Risk before product
Trace likely water pathways and consequences before recommending equipment.
Practice framework
Stormwater and Flood-Resilience Best Practices
A risk-first approach that connects technical suitability, competent work, verification, owner communication and long-term maintenance.
- Risk-firstbefore product choice
- Evidencebefore claims
- Lifecycleinspection and maintenance
Who this is for
Use the guidance within a defined role and scope.
- Project owners
- Technical practitioners
- Municipal programme teams
- Property and facility managers
RSM scope
Independent education and standards-informed practice guidance.
External authority
Law, code, municipal rules, permits, manufacturer instructions and qualified professional decisions remain controlling.
Project responsibility
Owners, designers, contractors, inspectors and authorities retain assigned duties.
Core principles
Build practice around clear decisions and verifiable outcomes.
Layered controls
Combine source control, drainage, plumbing protection, monitoring, preparedness and recovery.
Maintainable outcomes
Keep access, testing, cleaning, replacement and records practical.
Responsible communication
Explain benefits, limits and external approvals clearly.
Practice detail
Assessment establishes the basis
A useful assessment records building and site context, flooding history, drainage and sewer conditions, below-grade spaces, critical equipment, occupants and maintenance. It separates observations from assumptions and identifies when CCTV, survey, engineering or municipal information is still required.
Practice detail
Implementation needs hold points
Best practice defines hold points before excavation, pipe modification, concealment, backfill and energization. Record equipment, departures from plan, inspection status and corrective action before important conditions disappear from view.
Practice detail
Handover closes the loop
Owners need purpose, limits, emergency steps, testing schedules, access information, replacement components and warranty records. Major rainfall, outages, blockages, renovations and changes in use should trigger review.
Working sequence
A repeatable pathway from question to maintained outcome
- 1
Assess risk and consequence.
- 2
Confirm requirements and roles.
- 3
Choose compatible layered controls.
- 4
Verify work at hold points.
- 5
Handover, maintain and review after change.
Avoidable failures
Common ways good intentions become unreliable practice
- Starting with a preferred product
- Concealing work before verification
- Relying on verbal handover
- Ignoring occupancy or operational changes
Related pathways
Connect guidance to the next responsible action.
Official and institutional references
Check the controlling source.
RSM summarizes concepts for education. Use current official documents, local authorities and qualified professionals for project decisions.
Frequently asked questions
Important scope and application questions
Does best practice mean the most expensive option?
No. It means proportionate controls based on risk, consequence, feasibility, requirements and lifecycle responsibility.
Can several smaller measures be better than one large measure?
Sometimes. Layered controls can address different pathways and provide redundancy when interactions are understood.
Who decides whether engineering is required?
Applicable law, the authority having jurisdiction, project scope and qualified professionals determine that.
When should the framework be reviewed?
At milestones and after flooding, major storms, outages, renovations or equipment changes.
Standards-informed practice
Use guidance as part of a complete responsibility system.
Connect knowledge with competent roles, approvals, records, inspection, maintenance and transparent communication.
Published: July 19, 2026 Last reviewed: July 19, 2026
RSM provides independent educational and standards-informed guidance. Confirm current legal, code, municipal, professional, product and project requirements with the appropriate authority and qualified people.
Next steps
Use the standards system
Move from a single topic to the wider guidance, evidence and feedback process.