Quinnsite · UK Drainage

41 tools across six design stages: calculators, checkers and report generators, every output citing the governing standard.

41 toolsAll free in beta Enter the suite → In development · 2027

Outfall

Foul & discharge design: gravity, pumped, off-mains and beyond.

Phased by paying value: gravity and pumped foul first, then off-mains treatment, building drainage and adoption-ready networks.

Suite 02First modules in prototype See the plan →

Catchment

SuDS & stormwater management 41 tools 41 live in beta

Outfall

In development · v1 this year

Foul & discharge design, phased by paying value: gravity and pumped foul first, then off-mains treatment, building drainage and adoption-ready networks. One account, one login, one set of projects beside Catchment.

Gravity & pumped foul
Off-mains: fields, septic & package plants
Building drainage & documentation
Adoptable networks
Treatment works

One platform. Every suite.

Everything runs in the browser on one account: Catchment today, Outfall beside it in 2027. No licence keys, no plugins, no desktop software to maintain.

Traceable by design

Every input is logged and every formula cited back to the standard, so a reviewer can follow the reasoning, not just the result.

Report-ready

Outputs export as structured PDF reports that reference Defra NSTS S1–S7, ready to support a planning submission.

Manning

Page-aware and citation-first: Manning routes you to the right tool and the governing clause. The numbers stay in the validated tools.

Built to UK standards

Every calculation references a published UK standard or guidance document, cited in the output so a reviewer can trace it. Select a standard to read more at the source.

CIRIA C753

The SuDS Manual

The UK's primary SuDS design reference: component selection, sizing and treatment.

Visit CIRIA ↗

Defra NSTS

Non-Statutory Technical Standards

National technical standards for surface-water drainage on new development.

View on GOV.UK ↗

EA climate change

Climate change allowances

Peak rainfall & river-flow uplift allowances by epoch and catchment.

View on GOV.UK ↗