Reverse Osmosis Installation Cost: Labor, Extras and Real Quotes

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Installation labor

• This Old House: installation typically costs $300–$700. Point-of-use installs usually run $150–$300, and complex jobs can reach $1,500.¹
• Plumbing Picks: plumber labor of about $100–$300 for a clean under-sink install that uses the existing faucet hole.²

Extras that add cost

• Drilling a new countertop hole, especially in stone²
• Running a new drain line²
• Whole-house (point-of-entry) systems, a much larger job¹

Bundled pricing

Some dealers include installation in the system price. Clear Water Concepts in Tucson, for example, lists Thirst RO systems at $795–$995 installed.³ See total system costs in RO system cost.

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Sources

1. This Old House: reverse osmosis system cost (2026)
2. Plumbing Picks: cost to install a reverse osmosis system (2026)
3. Clear Water Concepts: Thirst RO pricing (Tucson)

Last reviewed Oct 13, 2026. This is general information, not professional advice. Confirm figures with your utility and installer.