Storm and Flood Recovery Visit Standard

Purpose

The first visit after a storm is not a cleaning call, and treating it as one is how technicians get hurt and shells get destroyed. The water is the least urgent thing on the property: what matters is whether a conductor is down in the yard, whether the pad went under, whether the ground around the shell is saturated, and what came in with the runoff.

This procedure guarantees the hazards are assessed from outside the fence before anyone opens a gate, that nobody lowers the water on a saturated site, that suction outlets are proved before a pump runs, and that submerged equipment is evaluated rather than switched on to see what happens.

Scope

Covers the first response visit after wind, heavy rain or flooding at a residential or small semi-commercial pool: the arrival assessment, the no-drain rule, contamination classification, debris removal, the suction outlet check, restart, and the record the customer's insurer will ask for.

It does not cover algae remediation afterwards (green pool recovery program), the deliberate partial drain and its discharge rules (partial drain and dilution decision), or the fecal and vomit protocol (illness incident SOP). Structural assessment of a cracked or displaced shell is an engineer's, not yours.

Roles and responsibilities

The three things a storm does that the water does not show

The middle one is the trap. The instinct after a flood is to pump the pool down to clear debris and get the level back, and that is exactly when groundwater outside the shell is highest. Water in the pool is what holds the shell down: do not lower it on a saturated site, on any shell, until the drain SOP's hydrostatic gate has been worked.

Procedure

1. Assess from outside the barrier before opening anything. Walk the perimeter for downed or sagging conductors, a service drop pulled off the house, leaning poles, a displaced gas meter or a smell of gas, and debris resting on the fence. Accept when the whole enclosure has been viewed from outside and none of those are present. Wrong is opening the gate while looking at the pool. Stop rule: treat every downed line as energized, keep everyone at least 35 ft from it and from anything it touches (fence, water, vehicle), call the utility and 911, and do not touch that fence's gate; a gas smell means everyone leaves on foot and calls from the street. Hazard is the ground too, so stay off saturated slopes and out of any low area still holding water, which can be energized and contaminated at once.

2. De-energize the pad from a dry standing position and leave submerged equipment off. Accept when the pool equipment disconnect is open, operated from dry ground, before anyone walks the pad. Wrong is reaching a disconnect across standing water. Stop rule: any motor, controller or transformer showing a silt line, a water mark above its conduit entry or water inside its enclosure is not energized at all, gets tagged, and goes to evaluation or replacement per the manufacturer and the NEMA guidance on water-damaged electrical equipment. Hazard is standing water at an energized pad, so nothing is opened, reset or plugged in until the disconnect is proved open from dry ground; where a meter is used, work is by a qualified person under 29 CFR 1910.333(b)(2), proved on a known live source before and after per NFPA 70E-2021, 120.5.

3. Read the shell and the water level, and do not lower the water. Look for new cracks, displaced coping, a deck that has settled or heaved, voids under the deck edge, and a tile line no longer running level. Accept when the water is at or above its normal operating level and the shell shows no new displacement. Wrong is pumping the pool down to reach debris. Stop rule: a shell that has visibly moved is an engineering call and a hold on all work, and if the customer has already drained it, refilling to normal level is the first action rather than the last. Hazard is the ground, so stay off a settled deck edge and off coping above any void.

4. Classify what came in and post the do-not-swim before touching the water. Accept when the source is written down as rainwater only, yard and street runoff, or floodwater carrying sewage or fuel, and a do-not-swim notice is physically at the pool with the customer told. Wrong is judging by clarity, since the worst inflow is often the least cloudy. Hazard is the contact, ingestion and inhalation routes together: gloves and eye protection, nothing eaten, drunk or smoked on site, hands washed before leaving, and no pressure washing or vacuuming to waste of contaminated silt, which puts that material into the air. Aerosol-generating work needs respiratory protection under a written program per 29 CFR 1910.134, and without one the crew does not do that work.

5. Remove debris from the deck, pump off, nobody in the water. Take heavy material out with a leaf rake and net from a stable stance and bag it rather than piling it on the deck. Accept when the surface and visible floor are clear enough to see the main drain and the suction outlets. Wrong is skimming with the pump running, which draws litter and grit into a strainer and filter that are about to be needed. Hazard: never enter the water, check for limbs still lodged overhead before working under them, and keep a telescopic pole clear of any overhead conductor, since the pole is a conductor with a person on the end of it.

6. Prove the suction outlets before any pump runs. Inspect every main drain and suction outlet cover for cracks, displacement or a missing cover, from the deck. Accept when every outlet has a cover present, intact and fastened. Wrong is assuming an outlet is fine because the pool was fine last week: a storm moves gravel and limbs across a floor and covers are broken by exactly that. Stop rule: a missing, cracked or loose cover means the pool stays closed and the pump stays off until it is replaced, per the drain cover and entrapment SOP. Hazard: nobody enters the water to look, because an unblocked outlet with a pump running is an entrapment mechanism, not a repair.

7. Restart in sequence, and prove the protective functions before you leave. Clear the strainer basket, prime the pump, open the filter air relief until a solid stream comes out, then close it, close the disconnect and start the system. Accept when the pump primes and holds prime, the tank comes up to normal operating pressure with no leak, and the pool light and receptacle GFCI devices trip and reset on test. Wrong is a restart with the air relief shut, which pressurizes trapped air behind a filter lid. Hazard is that pressurization and that re-energization together, so stand clear of the plane of the filter lid and band while pressure comes up, keep the customer off the pad, and if any device will not reset, leave it off and refer it to an electrician.

8. Test the water, reconcile it against the dilution, and write the report the same day. Accept when free chlorine, pH, total alkalinity, cyanuric acid and salt where applicable are recorded, and the movement in each is explained by the volume that came in. Wrong is dosing to target without asking where the numbers went, which hides how much water actually exchanged. Stop rule: contamination classified as sewage at step 4 goes to the illness incident SOP for its disinfection protocol and closure time rather than a routine shock, and the pool stays posted until that is complete. Hazard is the dosing: one correction at a time per the out-of-range response SOP, and never acid and hypochlorite in the same pass.

The record this produces

• Arrival: photographs of the enclosure from outside, the pad, the shell, the deck edge and the water, with times.
• Hazards found: conductors, gas, submerged equipment, and who was called.
• Shell and level: level as found relative to normal, new cracking or displacement, whether a hold was placed.
• Contamination and outlets: classification, what was posted, when the customer was told; every cover checked and its condition.
• Restart: prime, operating pressure, GFCI results, anything left off and why.
• Water: readings with times, the reconciliation against the water that came in, and what was dosed.

Worked pass: an overflowed pool, a clean-looking pad, and a motor that stayed off

Residential saltwater pool, nominal 20,000 gallons, about 600 sq ft of surface, sheet flow across the back yard during the event.

Steps 1 to 3. Perimeter clear, no conductors down, no gas smell. Disconnect opened from dry ground. Water sits about 4 in above its normal line, no new cracking, coping level along the tile line. Nobody lowers it: 600 sq ft at 4 in is 600 times one third of a foot, which is 200 cu ft, and at 7.48 gallons per cubic foot that is about 1,500 gallons standing above normal on a site whose ground is saturated.

Step 4. Inflow classified as yard and street runoff, no sewage indication and no fuel sheen. Do-not-swim posted at the gate and the customer told at the door.

Steps 5 and 6. Two contractor bags of leaf and small limb debris out by net, pump off throughout. Both suction outlet covers present, intact, fastened.

Step 7 FAILS. The pump motor carries a silt line about an inch above its conduit entry and silt inside its rear cover vents, so it was submerged even though the pad is dry now and everything looks normal. This step's acceptance requires the system to start and hold, and it is not attempted: the stop rule from step 2 governs. The motor is tagged, the disconnect stays open, the customer is told the same afternoon that a submerged motor is evaluated or replaced rather than switched on, and the shop quotes a replacement with the manufacturer's position and the NEMA guidance attached. The filter, heater and cell sit above the silt line and are photographed as evidence.

Step 8, run on the sample rather than on the system. Free chlorine 0.4 ppm, pH 7.1, cyanuric acid 28 ppm, salt 2,100 ppm against the pool's 3,000 ppm target.

Now the reconciliation, which is why this step exists. If the only exchange were the 1,500 gallons still visible as level rise, salt would read 3,000 times 20,000 divided by 21,500, about 2,790 ppm. It reads 2,100. Taking the rainwater as salt-free, 2,100 from a 3,000 baseline needs 1 minus 2,100 divided by 3,000, which is 30 percent of the water exchanged. The visible rise is 1,500 gallons against the nominal 20,000, or 7.5 percent. The other 22.5 percent went over the coping while inflow kept coming: the level you find understates the exchange on any pool that overflowed.

That changes what happens next. Salt at 2,100 ppm is below the minimum printed on the cell, so the cell would fault or run hard if the system were restarted as is, and stabilizer at 28 ppm puts the chlorine floor at 28 times 0.075, about 2.1 ppm, rather than the figure on last week's ticket. Both go on the return-visit plan with the motor, and neither is dosed on a pool with no circulation.

References

• NEMA guidance on evaluating water-damaged electrical equipment, for the submerged motor and control decision at steps 2 and 7.
• 29 CFR 1910.333(b)(2) for electrical work practices by a qualified person, and NFPA 70E-2021, 120.5 for the live-dead-live instrument check.
• 29 CFR 1910.134 for the written respiratory protection program that any aerosol-generating cleanup of contaminated material requires.
• The salt cell label for the unit's minimum operating salt concentration, which varies by manufacturer.
• See related: Drain Cover and Entrapment Compliance Check; Fecal and Illness Incident Response; Green Pool Recovery Program; Partial Drain and Dilution Decision.