Last updated: 3 Oct 2026 | 7 Views |
Many people in Pathum Thani were not born here. They moved in to study, to work and to buy a house in one of the many housing estates. So when floodwater arrived in late September 2026, it reached homes still being paid off, student dormitories, shops outside the universities, kindergartens inside housing estates, fresh markets and old riverside houses along the Chao Phraya. According to the DDPM report of 2 October 2026, seven districts were affected: Thanyaburi, Mueang Pathum Thani, Sam Khok, Khlong Luang, Lam Luk Ka, Nong Suea and Lat Lum Kaeo, a total of 182,290 households, and the water was still rising. This article lists the flooded districts, explains the many kinds of germs and molds that tend to follow, and shows how a professional disinfection spraying service can help Pathum Thani's homes and shared spaces recover once the water recedes.
(An illustrative example, not a review from any specific customer.)
Teacher Jiw runs a small kindergarten inside a housing estate in Lam Luk Ka district. About eighty young children attend, most of them the sons and daughters of office workers who drive into Bangkok every day. When canal water flowed into the estate, every ground-floor classroom went under. Nap mats, soft toys, wooden blocks, picture books and the rubber floor tiles the children crawl on sat for days in murky water that smelled of drains.
While the water was still up, Jiw received messages in the parents' LINE group almost every hour. The question was not only "when will school reopen?" but "how can we be sure the classrooms are safe for our kids?" Many parents had heard about hand, foot and mouth outbreaks in childcare centres before, and they worried about mold triggering allergies.
Jiw knew that washing the floor would not be enough. Children aged two to five touch everything, put their hands in their mouths, sleep on the floor and share toilets. So she began planning right away: what to do first when the water dropped, what to do next, and how to explain it to parents. The same thing is happening at markets, dorms, restaurants, factories and temples all over Pathum Thani.
According to the Department of Disaster Prevention and Mitigation (DDPM) report of 2 October 2026, Pathum Thani had seven affected districts with 182,290 households, and the report said water levels were rising. Figures change daily, so follow provincial and DDPM announcements closely.
Note: "water rising" was the province-wide trend in the 2 October report, not a district-by-district reading. Some villages may already be stable or falling while others are still rising. Check with your municipality or district office.
Pathum Thani's geography divides clearly. The Chao Phraya runs through Sam Khok and Mueang, lined with riverside communities, old wooden houses and historic temples. To the east lies the Rangsit canal network, dug in a grid across Thanyaburi, Khlong Luang, Lam Luk Ka and Nong Suea. Rangsit and Khlong Luang are a hub of universities, dormitories, shops and industrial estates. Lam Luk Ka and Thanyaburi are full of housing estates, while Nong Suea and Lat Lum Kaeo still have rice fields, orchards and fish ponds. Because of this mix, the province's post-flood disinfection needs range from toddler classrooms to wholesale markets and factories.
Floods in Pathum Thani are usually canal water overtopping the banks, mixed with rainwater that could not drain and backflow from housing-estate sewers. That mix carries septic waste, fertiliser and animal manure from farmland, community rubbish and small animal carcasses into homes and buildings. Every surface the water reached may therefore be contaminated with many kinds of germs at the same time.
E. coli comes from human and animal faeces and causes diarrhoea and stomach pain; young children and older adults can dehydrate quickly. Salmonella causes food poisoning and is found in waste and contaminated food, a real concern for restaurants near universities, school kitchens and market food stalls. Leptospira, the cause of leptospirosis ("rat urine disease"), lives in water and mud contaminated with rat urine, which is common around farmland and canals. It enters through cuts or skin soaked for a long time. If you waded through water and then develop high fever, headache or calf pain, see a doctor promptly and mention the wading.
Hand, foot and mouth disease and RSV are the two names Pathum Thani parents of young children worry about most. Both spread through droplets, hands and shared toys. Rotavirus causes severe diarrhoea in children, while norovirus causes vomiting and diarrhoea at any age and spreads very quickly in dorms, canteens and shared bathrooms. Influenza passes easily in classrooms, lecture halls and the passenger vans many residents ride into the city every day.
Housing-estate homes in Thanyaburi and Lam Luk Ka often have gypsum ceilings, plywood cabinets and laminate floors. Student dorms are full of mattresses, curtains and carpets. Riverside wooden houses in Sam Khok soak moisture into the timber. All of these are ideal homes for mold. The CDC and WHO advise cleaning and drying within 24 to 48 hours to limit mold, but with water still rising many households cannot do that in time, so they find mold already growing when they get back in. Airborne spores make people with allergies or asthma, and young children, cough, sneeze, get congested, break out in rashes or struggle to breathe.
The signature smell of a Pathum Thani flood is canal mud mixed with drain odour. Combined with mustiness from mold in the walls, it can linger for a long time. It signals moisture or organic matter that still needs attention, and should not be treated with perfume or scented candles alone.
Young children in kindergartens and childcare centres, older adults in riverside homes, pregnant women, people with chronic illness or weak immunity, and farmers or labourers who wade for long periods. Anyone with fever, calf pain, non-stop diarrhoea, breathing difficulty or a red, swollen wound after contact with floodwater must see a doctor. Disinfection spraying treats the environment, not illness.
Children's and elders' health is every family's first worry. One infected toddler can close a whole classroom, and parents have to take leave too.
Money. Many housing-estate families are still paying off their homes. Tearing out built-in cabinets, replacing ceilings and buying new mattresses adds up fast. Disinfecting and drying properly from the start reduces the chance that mold spreads and forces even more demolition. Dorm owners lose income every day a room cannot be rented.
Time. Many Pathum Thani residents work in Bangkok and only have weekends to deal with their homes. Cleaning again because mold and smell came back can eat up weeks of weekends.
Business reputation. Private kindergartens depend on parents' trust, restaurants near universities depend on students who share everything on social media, and market stalls depend on regular customers. One hygiene lapse can hit income for a long time.
Family. Adult children working elsewhere must decide when to bring elderly parents back to riverside homes in Sam Khok or Mueang, while students from other provinces whose dorms flooded must find temporary places to stay.
Rinsing children's toys in plain water. Plastic toys and wooden blocks soaked in canal water carry grime in their grooves and joints. Plain water does not kill germs. Fabric toys and sponges that soaked should be thrown away.
Running a fan, then shutting the room. A sealed classroom or dorm room in the rainy season stays damp and mold grows quickly. Keep ventilating for several days.
Using strong bleach in children's rooms. Without proper dilution, or when mixed with other cleaners, bleach can irritate children's airways and release dangerous gases.
Painting over mold or covering it with decorative stickers. In kindergartens or dorms eager to reopen, this hides the mold, which returns within weeks.
Leaving each tenant to deal with their own room. In student dorms, corridors, laundry rooms, shared bathrooms and motorbike parking are used by everyone. If they are not disinfected together, the problem keeps coming back.
World Health Disinfection (WHD) provides disinfection spraying by trained technicians. According to the service information, the team uses spraying and ULV (Ultra Low Volume) fogging, with CHEMGENE HLD4H, a medical-grade disinfectant from the United Kingdom containing Benzalkonium Chloride and Didecyldimethylammonium Chloride.
The service page states the disinfectant covers viruses, bacteria and fungi, citing COVID-19, RSV, H1N1, H5N1 and hand, foot and mouth disease virus (the last two being exactly what parents of young children fear most), with a stated efficacy of 99.99%. It lists approvals or references from the Department of Medical Sciences, Mahidol University, NHS England and EN 14476:2013+A2:2019. Its customers include hospitals, schools, malls, airports, offices, airlines, banks and residential buildings.
Picture a kindergarten classroom after the flood. Teachers and parents have shovelled out the mud and washed the floor, yet many surfaces remain that hands cannot reach or cover evenly: small table legs, the underside of toy shelves, room corners, the backs of cupboards and window ledges. Spraying lays an even coat of disinfectant where it is needed. ULV turns the disinfectant into a very fine mist that spreads across the whole room and slowly settles on top surfaces and into corners. Left in contact for the required time, it helps reduce bacteria, viruses and fungi remaining after washing.
The key condition: clean before you spray. Mud and grime shield germs from the disinfectant, so spraying follows washing and does not replace it, nor does it replace removing deeply moldy materials. During application, people, children and pets must stay out and come back only when the technicians say so. In children's rooms, keep ventilating after re-entry and rinse toys children put in their mouths with clean water before use.
WHD is based in Bang Khae, Bangkok, with no branch in Pathum Thani, but you can contact the team to plan service in all seven districts. Dates, travel and scope are always confirmed by phone or LINE first. Same-day arrival is not guaranteed. Since the latest report says water is still rising, the actual spraying date should wait until your area has drained and is safe to reach.
Promotion according to the service information: a free CHEMGENE spray bottle and WELLGIENIC wet tissues with the service, and a tax invoice is available, handy for private schools, registered dormitory businesses and shops.
Kindergartens, childcare centres and primary schools. Lam Luk Ka, Thanyaburi and Khlong Luang have many schools inside housing estates. Focus on ground-floor classrooms, nap rooms, toy corners, canteens and toilets, and spray after the big clean and before children return.
Fresh and wholesale markets. Pathum Thani is an important distribution point for vegetables, fruit and fresh food in central Thailand. Markets in Thanyaburi, Khlong Luang and Mueang have food stalls, chopping boards, baskets and trolleys touched all day. Floors and drains should be washed and disinfected before full trading resumes.
Dorms and shops in the university zone. Rangsit and Khlong Luang are home to tens of thousands of students. Flooded restaurants, copy shops, laundries and dorms should disinfect common areas before students come back.
Factories and warehouses. Industrial areas in Khlong Luang and nearby districts have canteens, toilets and staff rest rooms that should be disinfected before production restarts, to reduce stomach bugs and flu among workers.
Temples, riverside halls and Sam Khok communities. Chao Phraya temples in Sam Khok and Mueang often serve as shelters and aid points. Halls, kitchens and shared toilets should be washed and disinfected before ceremonies resume. Ask a specialist about historic structures or antiques first.
Packing sheds and community shops in Nong Suea and Lat Lum Kaeo. Where produce is gathered and workers share space, clean equipment and work areas, then spray suitable areas such as worker rest rooms, toilets and eating areas.
Housing-estate and canal-side homes remain the priority, especially children's bedrooms, kitchens and ground-floor bathrooms that must be ready before families move back.
(An illustrative example, not a verified review.)
Noi runs a curry-and-rice shop on the ground floor of a three-storey shophouse in Khlong Luang district, renting the upper rooms to students and factory workers. When water filled the whole shophouse row, her kitchen, chiller and tables sat in water for days, and the stairs to the rooms had a mud line almost knee-high.
Once the road dried, Noi did not rush to reopen. She threw out every ingredient and dry good the water touched, had an electrician check the wiring, washed the kitchen, scrubbed the floor, cleaned the tables and chairs, and left the shutters open for airflow. Then she sent photos to the team on LINE to plan spraying for the shop plus the stairwell and corridors of the rooms. On the day, all tenants went out for the morning. The technicians sprayed the kitchen and shop front and used ULV in the stairs and upper corridors.
After the waiting time the technicians gave, Noi rinsed her dishes and chopping boards with clean water again and reopened the next day, with a small sign saying the shop had been washed and disinfected after the flood. Regulars said it put their minds at ease. She still keeps an eye on the damp wall behind the kitchen and plans to replace a water-stained ceiling panel.
Q: Does WHD have a branch in Pathum Thani?
A: No. WHD is in Bang Khae, Bangkok, but you can contact the team to plan service in Pathum Thani. Area, date and travel are confirmed by phone on 065-556-6294 or LINE @whd268. Same-day arrival is not guaranteed.
Q: The water is still rising. What should we do now?
A: Keep your household safe first and follow official announcements. You can discuss a disinfection plan in advance, but spraying must wait until the water drops, the mud is out and the area is washed.
Q: Can you spray a toddler classroom? How?
A: Yes. Children and teachers stay out during application, return at the time the technicians give, ventilate, and rinse mouthed toys with clean water before use.
Q: How long do we wait after spraying?
A: About 30 minutes according to the service information, or as the technicians advise on site.
Q: If we spray, do we still need to wash?
A: Yes. Always wash first. Spraying is the step after cleaning.
Q: Can a large market or dorm use the service, with a tax invoice?
A: Contact the team to assess the site and plan by zones. A tax invoice is available according to the service information.
Plan today so Pathum Thani's classrooms, markets and homes are ready the moment the water drops.
Plan Disinfection Spraying in Pathum ThaniCall 065-556-6294 · LINE @whd268 · worldhealthdisinfection@gmail.com
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