How much is a water treatment business worth?

Short answer: there is no verified trade-specific realized multiple for water treatment in the data we use, so this page runs on labeled category data. The value itself sits in a place buyers love: every softener, filter, and rental unit you install is a small annuity of salt, filters, service, and eventual replacement — if you kept the account. The math is below. See the Water Treatment page, then run your numbers in the valuation calculator.

The number

Stated up front: water treatment has no verified trade-specific realized SDE multiple in BizBuySell's trailing-five-year closed-sales data (Q3 2021 through Q2 2026) that we can quote for this trade alone. The frame is the IBBA Market Pulse size ladder (Q2 2026) — category data, and size moves the multiple more than almost anything: 2.0× SDE for prices under $500K, 2.8× at $500K–$1M, 3.1× at $1M–$2M, 4.8× EBITDA at $2–5M, and 5.8× EBITDA at $5–50M. The labeled public-comp proxy: Business & Consumer Services at 14.26× EBITDA (Damodaran Online, January 2026) — the buyer's opportunity-cost anchor, not a price for a route-based local dealer.

Worked example. Assume, as an assumption to replace with your books: revenue of $1,000,000 and an SDE margin of 26%. Line by line: $1,000,000 × 26% = $260,000 of SDE. A result in the $500K–$1M band sits on the 2.8 rung: $260,000 × 2.8 = $728,000. Roughly $728K as a starting estimate — with the recurring share of that revenue deciding how a buyer argues from there.

How buyers actually value a water treatment business

Buyers rebuild your revenue into three buckets. Installed-base revenue is the prize: rental units you own in customers' homes and businesses, paid monthly; service contracts; scheduled salt and filter delivery routes; and consumables — filters, membranes, media — that the installed equipment consumes on a cycle you can predict from the install date. Commercial accounts — restaurants, healthcare, food processing, institutions on service or deionization exchange contracts — count heavily when they are contracted and spread out, because they renew and they buy compliance as much as water quality. New equipment sales are worth the least per dollar: a softener sold and never serviced is a one-time event, and the buyer knows the next company may get the salt route.

The diligence questions are trade-specific. How many active accounts, and how many have you touched in the last 12 months? What does the rental fleet look like — units, age, and the capital it will take to keep it earning? Are delivery routes dense, with stops clustered, or spread across three counties? Do you hold the water-test data and install records per account, so a buyer can see which systems are due for media change or replacement? A dealer who can answer from a system is selling an annuity book. A dealer answering from memory is selling a customer list of unknown quality.

What raises the price — and what kills it

Raises it:

• Rental and service revenue that recurs monthly, on accounts with current payment methods and service history.
• Dense salt and filter routes — margin in this trade is made or lost in drive time between stops.
• Commercial service contracts across several facilities and industries, none of them your whole year.
• Install records and water-test history per account, so replacement and media cycles are visible and sellable.

Kills it:

• Install-only revenue: you sold the equipment, someone else owns the service relationship.
• An aging rental fleet that needs capital the buyer has to spend in year one — they will subtract it.
• Route sprawl: good accounts, bad geography, margins eaten by the truck.
• The owner is the water tester, the salesperson, and the route driver customers ask for by name.

Move your number

Margin: rental and delivery accounts that pay late, or by check mailed to a shop nobody checks, quietly tax every route. The Finix payments team works on card-on-file and ACH for recurring accounts, so the annuity actually collects itself. Recurring share: attach a service plan and a delivery schedule to every install at the moment of sale, and follow up before filters and media come due — operations the ClaroPro team builds with AI answering, reminders, and renewals, so the base compounds without the owner running routes and phones at once. Systems: install dates, equipment, and service cycles per account in one system a buyer can underwrite — the reporting build a Nova engineering team does. Run your starting number: the calculator, prefilled for water treatment.

This is an educational framework with the math shown, not an appraisal and not a statement of fair market value, and its multiples are category data, labeled as such. A real price is set by a real buyer on a specific day. The caveats on this page protect you, the owner — from overpaying for install revenue that never recurs, from underselling a rental and service book that does, and from signing a deal before anyone counted the fleet you are actually handing over. Honesty about the limits is how an owner avoids a bad deal; it was never about covering us.