Free Invoice Template for Water Treatment Companies
Softeners, RO systems, and filter changes invoiced with grain capacity and TDS.
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What is a water treatment company invoice?
An water treatment company invoice is the bill you send a customer AFTER the work is done. It lists every part, labor charge, and tax, and tells the customer what they owe and how to pay.
What every water treatment company invoice should include
- Hardness (gpg) + TDS
- System grain capacity
- Salt type recommendation
- Annual service plan
- Warranty
Water treatment company pricing reference (US, 2026)
Common water treatment company line items. National averages — adjust for your local market.
Water treatment company invoice tips that get you paid faster
- Test water before quoting — drives proper sizing
- Salt-delivery service = recurring invoice
- Annual filter change = predictable revenue
- Photo TDS meter readings before/after
Water treatment company invoice FAQ
Do I charge sales tax on water treatment work?
Most US states tax parts/materials but exempt labor. Use Glo Invoice's per-line tax toggle so each water treatment line item is taxed correctly. Check your state — a few (HI, NM, SD, WV) tax services too.
Salt vs salt-free softener?
Salt removes hardness; salt-free conditions. Salt is the standard for real hard water.
RO water for pets/plants?
Safe — though plants prefer non-RO. Note on invoice.
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