Pool Operator PrepPool-math readiness console Practice pool math

New Hampshire · NH

Pool operator requirements in New Hampshire

Quick answer

Does New Hampshire require a certified pool operator?

Yes. New Hampshire requires every public bathing facility to be operated under the supervision of a certified pool operator, who must personally visit the facility at least once a week and be reachable by phone otherwise. The rule is Env-Wq 1100, adopted under RSA 485-A:26 and administered by the Department of Environmental Services.

Last reviewed 2026-07-28

Certified operator required?
Required statewide Env-Wq 1100 requires a certified pool operator (CPO) to be responsible for the overall operation of a public bathing facility (PBF). The CPO must personally visit the PBF at least once a week to confirm it is operated safely and sanitarily, and must be reachable by telephone whenever not on site. A separate, trained day-to-day operator (defined in the rule as knowledgeable in sanitation, safety, and maintenance) can run daily testing and recordkeeping between CPO visits.
Certifications accepted
CPO (PHTA), State-approved course Env-Wq 1106 requires training from an approved program dedicated to the operation of public bathing facilities; DES points operators to the Pool and Hot Tub Alliance (PHTA) for in-person and virtual Certified Pool Operator (CPO) courses offered in New Hampshire. The rule allows the department to approve other equivalent training programs.
Governing agency
New Hampshire Department of Environmental Services (DES), Water Division
Regulation citation
RSA 485-A:26 (Swimming Pools and Bathing Places); New Hampshire Code of Administrative Rules, Env-Wq 1100 (Public Bathing Places), Part Env-Wq 1106 (Certified Pool Operator Training Requirement)
Renewal / operator presence
New Hampshire's rule requires a currently certified operator responsible for the facility rather than stating its own renewal cycle; whichever certifying body issues the credential (the CPO runs a 5-year national cycle) sets the recertification schedule the PBF must maintain.

State-code numbers that differ from the national body of knowledge

Requirement New Hampshire value Notes
CPO weekly visit At least once a week, in person Env-Wq 1106. The CPO must also be available by telephone to on-site staff whenever not personally present.
pH 7.0 to 7.8 Env-Wq 1100, chemical and physical water quality standards.
Free available chlorine (swimming, wading, special recreation pools) 1 to 5 mg/L, or free available bromine 2 to 10 mg/L Env-Wq 1100. Therapy pools and spas: 2 to 10 mg/L chlorine or bromine.
Combined chlorine Not to exceed 0.5 mg/L Env-Wq 1100.
Cyanuric acid Not to exceed 50 mg/L Env-Wq 1100.
Total alkalinity 60 to 180 mg/L Env-Wq 1100.
Disinfectant and pH testing frequency Before opening and every 4 hours during operation Env-Wq 1104 (testing, supervision, and safety).

New Hampshire is a clear “yes” in this matrix, with a distinctive feature: the rule names the required in-person cadence for the certified operator, not just the certification itself.

Does New Hampshire require a certified pool operator?

Yes. New Hampshire’s public bathing facility rule, Env-Wq 1100, adopted under RSA 485-A:26, requires every public bathing facility (PBF) to be operated under the supervision of a certified pool operator (CPO) responsible for its overall operation. The rule is specific about presence: the CPO must personally visit the facility at least once a week and must be reachable by telephone to on-site staff whenever not physically present. That is a tighter, more concrete standard than most states set, which typically require certification without specifying a visit cadence.

Between CPO visits, day-to-day duties fall to a trained on-site “operator,” a role the rule defines separately as someone trained in the sanitation, safety, and proper maintenance of the facility and its equipment. In practice, a small PBF’s CPO and day-to-day operator are often the same person; larger facilities may split the roles.

Which certification counts

Env-Wq 1106 requires training from an approved program dedicated to the operation of public bathing facilities. New Hampshire’s Department of Environmental Services (DES) directs operators to the Pool and Hot Tub Alliance (PHTA) for its Certified Pool Operator course, offered both in person and virtually within the state, and the rule allows the department to approve equivalent programs. Compare the CPO with its main national alternative in our CPO vs AFO guide, and see how to become a CPO for the course-and-exam path.

The governing law, in plain terms

  • RSA 485-A:26 is the statute: no person may install, operate, or maintain a public bathing place without DES’s prior approval of its design.
  • Env-Wq 1100, the Public Bathing Places rules, carries out that statute in detail, including the certified-operator requirement at Env-Wq 1106.
  • New Hampshire Department of Environmental Services (DES), Water Division, is the agency: approvals, registrations, inspections, and the CPO requirement all run through DES.
  • Testing cadence: a PBF must test disinfectant residual and pH before opening and at least every 4 hours during operation.

How to comply in practice

  1. Name a certified pool operator, trained through PHTA or another DES-approved program, responsible for the facility.
  2. Keep the weekly visit on a real schedule, and make sure the CPO is reachable by phone at all other times.
  3. Test on the required cadence: before opening and every 4 hours, recording disinfectant residual and pH.
  4. Hold the numbers: pH 7.0 to 7.8, free chlorine 1 to 5 mg/L (bromine 2 to 10 mg/L), combined chlorine no more than 0.5 mg/L, cyanuric acid no more than 50 mg/L, total alkalinity 60 to 180 mg/L.

Keep studying

The chemistry and math New Hampshire enforces are the same core skills the national CPO exam tests. Drill them on the pool-math trainer, take the free practice test, or use the pool chemistry calculator for turnover and dosing. To compare New Hampshire with other states as we verify them, use the state requirements matrix.

Frequently asked questions

Does New Hampshire require a certified pool operator?
Yes. New Hampshire's public bathing facility rule, Env-Wq 1100, requires a certified pool operator responsible for the facility's overall operation. That CPO must personally visit the facility at least once a week and be reachable by phone at other times, under authority granted by RSA 485-A:26.
Which agency regulates public pools in New Hampshire?
The New Hampshire Department of Environmental Services (DES), Water Division, administers the Env-Wq 1100 public bathing facility rules under RSA 485-A:26. DES approves facility design, issues registrations, and oversees the certified-pool-operator requirement.
How often must a New Hampshire pool's CPO visit in person?
At least once a week. Env-Wq 1106 requires the certified pool operator to personally visit the public bathing facility on that schedule to confirm safe, sanitary operation, and to be reachable by telephone to on-site personnel whenever not physically present.
Where can I get CPO training accepted in New Hampshire?
New Hampshire's rule requires training from an approved program; the Department of Environmental Services points operators to the Pool and Hot Tub Alliance (PHTA) for its Certified Pool Operator course, offered both in person and virtually within the state.

Primary sources

Practice pool math