The Latest Chanthaburi Flood Figures According to DDPM

According to the Department of Disaster Prevention and Mitigation (DDPM) report of 2 October 2026, Chanthaburi province had affected areas in two districts, Na Yai Am and Tha Mai, with a total of 7,460 households affected and water levels falling. All figures reflect the report date and change daily, so keep following announcements from DDPM and Chanthaburi province.

Nationally, DDPM reported on the same day that 31 provinces plus Bangkok were flooded, affecting 1,245,581 households or 3,535,206 people, as a result of heavy to very heavy rain combined with runoff from the north.

Na Yai Am and Tha Mai are districts bound up with fruit orchards: durian, mangosteen and rambutan. Many homes stand in the middle of orchards, with sheds for equipment, fertiliser and farm tools next door. Tha Mai also has areas near the coast and market communities with shophouses and stores. As the water drops, each household has to restore both its living space and its livelihood at the same time.

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

A House in a Durian Orchard in Na Yai Am: The Water Has Gone, the Worry Has Not

Uncle Somchai and Aunt Boonmee have grown durian and mangosteen in Na Yai Am district for more than thirty years. Their house is a single-storey concrete home raised slightly off the ground. Behind it is a shed for fertiliser, a sprayer, fruit baskets and a grass cutter. Their daughter, a nurse in town, brings her two-year-old over for them to look after every weekday.

Days of heavy rain made water rise from the orchard channels, flooding the yard and entering the house at ankle-to-shin height. The shed behind the house went under: fertiliser sacks got soaked, some plastic drums floated away, and baskets and wooden crates sat in muddy water for days.

When the water receded, Uncle Somchai swept the mud out of the house, hosed the floors and opened every window. But three days later, the bedroom with laminate flooring began to smell musty, the edges of the boards swelled, and the curtains showed black spots. The shed gave off a sour smell mixed with fertiliser. Their daughter did not dare bring the toddler over, afraid the child would crawl on floors that still carried germs. Aunt Boonmee started a dry cough every morning, and Uncle Somchai had a wound on his toe from wading through the orchard.

In a situation like this, the first step is for Uncle Somchai to see a doctor about the foot wound, and for Aunt Boonmee to have her persistent cough checked. Then the family can plan the recovery step by step, separating the living area from the shed that stores farm chemicals, because the two need to be handled differently.

Every Germ That Comes With the Chanthaburi Flood: Knowing the Invisible Enemy

Floodwater in the orchards and communities of Na Yai Am and Tha Mai flows through orchard channels, animal pens, septic tanks, drains and markets before it reaches homes, so it brings several groups of germs with it.

Bacteria

Common bacteria include E. coli and other gut bacteria, which signal faecal contamination from septic tanks or animal waste. They stick to mud on floors, walls and containers, causing diarrhoea, stomach pain and wound infections. Orchard workers who walk through channels and mud should be especially alert to leptospirosis. The bacteria come from the urine of rats living in orchards and storage sheds and enter through wounds or skin soaked for a long time. Symptoms are sudden high fever, headache, muscle pain (especially in the calves) and red eyes. Anyone with these symptoms within about two weeks of wading should see a doctor promptly and mention the exposure.

Viruses

Norovirus, rotavirus and hepatitis A spread through hands, food and contaminated water. Young children who crawl on the floor or put toys that were in floodwater into their mouths are at high risk. Older adults with severe diarrhoea can also become dehydrated quickly.

Mold

The eastern region gets heavy rain and high humidity, and orchard homes surrounded by trees often get little sun, so materials dry slowly. Laminate floors, gypsum walls, curtains, mattresses and wooden baskets or crates that got wet are ideal for mold. The WHO and CDC advise cleaning and drying within 24 to 48 hours to limit mold. Spores from molds such as Aspergillus and Penicillium can trigger allergies, asthma, chronic cough and irritation of the eyes and skin.

Musty and sour-rot odors

The smell in an orchard home after the water drops is usually a mix: damp mustiness from mold, drain smells from wastewater, and a sour, rotting smell from organic matter, leaves and fallen fruit that decayed in the water. These smells soak into wood, fabric and plaster. If they keep coming back, the source is still there.

Who needs to be most careful

• Young children who crawl and put their hands in their mouths
• Older adults, especially elderly farmers who still work in the orchard every day
• Pregnant women
• People with chronic conditions such as diabetes, lung disease, asthma or allergies
• Orchard workers and anyone moving goods through muddy water

A Risk Specific to Chanthaburi Orchard Homes: Fertiliser and Farm-Chemical Sheds

What sets an orchard home apart from a town house is the shed that stores fertiliser, pesticides and fuel. When floodwater reaches it, containers can crack, leak or float away, and some chemicals may mix with the water and mud. This needs careful handling, and it is not a job for ozone.

• Wear rubber gloves, boots and a mask when entering the shed. Never handle leaking containers with bare hands.
• Move damaged chemical containers to a safe place away from the house, water sources and children, and follow the label instructions.
• If you find a large spill, contact local officials or agricultural authorities for disposal advice.
• Do not use baskets, crates or containers contaminated with chemicals or mud for fruit or food until they have been washed thoroughly and dried.
• In future, store fertiliser and chemicals on high shelves to reduce the risk if flooding happens again.

Once the chemical issue has been dealt with safely, the living area can move on to washing, drying and ozone treatment to deal with germs and musty odor.

What Happens if Germs Are Left in Chanthaburi Homes

Health: family members fall ill often, cough for weeks, see allergies flare and children get recurring diarrhoea. At a time when hard physical work is needed to restore the orchard, illness means work stops.

Money: furniture, floors and belongings are damaged and medical costs rise, while orchard income may already be reduced by the flood.

Time: doing things in the wrong order, such as laying new flooring or painting before the walls are dry, brings mold back and wastes time doing the work twice.

Reputation: customers notice musty smells immediately in shops, restaurants and guesthouses in Tha Mai.

Family: children and grandchildren stop bringing toddlers to the grandparents' home, and the everyday support within the family is disrupted.

Why Hosing Down and Opening Windows Is Not Enough

• High-pressure hosing removes mud well, but without disinfection and drying afterwards, the extra water keeps materials damp for longer.
• Bleach works on hard surfaces but does not reach inside laminate, wood, fabric or foam, does nothing about airborne spores, and must never be mixed with ammonia or other cleaners.
• Opening windows in a shady house may not be enough: orchard homes get little sun, and the breeze may not dry them properly.
• Sprays or charcoal odor absorbers help temporarily but do not destroy the germs that cause the smell.
• Painting or laying new floors straight away traps moisture and mold underneath.

The key principle is: remove mud, wash, disinfect surfaces, dry properly, and then use ozone to deal with germs in the air, in corners and in hard-to-reach materials.

Ozone Disinfection in Chanthaburi by WHD: How It Works and the Steps

World Health Disinfection (WHD) provides residential and building ozone disinfection. It is based in Bang Khae, Bangkok, and has no branch in Chanthaburi, but families, orchard owners and businesses in Na Yai Am, Tha Mai and nearby areas can contact the team to plan a service. Travel and coverage are confirmed by phone or LINE before every appointment.

Ozone (O3) is a gas with strong oxidising power. When it spreads through a closed room, it reaches the air, gaps in the floor, the space behind cabinets and under beds, curtains and material surfaces. It breaks down the cell structures of viruses, bacteria and mold and breaks apart odor-causing molecules, then reverts to oxygen (O2) without leaving chemical residue. According to the test results certified for the company by Thailand's Department of Medical Sciences and Intertek (UK), it eliminates viruses, bacteria and mold by 99.99%. See the certificates page for more.

Steps

1. Assessment: send photos of the house, shop or guesthouse with its size and number of rooms by LINE or phone.
2. Preparation: the building must already be cleared of mud, washed and dry, with unsalvageable items removed.
3. People, pets and plants out: close doors and windows; open cupboards and drawers.
4. Ozone treatment: gas release and contact time, typically about 30 minutes per zone.
5. Rest and ventilation: wait for the ozone to revert to oxygen and air the space before re-entering, as the team instructs.

Safety: ozone is used only in a closed space with no people, pets or plants inside. Do not enter during treatment, and return only after the rest and ventilation period. Ozone does not replace mud removal, washing, drying, handling of spilled farm chemicals, or medical care. If you have fever, calf pain, diarrhoea or an inflamed wound after wading, see a doctor.

10 Reasons Na Yai Am and Tha Mai Residents Should Consider Ozone After the Water Recedes

1. Orchard homes dry slowly and humidity lingers; ozone after drying closes out the germ and odor problem.
2. It reaches gaps in laminate floors and behind cabinets that wiping misses.
3. It covers bacteria, viruses and mold in one step. See the ozone service
4. No chemical residue, because ozone reverts to oxygen, which suits homes with small children and older adults.
5. It reduces musty and sour-rot smells at the source rather than masking them.
6. It helps families feel confident bringing young children home once every step has been completed.
7. It is quick: about 30 minutes per zone plus rest and ventilation, without taking much time away from orchard work.
8. It is backed by test results certified for the company by the Department of Medical Sciences and Intertek.
9. It works for homes, shophouses, restaurants, guesthouses and offices. Consult the WHD team
10. Promotion: a free medical-grade disinfectant spray with ozone jobs of 15,000 baht or more. Ask about the promotion

Example case (a simulated scenario to explain the process, not a real customer review)

A Curry-and-Rice Shop in a Tha Mai Shophouse: Reopening After the Water Recedes

Malee runs a curry-and-rice shop on the ground floor of a two-storey shophouse in a market community in Tha Mai district. She lives upstairs with her teenage son. Water stood in the shop at about mid-shin height for two or three days, soaking the food cabinet, wooden tables and chairs, and some of the rice bins.

When the water dropped, Malee closed the shop immediately and threw away all ingredients, rice and seasonings that had touched the water. She removed the mud, washed the floor, walls and kitchen equipment with clean water and detergent, scalded plates, bowls and cutlery in boiling water, threw out the soaked wooden chopping board, and had a technician check the sockets and refrigerator. She then left the shutters open with fans running for several days. Even so, every morning when she opened up, a musty, drain-like smell rose from the back corner and under the stairs. She worried that customers would notice and be put off eating there.

She contacted WHD on LINE with photos and the floor area. The team confirmed travel to Chanthaburi and an appointment date, and advised her to remove all fresh food and edible items from the area first. On the day, the team split the building into two zones, the shopfront with the back kitchen, and the upper floor, treating each for about 30 minutes before resting and ventilating and then letting her back in.

In situations like this, shop owners usually notice that the morning musty smell is clearly reduced and feel more confident opening to customers. The team advised keeping up normal kitchen hygiene, ventilating every day, and continuing to control humidity under the stairs and in dim corners.

Chanthaburi Flood Recovery Checklist: Before and After Ozone

Step 1: Safety first

• Switch off power at the breaker; have an electrician check sockets, wiring and water pumps that were submerged.
• Watch for snakes and venomous animals in the house, the shed and woodpiles in the orchard.
• Wear boots, rubber gloves and a mask, and cover wounds before touching mud.
• Handle damaged farm-chemical containers separately from house cleaning.

Step 2: Remove mud and wash

• Shovel mud out of the house, yard and drains.
• Wash floors, walls, hard furniture and containers with clean water and detergent, then disinfect surfaces following public health guidance.
• Throw out mattresses, pillows, carpets, swollen laminate, and any food and medicine that touched floodwater.
• Wash fruit baskets and crates thoroughly and sun-dry them before reuse.

Step 3: Dry

• Open the house to wind and sun as much as possible; trim branches shading the windows if it can be done safely.
• Lift furniture off the floor and open cupboards so air can move through.
• Remove soaked gypsum walls or ceilings so the inside can dry.

Step 4: Ozone

• Book with the WHD team and confirm travel to Chanthaburi by phone or LINE.
• Take people, pets, plants and food out of the area.
• Re-enter only after the rest and ventilation period is complete.

Step 5: Ongoing care

• Ventilate daily and watch dim corners, the space under stairs and rooms without sun.
• Wash hands before eating and drink clean water.
• Watch everyone's health for at least two weeks after wading. If fever, calf pain, diarrhoea or an inflamed wound appears, see a doctor immediately.

Frequently Asked Questions About Ozone Disinfection in Chanthaburi

1. Does WHD have a branch in Chanthaburi?

No. WHD is based in Bang Khae, Bangkok. People in Na Yai Am, Tha Mai and other Chanthaburi districts can call 065-556-6294 or LINE @whd268. The team will confirm travel, coverage and an appointment date; same-day arrival cannot be guaranteed.

2. The water has just gone. Can we do ozone straight away?

Remove the mud, wash and dry the house first. Treating a house that is still wet is less effective, but you can contact the team to plan ahead.

3. Can ozone remove farm chemicals that mixed with floodwater?

Ozone should not be used as a way to deal with chemical spills. Separate damaged containers, follow the label instructions and ask local officials for advice. Ozone treatment is for germs and odor in living spaces after cleaning.

4. Do we have to leave during treatment?

Yes. People, pets and plants must stay outside the area for the whole treatment and the rest and ventilation period.

5. How long must a restaurant close?

A typical cycle is about 30 minutes per zone, plus preparation and rest and ventilation time. The team will estimate the total after seeing the space, and all food should be removed before treatment.

6. After ozone, we do not need to clean again, right?

No. Washing and drying must always come first, and after treatment you still need to keep the space clean and dry.

7. An orchard worker has a foot wound after wading. What should we do?

Wash the wound with clean water and soap, cover it and see a doctor, especially if it is red and swollen or there is fever or calf pain. More information is available from the Department of Disease Control and the CDC.

Make Your Chanthaburi Home as Fresh as an Orchard After Rain

Talk to the WHD team to plan ozone treatment for homes, shophouses, restaurants or guesthouses in Na Yai Am, Tha Mai and nearby areas.

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

Promotion: free medical-grade disinfectant spray with any ozone job of 15,000 baht or more.

Related Pages

• Residential and building ozone disinfection
• Disinfection service
• Chemgene disinfectant
• Certificates
• Contact us

References

• Bangkokbiznews, DDPM flood situation report: bangkokbiznews.com
• Thai PBS: thaipbs.or.th
• World Health Organization fact sheets: who.int
• CDC flood guidance: cdc.gov/floods
• Thailand Department of Disease Control: ddc.moph.go.th