You are here: Home Licensing Class D Questionnaire for Wastewater Operators Class D Wastewater Operators License Questionnaire Wastewater Questionnaire Mailer Wastewater Questionnaire Mailer E-Mails Form Input http://www.tceq.texas.gov./licensing/ClassDQuestionnaireWastewater/wastewaterquestionnaire/wastewaterqmailer http://www.tceq.texas.gov./@@site-logo/tceqlogo-3colors.gif Wastewater Questionnaire Mailer E-Mails Form Input