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

A factory family's home in Nong Khae, and weekends lost to scrubbing floors

Em and his wife both work shifts at an industrial estate in Nong Khae district. They are paying off a single-storey house in a small housing estate built on former rice land, its floor only a few hand-spans above the road. After days of heavy rain, the fields could not drain fast enough and water flowed into the estate, rising to about mid-shin inside the house. The couple lifted the fridge, TV and mattresses onto tables, then took their five-year-old son and Em's mother to stay with relatives in Mueang Saraburi.

When news came that the water was falling, they swapped shifts with colleagues and went back to check. A thin film of mud covered the tiled floor. A straight tide line ran along the bottom of the walls. The particle-board wardrobe had swollen so much its doors would not close. Worst of all was the smell, a mix of stagnant water, drains and damp, strongest in the bedroom where the windows had been shut the whole time.

They spent two full days off scrubbing floors, washing walls and pouring bleach. When they came back a week later, the musty smell was still there, and grey-green mold had appeared behind the wardrobe and in a corner of the bathroom ceiling. Em's mother, who already has allergies, started coughing every time she walked in. Em began to wonder how many more days of leave he would need, and when the family could sleep at home again.

This does not only happen in Nong Khae. It happens in wooden houses by the Pa Sak River in Sao Hai, in farmhouses in Nong Don and Don Phut, in market homes in Mueang Saraburi, and in resorts and holiday cottages in Muak Lek. What makes the difference is how well each household handles the first two or three days after the water drops.

Saraburi flood 2026: spread across 13 districts, and now receding

Nationally, late September and early October 2026 brought heavy to very heavy rain on top of runoff from the north. According to DDPM on 2 October 2026, 31 provinces plus Bangkok were flooded, affecting 1,245,581 households or 3,535,206 people.

Saraburi stands out because the impact is so widespread. Thirteen districts were affected, from the low-lying west and south, such as Sao Hai, Nong Don, Don Phut, Ban Mo, Nong Khae, Wihan Daeng and Nong Saeng, where rice paddies and Pa Sak riverside communities dominate, to higher ground with low pockets and streams running through it, such as Muak Lek, Kaeng Khoi, Wang Muang, Phra Phutthabat and Chaloem Phra Kiat. The 5,393 affected households therefore live in very different kinds of buildings.

Saraburi housing is remarkably varied: traditional stilt houses along the Pa Sak, wooden and concrete shophouses in old market areas, housing estates and worker dormitories around industrial estates and factories, farms and farmhouses in livestock country, and resorts and holiday homes for weekend visitors. The province also has important temples that draw pilgrims all year round.

When DDPM reports falling water, it means many households are entering the recovery phase, which is the most important window for preventing mold and flood-related illness. WHO and the CDC both advise cleaning and drying homes within 24 to 48 hours wherever possible to limit mold growth. The sooner you start, the less damage there is.

What Saraburi floodwater leaves behind: every germ you need to know

Water that has flowed through rice fields, livestock farms, septic tanks, market drains and land around factories is not safe. The CDC advises treating all floodwater as contaminated with sewage unless proven otherwise. What follows includes bacteria, viruses, mold and the organic matter that causes odour.

Bacteria from human and animal waste

E. coli, Salmonella and other gut bacteria arrive with water that has passed through toilets, septic tanks and animal pens. In areas with livestock and poultry farms, the risk is even clearer. The bacteria settle on floors, table legs, fridge doors, kitchen counters and toys. Swallowed, they cause diarrhoea, stomach cramps, vomiting and sometimes fever. In small children and older adults, dehydration can become serious quickly.

Leptospirosis

Leptospira bacteria are shed in the urine of rats and some animals. When water stands in rice fields and around animal-feed stores, the bacteria spread through water and mud and enter the body through cuts on the feet and legs or through the eyes and mouth. Typical signs are sudden high fever, headache, severe calf pain and red eyes. The period when water is falling and everyone is shovelling mud is a high-risk time. Thailand's Department of Disease Control advises wearing boots and gloves, and seeing a doctor promptly, mentioning flood exposure, if fever develops within two weeks of contact with floodwater.

Gut viruses such as norovirus

Norovirus spreads easily, survives on surfaces for a long time and travels via hands, food and contaminated drinking water. When several households share toilets or stay in shelters, the chance of an outbreak rises. Frequent handwashing with soap and drinking bottled or boiled water are basic but vital.

Mold: the fastest-growing enemy after the water drops

Spores of molds such as Aspergillus, Penicillium and some black molds are always in the air, but they germinate and spread rapidly on damp plywood, particle board, gypsum, wallpaper, curtains and mattresses. Mold can start growing within one to two days of materials getting wet, so estate homes with built-in cabinets and gypsum ceilings are especially vulnerable. Common effects include a blocked nose, coughing, sneezing, itchy eyes, rashes and asthma flare-ups. People with weakened immunity should avoid cleaning mold themselves.

Musty and sewage odours

Smells that linger after the water drops come from two main sources: organic matter rotting in the mud, which gives a drain or rotten-egg smell, and volatile compounds released by mold, which give the closed-room mustiness. Both soak into porous materials and return whenever a room is closed, the air conditioning is switched on or the weather turns humid. They are a reminder that the source has not been dealt with.

High-risk people in the household

Crawling babies and toddlers, older adults, pregnant women, people with diabetes, heart or kidney disease, those with allergies or asthma, and anyone with open wounds should stay away while mud is removed and the house is cleaned, and come back once it is dry and disinfected.

The hidden costs of a home that has not been disinfected

Health that slowly slides: Mold and musty air do not usually make anyone seriously ill overnight, but they gradually trigger allergies, chronic coughs and poor sleep, and children may get sick often enough to miss school.

Paying twice: Swollen, moldy built-in cabinets, ceilings that crumble and walls whose paint blisters will get worse if left alone, until whole sets have to be ripped out. Repairs then cost far more than early action.

Leave and lost income: For factory workers and day labourers, every extra day taken off to clean again is pay that does not come back.

Tourism and accommodation: Resorts, holiday cottages and homestays in Muak Lek and Kaeng Khoi live on reviews and first impressions. One musty room can turn into one bad review.

Family strain: Living apart for weeks, with grandparents at a relative's and children with grandma, because the house is not ready, wears everyone down.

Why the smell comes back after all that scrubbing

Bleach only works on the surface: It is fine on tiles and sanitary ware, but it does not soak into plywood, particle board or gypsum, and it does nothing about germs in the air. Never mix bleach with acidic or ammonia-based bathroom cleaners.

Running the air conditioner to dry the room: Air conditioning removes some moisture, but if the unit or ducts were flooded or sit in a moldy room, it can circulate spores around the space. Check and clean it before use.

Deodorising sprays and scented candles: These mask odour for a while without destroying bacteria or mold.

Repainting straight away: Painting a wall that is still damp traps moisture and mold inside. Before long the paint bubbles and the mold returns.

Keeping everything because it feels wasteful: Mattresses, pillows, fabric sofas and carpets soaked in dirty water usually cannot be truly cleaned, and they become mold incubators inside the house.

Ozone disinfection in Saraburi with WHD: the final step of home recovery

World Health Disinfection (WHD) is based in Bang Khae district, Bangkok 10160, and has no branch in Saraburi. Households, housing estates, resorts, shops, factories and organisations in Saraburi can still contact the team to plan a residential and building ozone disinfection service. Travel, coverage and the appointment date are confirmed by phone on 065-556-6294 or LINE @whd268, depending on actual road conditions and the job queue. The team does not promise same-day arrival.

How ozone works

Ozone (O3) is a gas with strong oxidising power. Released into a closed space at a set concentration, it destroys the cell structures of viruses, bacteria and mold and breaks odour molecules apart. Because it is a gas, it reaches behind built-in cabinets, under beds, inside drawers, into ceiling gaps and other places a cloth cannot. When the cycle ends, ozone reverts to oxygen (O2), leaving no chemical residue. According to the test results certified for the company by Thailand's Department of Medical Sciences and Intertek (UK), the system eliminates viruses, bacteria and mold at 99.99%.

The working sequence in brief

1. Send information: Photos of each room, the size of the house, your district and how high the water reached, via LINE @whd268.
2. Confirm the house is ready: Mud removed, washed and reasonably dry, with badly damaged materials taken out.
3. Empty the space: Every person, pet and plant must leave. Doors and windows are closed.
4. Treat zone by zone: About 30 minutes per zone, depending on room size.
5. Rest and ventilate: Let the ozone break down and air the space as advised before going back in.

Planning for larger Saraburi sites

Saraburi has many buildings that are bigger than a family home: worker dormitories near industrial estates in Nong Khae and Kaeng Khoi, offices and canteens inside factory compounds, schools, temple halls and multi-cottage resorts. For these, the practical approach is to split the building into zones, such as one floor, one wing or one block of rooms at a time, so that people can keep using the rest of the site while each zone is emptied, treated and ventilated. Sharing a simple floor plan or a list of rooms with the team over LINE makes it much easier to estimate the number of zones, the order of work and how long each area will need to stay closed. The same safety rule applies everywhere: no person or animal stays inside a zone while it is being treated.

Once more: ozone treatment comes only after mud removal, washing and drying. It does not replace cleaning, structural repairs or seeing a doctor. Anyone with unusual symptoms after wading must go to hospital.

Promotion: ozone jobs of 15,000 baht or more receive a free medical-grade disinfectant spray. You can also explore WHD's other disinfection services.

10 reasons Saraburi households finish recovery with ozone

1. It fits the receding-water window: Once the house is washed and dry, ozone deals with lingering germs before mold can spread.
2. It reaches behind built-ins: Estate homes in Nong Khae, Ban Mo and Mueang Saraburi often have wall-mounted cabinets, and the space behind them is where mold hides. Ozone gas gets there.
3. It handles several germ groups at once: Viruses, bacteria and mold, at 99.99% according to the company's certified tests. Read more on the ozone service page.
4. It cuts odour at the source: Rather than covering smells with fragrance, it breaks the odour molecules down.
5. No residue: It reverts to oxygen, suiting children's and elders' bedrooms once the ventilation period is over.
6. It suits resort rooms: Accommodation in Muak Lek and Kaeng Khoi can be treated room by room so guests can be welcomed back with confidence.
7. It scales to larger buildings: Offices, dormitories and buildings in factory zones can be divided into zones and scheduled.
8. Short time per zone: About 30 minutes per zone makes it easy to plan around days off or shifts.
9. Less chance of mold returning after repairs: Treating before repainting or installing new furniture reduces leftover germs. See also the ozone cleaning service.
10. Bringing the family back together: A home that is clean, dry and disinfected is one that elders and children can come back to and sleep in comfortably.

Before and after: a Saraburi home after the water drops

Note: results depend on the damage, the remaining moisture and the quality of cleaning before treatment.

Example case: holiday cottages in Muak Lek

An illustrative example to aid understanding, not a verified customer review.

Nan manages six small rental cottages in Muak Lek district, popular with visitors who drive up for the weekend. During the heavy rain, a nearby stream overflowed and flooded the two lowest cottages. The water was not deep, but it sat for several days, damaging rugs, curtains and wooden bed frames.

After the water receded, Nan had staff wash the cottages and leave the windows open. When they switched on the air conditioning to test it, a musty smell filled the rooms, and mold spots began appearing along the curtain hems. Nan worried that if guests checked in and noticed the smell, years of good reviews could be undone.

The changes she made were these: throw out the moldy rugs and curtains, clean the air conditioners, air and fan the rooms until floors and walls were dry, and only then book ozone treatment for the two flooded cottages, plus the others that had been shut for a long time, to reduce mustiness. Each cottage was empty and closed during treatment, and staff went back in to make up the rooms only after the rest and ventilation period. In situations like this, owners tend to value completing every step before reopening over rushing to catch the next holiday weekend.

First-48-hours checklist for Saraburi homes after the water drops

Before going in

• Check provincial and district announcements that the area is safe.
• Do not flip switches while floors are wet. Have an electrician check first.
• Watch for snakes, insects and other creatures that sheltered in the house.
• Prepare boots, rubber gloves, masks and eye protection.

Day one and day two

• Photograph damage in every room to support assistance claims.
• Open every door and window to get air moving.
• Remove all mud from floors, stair corners and bathrooms.
• Wash hard surfaces with detergent, then disinfect as the label directs.
• Take out soaked mattresses, pillows, carpets and upholstered furniture.
• Cut out wet lower sections of gypsum or insulation so the inside can dry.
• Keep fans and dehumidifiers running.
• Discard food and medicine touched by floodwater; wash dishes and scald them.

Ozone day

• Every person, pet and plant out of the area.
• Open cabinets, drawers and internal doors; close external doors and windows.
• Wait for the full rest and ventilation period before going back in.

The next two to four weeks

• Air the house daily and keep humidity down.
• Check for new mold, especially behind cabinets and in ceiling corners.
• Monitor health. Fever, calf pain, diarrhoea or breathing difficulty means seeing a doctor.

Q&A: ozone disinfection in Saraburi

Q: My house is in Sao Hai or Wihan Daeng. Can the team come?
A: You can contact WHD to plan service in any district. The team confirms travel and the appointment by phone on 065-556-6294 or LINE @whd268. WHD has no branch in Saraburi and is based in Bang Khae, Bangkok.

Q: The water just went down. Can we treat straight away?
A: Remove the mud, wash and dry first. Ozone works best when no mud or standing water remains.

Q: Do we have to leave the house during treatment?
A: Yes, everyone, including pets and plants. The space must be empty and closed, and you return only after the rest and ventilation period.

Q: How many hours does it take?
A: About 30 minutes per zone, not counting preparation and ventilation. The number of zones depends on the size of the home.

Q: With ozone, can we keep the wet gypsum boards?
A: No. Materials that have gone soft or are heavily molded should be removed and replaced. Ozone is an added step after cleaning and drying.

Q: Can farms or barns be treated?
A: You can discuss it with the team, but the same rule applies: no people or animals in the space during treatment.

Q: Are there any promotions?
A: Jobs of 15,000 baht or more receive a free medical-grade disinfectant spray.

The water is down. Do not let mold keep growing. Plan Saraburi ozone treatment with WHD

Send photos of your home and tell us your district, from Nong Khae, Sao Hai, Kaeng Khoi and Muak Lek to Mueang Saraburi, and let the team help you assess and plan.

Ask About Ozone Disinfection

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

Related links and references

• Residential and building ozone disinfection
• Ozone cleaning service
• Disinfection service
• Bangkokbiznews: flood situation report (DDPM data)
• Thai PBS: flood situation
• CDC: Floods
• Department of Disease Control, Thailand