Separate taste from low delivery
Tell the provider whether the faucet has weak flow, the storage tank runs empty or taste changed after maintenance. Include the model, approximate installation date and any refrigerator connection. Available feed pressure, a blocked prefilter and a storage issue can lead to different repairs.
Define the service scope
Ask which prefilters, postfilters, membrane or tank work is included and why. The exact model controls the consumables and maintenance sequence. Request documented performance for the substances of concern rather than assuming every reverse-osmosis unit has identical certification or capacity.
Return to service carefully
Keep the sanitation, flushing and startup instructions. Have the service result checked using an appropriate method for the stated target; a conductivity or TDS reading is an operational clue, not a complete safety test. Document leaks, waste-line routing and actual faucet delivery before closing the visit.
House, additional buildings and private-well boundaries
For a Wellington request, identify the supply serving each building before discussing equipment. A household connected to municipal water differs from a house on a private well, and a barn or irrigation line may be a separate scope. List the affected outlets and the demand the proposal is expected to serve. Do not apply a domestic equipment recommendation to animal-care or other specialist uses without the relevant professional guidance. A written line map helps the provider assess the correct project.