Does Colorado require a certified pool operator?

Colorado requires public pools to have a certified operator on staff or under contract, and accepts CPO, AFO, NSPI Tech I and other approved courses. The state rule, 5 CCR 1003-5, is enforced by local public health agencies, and some of them have adopted the CDC's Model Aquatic Health Code instead.

Do you need a licence to run a pool service business in Colorado?

We found no statewide pool service licence. Some cities require trade registrations for particular work, such as Denver's plumbing registration. Denver's operator requirements weren't confirmed, so check with your city or county health department.

CPO certification by state

CPO Certification in Colorado

Colorado requires public pools to have a certified operator on staff or under contract, and accepts CPO, AFO, NSPI Tech I and other approved courses.

Who sets the rules

The state rule, 5 CCR 1003-5, is enforced by local public health agencies, and some of them have adopted the CDC's Model Aquatic Health Code instead.

What the rules say

The certified operator can be on the pool's staff or work under contract.
Apartment and condominium pools count as private under the state rule, so it doesn't apply to them.
Local agencies can adopt the Model Aquatic Health Code instead of the state rule. Broomfield adopted it at the end of 2025.

Running a pool service business

We found no statewide pool service licence. Some cities require trade registrations for particular work, such as Denver's plumbing registration.

Denver's operator requirements weren't confirmed, so check with your city or county health department.

Getting certified in Colorado

CPO classes run in person, as a blended online course with a shorter in-person day, and in formats that keep the exam proctored. The CPO certification guide explains the formats, typical costs and renewal, and how to find a class near you.

Questions

Does Colorado require a certified pool operator?: Colorado requires public pools to have a certified operator on staff or under contract, and accepts CPO, AFO, NSPI Tech I and other approved courses. The state rule, 5 CCR 1003-5, is enforced by local public health agencies, and some of them have adopted the CDC's Model Aquatic Health Code instead.
Do you need a licence to run a pool service business in Colorado?: We found no statewide pool service licence. Some cities require trade registrations for particular work, such as Denver's plumbing registration. Denver's operator requirements weren't confirmed, so check with your city or county health department.

Other states

Arizona California Florida Georgia Illinois Massachusetts Nevada New Jersey New York North Carolina South Carolina Texas Utah

The full CPO certification guide

For pool service companies

Readings, Doses and Service History From Every Stop

Pool Runs gives every technician a mobile app that logs the readings, works out the doses for each pool, and keeps the service history, even offline in a backyard with no signal.