no obvious burden yet
Municipal source.
Source Water and Refill Water
Understand what your fill water brings into the pool before you keep fighting the same hardness, metal, or TDS problem forever.
- Understand what your fill water brings into the pool before you keep fighting the same hardness, metal, or TDS problem forever.
- Current observations, recent test results, and equipment or label details this playbook asks for.
- The issue involves electricity, gas, structural movement, missing drain covers, contamination, or work outside owner-safe inspection.
Test the water you are adding
You cannot diagnose long-term drift without knowing what the refill water contains.
Use source water to explain recurring problems
Sometimes the pool keeps drifting because the refill water keeps reintroducing the same issue.
Treat wells and disasters carefully
Private well water and post-flood water situations need more caution, not less.
资源（7）
Source water pre-treatment
Use the pre-treatment guide for hose-end filters, alternate fill sources, softened-water caveats, and repeat-fill strategy.
Draining and refill planning
Use the drain guide when the source water profile tells you dilution or staged replacement is the better answer.
Photo-Driven Stain Identification Helper
Use the photo helper when refill-water clues are showing up as stains instead of just numbers.
Well water recurring treatment decision tree
Use the recurring-treatment decision tree when the fill source is a private well and the same burden keeps coming back.
EPA secondary drinking water standards
EPA guidance on nuisance metals and water-quality characteristics such as iron, manganese, copper, chloride, and TDS.
EPA well-water contaminants guidance
EPA overview of potential well-water contaminants and why private-well owners need testing and source awareness.
EPA protect your home's water after disasters
Useful when a flood or disaster may have compromised the refill-water source.
Educational guidance only. Verify labels, manuals, local code, and site conditions before acting. Stop for electrical, gas, structural, drain, drowning, injury, emergency, or chemical-mixing risk.