What happened in Sa Kaeo: flooding in all 9 districts

According to Thai PBS, on 30 September 2026 Sa Kaeo province had flooding in all nine of its districts: Mueang Sa Kaeo, Watthana Nakhon, Aranyaprathet, Khok Sung, Khlong Hat, Wang Nam Yen, Khao Chakan, Ta Phraya and Wang Sombun. In total, 32 subdistricts and 210 villages were affected, covering 15,086 households, and the report said water levels were still rising at that time.

Later, Krungthep Turakij (กรุงเทพธุรกิจ) reported that on 4 October 2026 Sa Kaeo recorded 151 millimetres of rain, a very heavy fall arriving while many areas had not yet recovered from the first round of flooding.

Together these reports show that Sa Kaeo's flood was not a single event that came and went. It was prolonged, widespread, and compounded by fresh rain. Families who had started cleaning could face standing water or mud again, and shared spaces used as shelters might have to host people for longer than expected. All figures are as of their report dates and can change daily; follow the latest provincial and district announcements.

Sources: Thai PBS (30 Sept 2026) https://www.thaipbs.or.th/news/content/558897 and Krungthep Turakij (rainfall report, 4 Oct 2026). Figures change daily.

What Sa Kaeo looks like, and why a wide flood needs community-level thinking

Sa Kaeo is an eastern border province with farmland such as rice paddies, sugarcane and cassava fields, small towns at the heart of each district, and cross-border trade areas such as Aranyaprathet. Homes range from raised wooden houses and single-storey concrete homes to town shophouses and villages spread across low-lying plains.

When 210 villages flood at around the same time, labour and resources are spread thin. Families cannot wait for agencies to help clean every house quickly. Meanwhile, shared places such as schools, child development centres, temple halls, village meeting halls, subdistrict health clinics and fresh markets may themselves be affected, or pressed into service as gathering points, relief-distribution points and temporary shelters.

These are places where many people meet, share toilets, eat together and sleep close to one another. Without systematic cleaning and disinfection, a shared space can become a hub that passes infection to every household in the community. That is why this article looks at Sa Kaeo's recovery at household and community level together.

Example case: a village health volunteer in one Sa Kaeo district

Note: this is an illustrative example of a common situation in widespread floods. It is not a real person or village from the news.

Imagine Daeng, a village health volunteer (known in Thailand as an อสม.) in a Sa Kaeo village. Her own house has water almost knee-deep, but as a volunteer she also helps look after the village meeting hall, which has become a shelter for several families with elderly people and young children. The hall has just two toilets shared by dozens of people, a table for handing out meals, and sleeping mats laid side by side.

In late September the water in the village begins to drop. Some villagers go home to clean, and Daeng organises young people to help wash out the primary school, where the water has only just left the buildings. Before they finish, heavy rain returns. Village roads fill with water again, mud flows back into houses that had already been cleaned, two children in the hall develop diarrhoea, and an older resident cannot stop coughing.

Daeng has several decisions to make at once. How should cleaning be prioritised while rain continues? How can the shared toilets and meal table be managed so germs do not spread? How can she coach villagers to clean their own homes properly? And which disinfectant can be used across toilets, classroom floors, children's desks and plastic equipment without corroding them or giving off fumes that older people and children cannot bear? Her questions are the same ones facing community leaders, teachers and health volunteers across Sa Kaeo.

Germs to watch for after the Sa Kaeo flood

The World Health Organization (WHO), the US Centers for Disease Control and Prevention (CDC) and Thailand's Department of Disease Control agree that floodwater is often contaminated with sewage, chemicals and pathogens, and that common post-flood illnesses include gastrointestinal disease, skin infections, leptospirosis, conjunctivitis and respiratory infections. In Sa Kaeo's mix of homes, farmland and crowded shared spaces, the threats break down like this.

Gut bacteria

E. coli and Salmonella come from human and animal waste. When latrines and septic pits flood, these bacteria spread through water and mud, contaminating containers, meal tables and hands, and causing diarrhoea, abdominal pain, vomiting and food poisoning. In a shelter or community kitchen cooking for many people, a single lapse can make several people ill at once.

Leptospirosis

Flooded paddies and fields, and villages with straw stacks and rice barns, are home to rats. Floodwater carries Leptospira bacteria from rat urine into water and mud, and they enter the body through cuts or mucous membranes. Volunteers and villagers who wade to carry belongings, clean houses or check their fields need to be especially careful. High fever, headache, muscle pain especially in the calves, or red eyes within one to three weeks of wading mean a prompt visit to a doctor, mentioning the flood exposure.

Viruses in crowded spaces

Halls, shelters and classrooms hosting flood-affected families are where viruses spread fastest. Norovirus passes through hands, food and surfaces, causing clusters of vomiting and diarrhoea. Rotavirus is dangerous for young children. Influenza and RSV spread through droplets and contaminated surfaces and hit young children and older people hardest. Hand, foot and mouth disease viruses often circulate in child development centres and kindergartens through shared toys and utensils.

Mould and damp from repeated rain

Rain that keeps falling after a flood means buildings never get a chance to dry. Walls, ceilings, doors, wooden classroom desks, bookshelves, mats and mattresses stay damp, so mould keeps growing. CDC advises cleaning and drying within 24 to 48 hours to limit mould, but when rain continues that is hard to achieve, which makes repeated rounds of surface cleaning and disinfection even more important. Mould spores trigger allergies and asthma, a real problem for pupils returning to classrooms that were under water.

Who is most at risk in Sa Kaeo communities

Young children and pupils: immune systems still developing, they play in water, touch floors and put hands in mouths. When schools reopen, many children gather in recently flooded rooms; without proper disinfection, outbreaks become more likely.

Older people: especially those moved into shelters with diabetes, high blood pressure or lung disease, for whom respiratory viruses and diarrhoea can turn serious.

Pregnant women and people with chronic illness: they need extra attention to drinking water, food and hygiene, and should avoid wading.

Volunteers, teachers and community leaders: often forgotten, yet they work hardest, wade most often and have the most contact with sick people in shelters. They need adequate protective gear and must look after themselves to keep looking after others.

Farmers returning to flooded paddies and fields face leptospirosis and skin infection risk from long contact with water and mud.

The toll when a flood is wide and the rain keeps coming

On health, an illness that starts in a shelter or school can spread to many families at once. On time, repeated rain means some cleaning has to be done twice, and children stay out of school longer. On income, farming families and town traders lose weeks of earnings. And emotionally, the accumulated fatigue of people cleaning their homes again, and of volunteers caring for others while their own homes are flooded, is a burden that should not be overlooked. A clear, repeatable cleaning and disinfection plan built on suitable products reduces both the health risk and the exhaustion, because people stop improvising and start following steps they already know. For community leaders, that clarity also makes it far easier to share the work fairly among volunteers.

Why soap and bleach alone fall short in shared spaces after a flood

Washing away mud with clean water and detergent is the essential first step, because it removes dirt and a large share of germs. But soap and detergent are not designed for high-level disinfection, particularly in spaces used by many people.

Chlorine bleach is easy to find and recommended by health authorities at suitable dilutions, but it has clear limits in schools, halls and shelters. Its sharp fumes irritate the eyes and airways of the children and older people who have to stay in the space. It corrodes metal desk legs, stair rails, taps and hinges, and fades clothes, mats and curtains. Mixing it with some toilet cleaners releases dangerous gas. And once dry it leaves little ongoing protection, so in a space with dozens of people passing through each day, surfaces are re-contaminated quickly. Air freshener, incense, or painting over mouldy walls do nothing to reduce germs and may lead people to believe a space is clean when it is not.

The solution: CHEMGENE HLD4H, a medical-grade disinfectant for homes and shared spaces

CHEMGENE HLD4H is a medical-grade high-level disinfectant made in England. According to the product information, it is used in hospitals, clinics, laboratories, schools, offices, airports, homes, and elderly and child care settings, which matches the spaces Sa Kaeo communities now need to restore.

According to the product information, it is listed against bacteria, fungi and mould, mycobacteria, Salmonella, and viruses including influenza H1N1, RSV, norovirus, hand, foot and mouth virus and SARS-CoV-2. The product page states it kills within 1 minute, reports 99.85% efficacy against COVID-19, and provides residual surface protection for up to 14 days, very useful in halls and classrooms with constant foot traffic.

For spaces full of mixed equipment, the product information states CHEMGENE HLD4H is non-corrosive to stainless steel, aluminium, rubber, plastic and fibreglass, so it suits plastic tables and chairs, meal trays, water tanks, plastic toys and bathroom fittings. It is biodegradable, and the product page says it is safe for people, pets and medical equipment when used as directed. Dilutions of 1:30, 1:50, 1:60, 1:100 and up to 1:200 are available for different tasks per the label, so large volumes can be mixed for community-scale work.

The product page lists tests and approvals from Mahidol University, NHS England, ISO 9001:2015, ISO 13485, SGS, Intertek, CE, and EN 13727, EN 14348, EN 13624 and EN 14476, which helps teachers, leaders and volunteers explain to villagers why this product was chosen.

Remember: disinfectant does not prevent flooding and is not a medicine. CHEMGENE HLD4H reduces the risk of infection from surfaces during recovery. Anyone who is ill must see a doctor, and mud and dirt must always be removed before disinfecting.

A zone-by-zone recovery plan for Sa Kaeo: wash first, then disinfect

The same principle in every zone

Every space follows the same order: switch off power and check safety; wear boots, rubber gloves and a mask; remove damaged items; wash out all mud with clean water and detergent; rinse. Then dilute CHEMGENE HLD4H at the label rate, spray or wipe onto cleaned surfaces until fully wet, leave for the label's contact time, and ventilate to dry. If rain brings water and mud back, always start again with mud removal.

Zone 1: homes

Start with the rooms used most, the kitchen and bathroom, then the bedrooms of children and older people. Discard food, mattresses and absorbent materials that soaked. Wash hard containers, then disinfect. Clean and disinfect flooded water jars or tanks, using bottled or boiled water meanwhile. Disinfect high-touch points such as door handles, light switches (after an electrician's check), stair rails and the dining table on a regular round.

Zone 2: schools and child development centres

Before classes resume, remove mud from classroom floors, corridors, toilets, the canteen and the playground. Scrub desk and chair legs and shelves that were submerged. Wash plastic toys with dish detergent, then disinfect per label; throw away soaked fabric toys and cushions. Pupils' toilets, handwashing basins and canteen tables need a daily disinfection round in the first weeks back, and walls, ceilings and bookshelves should be checked for mould regularly.

Zone 3: temple halls, village halls and shelters

The priorities are shared toilets, the meal table, communal utensils and sleeping areas. Clean and disinfect shared toilets several times a day; wash and disinfect the meal table before and after every meal. Provide enough soap-and-water handwashing points. If anyone has diarrhoea or vomiting, separate a toilet or rest area, and clean and disinfect contaminated spots immediately following the label.

Zone 4: markets and town shops

Food stalls, chopping boards, trays and fridges reached by floodwater must have all mud removed, any food stock that touched the water discarded, and surfaces disinfected, especially stainless and plastic equipment, which CHEMGENE HLD4H does not corrode according to the product information. Shops selling cooked food should use water they are confident is safe.

10 reasons Sa Kaeo communities choose CHEMGENE HLD4H after the flood

1. Medical grade, made in England. Used in hospitals and in child and elderly care, according to the product information. See product details
2. Suited to schools and childcare. Listed against hand, foot and mouth virus, norovirus and RSV.
3. Covers gut bacteria. Including Salmonella, crucial for community kitchens.
4. Tackles mould in buildings kept damp by repeated rain. Listed against fungi.
5. Works within 1 minute. Per the product page, keeping disinfection rounds in halls and shared toilets quick.
6. Residual protection up to 14 days. Ideal for spaces with dozens of visitors a day. Order for your community
7. Non-corrosive to desks, chairs, plastic toys and stainless steel. Protects shared property.
8. Highly dilutable. 1:30 to 1:200 per label, covering many spaces from one bottle.
9. Biodegradable. Sensible when large volumes are used across many villages.
10. Tested and certified by multiple bodies. Helps leaders explain their choice. View certifications

Before and after: a Sa Kaeo village hall used as a shelter

For Daeng in our example, a zoned plan, proper protective gear and one disinfectant that works on toilets, meal tables and children's toys turn a confusing situation into a rota volunteers can share. When the next round of rain arrives, everyone knows where to begin.

Sa Kaeo recovery checklist for homes and communities

Every household

• Power off, check the structure, watch for snakes before entering
• Boots, rubber gloves and a mask whenever cleaning
• Discard food and absorbent items that soaked
• Remove all mud first, then disinfect with CHEMGENE HLD4H per label
• Clean and disinfect jars, tanks and containers
• Open the house to dry and check for mould daily

Schools, halls and shelters

• Assign someone responsible for each day's cleaning rounds
• Disinfect shared toilets several times a day and meal tables every meal
• Provide enough soap-and-water handwashing points
• Separate people with diarrhoea, vomiting or fever
• Wash and disinfect plastic toys; discard soaked fabric toys
• Label mixed solution bottles and keep them away from children

Watch for symptoms and see a doctor

• High fever, calf pain or red eyes after wading: see a doctor promptly
• Severe diarrhoea or dehydration, especially in young children and older people: see a doctor
• Coughing, breathlessness or high fever in a shelter: tell the health volunteer or subdistrict clinic immediately

Frequently asked questions about disinfecting after the Sa Kaeo flood

Q: It is still raining. Should I wait until it stops before disinfecting?
A: Not entirely. Bathrooms, kitchens and spaces used every day should be cleaned and disinfected as soon as the water leaves them. If water or mud returns, wash it out and disinfect again.

Q: Can CHEMGENE HLD4H be used in classrooms and childcare centres?
A: According to the product information it is used in schools and childcare, and the product page states it is safe for people when used as directed. Spray when children are not in the room, let surfaces dry and ventilate before they return.

Q: Is it suitable for plastic toys?
A: Yes; according to the product information it does not corrode plastic. Wash toys with dish detergent first, then disinfect per label. Throw away fabric toys that soaked.

Q: How often should a shelter be disinfected?
A: Shared toilets and meal tables several times a day, especially after meals and when someone is ill. Although the product information cites residual protection for up to 14 days, surfaces that are soiled, wiped or washed must be cleaned and disinfected again.

Q: Which dilution should we use?
A: The product offers 1:30, 1:50, 1:60, 1:100 and up to 1:200 for different tasks on the label. Use the label's recommended rate for high-risk areas such as shared toilets. Call 065-556-6294 for advice.

Q: Can disinfectant treat diarrhoea or leptospirosis?
A: No. It is for surfaces only. Anyone who is ill should see a doctor or visit the nearest subdistrict health clinic.

Q: Can Sa Kaeo communities order in bulk?
A: The World Health Disinfection team is based in Bangkok. Ask about orders, quantities and delivery to Sa Kaeo on 065-556-6294 or LINE @whd268.

Make Sa Kaeo's homes and shared spaces safe again

Get the mud out, then disinfect with medical-grade CHEMGENE HLD4H at the label's dilution and contact time.

Order CHEMGENE HLD4H

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

Related links and references

• All Chemgene products
• Disinfection services
• Thai PBS, Sa Kaeo flood in 9 districts (30 Sept 2026): https://www.thaipbs.or.th/news/content/558897
• Krungthep Turakij, Sa Kaeo rainfall of 151 mm (4 Oct 2026)
• World Health Organization fact sheets: https://www.who.int/news-room/fact-sheets
• CDC Floods: https://www.cdc.gov/floods/
• Thailand Department of Disease Control: https://ddc.moph.go.th/

Flood information is based on news reports as of the dates stated; figures can change daily. Product information is from the product page. Always read the label before use.