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How to pay an invoice for California residential water treatment device registration
Summary
Applicants whose device registration applications are accepted through the RWTD portal can pay the invoice online by credit card or bank withdrawal, or by mailing a check. The State Water Resources Control Board warns a convenience fee applies to credit-card payments and provides an invoice format and contact email for questions.
Applicants who receive an invoice after their residential water treatment device application is accepted through the RWTD portal can pay online by credit card or by bank withdrawal (ACH), or mail a check, a State Water Resources Control Board program presenter explained in an instructional video.
The video summarizes why the steps matter and how to complete payment: follow the invoice email’s links and instructions, enter the SWRCB invoice number and the amount due exactly as shown, and retain the payment confirmation number for records and potential follow-up.
To pay by credit card, the presenter instructs users to open the state payments website…
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