Hurricane mold remediation in Bonita Springs

Storm and river flood mold in Bonita Springs, explained

Bonita’s storm record, from Irma to Milton

Few places on this coast have had as many recent floods as Bonita Springs. Here’s what the record shows:

Storm	When	What happened in Bonita Springs
Irma	September 2017	The eye passed over the city after heavy August rain had already raised the river. Historic flooding along the Imperial River, with some homes under water for more than a week.
Ian	September 2022	The National Hurricane Center estimated 8 to 12 feet of flooding above ground at the peak in Bonita Beach and Bonita Springs, with inland high water marks of 5 to 7 feet.
Helene	September 2024	3 to 5 feet above ground from south of Englewood to Bonita Beach, per the National Hurricane Center. Roads flooded in the city.
Milton	October 2024	4 to 6 feet above ground from south of Boca Grande through Bonita Beach, and 3 to 5 feet from Bonita Beach through Marco Island.

In Bonita, Irma’s flooding came mostly from rain and the river. Ian was mainly surge, which the National Hurricane Center’s report says pushed into Estero Bay and up rivers including the Imperial. Helene and Milton brought smaller surges two weeks apart. Each kind of water leaves a different job behind.

When the river rises slowly

The Imperial River drains a broad, flat watershed. After long, heavy rain, water moves across the land slowly and keeps feeding the river for days. That’s why, in 2017, the river kept rising after the rain stopped, and why some residents near it couldn’t get into their homes for more than a week. The City of Bonita Springs noted that the river also rose slowly in the days after Ian.

Water that stands in a home for days changes the remediation plan:

• It wicks higher up the drywall, so flood cuts go higher.
• It soaks through tile grout into the slab, which takes longer to dry.
• It saturates cabinet bases, door frames and the bottom plates of any wood framing.
• Mold can start growing before anyone can get inside to start drying.
• Belongings that sat in it for days are rarely worth saving if they’re porous.

None of this means a house can’t be saved. It means the scope has to match how long the water sat, and the drying has to be measured, not guessed.

When the Gulf comes in fast

Ian’s surge was a different kind of event. It came in within hours, carried salt water, sand and debris, and went out again. Along Bonita Beach, on Little Hickory Island between the Gulf and Estero Bay, it did its worst damage. Newer homes there are often elevated, with the living space above the flood level. But the enclosed ground levels beneath them, used for parking, storage, entries and elevators, took the water. Those spaces need the same drying, cleaning and clearance as any flooded room, because mold that starts there can reach the upstairs through stairwells, elevator shafts and ductwork.

Inland, the surge moved up the Imperial River and into low neighborhoods near it. For some of those homes, it was their second flood in five years.

The first days after the water goes down

1. Wait until the water has receded and the power to wet areas is off. Flood water near the river carries sewage and bacteria, so avoid wading through it.
2. Photograph and video every room, the waterline, the garage and damaged belongings before anything is moved.
3. Get remaining water out and move soaked rugs, cushions and boxes outside.
4. Run dehumidifiers once there’s power. Keep the AC off if the air handler or ducts took on water.
5. Call your insurer, and if a disaster has been declared, apply at DisasterAssistance.gov.
6. Ask any remediation company how testing and clearance will be handled before you sign.

The EPA advises drying water-damaged areas within 24 to 48 hours to prevent mold growth. When river water keeps you out of the house for days, that clock has already run out, which is one more reason to document everything and start drying the moment you can.

Homes that flooded before

If your home was repaired after Irma and flooded again in Ian, it’s worth asking what was behind the walls the second time. Materials that were dried and kept in 2017 may have gotten wet again. Cavities that weren’t fully cleaned the first time may hold old contamination. When we open a wall in a home with this kind of history, we look past the newest layer. If a family member has health concerns their doctor connects to mold, our page on mycotoxin remediation in Bonita Springs covers the next step.

Independent testing and clearance

Under Florida Statute 468.8419, a mold assessor may not remediate a structure it assessed within 12 months, and a remediator may not assess or clear one it remediated within 12 months. Certified Division I contractors are the exception. On our Bonita Springs storm projects, an independent licensed mold assessor inspects and samples the home, writes the scope, and performs clearance testing. We do the remediation to that protocol. The company testing your home has no reason to find more mold than is there, and the company removing it can’t grade its own work.

Paperwork for insurance and FEMA

We keep dated photos, daily moisture readings, the assessor’s reports, an itemized list of removed materials and belongings, and the final clearance report. FEMA’s mold guidance says NFIP flood policies won’t cover damage from mold, and the policy also excludes mold caused by failing to inspect and maintain the property after the water recedes. Ask your adjuster in writing how your claim will be handled. Records still matter for the flood damage itself and for any other coverage you have. FEMA’s Individuals and Households Program may help with disaster-caused mold when it makes a home unlivable.

Our Southwest Florida team serves Bonita Springs and the rest of Lee County, along with Collier and Charlotte counties.