Operator Certification ePayments - Test Online Certification Fees Payments Loading... Water Treatment Facility Operator Enter Operator ID: Animal or Wastewater System Operator Enter Certification Number: Finding fees due... Please confirm the operator information below before selecting to pay the certification fees. Not You? Name: The following is the most current invoice due for this operator. Invoice Number Date Invoiced Date Due Amount Due Proceeding to the ePayment processing site... Should you have questions regarding electronic payment of your certification fees, please contact us at email@example.com.