Water and waste drawings that hold up from tank to trap.
Complete public health engineering documentation — water supply, drainage & sanitary layouts, plumbing riser diagrams, and tank & treatment details — coordinated with your architectural set and drawn to code from the first sheet.
Service Overview
Public health engineering drawings turn an approved floor plan into a water supply, drainage and sanitary documentation set a plumber can actually install from.
That means fixture layouts, pipe routing, and riser diagrams coordinated against the architectural plan so nothing clashes with a wall, beam, or ceiling void once work starts on site.
- What it is
- The full PHE documentation pipeline, from layout plan through tank and treatment sizing to construction-issue schedules.
- Who it’s for
- Homeowners fitting out a new build, contractors pricing an installation, and facility teams planning an upgrade or expansion.
- Why it matters
- An uncoordinated plumbing set is the leading cause of chased slabs, relocated shafts, and leaks once pipework is already in the wall.
What We Offer
Full Scope of Work
Water supply, drainage & sanitary layout, riser diagrams, and tank details issued as one coordinated set, not separate hand-offs.
Demand Calculation & Sizing
Occupancy-based water demand and sewage flow calculated to size supply lines, pumps, tanks and septic capacity correctly.
Architectural Coordination
Fixture, shaft and tank positions checked against the approved floor plan and structural layout before issue.
Deliverables, Not Just Files
Every sheet is numbered, scaled, and title-blocked to a register your plumber can follow system by system.
Benefits
Cost Efficiency
Correct pipe and tank sizing avoids over-specification and costly re-runs.
High-Quality Workmanship
Fixture-level detail means the installer plumbs exactly what was designed and approved.
Timely Completion
A sheet-by-sheet release plan keeps plumbing work moving alongside the build.
Professional Management
One coordinator tracks every system sheet from layout through commissioning.
Safety Standards
Backflow prevention, venting and cross-connection control follow applicable plumbing code.
Our Process
A fixed sequence, system by system — so every stage is checked against the last before it’s issued.
Consultation
Occupancy and demand requirements reviewed.
Planning
Supply source and disposal strategy confirmed.
Design
Layout, riser and tank drawings developed.
Execution
Construction-issue schedules and diagrams released.
Inspection
Site checks against issued system sheets.
Handover
As-built diagrams and fixture schedule documentation.
Industries We Serve
Homes & Villas
Water supply, drainage and septic systems for new builds and renovations.
Retail & Office
Fixture-dense fit-outs, grease traps and fire-fighting layouts.
Warehousing & Plant
Process water, effluent treatment and high-capacity storage documented to spec.
Schools & Healthcare
Code-mandated sanitary provision, backflow control and treatment plant sizing.
Why Choose Us?
Experienced Professionals
PHE designers who coordinate directly with site plumbers.
Transparent Pricing
A scoped, itemised quote before a single sheet is started.
Quality Fixture Guidance
Pipe, valve and fixture specs written for what’s available on your market.
Dedicated Project Management
A single coordinator tracking every system sheet against schedule.
Customer-Focused Approach
Revisions reviewed with you before reissue to site.
Code-Compliant Documentation
Drawings formatted to what your local authority and water provider expect.
Materials & Technology
CAD Pipe-Run Drafting
Rated Pipe & Fixture Specs
Current Plumbing Standards
Water-Efficient Design
Quality Assurance
Site Inspections
Scheduled visits to confirm as-installed pipework matches issued sheets.
- ✓
Quality Control
Every schedule and diagram checked and countersigned before release.
- ✓
Compliance With Standards
Drawings held to applicable plumbing code and water authority format.
- ✓
Safety Management
Venting, backflow prevention and cross-connection control reviewed before construction issue.
Every system checked before it leaves our office.
No sheet is released to site without a second review against demand calculations, code, and coordination with the architectural set.
Timeline & Project Planning
Week 1–2
Consultation & Demand Review
Brief confirmed against the approved floor plan.
Week 2-3
Layout & Design
Water supply, drainage and riser diagrams drafted.
Week 3-5
Schedules & Detailing
Tank, STP and detail sheets issued.
Ongoing
Progress Updates
Weekly status against the sheet register until handover.
Frequently Asked Questions
How long does a full public health drawing set take?
A residential PHE set typically takes 2 to 4 weeks once the architectural layout is finalized. Commercial and industrial sets take longer due to fixture counts and treatment plant sizing.
Do public health drawings depend on the architectural plan?
Yes. Water supply, drainage and sanitary layouts are drawn against the approved architectural floor plan so pipe runs, fixture positions and shaft locations align with finished walls and levels.
What’s included in a plumbing riser diagram?
The riser diagram shows the vertical run of water supply and drainage pipework floor by floor, including pipe sizing, isolation valves, and connection points to the main supply and sewer line.
Do you size septic tanks and water storage?
Yes. We calculate occupancy-based sewage and water demand to size septic tanks, soak pits, overhead and underground water tanks, and pump capacity.
Can you coordinate with the architectural and structural team?
Yes. Pipe shafts, tank locations, and drainage falls are checked against structural and architectural drawings before issue, to avoid clashes on site.
testimonials
Site Owner – Residential Project
Every fixture landed exactly where the drawing showed. Our plumber said it was the cleanest set he'd worked from all year.
Developer – Commercial Plaza
The demand schedule caught an undersized tank before we poured the plinth. That alone paid for the drawings.
Facilities Head – Institutional Campus
The riser diagram was clear enough that our facilities team could isolate any floor without calling us.