Water Bill Analysis to Verify Laundromat Revenue: The Real Method

By Jason Taken, business broker · HedgeStone Business Advisors · Updated 2026-09-04 · 5 min read

Why This Test Exists

A laundromat's water meter is the closest thing this industry has to an independent revenue recorder. Every paid washer cycle consumes water, the utility measures it, and neither the seller nor the buyer controls the measurement.

That makes it uniquely valuable in a business where a meaningful share of revenue historically arrived as coin. It also makes it uniquely easy to misuse, which is why most versions of this analysis you will find are wrong in the same way: they apply one gallons-per-dollar number to a store nobody has measured.

Step 1: Get the Right Documents

Ask for 24-36 months of original water bills, showing meter reads and billed consumption. Also request:

• the serving utility's current commercial rate schedule
• the meter size and the fixed meter charge
• the volumetric rate blocks
• exactly how sewer is calculated, including any multiplier of metered water
• seasonal averaging rules, surcharges, and taxes
• whether the meter and service line belong to the landlord or the tenant
• whether any other premises share the service

A seller-typed summary will not do. The bills carry the meter reads, and the rate schedule carries the sewer method — and you need both.

Step 2: Build the Installed Machine List

Every washer, by model and capacity. Then look up the manufacturer's per-cycle water consumption for each model.

This is where the analysis becomes store-specific. Per-cycle consumption varies substantially by:

• Capacity. A 20 lb machine and an 80 lb machine are not comparable.
• Type. Top-load vertical-axis machines generally use more water per pound than comparable front-load horizontal-axis machines.
• Cycle selection. Extra rinse or hot-wash cycles consume more.
• Model generation. ENERGY STAR reports that certified commercial washers use about 45% less water and are on average 9% more energy efficient than standard models (Source: ENERGY STAR, Commercial Clothes Washers) — a large enough difference to change the whole calculation if you assume the wrong generation.

Manufacturers publish technical documentation with consumption figures; Dexter and Continental Girbau both maintain public technical libraries, and distributors can supply spec sheets for any installed model.

Step 3: Subtract Non-Machine Use

Not all metered water runs through washers:

Read the meter yourself with every machine off and the store closed. If it moves, you have found a leak, and until it is fixed the analysis cannot say anything about revenue.

Step 4: Convert to a Range of Implied Cycles

Take annual billed consumption, subtract the non-machine allowance, and divide by per-cycle consumption — twice. Once using a low per-cycle assumption and once using a high one, reflecting the uncertainty in cycle selection and machine mix.

That produces a range of implied washer cycles, which is the honest output. Then convert to implied vend revenue using the store's weighted average vend price across its capacity mix.

Step 5: Compare and Investigate

Note the asymmetry that traps sellers: consumption implying more volume than the returns show tells a buyer there is unreported income — and tells a lender the returns cannot be relied on. See selling a laundromat with unreported cash.

A Worked Example

Illustrative. Every figure is an assumption, and the point is the method.

A store with 28 washers: 10 at 20 lb, 12 at 40 lb, 6 at 60 lb. Annual billed consumption of 1,940,000 gallons.

Claimed vend revenue of $268,000 sits below the implied range. That is a flag, not a verdict. Candidates, in the order to check them: a leak (read the meter with everything off), a water heater or boiler cycling and dumping, a softener regenerating excessively, free-cycle promotions, or unreported cash.

Claimed vend revenue of $460,000 would sit above the high case, which is a different and more serious problem: the store physically cannot have produced it at those vend prices.

What This Analysis Cannot Do

Be explicit about the limits, because overconfidence here has cost buyers real money:

• It cannot confirm revenue to the dollar.
• It cannot distinguish unreported cash from a leak without a meter test.
• It cannot account for a machine mix that changed mid-period unless you know when.
• It cannot handle a shared service line without separating the other premises' usage.
• It cannot substitute for the other five verification sources.

Use it as a contradiction detector inside a six-source reconciliation. See how to verify laundromat income.

The Cost Side

While you have the bills, use them for underwriting. Utilities ran a median 20% of gross revenue among CLA survey respondents for 2023 and were the most-cited operator problem at 53%. Model the store's actual water and sewer cost from the rate schedule, not from a percentage, and confirm whether sewer is billed as a multiple of metered water — because in many jurisdictions it is, and it becomes the largest utility line in the store.

What to Do Next

Request the bills and the rate schedule in your first document package, and read the meter with everything off during your first site visit. Those two steps cost nothing and resolve more questions than any other hour you will spend.

The Next Step If You Are Looking to Buy

This page is general information about laundromat transactions, not legal, tax, or investment advice, and not a guarantee of sale price, timing, or financing approval. Verify current rules with your own CPA, attorney, lender, and the relevant state or municipal agency before acting.