MO Wastewater Treatment Operator Renewal Hour Requirements

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.

Cycle and deadlines

Three years from issuance; dates are staggered per operator with no statewide renewal date.

All 30 hours must be obtained before the expiration date printed on the certificate - 10 CSR 20-9.030(4)(A). The CE window and the certificate term are the same three years.

Late window: 60 days after expiration.

Carryover: None — Verified zero, not merely unstated. 10 CSR 20-9.040(13): renewal credit is valid only for the renewal period in which it was earned, and credit in excess of the required hours may not be carried into any subsequent renewal training period.

Source: 10 CSR 20-9.030(4)(A)-(G)

Holding more than one certificate

Each certificate carries its own 30-hour requirement - the wastewater figure is set by 10 CSR 20-9.030(4)(B) and the drinking water figures sit in a separate chapter (10 CSR 60-14). One course session can carry approved hour values in more than one discipline at once, so a course approved for both wastewater and drinking water appears to feed both totals.

Source: 10 CSR 20-9.030(4)(B); MoDNR Operator Certification Training calendar

Will this course count?

Missouri approves individual course sessions, not providers. Each approval carries a course identification number and a stated credit amount, published per discipline on MoDNR's training calendar - so the same course can be worth 6.0 WW and 6.0 DW, or 6.0 WW and nothing else, or 4.0 DW and nothing for wastewater.

Check the course on the state’s approved-course list — approval is per course, not per provider.

10 CSR 20-9.040(9): a course may not be advertised as approved for renewal credit until MoDNR has issued formal approval, and any advertisement claiming approval must state the course identification number and the credit amount.

What Missouri calls these hours

Missouri counts Renewal Hours (hours of department-approved renewal training).

Does Missouri track your hours for you?

Yes — MoDNR Operator Certification System (OpCert) holds a record of your hours, and renewal depends on what it shows.

Records and audits

Each certified operator is responsible for documenting his or her own training, and must submit suitable documentation of the 30 hours before the certificate is renewed. The rule assigns the duty and states no retention period or start date.

What happens if you miss it

Repeating a course

Rules in motion

MoDNR transitions to standardized operator certification exams delivered under its existing contract with Water Professionals International, with a published crosswalk from Missouri's A-D and DS levels to the national classes. CAFO exams are exempt. Existing exams remain available until the switch.

Common questions

How many Renewal Hours do I need to renew a wastewater treatment operator certificate in Missouri?

30 Renewal Hours every 36 months.

Do I need more Renewal Hours for a higher grade?

No — Missouri requires the same Renewal Hours at every grade.

Can I carry extra hours over to the next cycle?

No — hours cannot be carried forward. Verified zero, not merely unstated. 10 CSR 20-9.040(13): renewal credit is valid only for the renewal period in which it was earned, and credit in excess of the required hours may not be carried into any subsequent renewal training period.

I hold more than one certificate — what does that do to my hours?

Each certificate carries its own 30-hour requirement - the wastewater figure is set by 10 CSR 20-9.030(4)(B) and the drinking water figures sit in a separate chapter (10 CSR 60-14). One course session can carry approved hour values in more than one discipline at once, so a course approved for both wastewater and drinking water appears to feed both totals.

Does Missouri keep a record of my hours for me?

Yes — MoDNR Operator Certification System (OpCert) holds a record, and renewal depends on what it shows. It can lag or miss what you've earned, so keep your own certificates regardless.

What happens if I come up short on hours?

The consequence is full requalification — including retaking and passing the exam.

What happens if I renew late?

You have 60 days after expiration to file. The late window moves the application only — it does not extend the deadline for your hours.

Can I renew without completing the hours?

No — Missouri offers no alternative path such as an exam in lieu of CE; completing the hours is the only way to renew.

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