Utah Administrative Code R392-302 (public pools)
Utah pool chemical log requirements
What a Utah public or semi-public pool must test, the legal ranges, what goes in the log and how long to keep it — every rule with the section of the code. Checked September 19, 2026.
- Test
- DailyR392-302-33(2)(c); -24(2)(a)
- Keep the log
- 2 operating seasonsR392-302-33(2)(d)
- Rules
- Public poolUtah Administrative Code R392-302 (public pools)
2.0 to 10.0 ppm · at pH 7.2–7.6; at pH 7.7–7.8 the minimum is 3.0
7.2 to 7.8
no more than 0.5 ppm · above 0.5 it must be reduced
no more than 100 ppm
Public pool daily log · one month, letter landscape · columns for FC, CC, pH
Sources (1) — every number above is cited
- R392-302 — Design, Construction and Operation of Public Pools — Utah Department of Health and Human Services, Utah Administrative Code
Utah's minimum free chlorine rises when pH is above 7.6, and again when the water is stabilized.
Cyanuric acid is banned in new or altered indoor pools, spas and therapy pools.
Legal ranges
| Parameter | Pool | Spa | Source |
|---|---|---|---|
| Free chlorine | 2–10 ppm | 3–10 ppm | R392-302-25, Table 2 |
| pH | 7.2–7.8 | 7.2–7.8 | R392-302-25 |
| Combined chlorine | at most 0.5 ppm | at most 0.5 ppm | R392-302-25 |
| Cyanuric acid | at most 100 ppm | at most 100 ppm | R392-302-25 |
| Water temperature | — | at most 104 °F | R392-302-25 |
Testing frequency
Daily (R392-302-33(2)(c); -24(2)(a)). Records must show daily testing of the disinfectant residual and pH, and a daily record of water clarity. With an automated controller, poolside tests verify its calibration at least weekly.
What the log must show
- Disinfectant residual and pH, daily
- Water clarity, daily
- Controller verification tests
Keep it 2 operating seasons (R392-302-33(2)(d)). Written or digital records, easily accessible to the local health officer, kept for at least two operating seasons.
What the inspector checks
- Two operating seasons of records, written or digital
- Free chlorine above the minimum for the pH, at most 10 mg/L
- The certified operator's certificate, posted
- An automated controller on every spa
When the pool must close
- The rule sets no chemistry threshold for immediate closure; the health officer may close a pool, for example for a persistent Cryptosporidium threat
Who may operate the pool
A qualified pool operator certified or recertified by a program accepted by the department, with the certificate posted; on site or reachable within 2 hours, and visiting at least weekly.
Utah's minimum free chlorine rises when pH is above 7.6, and again when the water is stabilized.
Cyanuric acid is banned in new or altered indoor pools, spas and therapy pools.
Log Utah readings on your phone
Every reading checked against the ranges above, the corrective action recorded, and the Utah sheet filled for the inspector.
Sources
- R392-302 — Design, Construction and Operation of Public Pools — Utah Department of Health and Human Services, Utah Administrative Code
This page summarizes the state code; your county or city health department may add requirements. It is not legal advice.