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

A canal-side childcare centre in Bang Kruai and the playroom that had to close

Kru Ann runs a small childcare centre in a canal-side community in Bang Kruai district. The building is a two-storey house whose ground floor has been turned into a playroom: rubber crawling mats, toy shelves, a nap room with rows of mattresses, a children's bathroom and a corner for preparing milk. The children are between eighteen months and three years old, and most of their parents commute into Bangkok every morning.

In the last week of September it rained heavily for several days in a row. The canal behind the house rose slowly until it spilled into the front yard. Kru Ann carried what she could upstairs, but the wooden shelves and fixed rubber mats stayed. Brown, cloudy water covered the playroom floor and left a clear tide line on the pastel walls. With the DDPM report still saying the water in the province was rising, Kru Ann told parents the centre would close for a while.

Her biggest worry was not the cost of repainting or new mats. It was a question in the parents' LINE group: "When you reopen, will our children be safe?" If faecal bacteria or mould remain in the corners, small children will be the first to feel it. Kru Ann knows how quickly hand, foot and mouth disease, RSV and viral diarrhoea move through a childcare centre, even in normal times.

So she made a plan: when the water recedes, shovel out the mud, wash and dry the rooms, throw away soaked mattresses and fabric toys, then book a team to spray the ground floor, bathroom and milk corner, and send the parents photos of each step. Her story repeats across Nonthaburi wherever many people share one space.

Flooded areas in Nonthaburi, according to the DDPM (2 October 2026)

The information below comes from the DDPM situation report of 2 October 2026, as published by several Thai news outlets. Figures and status change daily, so always check the latest announcements from the province and district offices.

• Mueang Nonthaburi district — status: water rising (per the provincial summary). Communities along the Chao Phraya River and beside canals need close watching.
• Bang Kruai district — status: water rising (per the provincial summary). Old orchards and canals sit side by side with newer housing estates.
• Pak Kret district — status: water rising (per the provincial summary). Riverside communities, Ko Kret island, condominiums and office areas.

The report did not give a household figure for Nonthaburi, so we do not add one. For the national picture, the DDPM said on the same day that 31 provinces plus Bangkok were flooded, affecting 1,245,581 households or 3,535,206 people, mainly because of heavy to very heavy rain combined with runoff from the north.

"Water rising" means walls stay wet longer and microbes have more time to multiply, so planning cleaners and a disinfection appointment now lets you move faster once the water goes down.

Why shared spaces in Nonthaburi need post-flood disinfection, not just home cleaning

Nonthaburi is densely populated. Many families live in condos or townhouses where corridors, lifts and car parks are shared. Children, shoppers, temple-goers and commuters all pass through the same markets, schools, temples and piers. When these places flood, germs do not stay inside one household. They travel on hands, shoes, trolley wheels and anything passed from person to person.

Fresh markets and restaurants

In the fresh markets of Mueang Nonthaburi and the restaurants along the Chao Phraya, raw meat, vegetables and ice sit close to surfaces that were under water. If vendors only hose down and reopen, germs such as E. coli or Salmonella can end up in the food customers carry home.

Schools, childcare centres and colleges

Children are the most vulnerable group. Ground-floor classrooms, canteens, toilets, indoor play areas and school vans all need thorough cleaning before classes resume. Hand, foot and mouth disease, RSV and influenza already circulate during the rainy season, so reopening a building that dried out only a few days ago calls for extra care.

Riverside temples and sermon halls

Many Nonthaburi temples stand on the Chao Phraya or a canal. The sermon hall, temple kitchen and toilets are where older people gather for merit-making and ceremonies. If wooden floors or vinyl mats were soaked, moisture trapped underneath is ideal for mould, and elderly visitors with chronic illness are more likely to catch infections.

Condominiums, housing estates and offices

Pak Kret and Mueang Nonthaburi have many condo towers and office buildings. Car parks, rubbish rooms, parcel rooms and lobbies flood first, and hundreds of residents walk through them daily.

Ko Kret shops and tourist communities

Ko Kret in Pak Kret district is famous for pottery and Thai desserts. Most shops are wooden houses on the water. When water gets in, wooden floors, walls and display shelves absorb it, and musty smells and mould follow fast.

The many germs and moulds that follow floods in Nonthaburi

Urban flood water is not clean rain. It runs through drains, septic tanks, rubbish bins, animal pens and road surfaces. When it recedes it leaves mud and residue containing a mix of bacteria, viruses and fungi, each with its own way of causing illness and its own high-risk groups.

1. E. coli and other faecal bacteria

When septic tanks and sewers are pushed up by flood water, gut bacteria such as E. coli mix into the water and mud. Once dry, they still cling to floors, lower walls, table legs, stair rails and door handles. Touching these surfaces and then eating without washing hands can cause diarrhoea, stomach cramps and nausea. In toddlers and older adults, dehydration can become serious quickly.

2. Salmonella, the quiet risk in stalls and kitchens

Salmonella is closely linked to food poisoning and is found in human and animal waste. When flood water enters a restaurant kitchen, a school canteen or a market stall, chopping boards, knives, containers and prep areas can be contaminated. Typical symptoms are fever, diarrhoea and abdominal cramps.

3. Leptospirosis, the "rat urine" disease

Leptospira bacteria are shed in the urine of rats and some other animals and can survive in standing water and wet soil. They enter through cuts or through the eyes, nose and mouth, especially when people wade or clean without boots and gloves. Warning signs are sudden high fever, muscle pain especially in the calves, and red eyes. Anyone with these symptoms after wading should see a doctor promptly and mention the flood exposure. Surface disinfection lowers the risk from contaminated areas, but it does not replace personal protection or treatment.

4. Norovirus and rotavirus

These two viruses are major causes of diarrhoea and vomiting, especially where people live close together, such as evacuation centres, schools and dormitories. They survive on surfaces for a long time and only a small dose is needed to make someone sick. Rotavirus is most common in young children, while norovirus affects all ages. Handwashing, surface cleaning and disinfecting shared touch points all matter.

5. RSV, hand, foot and mouth disease and influenza

The rainy season is already peak time for respiratory viruses and hand, foot and mouth disease in children. RSV can make young children cough and struggle to breathe, and some need hospital care. Hand, foot and mouth disease causes mouth ulcers and blisters on the hands and feet, and influenza can hit older people and those with chronic illness hard. Toys, desks, handrails and lift buttons that children and the elderly share should be disinfected before they are used again.

6. Mould and airborne spores

Mould appears last and stays longest. Once concrete, wood, gypsum board and fabric soak up water, mould can start to grow within days. The CDC advises cleaning and drying within about 24 to 48 hours to limit mould, but with water still rising in Nonthaburi many buildings will stay wet far longer. Visible patches are only part of it. Spores float in the air and make people with allergies or asthma, and older adults, cough, sneeze and breathe less easily.

7. Musty and muddy odours

A musty smell is more than unpleasant. It tells you moisture and microbes are still active inside the materials. Dealing with odour means dealing with its causes: mud, moisture and microbes.

What skipping disinfection in shared spaces can cost Nonthaburi

Health

The first to be affected are toddlers, older people, pregnant women and people with chronic conditions such as diabetes, kidney or lung disease. Returning to a building that still carries germs can bring diarrhoea, skin rashes, infected wounds or allergy flare-ups.

Income

Restaurants, market stalls, Ko Kret shops and childcare centres live on daily income. Reopening too early and then seeing customers or children fall ill can force a second, costlier closure.

Trust

Parents, residents and temple visitors want proof that a space was handled seriously. An explainable process, documents and a tax invoice make that easier and calm rumours in chat groups.

Why the usual after-flood routine is not enough for Nonthaburi's shared spaces

• Pressure washing alone moves mud well, but spray from the jet can carry germs onto upper walls and furniture that were never under water.
• Bleach mixed without following the label can irritate the airways in closed rooms, and it rarely reaches corners, the undersides of shelves or the backs of cabinets.
• Fans and waiting reduce moisture but do not kill germs, and on days when it is still raining the humid air slows drying.
• Air freshener or incense hides the smell, but the cause remains.
• Painting over mould leads to peeling paint within weeks and another repair bill.

Mud removal and drying remain the heart of recovery. For places used by many people, a trained disinfection step simply closes the gaps ordinary wiping cannot reach.

How WHD disinfection spraying works for flood-hit areas in Nonthaburi

World Health Disinfection (WHD) is based in Bang Khae district, Bangkok, not far from Nonthaburi, but we do not have a branch in the province. Service in Mueang Nonthaburi, Bang Kruai and Pak Kret is arranged by phone on 065-556-6294 or LINE @whd268. The team will ask about the size of the area and its condition after the water has gone, then confirm the date and travel. We do not promise same-day arrival, because we are handling requests from many areas at the moment.

According to the service information, trained technicians use spraying and/or ULV (Ultra Low Volume) fogging, which produces a very fine mist. The droplets drift and settle onto surfaces under tables, behind shelves and up the walls, giving large spaces like canteens, temple halls and car parks more even coverage than wiping.

The disinfectant is CHEMGENE HLD4H, a medical-grade disinfectant from the United Kingdom containing Benzalkonium Chloride and Didecyldimethylammonium Chloride. According to the service information, it covers viruses, bacteria and fungi, including COVID-19, RSV, H1N1 and H5N1 influenza and hand, foot and mouth disease virus, with a stated effectiveness of 99.99%. The service page lists approvals and references from Thailand's Department of Medical Sciences, Mahidol University, NHS England and the EN 14476:2013+A2:2019 standard. Customers include hospitals, schools, malls, airports, offices, airlines, banks and residential buildings.

One point needs repeating: spraying comes after mud has been removed and surfaces have been washed and wiped. A disinfectant works best in direct contact with a surface; if a thick layer of mud is still there, it only treats the top of the mud. People should leave the zone being sprayed and return at the time the technicians give. We do not claim there is no residue at all, so we advise wiping food-contact surfaces and anything toddlers put in their mouths with clean water once the waiting time is over, following the technician's advice on the day.

The process step by step

1. Book by phone or LINE. Tell us the district, the type of space (market, school, temple, condo, shop), the approximate size, and send photos taken after the water went down.
2. Prepare the area. Remove mud, wash, wipe until just damp, take out damaged items, store food and utensils in closed cabinets, and move people and pets out of the zone.
3. Technicians spray and/or ULV-fog with CHEMGENE HLD4H, covering floors, lower walls, furniture and shared touch points.
4. Wait about 30 minutes, according to the service information, or for the time the technician gives for that space.
5. Use the space again. Ventilate, wipe food-contact surfaces as advised, and return to normal use.

According to the service information, customers receive a free CHEMGENE spray bottle and WELLGIENIC wet tissues with the service, and a tax invoice is available.

10 reasons shared spaces in Nonthaburi should be sprayed after the flood

1. Bacteria, viruses and fungi together, according to the germ list in the disinfection service information, not just one group.
2. ULV mist reaches hidden corners under display shelves, behind cabinets and up the high walls of halls and canteens.
3. About a 30-minute wait, according to the service information, so shops and offices can plan their reopening.
4. A medical-grade disinfectant, CHEMGENE HLD4H from the UK.
5. References you can show, such as the Department of Medical Sciences and EN 14476, useful when reassuring parents and residents.
6. Suited to spaces children use. Childcare centres and schools can lower the risk of hand, foot and mouth virus and RSV on surfaces before reopening.
7. Helps food stalls and restaurants reopen while reducing E. coli and Salmonella risk on prep surfaces after washing.
8. Done by trained technicians who know where to start, which areas need care and when people can return. See the service page for details.
9. Tax invoice available for schools, condos and businesses that need to claim or record the expense.
10. Works alongside other services, such as residential ozone disinfection for rooms where a musty smell lingers after surface spraying.

Before and after: what Nonthaburi's shared spaces often look like

Note: results depend on mud removal and drying before spraying. If walls are still wet inside, mould may return, so check again after one to two weeks.

Example case: a riverside condo management office in Pak Kret

(An illustrative example to explain the process, not data about any real building or customer.)

Ton manages the juristic person of an eight-storey condominium in Pak Kret district with about three hundred units. The ground floor holds the lobby, a parcel room, a small convenience store, a rubbish room and the car park. When the Chao Phraya rose and the rain kept falling, water entered the car park and reached the lobby.

As the water started to fall, Ton divided the work into three stages. First, mud removal and washing of the car park, lobby and rubbish room, with housekeepers in rubber boots and gloves at all times. Second, every door was opened, large fans were set up, and wet parcels were moved out for owners to check. Third, the disinfection appointment, booked over LINE while the water was still high.

On the day, residents were told in advance that the ground floor would be closed for a short time. Technicians ULV-fogged the car park and rubbish room, which are wide areas with many corners, then sprayed the lobby, counters, lift buttons, stair rails and parcel room in detail. After the waiting time the technicians gave, housekeepers opened the doors to ventilate, wiped the convenience store counter with clean water and reopened the area.

Ton then posted before-and-after photos, the process, the disinfectant name and the date in the residents' group, and the committee had a tax invoice for its expense report. Owners who still noticed a musty smell inside their own units were pointed to a separate ozone treatment.

Recovery checklist for Nonthaburi shared spaces, before and after spraying

While the water is still rising

• Follow announcements from Nonthaburi province and the Mueang, Bang Kruai and Pak Kret district offices closely.
• Switch off ground-floor power when water nears sockets, and keep away from submerged cables.
• Book cleaning and disinfection teams in advance.

Before spraying

• Wear boots, rubber gloves and a mask while shovelling mud, and cover any cuts on hands and feet.
• Remove all mud and wash floors and walls with clean water and detergent.
• Throw away soaked mattresses, cushions, fabric toys, paper and food.
• Open doors and windows and use fans to dry as fast as possible.
• Put food, utensils and personal items in closed cabinets or boxes.
• Tell everyone who uses the space when spraying will happen and when they must stay out.

After spraying

• Return at the time the technician gives, and ventilate.
• Wipe food-prep tables, children's toys and anything that touches mouths with clean water as advised.
• Set up handwashing points with soap at the entrances of markets, schools, temples and lobbies.
• Watch for new mould spots over one to two weeks and deal with them while they are small.
• Anyone with fever, calf pain, red eyes, severe diarrhoea or breathing difficulty should see a doctor promptly.

FAQ: post-flood disinfection in Nonthaburi

The water in Nonthaburi is still rising. Should we book now?

Get in touch now to plan and reserve a slot, but the actual spraying must happen after the water has gone and the mud has been cleaned and surfaces wiped.

Does WHD have a branch in Nonthaburi?

No. Our office is in Bang Khae, Bangkok. For Mueang Nonthaburi, Bang Kruai and Pak Kret, travel, date and time are confirmed by phone on 065-556-6294 or LINE @whd268.

How long must people stay out after spraying?

According to the service information, about 30 minutes, after which the space can be used normally. The actual time can vary with the size and ventilation of the area, so follow what the technician tells you on the day.

Can toddlers return to a childcare centre right after spraying?

After the technician's waiting time, ventilate the room and wipe hard toys, dining tables and crawling areas with clean water first. Fabric toys and mats that were soaked should be thrown away, not kept.

Is there no residue at all after spraying?

We do not make that claim. We recommend wiping food-contact and mouth-contact surfaces with clean water after the waiting time, and following the technician's advice every time.

What if someone in the community falls ill after the flood?

Take them to a doctor, especially if they have a high fever, calf pain, red eyes, persistent diarrhoea or difficulty breathing, and tell the doctor about any wading. Disinfection looks after the space; it is not medical treatment.

Plan post-flood disinfection in Nonthaburi so markets, schools, temples and condos can reopen with confidence

In Mueang Nonthaburi, Bang Kruai or Pak Kret? Contact us to assess your space, reserve a slot and confirm the travel date.

See the Disinfection Service and Book

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

Related links

• Disinfection spraying service
• CHEMGENE HLD4H disinfectant
• Residential and building ozone disinfection

References

• Bangkok Biz News (DDPM report): bangkokbiznews.com/news/news-update/1254629
• Thai PBS: thaipbs.or.th/news/content/558960
• World Health Organization: who.int/news-room/fact-sheets
• CDC Floods: cdc.gov/floods
• Thailand Department of Disease Control: ddc.moph.go.th