DE Wastewater Treatment Operator Training Hour Requirements
Wastewater Treatment Operators in DE must complete 20 hours every 24 months under the Delaware Department of Natural Resources and Environmental Control (DNREC), Division of Water, Surface Water Discharges Section - Board of Certification for Operators of Wastewater Facilities.
Category requirements
| Category | Minimum hours | Maximum counted |
|---|---|---|
| Directly related | 10 | No cap |
| Indirectly related | — | 10 |
Do your hours meet the requirement?
Enter what you've completed this cycle:
When is it due?
Every date that hangs off your renewal — hours deadline, application deadline, and the point of no return.
Expiration dates here are per-operator — enter yours and every deadline that hangs off it is computed for you.
Cycle and deadlines
Two years from issuance; terms are staggered per operator with no statewide renewal date.
The CE window is the two years preceding renewal. Unlike Tennessee, completing hours early does not restart the clock.
Late window: 730 days after expiration. Surface Water Discharge licenses may be renewed up to two years after expiration. Past that the renewal path closes entirely.
You may NOT practice while the certificate is lapsed.
Carryover: None — Nothing banks forward. 7204 sec. 8.1.4 credits only training completed in the two years preceding renewal, and the Digital DNREC submission screen requires each course's completion date to fall within the license year or renewal period. The rule contains no explicit carryover clause; zero is derived from the window, not from a prohibition.
Source: 7 DE Admin. Code 7204 sec. 6.1, 8.1.3, 8.1.5
What Delaware calls these hours
Delaware counts Training Hours (hours of approved training).
Delaware counts plain clock hours. The rule states the requirement in hours and defines no CEU conversion.
Does Delaware track your hours for you?
Yes — Digital DNREC ePermitting holds a record of your hours, and renewal depends on what it shows.
Records and audits
7204 imposes no record-retention duty on the licensee. DNREC retains approved uploads in the operator's Digital DNREC account.
What your completion certificate has to show
- institution name
- instructor signature or name (not required for automated online courses)
- date of the training or course
- course or training name
- the operator's own name
- credit hours received
What happens if you miss it
| What happened | What follows |
|---|---|
| Failure to complete 20 hours of approved training in the preceding two years. | the certificate lapses |
| Less than two years from the date of invalidation. | reinstatement, with the CE still owed |
| More than two years from the date of invalidation. | full requalification — including retaking and passing the exam |
Repeating a course
A directly related course cannot be claimed again in the next consecutive renewal period. Repeat submissions will be denied.
Source: 7 DE Admin. Code 7204 sec. 8.1.4.2
What class does your plant require?
Delaware classifies facilities I-IV by a point system in 7204 Table 1 (11-30, 31-55, 56-75, 76+ points), and an operator must be licensed at or above the facility's class (sec. 4.1). The table is inside the regulation PDF rather than at a standalone URL. Facilities scoring 15 points or less are exempt from the licensed-DRC requirement; on-site disposal systems scoring 10 or less are exempt entirely.
Running more than one plant
Operating multiple facilities requires approval from Board of Certification, with the consent of the Secretary, and at least a Level II license.
Facilities are point-rated by size; you may carry at most 25 points as the responsible operator (20 as a backup).
| Facility type | Design flow | Points | Minimum visits |
|---|---|---|---|
| A | greater than 500,000 gpd | 15 | daily |
| B | 200,001-500,000 gpd | 10 | daily |
| C | 50,000-200,000 gpd | 5 | three times per week |
| D | under 50,000 gpd | 3 | twice per week |
| E | under 20,000 gpd, septic tank primary only | 2 | once every two weeks |
Source: 7 DE Admin. Code 7204 sec. 8.4 and Table 2
Also hold a drinking water license?
Drinking water licensing is handled by a different agency here (Delaware Health and Social Services, Division of Public Health, Office of Drinking Water). Same numbers, different regulator, different approving body, different portal, different approved-course list. A course approved by one is not thereby approved by the other.
Common questions
- How many Training Hours do I need to renew a wastewater treatment operator certificate in Delaware?
- 20 Training Hours every 24 months.
- Do I need more Training Hours for a higher grade?
- No — Delaware requires the same Training Hours at every grade.
- Can I carry extra hours over to the next cycle?
- No — hours cannot be carried forward. Nothing banks forward. 7204 sec. 8.1.4 credits only training completed in the two years preceding renewal, and the Digital DNREC submission screen requires each course's completion date to fall within the license year or renewal period. The rule contains no explicit carryover clause; zero is derived from the window, not from a prohibition.
- Does Delaware keep a record of my hours for me?
- Yes — Digital DNREC ePermitting holds a record, and renewal depends on what it shows. Treat the state's database as the record and confirm each course actually posted.
- What happens if I renew late?
- You have 730 days after expiration to file. Surface Water Discharge licenses may be renewed up to two years after expiration. Past that the renewal path closes entirely. You cannot practice while the certificate is lapsed.
- Can I renew without completing the hours?
- No — Delaware offers no alternative path such as an exam in lieu of CE; completing the hours is the only way to renew.
Related guides
Moving to another state? License reciprocity, state by state
Other states where missing the deadline means retaking the exam: California, Florida, Idaho, Iowa, Missouri, South Carolina, Tennessee
Other states where a state-run record decides your renewal: Alaska, Arizona, Colorado, Florida, Iowa, Missouri, Tennessee, Texas
Hold a reciprocal certificate across the border? Bordering states: New Jersey, Pennsylvania
Stop tracking this in a folder
Save your hours, store every certificate, and get renewal reminders before the deadline — free for your first license.
Start your free ledgerWaterCEU is a record-keeping tool, not compliance or legal advice. Requirements change; always verify current rules with your state board before relying on any total shown here. Source: Delaware Department of Natural Resources and Environmental Control (DNREC), Division of Water, Surface Water Discharges Section - Board of Certification for Operators of Wastewater Facilities (last verified 2026-09-02).
A note on citations: Two live traps in Delaware citations.