Texas, TCEQ, Water System Operator, Class D
Texas Class D water operator license requirements
Last reviewed 2026-08-01. Facts link to their official source.
To get the Texas Class D water license you need a high school diploma or GED, no work experience, and two approved courses: Basic Water Operations (20 hours) and Resiliency Overview (2 hours). Apply to the TCEQ with the $111 fee, wait for the approval letter, then book your exam.
Every requirement, with its source
- Education
- High school diploma or GED.
- Source: TCEQ Water System Operator Licensing ('Class D Licensing Requirements, Education and Work Experience'.)
- Work experience
- No work experience is required.
- Source: TCEQ Water System Operator Licensing ('Class D Licensing Requirements, Education and Work Experience'.)
- Required courses
- Two approved courses: Basic Water Operations and Resiliency Overview (resiliency training is required for all water operators as of April 1, 2024; RG-637).
- Source: TCEQ Water System Operator Licensing (Page banner 'NEW As of April 1, 2024...' + 'Class D Licensing Requirements, Training Courses'.)
- Course hours and acceptable equivalents
- Course hours in the TCEQ training database: Basic Water Works Operation (course code 92) is 20 hours; Resiliency Overview (code 1664) is 2 hours. Acceptable equivalents are listed by code (self-paced 1426 and 1657; correspondence 321; Spanish 1247; Small Water System O&M 752); hours shown apply to the cited codes.
- Source: TCEQ Training Providers ('TCEQ Approved Training Courses' database rows ('WATER - 20 (CORE) BASIC WATER WORKS OPERATION 92'; 'WATER - 2 | WW - 2 (RESIL CORE) RESILIENCY OVERVIEW (W/WW) 1664') and the 'Training Requirements for a D Water License' table.)
- provisional_class_d
- No diploma or GED yet? A Provisional Water Class D exists: a $74 application, valid for two years, and it must be upgraded to the full Class D by the end of that period.
- Source: TCEQ Water System Operator Licensing ('Provisional Water Class D Licensing Requirements'.)
- Application fee
- Application fee: $111 (Provisional Class D: $74).
- Source: TCEQ Water System Operator Licensing (Class D 'Application and Examination'.)
- Application order
- Pre-approval is required before scheduling: submit the application and fee through OLEA, receive the approval letter, then book a registered CBT center.
- Source: TCEQ Computer-Based Testing ('Pre-approval of your licensing application is required'.)
- License term
- Occupational licenses are valid for three years (see renewability limits for Class D).
- Source: TCEQ Water System Operator Licensing ('Renewal Requirements'.)
- Renewal and its limits
- Most Class D water licenses are not renewable; the page lists six situations (larger or surface-water systems and supervisory distribution roles). Where renewal applies: 30 hours of continuing education including at least 2 resiliency hours.
- Source: TCEQ Water System Operator Licensing ('Class D Exceptions' + 'Continuing Education and Renewal Requirements'.)
The mistake that stalls water applications
Working from advice written before April 2024 and completing only Basic Water Operations. Water operators also need the Resiliency Overview course (2 hours). Finish both, then apply; the approval letter comes before any exam booking.
Before you apply: the order that avoids delays
- Confirm you have a high school diploma or GED. If not, the Provisional Class D path ($74) exists and is valid for two years.
- Finish both required courses: Basic Water Operations (20 hours) and Resiliency Overview (2 hours). Keep the completion records.
- Apply to the TCEQ through the online application (OLEA) and pay the $111 fee.
- Wait for the approval letter. You cannot book the exam before your application is approved.
- Only then contact a registered testing center to book. Ask the center about its own fees and hours.
Every step above is from the cited TCEQ requirements.