Reverse Osmosis Drinking Water | Oakland & Macomb County

The short answer

Start with the complete system and the evidence

Point-of-use reverse osmosis provides treated water at a selected fixture and needs to match the water condition you want to address. Sandison reviews performance claims, feed pressure, pretreatment, storage, drainage, and ongoing service needs before selecting equipment.

What Sandison evaluates

A practical path from symptoms to the right scope

Clear diagnostic process
Licensed multi-trade coordination
Repair and replacement options
Residential and commercial support

Scope and system boundary

Reverse Osmosis Drinking Water begins with the installed system and the specific failure

Reverse-osmosis planning considers the target contaminants, certified performance claims, feed-water pressure and temperature, pretreatment, membrane recovery, drain connection, storage, faucet route, sanitation, cartridges, and rejected-water volume. Plumbing diagnosis compares fixture use, static and flowing pressure, meter behavior, valve condition, visible moisture, temperature patterns, supply and drain routes, appliance connections, and the timing of the symptom before access is opened. The purpose is to identify the failed function, its effect on the property, and the accessible evidence—not to force every symptom into the same repair menu. Sandison records conditions that belong to another trade, utility, manufacturer, restoration provider, or design professional instead of hiding them inside an equipment recommendation.

Decision and verification

The reverse osmosis drinking water recommendation should show why the next step fits

Repair versus replacement turns on the failed material, accessibility, recurrence, pressure or water-quality stress, remaining service life, code implications, and whether a local correction leaves an unreliable system in place. Useful proof can include meter change, pressure readings, isolated fixture behavior, moisture mapping, photographs of the exposed defect, and verification that the repaired section holds under normal operation. The written scope separates included work, permit or inspection questions, concealed conditions, owner responsibilities, exclusions, and the verification expected after completion. Availability, exact pricing, warranty coverage, and project duration are confirmed for the actual property rather than promised by a general service page.

Primary references

Verify the local and credential information.

Michigan LARA — permits and plumbing-code administration

Common questions

What property owners ask

Will any reverse-osmosis system remove the contaminant I am concerned about?

Check the specific system's certified reduction claims against the contaminant identified in the water information or testing. A general RO label does not establish the performance of every model for every concern.

What space and connections does an under-sink RO system need?

The plan considers feed-water pressure, the faucet route, a suitable drain connection, any storage, and access to filters and the membrane. Existing treatment and available cabinet space also affect the arrangement.

Does reverse osmosis produce wastewater?

RO separates treated water from a reject-water stream that goes to the drain. Compare the selected system's recovery and water-use information along with its contaminant claims and maintenance requirements.

Evidence and review

Why this page can be trusted

Service information based on Sandison’s documented trade scope and the technical references below. Contact the office to discuss the conditions at your property.

Technical lead: James Sandison, B.S. Mechanical Engineering, Oakland University. Michigan Mechanical License 7115733 · Michigan Master Plumber 8112263 · Michigan Plumbing Contractor 800-3618. Service information record: 2026-08-28.