Key points
- CDC: a four-sided fence at least 4 feet (about 1.2 m) high that fully encloses the pool and separates it from the house, with self-closing, self-latching gates.
- Free chlorine at least 1 ppm (2 ppm with stabiliser), pH 7.0 to 7.8, tested at least twice a day.
- Never mix chlorine products with acid (toxic gases), and add the chemical to water, not the reverse.
- Pool pumps and underwater lighting are work for a licensed electrician with RCD protection.
A home pool is a pleasure, but it is also the most dangerous spot in the house for children, and a source of damp and leaks if built carelessly. This guide gathers the key safety and water-quality rules from the U.S. Centers for Disease Control and Prevention (CDC), with technical questions for the contractor.
1) Drowning safety first
- A four-sided fence at least 4 feet (about 1.2 m) high that fully encloses the pool, with self-closing and self-latching gates1. The point is a fence that separates the pool from the house itself, not just the plot boundary wall.
- A designated responsible adult supervising children closely and constantly in or near the water, with no phone or reading, because drowning happens quickly and quietly1.
- Swimming lessons reduce drowning risk but do not replace supervision, and CPR skills can save a life before paramedics arrive1.
2) Water quality: chlorine and pH
| Measure | CDC value |
|---|---|
| Free chlorine (pool without stabiliser) | At least 1 ppm2 |
| Free chlorine (pool with cyanuric acid stabiliser) | At least 2 ppm2 |
| Hot tubs | At least 3 ppm, and stabiliser is not recommended in them2 |
| pH | 7.0 to 7.82 |
| Testing frequency | At least twice a day, more with heavy use2 |
For accuracy use a DPD test kit; strips are available but less accurate2.
3) Pool chemicals: rules not to break
- Wear safety goggles and gloves, read the product label before each use, and handle it in a well-ventilated area3.
- Never mix chlorine products with acid, which could create toxic gases, and never mix different pool chemicals with each other or any other substance3.
- If the label says to pre-dissolve: add the chemical to water, never water to the chemical, because a violent, potentially explosive reaction can occur3.
- Open one container and close it before opening another, and minimise dust, fumes and splashes3.
Practical advice: store chemicals in their original containers, out of children's reach and the sun, and apart from each other. See also DIY safety.
4) Technical questions before building
These are practical questions for the owner, not a structural specification; pool structural design is an engineer's job.
- Soil: was the soil investigated? A leaking pool on expansive soil or sabkha can move nearby foundations. See soil and foundations and water around the building.
- Waterproofing: which system, and will it be fill-tested before finishing? See waterproofing under tiles.
- Tiles, adhesive and grout: are they suitable for permanent immersion and pool chemicals? See tile adhesive and grout.
- Pool surround: what is its wet slip resistance? See tile specs.
- Electrics: pumps and underwater lighting are licensed electrician work with RCD protection. See breakers and RCDs.
- Plant room and drainage: where do filter backwash and pool emptying water go?
- Fence and gate: are they in the contract? (Section 1 above)
5) Water circulation, filtration and structural details in plain terms
A general explanation so you can read a quote and ask the right questions; sizes and equipment are set by the designer and equipment supplier.
| Part | What it does | Ask about |
|---|---|---|
| Suction points (main drain, skimmer or overflow channel) | Draw water to the plant room | Anti-entrapment main drain covers, and not a single exposed drain |
| Pump | Circulates the water | Daily run time, noise, and a location away from bedrooms |
| Filter (sand, cartridge or other) | Traps debris | How it is cleaned or backwashed, and where the wash water goes |
| Sanitation (manual chlorine or a device) | Kills germs | How chlorine and pH are set and tested regularly (Section 2)2 |
| Return inlets | Distribute clean water | Placement that leaves no stagnant corners |
| Balance tank (overflow pools) | Receives water spilling over the edges | Capacity, location and cleaning |
Structural details to see on the drawings
- The concrete shell is designed by an engineer, with reinforcement and waterproofing details. See Concrete and Rebar.
- Joints between the pool shell and the surrounding deck, and a deck drainage route away from the pool and foundations.
- The buried pipe route between the pool and plant room, pressure-tested before burying. See Pipes.
- Earthing and bonding of metal parts and underwater lighting: work for an engineer and licensed electrician. See Earthing.
Sources
The number next to a statement points to its source in this list. Sources back the general information; anything marked “practical advice” is editorial experience, not a quoted source. Anything that affects safety, structural design or electrical installations needs a licensed professional, and in Saudi Arabia the binding reference is the Saudi Building Code.
- 1Preventing Drowning — U.S. Centers for Disease Control and Prevention (CDC)
- 2Home Pool and Hot Tub Water Treatment and Testing — U.S. Centers for Disease Control and Prevention (CDC)
- 3Use Pool Chemicals Safely (poster) — U.S. Centers for Disease Control and Prevention (CDC)