A typical scenario (an illustrative example, not an interview with any resident)

Uncle Sao farms rice on the flat land of eastern Phichit. His home is a single-storey concrete house with a lean-to on the side for his walking tractor and fertiliser sacks. After days of rain, villagers said water from the Phetchabun side was on its way. That night it spread across his yard, ran through the lean-to and seeped into the living room. He and his wife lifted the TV and fridge and moved the rice sacks onto a wooden platform.

A few days later the water was gone, leaving a thin layer of silt over every floor and brown water marks along the lower walls. The lean-to smelled of wet fertiliser and mud. His daughter, a lower-secondary student, missed class because her school had flooded too. The family scrubbed until the floor looked clean, but a week later the bedroom smelled like damp cloth and small mold spots appeared in the corners. He began to wonder what else needed to be done.

Where the Flood Hit in Khao Sai, Thap Khlo and Samnak Khun Nen, Dong Charoen: What the News Reported

According to Matichon on 24 September 2026, the flood situation in Phichit was as follows:

• The cause was continuous heavy rain combined with runoff flowing from Phetchabun province.
• Areas named in the report included Khao Sai subdistrict, Thap Khlo district, and Samnak Khun Nen subdistrict, Dong Charoen district.
• Across the province, 7 districts, 13 subdistricts, 48 villages and 274 households were affected, of which 100 households were in Dong Charoen.
• Wat Wang Hin Phloeng School and Huai Phuk Witthaya School were flooded and had to close.

Please note: the figure of 274 households is the total for all 7 affected districts in Phichit, not for Khao Sai or Samnak Khun Nen alone. Dong Charoen accounted for 100 households. The report did not give a separate figure for Thap Khlo or water depths at specific locations, so this article adds no other numbers.

For national context, DDPM data at 06:00 on 5 October 2026, reported by Daily News, listed flooding in 26 provinces plus Bangkok, affecting 1,270,151 households and 3,519,416 people. ONWR also warned of heavy rain and possible flash floods in the north and parts of the south from 5 to 7 October, according to Thai PBS. All figures change daily, so please follow announcements from Thap Khlo district, Dong Charoen district and the Phichit provincial disaster prevention office.

Runoff From Phetchabun Onto the Phichit Plain: What Homes in Thap Khlo and Dong Charoen Face

This flood combined two sources: heavy local rain and runoff coming down from higher ground on the Phetchabun side. When water from the uplands reaches flat land it slows down, spreads out and pools in low-lying areas, including rice fields, village roads and homes. Along the way it picks up silt, plant debris and waste from everything it flows across.

Thap Khlo and Dong Charoen are mainly farming communities. Most homes are rural houses near rice fields and farm plots: raised wooden houses, single-storey concrete homes, and houses with a lean-to or equipment shed built alongside. Common trouble spots after the water drops include:

• Floors and lower walls. Silt coats surfaces, and plaster walls wick water above the actual flood line, leaving damp stains and peeling paint.
• Fertiliser and tool sheds. Wet fertiliser and farm chemicals may dissolve into the water. Wear gloves and dispose of them carefully.
• Rice stores and sacks. Wet rice molds quickly, smells sour and attracts rats and insects.
• Bathrooms, septic tanks and drains. Flooding can push sewage back up or make tanks overflow, causing odours and bacteria.
• Mattresses, blankets and clothes. Items that soaked up water and never dried fully become sources of mold and musty bedroom air.

Late in the rainy season, with showers still coming and humidity high, flooded homes dry slowly, and mold problems may only become obvious weeks later.

Wat Wang Hin Phloeng School and Huai Phuk Witthaya School: Caring for Classrooms After a Flood

The news report said both schools were flooded and had to close. The points below are general guidance for school buildings that have been flooded, not an assessment of any particular school.

• Classrooms sealed during closure. Humidity builds with no airflow, ideal for mold. Ventilate as soon as it is safe to enter.
• Libraries and document stores. Wet books and paper are very likely to mold; badly damaged items should be sorted out.
• Canteens. Utensils, tables and food preparation areas need thorough washing and disinfection before reuse.
• Student toilets. Check pipes and septic systems before reopening.
• Sick rooms and early-years rooms. These deserve extra attention because their users are young children or people who are already unwell.

WHD provides ozone treatment for many building types, including schools. Administrators or agencies responsible for a building can consult to plan it, provided no pupils or staff are inside and the building has already been cleaned and dried.

Every Kind of Germ the Phichit Flood Can Bring: Bacteria, Viruses, Mold and Odour

The information below is general post-flood hygiene guidance in line with the Thai Department of Disease Control and the CDC. It is not a medical diagnosis.

Bacteria from sewage and animal waste

Water that flows through rice fields, animal pens, septic tanks and drains can carry E. coli and Salmonella into homes. These bacteria cause diarrhoea, stomach pain, nausea, vomiting and fever. Take particular care with the kitchen, dishes, dining tables and children's toys, and wash hands with soap after cleaning and before eating.

Leptospirosis risk

Farming communities with rice fields and grain stores often have many rats. In a flood, Leptospira bacteria from rat urine spread through water and mud and can enter through cuts or skin softened by long soaking. Anyone who waded or cleaned and then develops a sudden high fever, headache, muscle pain especially in the calves, or red eyes must see a doctor quickly and mention the flood exposure.

Viruses that spread easily after the water drops

When family and neighbours clean together, or children return to class, norovirus and rotavirus, which cause diarrhoea and vomiting, spread easily via hands and surfaces. RSV and influenza pass through droplets more readily when the air is damp and people are close together. Older adults and young children need particular care.

Mold in walls, furniture and fabric

Agencies such as the CDC advise cleaning and drying a home within 24 to 48 hours after floodwater recedes to limit mold. When rain continues, many households cannot manage that. Mold appears as black, grey or green spots on walls, door frames, under furniture and in fabric, and airborne spores trigger allergies, asthma and lung problems.

Musty, mud and sewage odours

Lingering smells come from fermenting silt, mold, sewage from drains and spoiled rice or food. They soak into materials and room air. Fragrances and air sprays only cover them for a while.

People who need extra care include older adults, young children and schoolchildren, pregnant women and people with conditions such as diabetes, kidney disease, lung disease or allergies. See a doctor immediately for fever, persistent diarrhoea, breathing difficulty or calf pain after wading.

How the Flood Affects Families in Thap Khlo and Dong Charoen, Phichit

Health. Hard work shovelling silt and moving belongings leaves people exhausted, and long contact with dirty water causes rashes and fungal foot infections. Sleeping in rooms that are still damp then brings breathing symptoms.

Income. Farming communities with flooded fields carry both crop losses and repair costs. Restoring a home in the right order avoids paying twice, such as repainting walls again after mold pushes the paint off.

Education. When schools close, children miss lessons, learning materials at home may be damaged, and musty bedrooms disturb their sleep.

Time. Many families must rush back to their fields and animals, so cleaning inside the house is often less thorough than it should be.

Peace of mind. Smelling the flood every time you open the front door makes it feel as if the event never ended. A clean home with fresh air helps a family start again with confidence, and knowing that children and older relatives are sleeping in a healthier room removes one of the biggest worries that follow a flood in a farming community.

Common Post-Flood Methods and Why They Fall Short

• Pouring bleach and rinsing. Helps on smooth surfaces but misses material joints, the space under furniture and the air.
• Running fans and waiting. Dries surfaces quickly while the inside of walls and timber stays damp, especially when outside air is humid.
• Air fresheners. Mask odour briefly while the germs behind it remain.
• Painting over mold. Looks clean fast, but mold under the paint later makes it blister and peel.
• Mixing products to make them stronger. This can release dangerous gases and should never be done.

These methods deal only with what you can see and reach, while germs and odours are spread through the air and corners of each room. A whole-room step is needed after cleaning and drying are complete.

Ozone Disinfection in Thap Khlo and Dong Charoen, Phichit With WHD: What Ozone Can Do

World Health Disinfection (WHD) provides residential and building ozone disinfection for homes, condos, offices, schools, hotels, factories and hospitals. Ozone (O3) is a strongly oxidising gas. Released in a closed room, it spreads through the space, breaks down the structure of bacteria, viruses and mold spores, and breaks apart odour-causing molecules. It then reverts to oxygen (O2), leaving no chemical residue.

According to test results certified for the company by the Thai Department of Medical Sciences and Intertek (UK), WHD's ozone treatment eliminates viruses, bacteria and mold by 99.99%.

How the service works

1. Consult by phone or LINE. Call 065-556-6294 or message LINE @whd268 with photos, floor area and post-flood condition, so the team can estimate zones and plan travel to Thap Khlo or Dong Charoen.
2. Prepare the house. Remove silt, wash and dry as thoroughly as possible, discard badly damaged items, and take people, pets and plants out.
3. Release ozone. Technicians close doors and windows and fill the room with ozone, typically about 30 minutes per zone.
4. Contact time. Ozone works on surfaces and air in the sealed room for the time the technician sets.
5. Rest and ventilate. Wait for the full rest and ventilation period before using the space again.

Safety rules to follow. Ozone is used only in empty, closed spaces. No people, pets or plants may be inside during treatment, and you return only after the rest and ventilation period the technician gives. Ozone comes after mud removal, washing and drying. It does not replace cleaning, repairs or medical care.

WHD is based in Bang Khae, Bangkok 10160, and has no branch in Phichit. Service in Thap Khlo and Dong Charoen is planned together by phone and LINE, with travel, scope and appointment dates confirmed when you get in touch. Same-day arrival cannot be guaranteed.

When Should Homes in Khao Sai and Samnak Khun Nen Be Treated?

• After silt removal and washing, when no sediment covers surfaces and ozone can reach materials evenly.
• When the house is fairly dry but still smells, since a lingering smell signals remaining germs and moisture.
• Before children and older adults sleep in their rooms again, to reduce mold spores and airborne germs.
• When water levels are stable. ONWR warned of heavy rain in the north from 5 to 7 October, so follow local announcements and book when there is no risk of repeat flooding.

10 Reasons Homes in Thap Khlo and Dong Charoen Should Consider Ozone

1. It spreads through the whole room, reaching air, corners and the space behind furniture.
2. It handles many germ groups. Bacteria, viruses and mold at 99.99% per company-certified tests; see the ozone service.
3. It reduces mud and musty smells by breaking down odour molecules rather than masking them.
4. It leaves no residue, reverting to oxygen, so bedrooms are fine once the rest period ends.
5. It suits rural homes with storage sheds, provided the shed can be closed and emptied.
6. It can be used in school buildings when they are empty.
7. It is quick, typically about 30 minutes per zone.
8. It reduces repeat repairs by treating mold after drying, lowering the chance of blistered paint and regrowth.
9. Technicians manage safety, from checking rooms are empty to sealing and rest time.
10. There is a promotion. Jobs of 15,000 baht or more get a free medical-grade disinfectant spray; ask via WHD ozone.

Before and After: A Farming Home in Phichit After Upland Runoff

Note: results depend on the house's condition, how dry materials are and how well it was cleaned. Badly damaged items should be replaced.

Example Case: A Single-Storey Concrete House and Lean-To in Dong Charoen

Example case to explain the process, not a real customer review.

Nid teaches in the provincial town and went home to help her parents at their single-storey concrete house in Dong Charoen after the water receded. Thin silt covered the floors, the lower walls were stained, the lean-to holding fertiliser and farm tools smelled strongly, and her mother's bedroom, a concern because her mother has allergies, smelled musty.

Nid photographed the damage, shovelled out the silt, washed the floors and walls, and threw away the wet mattress and fertiliser sacks, wearing gloves and a mask throughout. She had an electrician check the submerged sockets and aired the house for several days. She then messaged LINE @whd268 with photos and floor area to plan travel and the number of zones.

On the appointment day, her parents and the family cat stayed with relatives. The technicians sealed and treated each zone in turn, including the bedroom, the living room and the lean-to, which could be closed, and then rested and ventilated the rooms. When the family returned, the musty smell was clearly reduced and her mother found it easier to breathe. Nid plans to raise the storage shelves and keep airing the house daily.

Recovery Checklist for Khao Sai, Samnak Khun Nen and Nearby Areas

While cleaning

• Switch off power at the breaker and have an electrician check submerged sockets and wiring.
• Wear boots, rubber gloves and a mask, and cover any cuts.
• Remove silt and wash floors, walls and furniture with clean water and detergent.
• Separate wet fertiliser and farm chemicals and handle them carefully.
• Discard flooded food, medicines and mattresses.
• Photograph damage for aid applications.

Before ozone day

• Dry the house as much as possible with open windows, fans or a dehumidifier.
• Take all people, pets and plants out.
• Tell the technician where odour or mold is worst.

After ozone

• Re-enter only after the rest and ventilation time the technician gives.
• Air the house daily and check corners for new mold.
• Wash hands often, drink safe water and watch for illness.
• See a doctor immediately for fever, calf pain, diarrhoea or breathing difficulty.

FAQ: Ozone Disinfection After the Thap Khlo and Dong Charoen, Phichit Flood

Does WHD have a branch in Phichit?
No. WHD is based in Bang Khae, Bangkok. Service in Thap Khlo and Dong Charoen is planned by phone at 065-556-6294 or LINE @whd268, with travel confirmed when you get in touch.

Is the 274-household figure for Khao Sai?
No. According to the report, it is the total for 7 districts across Phichit, with 100 households in Dong Charoen.

Can ozone replace washing the house?
No. Silt removal, washing and drying come first; ozone is the step after that.

Can people or pets stay inside during treatment?
No. The space must be empty. Return only after the rest and ventilation period.

Can a school request the service?
WHD treats many building types, including schools. Those responsible can consult, and treatment must take place while the building is empty.

What should I do if I get a fever after wading?
See a doctor right away and mention the flood exposure, especially with calf pain or red eyes. Treating a home with ozone is not medical treatment.

Plan Ozone Disinfection in Khao Sai, Thap Khlo and Samnak Khun Nen, Dong Charoen

Send photos, floor area and the post-flood condition of your home so the team can assess it and plan travel to Phichit.

View WHD Ozone Service

Call 065-556-6294 | LINE @whd268

Related Links and References

• Residential and building ozone disinfection
• Ozone cleaning service
• Chemgene disinfectant
• Contact WHD

• Matichon: runoff from Phetchabun floods Phichit, Thap Khlo and Dong Charoen, schools close (24 Sep 2026)
• Daily News: national flood situation per DDPM (5 Oct 2026)
• Thai PBS: ONWR warns of heavy rain and flash floods, 5 to 7 Oct
• WHO: Fact sheets
• CDC: Floods and cleanup safety
• Thai Department of Disease Control

Note: event details and figures follow the dates in news and DDPM reports and change daily. Please follow the latest local announcements.