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V16 — system diagnostic

Home drinking-water quality and treatment

Choose testing, filtration, softening, UV or reverse osmosis from actual results rather than taste or marketing.

Checked: 2026-08-22

VERT / GREEN

Document the water source, test results and treatment maintenance.

JAUNE / YELLOW

Iron, manganese, hardness, arsenic, lead, microbes or odours require different solutions and sometimes staged treatment.

ROUGE / RED

E. coli, a contaminant above a health guideline or an unclear result: use a safe source and confirm the treatment.

Pre-decision triage

Useful tools / data

  • Accredited-lab report
  • Filter/cartridge history
  • Manual and relevant NSF/ANSI certification

What the professional checks

  • Interpret overall water chemistry before selection
  • Size point-of-use vs point-of-entry treatment
  • Validate performance with before/after testing
Related path

Continue with the right tools

These links connect this page to the next useful checks and decisions without repeating the full content.

Start from a symptomOrganize plausible causes, observations, urgency and the right professional.Open →Track water useCompare meter readings and flag unusual changes.Open →Review water resilienceConnect flooding, drainage and future events to building adaptations.Open →Score home resiliencePrioritize water, outages, fire, climate, health and records.Open →Plan site, drainage and utilitiesCoordinate access, water, sewer, wells, septic, grading and site constraints.Open →
Explore: Legacy conditions and resilience systems

Legacy conditions and resilience systems

Check these before enclosing, excavating, modernizing or automating an existing system.

Explore: Advanced systems and special cases

Advanced systems and special cases

Checks that change sequencing, risk or which professionals must be coordinated.

Explore: Hidden systems and critical interfaces

Hidden systems and critical interfaces

These checks target costly problems that often appear only after opening assemblies, conversions or changes of use.

Explore: Project risks and overlooked interfaces

Project risks and overlooked interfaces

This section connects payment, water, envelope, ventilation and jobsite details that often create costly surprises.

Laundry room leak containment
Explore: Finish and service details to verify

Finish and service details to verify

This section connects small details that become costly once finishes are closed.

Outdoor faucet: freeze and backflow protection
Explore: Blind spots before proceeding

Blind spots before proceeding

This section checks that can change methods, insurance, testing or work sequence.

Explore: Remaining specialized systems

Remaining specialized systems

This section connects uncommon but costly decisions to systems already tracked by RenoAtlas.