If you own a pool, the period between Memorial Day and Labor Day is when almost everything that goes wrong, goes wrong. Inspect each layer of defense before the first warm weekend and you avoid the rest. This is the checklist I work from.
It’s organized in the order you should walk it: barriers first, then the water, then the equipment, then the people. Don’t skip down to the chemical tests without checking the gate latch — pool drownings happen when layers fail, and the chemical layer almost never matters until the barrier layer already has.
Barriers and access (1–6)
The first layer is keeping unsupervised people — especially kids under 5 — out of the water entirely.
- Pool fence is at least 48 inches tall on every side. Most state codes set this as the minimum. Some require 54 or 60. Look up your state and county code; don’t rely on what the previous owner installed.
- No fence opening larger than 4 inches anywhere. Pickets, decorative cutouts, gaps under the fence — all need a 4-inch maximum at every point a child could try to squeeze through.
- Self-closing, self-latching gate. Open the gate, let go, and walk away. It should close and latch on its own without you touching it. If it doesn’t, the spring or latch is worn out.
- Gate latch is at least 54 inches above ground. This is the height most building codes require for the latch handle. The intent is that a small child can’t reach up and operate it. If your latch is lower, it doesn’t matter how well it closes.
- No climbable objects within 36 inches of the fence. Patio furniture, planters, the AC condenser, the dog house, the trash can on bulk-pickup day. If a four-year-old can stand on it and reach the top of the fence, it’s a problem.
- House doors leading to the pool area have alarms or self-closing locks. In many states this is required when the house itself forms one side of the pool enclosure. Battery-powered door alarms are about $20 each and are usually faster to install than retrofitting locks.
Pool surface and structure (7–11)
The pool itself has to be in a state where someone in it can get out and someone out of it isn’t drawn in.
- Anti-entrapment drain covers, undamaged, installed correctly. Federal law (the Virginia Graeme Baker Act) has required compliant drain covers on every public pool since 2008. Residential pools aren’t always required to comply, but the covers cost $40–$80 and stop the worst drowning mechanism that exists. If your drain cover is flat or cracked, replace it.
- No exposed sharp tile edges, broken coping, or missing grates. Walk the waterline. A broken tile becomes a foot laceration; a missing skimmer grate becomes a foot entrapment.
- Ladder rungs and handrails secure. Grab them, pull on them hard. If they wiggle, retighten or replace the anchor.
- Pool deck not slick. Walk barefoot around the pool while it’s wet. If you slip anywhere, address that surface now — algae, smooth stone polish, soap residue from the pump room.
- No standing water in the pool cover. A cover sagging under rainwater can collect 100+ gallons. A child who falls on it can be trapped beneath. Pump it off and tighten the cover, or remove the cover for the season.
Water chemistry and visibility (12–15)
You can’t save someone you can’t see.
- Water is visibly clear. Stand at the deep end and look at the drain. If you can’t see it clearly, the water is too cloudy and a submerged swimmer would be invisible. Address filtration and chemistry until it’s clear.
- Free chlorine between 1.0 and 3.0 ppm. Below 1.0, you’re not actually sanitizing. Above 5.0, swimmers get irritated eyes and skin.
- pH between 7.2 and 7.8. Off pH makes chlorine ineffective and water uncomfortable.
- Cyanuric acid (stabilizer) under 50 ppm. Above this and chlorine stops working in sunlight. A lot of pool owners have over-stabilized water and don’t realize it.
Safety equipment within reach (16–19)
Keep these on the deck, not in the shed.
- U.S. Coast Guard-approved life ring or throwable cushion. Mounted on a wall, not buried in a pool toy bin. Should be within 10 feet of the deepest area.
- Shepherd’s crook (reaching pole) at least 12 feet long. Long enough to reach the center of the pool from the side. Lightweight aluminum is fine.
- First aid kit, weatherproof container. Include a CPR mask with a one-way valve. The kit lives outside, not inside.
- Phone charged and accessible. A poolside cordless or your phone in a waterproof case. In an emergency you cannot run inside to find a phone.
People and protocols (20–25)
The barrier layer fails. The equipment layer fails. Trained adults are the last layer.
- At least one adult on premises is current on CPR. Certifications expire every two years. Check the date on the card. If you’re not current, the Red Cross runs $90 in-person courses; online-only courses are not equivalent.
- All adults who supervise know how to spot drowning. Real drowning is silent and lasts 20–60 seconds. It doesn’t look like television. Brief every adult who will ever watch kids in your pool — see the guide on drowning signs.
- House rules posted at the pool entrance. Five lines, max. “No running. No diving in the shallow end. No swimming alone. Glass stays outside the fence. Phone the designated adult before entering.” Make it a sign, not a memory test.
- Designated water-watcher for every group event. One adult, sober, no phone, no book, doing nothing but watching swimmers. Hand off the role every 15–20 minutes. This is the single most effective change you can make if you host pool gatherings.
- Family pool safety plan written and discussed. Who calls 911. Who pulls the swimmer out. Who starts CPR. Who herds other kids away from the scene. Practice once. See the family pool safety plan template.
- All swimmers know your specific pool’s hazards. Where the shallow end becomes the deep end. Where the drain is. Where to climb out fast if something happens.
What to do if something on the list fails
If a high-stakes item fails — fence won’t latch, drain cover is cracked, no CPR-current adult — don’t open the pool. The temptation to “we’ll fix it this weekend” is how the worst things happen. Fix it first, then swim.
For everything else, prioritize. A wiggly handrail can wait a week; cloudy water can wait until tomorrow’s shock treatment; a missing life ring needs an Amazon order today.
Run this checklist twice a year
Once at season open, once mid-summer. Pool fences sag in heat. Chemicals shift after July 4th parties. Self-closing gate springs wear out. A May-clean pool is not automatically a July-clean pool.
Print the list, walk the pool with it in hand, check each box. The whole pass takes under an hour and is the highest-leverage thing you can do for your family’s safety all year.