Commercial Reverse Osmosis System Pricing & Sizing Guide

Shown: Crystal Quest 10,000 GPD commercial RO system.

Commercial RO sizing comes down to three variables: your daily demand, your feed water quality, and your application. Get them right and the system runs efficiently for years; get them wrong and you either overpay or undersize and pay for it in downtime. This page gives you the straight numbers — equipment-only starting prices, realistic full-project budget ranges, and a sizing framework — so you can scope your project and walk into a quote with clear expectations.

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How to Size a Commercial RO System

Sizing comes down to four variables: your daily water demand (GPD), your peak demand (the busiest hour, not just the daily average), your source water TDS and hardness, and your application. Each application stresses an RO system differently — a spot-free car wash rinse needs very low TDS but tolerates a storage tank, while a dental or medical office needs bacteria-free output and continuous availability.

Start with your daily water demand in gallons per day (GPD). If you don’t know it, use these rules of thumb — then adjust for peak hours and source water:

Application	Estimated daily demand
Restaurant / café (per 100 seats)	500–1,500 GPD
Hotel / hospitality (per 50 rooms)	1,500–3,000 GPD
Brewery (per 100 bbl/month output)	3,000–7,000 GPD
Car wash — spot-free rinse (per 10 bays, touchless)	1,000–3,000 GPD
Dental / medical office	500–2,000 GPD
Light manufacturing / process water	2,500–15,000 GPD
Agriculture / greenhouse irrigation	5,000–30,000 GPD
Food & beverage production	7,500–50,000+ GPD
Municipal / industrial pretreatment	15,000–100,000+ GPD

Note on recovery rate: RO membranes typically recover 50–75% of feed water as purified product. A 2,500 GPD system requires approximately 3,300–5,000 GPD of feed water to produce 2,500 GPD of output. Size up accordingly and account for reject water disposal.

Rather have us size it for you? Send your daily gallons, source water, and application and our commercial team will spec the right configuration and budget range — usually within one business day. Get a sizing review →

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Commercial RO System Price Ranges

All prices below are equipment-only starting prices for the RO unit itself. Your actual project cost will depend on feed water quality, pretreatment requirements, storage tanks, repressurization pumps, freight, installation, and controls. See the next section for what commonly adds to the budget.

System size	Typical application	Equipment-only starting price	Typical full-project budget
500–2,500 GPD	Restaurant, café, small office, light process	From $3,884	$6,000–$15,000+
2,500–7,500 GPD	Hospitality, brewery, food service, car wash	From $7,409	$12,000–$25,000+
7,500–15,000 GPD	Light industrial, agriculture, laundry	From $9,000	$18,000–$40,000+
15,000–30,000 GPD	Industrial process water, food & beverage production	From $21,664	$38,000–$75,000+
30,000–50,000+ GPD	Heavy industrial, municipal pretreatment	From $42,529	Custom quote

Prices reflect equipment only. Final project cost depends on feed water TDS, pressure, recovery rate, contaminant load, pretreatment needs, and site conditions. The ranges above assume standard municipal feed water. Well water, high-TDS, or high-hardness applications typically increase total project cost.

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Why the RO System Is Only Part of the Budget

A commercial RO membrane rejects dissolved solids — but it cannot protect itself from sediment, chlorine, hardness, or iron without pretreatment. Skipping pretreatment shortens membrane life significantly and voids warranties. A complete commercial water treatment system typically includes:

• Sediment filtration — protects membranes from particles, silt, and suspended solids
• Carbon filtration / dechlorination — municipal chlorine and chloramines destroy RO membranes within months without this stage
• Water softening or antiscalant injection — hardness and scale foul membranes and reduce output; required for most well water and many municipal sources
• Iron and manganese pretreatment — iron above 0.1 ppm damages membranes; must be addressed upstream
• Storage tanks — RO systems produce purified water continuously at a controlled rate; tanks buffer against peak demand
• Repressurization pumps — storage tanks deliver water at low pressure; pumps restore working pressure for your application
• UV post-treatment — required for bacteria-free output in food service, medical, and laboratory applications
• Controls and monitoring — automatic flush cycles, TDS monitoring, low-pressure shutoff, and leak detection extend system life and reduce operating costs
• Membrane replacement budget — commercial membranes typically last 2–5 years; plan for replacement cycles

When you request a quote from PureWaterGuys, we ask about your feed water source, TDS, hardness, iron, and contaminants before recommending a system. A properly specified full system costs more upfront but costs significantly less to operate and lasts far longer than an undersized or under-treated installation.

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Shop by GPD — Current Commercial RO Inventory

All systems are Crystal Quest commercial-grade RO units — US-manufactured, warranted, and shipped direct. Equipment-only prices shown. Request a quote for pretreatment packages, full-system pricing, or freight estimates.

Crystal Quest Commercial Mid-Flow RO (500–7,000 GPD)

System	Flow rate	Equipment price
	500 GPD	$3,884	View 500 GPD system
	750 GPD	$3,984	View 750 GPD system
	1,000 GPD	$4,734	View 1,000 GPD system
	1,500 GPD	$5,162	View 1,500 GPD system
	1,800 GPD	$5,312	View 1,800 GPD system
	2,500 GPD	$5,590	View 2,500 GPD system
	4,000 GPD	$7,409	View 4,000 GPD system
	5,000 GPD	$8,051	View 5,000 GPD system
	7,000 GPD	$8,693	View 7,000 GPD system

Crystal Quest Heavy Commercial RO (10,000–50,000 GPD)

System	Flow rate	Equipment price
	10,000 GPD	$15,832	View 10,000 GPD system
	15,000 GPD	$21,664	View 15,000 GPD system
	20,000 GPD	$27,121	View 20,000 GPD system
	30,000 GPD	$42,529	View 30,000 GPD system
	40,000 GPD	$48,949	View 40,000 GPD system
	50,000 GPD	$57,509	View 50,000 GPD system

Need a size not listed, or above 50,000 GPD? Request a custom quote — we source custom configurations for industrial and municipal applications. Freight is quoted separately.

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