A typical scenario (an illustrative example based on common situations, not a review from a specific customer)

Eight rental rooms that tenants were afraid to come back to

Uncle Prasert owns a single-storey row of eight rental rooms in Wang Dan. Most of his tenants are young people from other provinces who work in factories around Kabin Buri; some work night shifts and come home to sleep in the morning. When the water began to come in at the end of September, he helped his tenants lift what they could onto higher shelves, and then everyone scattered to friends' places or temporary shelters. All eight rooms sat in floodwater for several days, during the period when Wang Dan was reported to be in critical status.

When the water went down, Uncle Prasert and his son went to look. The first thing that hit them was not the mud on the floor but the smell: a heavy mustiness mixed with drain odour that rolled out the moment they opened the first door. Mattresses left behind were swollen with water. A clear tide line ran along the plastered walls. Plywood wardrobes had warped so badly that the doors would not close, and black sediment was stuck in the grout of the bathroom tiles. Father and son spent days shovelling mud, washing floors, throwing out ruined mattresses and wardrobes, and propping every door open to let the air through.

A week later the rooms looked far better, but tenants who came back to check were hesitant. The musty smell had not gone. Some said their noses itched as soon as they stepped inside. Others asked straight out whether the room was safe now, because they had heard about leptospirosis and diarrhoea after floods. Uncle Prasert did not know how to answer, because what tenants feared most was exactly what he could not see.

His situation mirrors what many households in Wang Dan are facing, whether they live in their own homes, rent out rooms, or farm and keep a rice store or tool shed: the house looks clean, but it does not yet feel safe.

Where the Flood Hit in Wang Dan: What Official Reports Say

We only summarise information with a clear source and add no subdistrict-level figures that have not been reported.

• Khaosod English reported on 29 September 2026 that Wang Dan Subdistrict, Kabin Buri District, was in critical status during the floods affecting many provinces across the country.
• Thai PBS reported that Prachin Buri had flooding in 7 districts: Kabin Buri, Si Maha Phot, Na Di, Mueang Prachin Buri, Prachantakham, Ban Sang and Si Mahosot, with a total of 39,977 households affected.
• The 39,977 figure covers the whole of Prachin Buri Province, not Wang Dan or Kabin Buri alone. We found no subdistrict-level figure in the reports we cite.
• Nationally, the DDPM reported on 2 October 2026 that floods affected 31 provinces plus Bangkok, a total of 1,245,581 households and 3,535,206 people, caused mainly by heavy to very heavy rain plus runoff from the north.

"Critical status" means Wang Dan was among the hardest-hit places at that time. For homes, that usually means water stands longer, materials soak longer and germs have more time to multiply. Restoring a home in an area like this needs to be more thorough than an ordinary post-flood clean. Conditions and figures change daily, so Wang Dan residents should rely first on announcements from the Kabin Buri District Office, their local administrative organisation and Prachin Buri provincial agencies.

Wang Dan is a subdistrict of Kabin Buri, a district that combines farmland, rice fields and orchards with industrial areas that draw workers from many provinces, many of whom rent rooms locally. Housing therefore ranges from farming families' raised wooden houses and single-storey concrete homes to long rows of rental rooms and workers' dormitories. Each type suffers in its own way after a flood and needs its own kind of care.

What the Wang Dan Floodwater Brings Indoors: Bacteria, Viruses, Mold and Odour

Where floods linger, water flows through rice fields, cattle and buffalo pens, chicken coops, septic tanks, toilets and drains, then sits inside houses for days. The longer it stands, the more time germs have to multiply and soak into materials. WHO and CDC advise treating all floodwater as contaminated. Here is what to know.

Bacteria: the danger in sewage-tainted water

E. coli signals faecal contamination from people or animals and causes diarrhoea, cramps and dehydration, especially in small children and older adults. Salmonella spreads through food and utensils that touched floodwater, causing fever, diarrhoea and vomiting. In a farming area like Wang Dan, where rats are common in fields and rice stores, the one to watch most closely is Leptospira, the cause of leptospirosis. It is shed in rat urine, lingers in water and mud, and enters the body through cuts, scrapes or skin softened by long soaking. Typical signs are a sudden high fever, headache, severe calf pain and red eyes, usually one to two weeks after exposure. Late treatment can lead to serious complications.

Viruses: quick to spread when people crowd together

When people evacuate to shelters or relatives' homes, or when several tenants share bathrooms and common areas, stomach viruses such as norovirus and rotavirus spread very fast, causing vomiting and diarrhoea in clusters. Respiratory viruses such as influenza and RSV also spread well in the humid rainy season and in closed rooms. RSV is particularly dangerous for babies and older people.

Mold: the main problem in long-flooded homes

Homes in critical areas usually stay wet far beyond the 24 to 48 hours within which WHO and CDC advise cleaning and drying to prevent mold. As a result, molds such as Aspergillus, Penicillium, Cladosporium and black molds that love high humidity grow in plastered walls, plywood, gypsum ceilings, mattresses, curtains, sacks and wet paddy. Airborne spores cause a blocked nose, coughing, sneezing, stinging eyes and itchy rashes, trigger asthma and allergies, and in people with weak immunity can cause fungal lung infections.

Musty and sewage odours

The smell in Uncle Prasert's rooms was no ordinary smell. Mustiness comes from volatile compounds released by molds and bacteria. Drain or rotten-egg odours come from sulphur compounds in sediment trapped in tile grout, waste pipes and under furniture. As long as the smell remains, germs are still active in the room.

Who is most at risk in Wang Dan

Older adults, young children, pregnant women, people with diabetes, kidney or heart disease, people with allergies or asthma, and anyone with weak immunity should be the last to move back in, once the home is clean and dry. Farmers who wade into fields to check damage, and workers who wade to reach their jobs, also face a higher leptospirosis risk than others.

Remember: If you develop fever, calf pain, diarrhoea, vomiting, breathing difficulty or an infected wound after contact with floodwater, go to a doctor or the nearest hospital at once and say you waded through floodwater. Ozone treats the building environment. It never replaces medical care.

The Hidden Damage to Homes, Rental Rooms and Rice Stores in Wang Dan

Families in their own homes face recurring illness, children with diarrhoea, older relatives with lingering coughs, and the exhaustion of a clean-up that never seems to end. A house that still smells makes everyone feel that normal life has not returned.

Owners of rental rooms and workers' dormitories know that a musty room is a room nobody will rent. Tenants who left during the flood may decide not to return, while repair and furniture costs keep mounting. The longer rooms sit empty, the more income disappears, and if a tenant falls ill after moving back, trust in the whole row is damaged.

Farmers see wet paddy and milled rice mold very quickly, and some grain molds produce harmful toxins. Rice that has been in floodwater should not be eaten or fed to animals. Wooden rice stores and sheds become reservoirs of mold spores if they are not dealt with before the next harvest goes in.

Time and labour are scarce when many homes are damaged at once. Helpers are hard to find and repair queues are long, so recovery drags on, and the slower it goes, the further mold spreads.

Future costs rise when mold that has soaked into timber frames, ceilings or inner walls is left alone, because those parts often have to be torn out later at a much higher cost than doing things properly from the start.

Why the Smell Comes Back After Washing and Airing

Bleach only treats the surface. It works well on tiles and hard surfaces, but on plaster, wood and porous materials it barely penetrates and adds moisture instead. It must never be mixed with ammonia-based or acidic cleaners, because dangerous gases form.

Propping doors open is not enough. Rows of rental rooms often have windows on one side only, so airflow is poor. Back corners and bathrooms stay damp much longer than the front, and that is where mold starts.

Air freshener or mosquito coils to mask the smell make things feel better briefly, but the source remains, and strong scents can trigger tenants' or family members' allergies.

Repainting walls that are still damp makes a room look new for prospective tenants, but within weeks the paint blisters and black mold breaks through, leaving a bigger problem than before.

Putting sun-dried rice back in the store is risky. Rice that was in floodwater may look dry yet still carry spores and mold toxins, so it should not be kept for eating, and the store itself needs cleaning first.

What these methods miss is the air in the whole room and the corners nobody can see. Ozone fills that gap as the final step, once washing and drying are complete.

Post-Flood Ozone Disinfection for Homes and Rental Rooms in Wang Dan

World Health Disinfection (WHD) provides residential and building ozone disinfection for homes, condos, dormitories, hotels, offices, factories, schools and hospitals. Ozone (O3) is a strongly oxidising gas. Released into a closed room, it spreads into every corner, breaks down the cell structures of bacteria, viruses and molds, and destroys odour molecules. It then reverts to oxygen (O2), leaving no chemical residue. According to the test results the company has had certified by Thailand's Department of Medical Sciences and Intertek (UK), the process eliminates viruses, bacteria and mold by 99.99%.

Service in Wang Dan: WHD is based in Bang Khae, Bangkok 10160, and has no branch in Kabin Buri or Prachin Buri. Call 065-556-6294 or message LINE @whd268 with the number of rooms, the floor area and photos of the damage. The team will help plan a service in Wang Dan and confirm travel, timing and coverage. We cannot promise same-day arrival, especially while some routes are still waterlogged or the queue is long.

If you own several rental rooms, sending the number and layout of rooms in advance helps the team divide the work into sensible zones and treat the rooms that are ready first.

How the work is done

1. Information and assessment. The team asks about room count, size, materials, spots with strong odour or visible mold, and confirms the building has been washed and dried.
2. Clear the space. Occupants, pets and plants leave every room to be treated. Doors, windows and air conditioners are closed.
3. Generate and release ozone. The generator fills the room, including bathrooms, cupboards and the space under beds.
4. Contact time. Ozone works for the set period. A typical cycle is about 30 minutes per zone.
5. Rest and ventilate. The machine is switched off, ozone decays to oxygen, and the room is aired before anyone enters.
6. Aftercare advice. The team explains how to control humidity and which spots to watch for returning mold.

Safety first: Ozone is used only in an empty, sealed room. No people, pets or plants may be inside during treatment, and nobody re-enters until the rest and ventilation period is over. Ozone comes after mud removal, washing and drying. It does not replace cleaning, repairs or seeing a doctor.

10 Reasons Wang Dan Residents Choose Ozone After the Water Drops

1. Answer tenants with confidence. Landlords can explain that each room was washed, dried and then ozone-treated.
2. Reach places cloths cannot. Ozone gas gets into bathrooms, behind wardrobes and under beds.
3. Cover several germ groups, including bacteria, viruses and mold, with a 99.99% result in the company's certified tests. Details are on the ozone service page.
4. Cut musty and drain odours at the source instead of covering them with perfume.
5. No residue. Ozone turns back into oxygen, which suits children's and older people's bedrooms once ventilation is done.
6. No extra moisture, unlike spraying liquids that re-wet walls.
7. Help for emptied rice stores and sheds, reducing airborne mold spores before the next harvest is stored.
8. Room by room or zone by zone, around 30 minutes per zone, so the rooms that are ready first can be used first.
9. Clear safety procedures, plus complementary options such as our disinfection service for surfaces.
10. Free medical-grade disinfectant spray with ozone jobs of 15,000 baht or more, useful for landlords with many rooms. See the terms on the service page.

Before and After Ozone in Rooms Already Washed and Dried

Note: results depend on how dry the materials are, any remaining moisture sources and aftercare. If walls are still damp or the roof leaks, mold can return.

Example Case: A Farming Family and Their Wooden Rice Store in Wang Dan

Example case (an illustrative scenario that happens often, not a review from an identified customer)

Auntie Boonruean's family has farmed rice in Wang Dan for generations. Their house is a raised wooden home, and beside it stands a wooden rice store holding the paddy they eat through the year. When the area was in critical status, water reached the floor of the store and soaked the bottom layer of paddy. The space under the house, where the family sits on a bamboo platform and keeps farm tools, was under water for several days.

After the water dropped, children and grandchildren working in town came back to help. Their first decision was to throw away all the wet paddy, painful as it was, because rice that has been in floodwater carries both germs and mold. They then shovelled out mud, washed the store floor and under-house area with clean water, scrubbed off stains, removed rotten planks and left the store open for several days until the wood was dry.

Even when everything was dry, the mold smell in the store and the mustiness in the upstairs bedroom, where damp air had drifted up, would not go away. Auntie Boonruean, who has asthma, was getting worse, so her son first took her to see a doctor. He then contacted WHD on LINE, sent photos of the store and bedroom and gave the sizes. The team confirmed the spaces had to be empty and dry, then booked a convenient day and confirmed travel.

On the day, the family took Auntie Boonruean and their pets to a relative's house. The team treated three zones in turn, the emptied rice store, the under-house area enclosed with temporary tarpaulins, and the upstairs bedroom, and ventilated each before handover. The mold smell dropped noticeably. The family now plans to raise the base of the store and air it regularly before storing the next harvest.

The lesson: order matters most. Look after people's health first, discard contaminated goods, wash and dry, and only then use ozone as the final step.

Step-by-Step Checklist for Returning Home After the Wang Dan Flood

Before you go back

• Wait for Kabin Buri District or local authorities to say it is safe to return.
• Bring rubber boots, rubber gloves, a mask and a torch.
• Watch for snakes, centipedes and scorpions that may have sheltered indoors.
• Do not switch on the power until an electrician has checked it.

Clean and dry

• Remove every bit of mud, especially in corners and under cabinets.
• Discard food, medicine, rice, paddy and animal feed that got wet.
• Throw out mattresses, pillows and swollen plywood furniture.
• Wash hard surfaces with clean water and detergent, then disinfect as the label directs.
• Clean bathrooms, toilets and drains, and check the septic tank is not backing up.
• Open doors and windows and use fans or a dehumidifier until walls and floors are truly dry.

On ozone day

• Everyone, pets and plants out of the zone being treated.
• Open cupboards, drawers and bathroom doors so the gas can reach inside.
• For rental rooms, notify tenants in advance and collect keys for every room.
• Re-enter only after the team confirms ventilation is complete.

Afterwards

• Air rooms daily, especially those with windows on one side only.
• Watch for new mold. If you see it, find the leak or damp source first.
• Monitor the health of your family and tenants, and see a doctor for fever, calf pain or diarrhoea.
• Keep before-and-after photos to show tenants and as records.

Questions and Answers: Ozone After the Wang Dan, Kabin Buri Flood

Does WHD have a branch in Kabin Buri or Prachin Buri?
No. WHD is in Bang Khae, Bangkok. Contact 065-556-6294 or LINE @whd268, and the team will confirm travel and service coverage.

I have many rental rooms. Do they all need treating at once?
No. They can be split into zones, starting with rooms that are already washed and dry. The team will plan around your room count and their condition.

The house is still damp. Can we do ozone now?
Dry it first. Ozone deals with germs and odours, but it does not dry walls. If they stay damp, mold can return.

After ozone, can we eat the rice that got wet?
No. Food and rice that touched floodwater should be thrown away. Ozone is used in empty spaces, such as a store that has been emptied, not to rescue contaminated food.

How long do we need to stay out?
A typical cycle is about 30 minutes per zone, plus preparation and ventilation. The team will tell you clearly when you can go back in.

I have calf pain and a fever after wading. What should I do?
See a doctor immediately and mention the floodwater. It could be leptospirosis, which needs medical treatment. Ozone has nothing to do with treating illness.

Plan Post-Flood Ozone Treatment in Wang Dan

Send photos, the number of rooms and the spots with odour or mold, and the team will help get your home or rental rooms ready for use again.

See the Ozone Disinfection Service

Phone 065-556-6294 · LINE @whd268 · Email worldhealthdisinfection@gmail.com

Related Links and References

• Residential and building ozone disinfection
• Disinfection service
• Chemgene disinfectant

References

• Khaosod English, 29 September 2026 (Wang Dan, Kabin Buri listed as critical): More than 2.6 million people affected by floods across Thailand
• Thai PBS provincial flood report: thaipbs.or.th/news/content/558960
• Bangkok Biz News, DDPM data of 2 October 2026: bangkokbiznews.com/news/news-update/1254629
• CDC flood guidance: cdc.gov/floods
• Department of Disease Control, Thailand: ddc.moph.go.th