Identify the pathway
Separate sanitary surcharge, storm surcharge, groundwater, runoff, roof drainage and plumbing failures.
Risk-informed choice
System Selection Framework
A product is appropriate only when its purpose, limits and operating conditions match the building’s actual risk.
- Risk-firstbefore product choice
- Evidencebefore claims
- Lifecycleinspection and maintenance
Who this is for
Use the guidance within a defined role and scope.
- Homeowners and commercial owners
- Consultants and contractors
- Property and facility teams
- Municipal programme staff
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.
Consider consequence
Critical equipment, vulnerable occupants and continuity affect priorities.
Check feasibility
Services, site constraints, permits, electrical capacity and discharge rules change options.
Plan the lifecycle
Compare testing, maintenance, battery replacement, deployment and failure response.
Practice detail
From problem statement to options
Begin with event history, municipal information, grades, drainage, service condition, below-grade fixtures, sump operation, power reliability and access. Develop options for the identified pathway rather than copying a neighbour or rebate list.
Practice detail
Evaluate interactions
A valve can change fixture use during activation. A pump depends on collection, discharge and power. A barrier can transfer water or create load. Alarms require response. Evaluate normal operation, failure modes and maintenance.
Practice detail
Select a layered plan
Rank measures by risk reduction, feasibility, consequence, cost and maintainability. Identify immediate maintenance, near-term projects and long-term capital work, and record residual risk.
Working sequence
A repeatable pathway from question to maintained outcome
- 1
Define pathway and consequence.
- 2
Collect site and authority information.
- 3
Develop compatible options.
- 4
Compare lifecycle and failure modes.
- 5
Document selection and residual risk.
Avoidable failures
Common ways good intentions become unreliable practice
- Selecting from rebate eligibility alone
- Ignoring power dependencies
- Moving water to another vulnerable area
- Deployable systems without responders
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
Is there one best device?
No. Suitability depends on pathway, building, consequence, approvals and maintenance.
Should low-cost measures come first?
Often, when safe and compatible, but not when they delay urgent controls.
Can a rebate determine the solution?
No. Funding eligibility and technical suitability are separate.
What is residual risk?
The risk that remains after selected measures are implemented.
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.