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 →

Legacy conditions and resilience systems

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

Advanced systems and special cases

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

Hidden systems and critical interfaces

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

V27

Project risks and overlooked interfaces

V27 connects payment, water, envelope, ventilation and jobsite details that often create costly surprises.

Laundry room leak containment
V28

Finish and service details to verify

V28 connects small details that become costly once finishes are closed.

Outdoor faucet: freeze and backflow protection

Blind spots before proceeding

V36 checks that can change methods, insurance, testing or work sequence.

Remaining specialized systems

V39 connects uncommon but costly decisions to systems already tracked by RenoAtlas.