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

A riverside rice-porridge shop that stayed closed longer than expected

Nid and her husband run a small rice-porridge shop on the bank of the Mae Klong in Tha Muang. Out front, tables line the riverbank so customers can enjoy the breeze. At the back are the kitchen and a single-storey house where the family lives. Every rainy season the river rises, and locals are used to it. But at the end of September this year, after warnings were issued and news reports said the Mae Klong had overflowed its banks, water crept across the front yard, into the kitchen and finally up to the bedroom floor.

They managed to lift the fridge, gas cylinder and rice sacks out of reach, but the wooden tables and chairs, the food cabinet, the wooden chopping boards and their schoolboy son's mattress sat in water for several days. When it receded, a thin film of fine river silt coated everything, and a smell of muddy river mixed with drain odour filled the shop. Within a week, greenish-black mold spots appeared on the wooden table legs and the wall behind the food cabinet.

Nid scrubbed the kitchen with dish soap, poured bleach around and ran fans all day. The shop looked much cleaner, yet every morning when she opened the door, the musty smell was still there. Her son developed an itchy rash on the legs he had waded in, her husband started coughing, and Nid worried how regular customers would feel eating food cooked in a kitchen that still smelled like that, and whether it was even hygienic.

Nid's shop is a picture you can find all along the Mae Klong through Tha Muang and Tha Maka: wooden riverside homes, bankside restaurants, shophouses in town, and townhouses in estates whose owners never imagined the water could reach them.

Where the Flood Hit in Tha Muang and Tha Maka: What the Reports Confirm

We only summarise sourced facts and do not add district figures or water levels that have not been reported.

• Khaosod English reported on 29 September 2026 that Tha Muang and Tha Maka were on the list of districts under flood warnings, with the Mae Klong River overflowing its banks.
• According to the DDPM report of 2 October 2026, 13 districts of Kanchanaburi Province were flooded: Sai Yok, Lao Khwan, Huai Krachao, Nong Prue, Phanom Thuan, Dan Makham Tia, Tha Muang, Tha Maka, Bo Phloi, Si Sawat, Thong Pha Phum, Mueang Kanchanaburi and Sangkhla Buri, with a total of 9,635 households affected and water levels still rising.
• The 9,635 figure covers the whole of Kanchanaburi Province, not Tha Muang or Tha Maka specifically. The reports we cite give no district breakdown.
• 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.

Tha Muang and Tha Maka lie along the stretch of the Mae Klong that crosses Kanchanaburi's lowland plain. Many communities line the river: traditional raised wooden houses, concrete homes on the bank, riverside restaurants and guesthouses. Further back are the district towns with markets, shophouses and housing estates, and beyond them farmland with sugarcane, rice and orchards. When the river overflows, homes closest to the water are hit first and longest, while homes further inland can be flooded by water backing up through ditches and low-lying land.

Conditions and numbers change every day. Residents should closely follow announcements from the district offices, local administrative organisations, the Kanchanaburi DDPM office and the agencies responsible for water management.

While the Warning Is On: Preparing a Mae Klong Riverside Home for Easier Recovery

Because Tha Muang and Tha Maka are under warning, preparing before water enters the house reduces both damage and the amount of contamination you will have to deal with later.

• Lift absorbent items first, such as mattresses, pillows, blankets, clothes, documents and rice sacks. Once soaked in floodwater, they are almost impossible to save.
• Store food and drinking water in sealed containers, and keep older relatives' medicines in waterproof bags.
• Cover drains and floor outlets where it is safe to do so, to reduce sewage backflow.
• Photograph the house and belongings before the water arrives, as evidence for assistance claims.
• Get rubber boots, gloves and masks ready for the clean-up.
• Know where your main switch is and cut power to the ground floor before water reaches the sockets.
• Riverside eateries should move ingredients and utensils out of ground-floor kitchens so less has to be thrown away afterwards.

These steps mean fewer items to discard once the water drops and faster drying, which is the key to preventing mold.

What Mae Klong Floodwater Carries into Homes in Tha Muang and Tha Maka

When the river overflows, water flows across farmland, animal pens, septic tanks, community drains and markets before entering homes. The silt it leaves is not just river mud. It is mixed with sewage and organic matter. WHO and CDC advise always treating floodwater as contaminated. The main threats are these.

Bacteria

E. coli signals faecal contamination and causes diarrhoea, stomach pain and dehydration, which is dangerous for small children and older adults. Salmonella is a particular concern for food businesses, as it spreads via food, chopping boards and utensils that touched floodwater, causing fever, diarrhoea and vomiting. Another important one is Leptospira, which causes leptospirosis. It is found in water and mud contaminated with rat urine and enters through cuts or skin that has soaked for a long time. Anyone who waded to rescue belongings or works in waterlogged cane fields or paddies should watch for sudden high fever, headache and severe calf pain within about one to two weeks of contact.

Viruses

Norovirus and rotavirus cause vomiting and diarrhoea and spread via hands, food and surfaces. Norovirus is highly infectious even in tiny doses, making it a real threat for restaurants and busy households. Respiratory viruses such as influenza and RSV spread well in the wet season, in humid air and whenever people gather in poorly ventilated rooms.

Mold

River silt coating walls and floors holds moisture for a long time, letting molds such as Aspergillus, Penicillium, Cladosporium and black molds grow on wood, furniture, gypsum walls, curtains and mattresses. WHO and CDC recommend cleaning and drying within 24 to 48 hours to limit mold, but when water keeps rising and stays for days, most homes are already past that window. Mold spores cause coughing, sneezing, a blocked nose and stinging eyes, trigger asthma and allergies, and are dangerous for people with weak immune systems.

Musty, muddy and sewage odours

Riverside homes after a flood often have several layers of smell at once: the muddy, fishy smell of river silt, the mustiness of volatile compounds released by mold, and drain or rotten-egg odours from sulphur compounds in sewage. These smells tell you germs and organic matter are still active in the house, even if you cannot see them.

Who is most at risk

Older adults, young children, pregnant women, people with chronic illnesses, allergies or asthma, and people with weak immunity need special care. Restaurant owners and market vendors should also be especially careful, because the risk extends beyond their family to their customers.

Important: If you have a fever, calf pain, a rash or infected wound, diarrhoea, vomiting or difficulty breathing after contact with floodwater, see a doctor right away and mention that you waded through floodwater. Ozone treats the home and building environment. It is not a medical treatment.

How the Mae Klong Flood Affects Families and Businesses in Tha Muang and Tha Maka

Family health. Common problems after the water drops include diarrhoea, itchy leg rashes, lingering coughs and allergy flare-ups, which tend to come back if the house still harbours germs.

Restaurants and market stalls. A kitchen that was under water must be cleaned meticulously before reopening. Wooden chopping boards, cracked containers and any ingredients that touched the water must go. A musty smell in the shop makes customers hesitate, and if a customer falls ill, a reputation built over years can suffer.

Riverside guesthouses and shops. Rooms with a musty smell cannot take guests, and every day closed for repairs is lost income.

Sugarcane and rice farmers. Besides the damage in their fields, their homes and equipment sheds are flooded too, so their energy is split two ways, and many wade through water far more often than others.

Time and money. Scrubbing again and again while the smell lingers can take weeks, and if mold spreads into the structure, future repair bills rise sharply.

Why River Silt and Musty Odours Are Harder to Remove Than You Think

River silt is very fine. Mae Klong mud works its way into tile grout, timber joints and porous plaster. A single hosing usually leaves a thin film behind, which becomes food for mold.

Bleach does not penetrate. It disinfects hard surfaces but does not reach inside porous wood and plaster, and it adds moisture. Never mix it with ammonia or acidic cleaners.

Powerful fans dry only the surface. Moisture stays inside the walls, and the moving air spreads spores around the house.

Perfume and odour sprays are only temporary, and in a restaurant kitchen a strong fragrance can taint the food.

Painting over mold or water stains makes a shop look fresh for reopening, but the paint soon blisters and the mold returns.

None of these deals with the air in the whole room or the gaps you cannot reach. That is why ozone is an important extra step, once the mud is out and the building is washed and dried.

Post-Flood Ozone Disinfection for Tha Muang and Tha Maka

World Health Disinfection (WHD) provides residential and building ozone disinfection for homes, condos, hotels, offices, factories, schools and hospitals. Ozone (O3) is a strong oxidising gas that spreads throughout a room, breaks down the cell structures of bacteria, viruses and molds, and destroys odour molecules at the source. Afterwards it 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 area: WHD is based in Bang Khae, Bangkok, and has no branch in Tha Muang, Tha Maka or anywhere in Kanchanaburi. Call 065-556-6294 or message LINE @whd268 with the floor area, the type of building, such as a home, restaurant or guest rooms, and photos of the damage. The team will help plan the job and confirm travel, timing and coverage. We do not promise same-day arrival, especially while water levels are high or some routes are hard to travel.

Service steps

1. Consult and assess. The team asks about the size of the house or shop, materials and spots with strong odour, and confirms the mud is out and the building is washed and dry.
2. Prepare the space. All people, pets and plants leave the zone. Restaurants remove ingredients from the kitchen. Doors, windows and air conditioners are closed.
3. Release ozone. The generator fills the kitchen, storeroom, bedrooms and bathrooms.
4. Contact time. A typical cycle is about 30 minutes per zone.
5. Rest and ventilate. The machine is switched off, ozone decays to oxygen, and the area is aired before re-entry.
6. Aftercare advice. Humidity control and spots to watch, especially walls facing the river.

Safety rules: Ozone is used only in an empty, sealed room, with no people, pets or plants inside during treatment, and re-entry only after the rest and ventilation period. Ozone comes after mud removal, washing and drying. It does not replace cleaning, repairs or medical care.

10 Reasons Mae Klong Riverside Homes and Shops Should Use Ozone After the Flood

1. Reopen restaurants with more confidence. After the kitchen is washed and dried, ozone reduces germs and odours in the air of the kitchen and dining area.
2. Reaches every gap, behind food cabinets, under counters and in the ceiling space above the kitchen.
3. Covers bacteria, viruses and mold, with a 99.99% result in the company's certified tests. More on the ozone service page.
4. Breaks down muddy-river and drain odours rather than covering them with perfume.
5. No residue. Ozone reverts to oxygen, which suits children's and older people's bedrooms and food areas once ventilated. Read about ozone and chemical residue.
6. Does not re-wet materials, unlike spraying liquids onto walls that have only just dried.
7. Zone by zone, around 30 minutes per zone, for example the kitchen first and bedrooms later.
8. Suits riverside guest rooms, reducing musty smells before welcoming guests again.
9. Clear safety procedures, from clearing the room to ventilating.
10. Free medical-grade disinfectant spray with jobs of 15,000 baht or more. Details on the service page.

Before and After Ozone in Riverside Homes and Shops Already Washed and Dried

Note: results depend on how dry materials are and on ongoing care. Riverside homes are more humid than most, so keep humidity under control.

Example Case: A Two-Storey Townhouse in Tha Maka and a Father's Ground-Floor Bedroom

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

Tom, an office worker, lives in a two-storey townhouse in a housing estate in Tha Maka, a fair distance from the Mae Klong. He never thought water would reach his home. But when water backed up from the low land around the estate, the ground floor flooded for several days. Tom had turned that floor into a bedroom for his father, who is in his seventies, finds stairs difficult and has chronic lung disease.

During the flood, his father stayed with relatives. Tom came back once the water fell, shovelled out the mud, threw away the mattress, curtains and swollen plywood wardrobe, washed the floor and walls, and ran a dehumidifier with the doors and windows open for several days until the walls were dry. The ground floor still smelled musty, and he was very worried that mold spores would affect his father's lungs.

Tom first took his father to his regular doctor to ask when it would be safe to return home. He then contacted WHD on LINE, sent photos and the room size. The team asked about any remaining damp and booked a convenient date. On the day the whole house was empty, with no people, pets or plants. The team treated the ground and upper floors as two zones, then ventilated before handover. The musty smell in his father's room dropped clearly. Tom was advised to air the room regularly, move the bed away from the wall and watch the corners that had been damp.

What made this work was the right order: medical advice for the patient, discarding contaminated items, genuinely drying the house, and only then ozone.

Recovery Checklist After the Tha Muang and Tha Maka Flood

As the water starts to fall

• Wait for local announcements before returning, and be alert to the water rising again.
• Have an electrician check the system before using power.
• Wear boots, rubber gloves and a mask at all times.
• Watch for snakes and other dangerous animals sheltering indoors.

Wash and dry

• Remove all river silt, then wash again along tile grout and wall edges.
• Discard food, ingredients, medicine and cosmetics that touched the water.
• Restaurants should discard wooden chopping boards, cracked plastic containers and anything that cannot be washed.
• Wash hard surfaces with clean water and detergent, then disinfect as the label directs.
• Remove swollen materials such as gypsum, plywood and mattresses.
• Ventilate and use fans or a dehumidifier until everything is truly dry.

On ozone day

• Everyone, pets and plants out of the area.
• Remove food and ingredients from the kitchen.
• Open cupboards and drawers so the gas reaches inside.
• Return only after the team confirms ventilation is complete.

Afterwards

• Ventilate daily, especially walls facing the river.
• Watch for new mold and fix the source of damp.
• Monitor your family's health and see a doctor for fever, calf pain or diarrhoea.
• Keep following announcements about Mae Klong water levels.

FAQ: Ozone After the Tha Muang and Tha Maka Flood

Does WHD have a branch in Kanchanaburi?
No. WHD is based in Bang Khae, Bangkok. Call 065-556-6294 or LINE @whd268 to plan, and the team will confirm travel and coverage.

The water is still going up and down. Should I book ozone now?
Wait until the water has clearly receded, then remove the mud, wash and dry first. If water comes back in, cleaning has to start again. You can still contact us in advance to plan.

Is ozone in a restaurant kitchen safe for food?
Food and ingredients must be removed before treatment. After ventilation, ozone has reverted to oxygen and leaves no residue. Food that touched floodwater must be thrown away, not treated.

Can someone with lung disease or asthma stay home during treatment?
No. Everyone leaves the zone and returns after ventilation. Patients should ask their doctor when it is appropriate to move back.

How long does it take?
About 30 minutes per zone, plus preparation and ventilation, depending on the area and number of zones.

I have a rash on my legs after wading. What should I do?
Wash with clean water and soap. If the skin is red and swollen, or you have a fever or calf pain, see a doctor immediately.

Talk to Us About Post-Flood Ozone in Tha Muang and Tha Maka

Send photos of your home, shop or guest rooms with the floor area and the spots that smell, and the team will help plan a recovery that suits your building.

See the Ozone Disinfection Service

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

Related Links and References

• Residential and building ozone disinfection
• Ozone and chemical residue
• Ozone cleaning service

References

• Khaosod English, 29 September 2026 (Tha Muang and Tha Maka on the warning list, Mae Klong overflowing): More than 2.6 million people affected by floods across Thailand
• Bangkok Biz News, DDPM data of 2 October 2026: bangkokbiznews.com/news/news-update/1254629
• World Health Organization: who.int/news-room/fact-sheets
• CDC flood guidance: cdc.gov/floods
• Department of Health, Thailand: anamai.moph.go.th