the free Part G water calculator

Tap a preset and the whole fittings schedule fills itself — WCs, taps, shower, bath — with the litres-per-person-per-day total and the 125/110 PASS/FAIL updating live as it lands.

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What happens in the video, second by second

The clip has no narration, so here is the whole thing written out — the same text is on the video as a caption track. Every figure below is what is actually on screen at that moment.

  1. 00:00 The Part G fittings schedule. WaterMonkey, the free Part G water efficiency calculator, open on a complete fittings schedule for “House type A”.
  2. 00:02 Opens at 123.9 l/p/d — PASS. It opens on a typical spec: 123.9 litres per person per day against the 125 l/p/d target — PASS.
  3. 00:04 The Quick presets panel. The Quick presets panel is opened: typical 125 l/p/d, tight 110 l/p/d, very tight 90 l/p/d, and AD G default appliances.
  4. 00:07 Apply the tight 110 l/p/d preset. “Tight 110 l/p/d spec” is tapped, and the whole schedule rewrites itself — WC flush volumes, taps, bath, shower, sink taps, washing machine and dishwasher.
  5. 00:10 Whole spec swapped in one tap. A toast confirms the swap: tight 110 l/p/d spec applied to “House type A”.
  6. 00:12 Live result: 106.3 l/p/d — PASS. The live result updates to 106.3 l/p/d against the 110 target — PASS.
  7. 00:15 Apply the very tight 90 l/p/d preset. “Very tight 90 l/p/d spec” is tapped next.
  8. 00:18 Bath swapped for shower-only. The preset reconfigures everything instantly, including switching the dwelling to shower-only, because a bath cannot meet 90 l/p/d.
  9. 00:20 Live result: 86.0 l/p/d — PASS. New live result: 86.0 l/p/d against 90 — PASS.
  10. 00:23 Swap specs in one tap. The point of the clip: swap an entire fittings spec in one tap, with live PASS/FAIL.
  11. 00:25 End card. Closing card — WaterMonkey, the free Part G water calculator.

What you're seeing

The official Part G methodology without the spreadsheet: what takes half an hour by hand happens in the time this clip runs. Free to use; Building Control PDF reports from £25 +VAT.

Full detail — method, standards, pricing and FAQs — is on the WaterMonkey page.

The other demos

Seen enough?

WaterMonkey works exactly like the clip — free in your browser, no account. Open it and try your own numbers.

Run a Part G calc — free or call 01202 623236