Pool chemistry billing done right

Pool service pros: how much of your monthly revenue is actually chemicals you paid for out of pocket? For the average residential pool cleaning company we onboard, it's $180-260/month per truck — margin that just disappears because chemicals were "included in the service."

Stop doing that. Here's how to bill chemicals separately without a customer revolt.

Step 1: Split the invoice into 2 line items

• Monthly Pool Service — $180.00 (labor, brush, skim, vacuum, filter clean, backwash, log water test results)
• Chemicals — actual cost + 25% markup (billed monthly, itemized)

Homeowners understand this framing intuitively. It's how their car mechanic bills them: labor separate from parts.

Step 2: Log every chemical dose on the mobile app

Techs add chemical use to the completed job. Set up your service catalog with unit-priced items:

• Chlorine tablets — $/lb
• Muriatic acid — $/gallon
• Cyanuric acid (stabilizer) — $/lb
• Sodium bicarbonate (alkalinity up) — $/lb
• Sodium bisulfate (pH down) — $/lb
• Calcium chloride (calcium hardness up) — $/lb
• Diatomaceous earth — $/lb
• Salt (for salt-chlorine cells) — $/40lb bag
• Algaecide — $/quart
• Phosphate remover — $/quart

Each tech logs pounds/gallons dosed at the property.

Step 3: Roll up chemical usage monthly

End of month, Service Pro Suite generates one invoice per customer with labor + itemized chemical usage. Total is transparent, so no dispute.

Step 4: Water testing log stays with the customer

Every visit's water test (chlorine, pH, TA, calcium hardness, CYA, phosphates) lives on the customer's property record permanently. If a customer disputes a chemical charge ("why did I need 5 lbs of stabilizer last month?"), pull the CYA reading from the log — it was 12 ppm, well below the 30-50 ppm target. Fact-based conversation.

Step 5: Explain the model at signup

"Your monthly service is $180 flat — that covers everything the tech does on-site. Chemicals get billed separately at cost + 25%. Most customers see $30-90 in chemicals per month depending on the season and how heavy your usage is. You'll get a fully itemized invoice each month so you know exactly what went in."

Customers who won't sign up under this model wouldn't have been profitable anyway. Every pool service pro we've talked to says the same thing: transparency filters out bad customers.

The math

A pool tech running 60 accounts on flat-fee "chemicals included" burns $200/month/account in chemicals = $12K/month of margin lost.

Same 60 accounts on split billing with 25% chemical markup:

• $12K/month recovered (chemical cost pass-through)
• $3K/month added (25% markup profit)
• Same labor cost

That's a $180K annual swing on the exact same book of business.

Salt-chlorine cell customers get a discount

Salt pool customers don't buy chlorine tablets — the cell generates it from salt. Advertise "Salt pool customers save $600/year on chemicals" in your neighborhood marketing. It's a real number, and it converts.