The Sa Khwan flood in 2026: what the news reported

According to a TNEWS report dated 26 September 2026, in Sa Khwan Subdistrict, along Khlong Phra Sathueng near Highway 359 in Mueang Sa Kaeo District, Sa Kaeo Province, floodwater rose almost to the bridge railings, nearly one metre deep, and inside the community it was more than one metre deep. Thirty households in Sa Khwan were evacuated, and 504 households were affected across Mueang Sa Kaeo District. The causes were accumulated rainfall, runoff flowing down from higher ground, and water released from the Phra Sathueng Reservoir (source: tnews.co.th). These figures reflect the day of the report and may change daily.

Nationally, a Department of Disaster Prevention and Mitigation update at 06:00 on 5 October 2026, reported by Daily News, listed 26 provinces plus Bangkok as affected, covering 1,270,151 households (source: dailynews.co.th).

The Sa Khwan flood combined three sources: steady rain, runoff carrying soil and mud down from the hills, and reservoir releases. When all three met in a canal running through the community, water spilled into canal-side homes deep enough to reach power sockets, refrigerators and beds. It carried silt, waste from submerged septic tanks and rubbish from the road. Depth matters too: walls wet well above waist height give mold far more room to grow once the water drops than in a home flooded only to the ankles.

Flood spots in Sa Khwan, Sa Kaeo, from the news report, and risk spots at home

The report names these locations:

• Along Khlong Phra Sathueng near Highway 359, with water almost at the bridge railings and nearly one metre deep.
• The community in Sa Khwan Subdistrict, with water over one metre deep and 30 households evacuated.
• Mueang Sa Kaeo District, with 504 households affected as of the report date.

It does not name lanes or individual houses, so we add nothing beyond that. In homes flooded deeper than one metre, these are the places to inspect after the water drops:

• Walls inside and out up to the waterline and a little above, because damp wicks upward.
• Bathrooms and septic tanks that were fully submerged at peak.
• Kitchens, food cupboards and refrigerators, frequent sources of smell and germs after floods.
• Bedrooms, mattresses and wardrobes that soaked for a long time.
• Children's toys and school supplies kept on the ground floor.
• Shopfronts and roadside trading areas for households running small businesses.

A typical scenario: a canal-side home that needs to reopen its shop

(An illustrative example scenario, not a real resident of Sa Khwan.)

Kaew is a mother of two who runs a small grocery at the front of her canal-side house in eastern Thailand. When the canal rose almost to the bridge railings, officials helped move her family to a temporary shelter. Her youngest is three and her eldest is in primary school. While they stayed alongside other families, the little one developed a runny nose and cough.

When the water went down, Kaew came home to a waterline above waist height. Every lower shelf in the shop was soaked, the fridge reeked, the bathroom held black sediment, and the children's toys lay in heaps of mud. She wanted to reopen as soon as possible, because the shop is the family's main income, but she was not sure a house that had been so deeply flooded was safe for a small child, or where to begin.

Her questions are the same ones many canal-side families ask, so the ranking below is ordered around what a family like hers needs to know first.

How we built the post-flood germ ranking for Sa Khwan, Sa Kaeo (an editorial ranking)

This is an editorial ranking by WHD. It is not official, not statistical, and not based on testing in Sa Khwan. Our criteria:

1. Link to flooding in WHO, CDC and Department of Disease Control guidance.
2. Fit with deep canal-side flooding, where septic tanks were submerged and walls soaked high.
3. Fit with water from hill runoff and reservoir releases, which brings soil down from higher ground.
4. Local vulnerable groups: young children and older adults in evacuated families, and people wading to move belongings.
5. Persistence and ease of spread, described qualitatively, with no unsourced numbers.

Nine germs to watch in canal-side homes along Khlong Phra Sathueng, Sa Khwan

No. 1: E. coli and sewage bacteria (Escherichia coli)

When water rises above one metre, canal-side septic tanks and drains are completely submerged and waste spreads through the house with the water. WHO and CDC advise treating all floodwater as potentially contaminated with sewage, and E. coli is the marker for that contamination. Risk spots are every floor, the bathroom, the kitchen and toys that soaked. Expect diarrhoea, stomach pain and vomiting; small children can dehydrate quickly. Throw away fabric toys and anything that cannot be washed, wash hard plastic toys in soapy water and then disinfect them. E. coli belongs to the bacteria group the product says it covers, with no organism-specific test on the website; you can ask WHD for test data.

No. 2: Leptospira, the cause of leptospirosis

Canal communities have rats living along banks and in drains. As water rises they move into houses and onto higher ground, and their urine mixes with water and mud. People wading through deep water to move belongings or check their homes face the highest risk. Watch for sudden high fever, headache, calf pain and red eyes, and see a doctor promptly if they appear after wading, mentioning your exposure. Always wear boots and rubber gloves and cover wounds. Indoors, wash kitchens, food cupboards and corners rats may use, then spray. Leptospira falls in the bacteria group, without an organism-specific test on the website.

No. 3: Mold in deeply flooded homes (Aspergillus, Penicillium, Cladosporium, Stachybotrys)

Walls soaked above the waist give mold far more surface than a shallow flood. Gypsum board, insulation, mattresses, sofas and particle-board cupboards hold water inside and dry slowly. WHO and CDC advise removing porous materials that cannot be dried and drying the home as fast as possible. Health effects include a blocked nose, coughing, stinging eyes and asthma flare-ups in allergic children. Product information states coverage of fungi, but spraying should only happen after heavily molded materials are removed and the house is dry.

No. 4: Norovirus and rotavirus in families with small children

These viruses spread easily by hand, food and shared surfaces, especially in shelters and in homes that have just been reoccupied with limited clean water. Rotavirus is common in young children; norovirus causes sudden vomiting and diarrhoea at any age. Wash hands with soap before preparing food and after changing nappies, and anyone with symptoms should not cook for others. Product information states coverage of norovirus; rotavirus belongs to the virus group without an organism-specific test on the website.

No. 5: Hand-foot-and-mouth viruses and RSV in children (Enterovirus, RSV)

When evacuated families with small children share space, children play together, share toys and touch the same surfaces. Hand-foot-and-mouth disease causes fever, mouth sores and a rash on hands and feet; RSV causes a runny nose and cough and can make breathing hard for some very young children. If a child breathes fast, struggles to breathe or will not eat or drink, see a doctor immediately. Wipe and disinfect toys, tables, cot rails and door handles. Service information states coverage of hand-foot-and-mouth virus and RSV, which makes spraying particularly suitable for homes with young children.

No. 6: Hepatitis A virus

Hepatitis A spreads through water and food contaminated with faeces, so the risk rises while community water supplies may be affected. Symptoms include fever, tiredness, loss of appetite, nausea and yellowing of the skin and eyes, sometimes weeks after exposure. Drink safe or bottled water, eat freshly cooked food, wash hands often, and ask a doctor about vaccination if you may be at risk. It belongs to the virus group, without an organism-specific test on the website.

No. 7: Melioidosis bacteria carried by hill runoff (Burkholderia pseudomallei)

The report says part of the water came as runoff from higher ground, bringing soil with it. Burkholderia pseudomallei lives in soil and surface water in Thailand and enters through wounds, by breathing in muddy spray or by swallowing contaminated water. People with diabetes or kidney disease face more serious illness. Symptoms may include fever, cough or abscesses, possibly long after exposure, so tell your doctor you handled mud after the flood. Wear boots and gloves while shovelling. Spraying reduces bacteria on cleaned indoor surfaces as part of the bacteria group, but there is no organism-specific test and it does not treat outdoor soil.

No. 8: Wound bacteria and tetanus risk (Staphylococcus aureus, Streptococcus)

Deep floodwater carries wood, glass, nails and road debris into homes, so cuts are common while wading or carrying things. Wounds exposed to muddy water can become red, hot, swollen and full of pus. Tetanus comes from soil spores entering deep wounds, and spraying does not prevent it. Rinse wounds with clean water, cover them and see a doctor about vaccination. The two bacteria belong to the group the product mentions, without organism-specific tests on the website.

No. 9: Bacteria in stagnant water and household plumbing (Pseudomonas, Legionella)

After a flood, water tanks, pipes and shower heads left unused for days may hold stagnant water. CDC advises cleaning and flushing water systems before use. Pseudomonas favours surfaces that stay wet, while Legionella is linked to unused water systems and water spray. Older adults and people with weakened immunity are more at risk. Clean the water tank, run every tap for a while and replace sour sponges and cloths. Both belong to the bacteria group; organism-specific test data can be requested from WHD.

What happens when post-flood germs are ignored in a canal-side home

For families with a shop at the front, like Kaew's, the damage is more than spoiled stock. Reopening before the kitchen and shelves are cleaned and disinfected risks illness among customers and family members, hurting income and the community's trust. Small children returning to a damp house may suffer repeated allergies or diarrhoea, parents lose workdays taking them to the doctor, and cleaning the same rooms again because the smell will not go wastes time and effort just when the family needs to recover fastest.

Why scrubbing by hand alone may fall short after more than a metre of water

A deeply flooded house has many times more surface to deal with than one flooded to the ankles: walls above waist height, the back of the fridge, under beds, window ledges and every shop shelf below the waterline. Brushes and cloths remove dirt, but reaching everything evenly is hard. Bleach has to be diluted correctly, used with ventilation and never mixed with products containing ammonia or acid, and it fades paint and fabric.

Many families repaint straight away to make the house look new, but if the wall is still damp inside, the paint blisters and mold comes back. Fans dry things faster but do not disinfect, and air fresheners only mask odours. WHO and CDC repeat the same order: clean first, then disinfect. Technicians who carry out the disinfection step zone by zone help make sure no area is skipped.

WHD post-flood disinfection spraying for homes and shops in Sa Kaeo

WHD is based in Bang Khae, Bangkok 10160, and has no branch in Sa Kaeo. Jobs in Mueang Sa Kaeo can be booked by phone on 065-556-6294 or through LINE @whd268, scheduled in advance according to team availability. We do not guarantee same-day arrival, and the team will advise on preparing your home while you wait.

According to service information, trained technicians spray and/or ULV-fog (Ultra Low Volume fine mist) with CHEMGENE HLD4H, a medical-grade disinfectant from the UK containing Benzalkonium Chloride and Didecyldimethylammonium Chloride. The service page lists viruses, bacteria and fungi including COVID-19, RSV, H1N1, H5N1 and hand-foot-and-mouth virus, states 99.99%, and cites the Department of Medical Sciences, Mahidol University, NHS England and EN 14476:2013+A2:2019. WHD calls the product broad-spectrum and states no strain count. Listed customers include hospitals, schools, malls, airports, offices, airlines, banks and residential buildings.

Service steps for a canal-side home

1. Send photos for assessment: photograph the waterline on the walls, the bathroom, kitchen, bedrooms and shopfront, and send them via LINE @whd268.
2. Remove mud and wash: the household or volunteers shovel out mud, remove soaked materials, wash surfaces and let them dry. Spraying always comes after this step.
3. Prepare and zone: put away food, food stock, dishes, toys and personal items. Everyone, including pets, leaves the zone being sprayed.
4. Spray: technicians work zone by zone, covering walls up to the waterline, bathrooms, kitchens, children's rooms and shared touch points.
5. Wait and return: according to service information, wait about 30 minutes or as long as the technicians advise, then rinse food-contact surfaces and any toys children put in their mouths with clean water.

We do not claim the product leaves no residue, and spraying is not a substitute for treatment. Anyone with fever, calf pain, diarrhoea, breathing difficulty or an inflamed wound should see a doctor.

10 reasons Sa Khwan canal-side homes should choose WHD spraying

1. Deeply flooded homes have a lot of surface; zone-by-zone spraying covers it more evenly than wiping by hand.
2. Medical-grade CHEMGENE HLD4H, which the disinfection spraying service says covers viruses, bacteria and fungi.
3. Service information states coverage of hand-foot-and-mouth virus and RSV, which suits homes with small children.
4. It helps front-of-house shops reopen with more confidence after cleaning.
5. It follows the clean-then-disinfect order from WHO and CDC.
6. A wait of about 30 minutes per service information before using the space again.
7. Trained technicians advise on what to put away and how to zone safely.
8. A tax invoice is available per the service promotion, handy for shops that need paperwork.
9. A free CHEMGENE spray bottle and WELLGIENIC wet tissues for ongoing touch-point care.
10. Upcountry jobs planned by phone and LINE, with no travel needed on your side.

Before and after spraying a canal-side home

Example case: a front-of-house grocery reopening after working through the nine ranks

(An illustrative example case, not a customer review.)

Kaew left the children with relatives and, with her husband and neighbours, shovelled out mud wearing boots and gloves. She discarded all soaked food stock, the mattresses and the children's soft toys, washed hard plastic toys separately, opened doors and windows for several days, removed moldy wall panels and cleaned the water tank before turning the supply back on. Then she sent photos to the technicians for assessment.

Once the house was dry enough, the team sprayed the shopfront, kitchen, bathroom and bedrooms zone by zone while the family waited outside for the time the technicians gave. Afterwards Kaew rinsed the food shelves with clean water, set up a handwashing point at the shop entrance and kept a spray bottle for wiping the counter every day. When the children came home, the bedroom no longer smelled musty, and she knew that fast breathing or a high fever meant going straight to the doctor.

Recovery checklist for a canal-side home

Before spraying: wait for authorities to say it is safe to return; switch off the mains and have an electrician check submerged sockets; wear boots, rubber gloves and a mask and cover every wound; discard food, medicines, mattresses and soft toys that soaked; remove wall panels or insulation that absorbed water and grew mold; clean the water tank and run every tap before use; wash all surfaces and let them dry before booking.

After spraying: wait as long as the technicians advise; rinse food-contact surfaces and children's toys with clean water; ventilate and look for new mold; set up handwashing points, especially at the shop entrance and bathroom; watch children and older adults and see a doctor for fever, breathing difficulty, diarrhoea or yellowing skin.

FAQ: post-flood germ ranking for Sa Khwan, Sa Kaeo

Is this ranking based on testing in Sa Khwan?
No. It is WHD's editorial ranking based on WHO, CDC and Department of Disease Control guidance and the type of flooding described in the news.

Should soaked toys be kept or thrown away?
Throw away soft toys and toys with gaps where water can sit. Wash hard plastic toys in soapy water, disinfect them, then rinse with clean water before children play with them.

Should a front-of-house shop be sprayed before reopening?
Clean and dry it first, then spray. Rinse shelves used for food with clean water afterwards, as the technicians advise.

When can small children go back inside after spraying?
According to service information, after about 30 minutes, or as the technicians advise.

Does WHD have a branch in Sa Kaeo?
No. WHD is in Bang Khae, Bangkok. Book upcountry work in advance on 065-556-6294 or LINE @whd268.

The canal is still rising and falling. Should we spray now?
Wait until the water has dropped and conditions are stable. If water comes back, surfaces will be contaminated again. Follow Sa Kaeo provincial announcements.

House cleaned? Let WHD spray it before the children come home

Book post-flood disinfection spraying for homes and shops in Mueang Sa Kaeo in advance.

See the Disinfection Spraying Service

Call 065-556-6294 | LINE @whd268

Related services and references

• WHD disinfection spraying service
• Ozone treatment for musty homes (complementary)
• TNEWS, 26 Sep 2026: flooding in Sa Khwan along Khlong Phra Sathueng
• Daily News, DDPM 5 Oct 2026: dailynews.co.th
• WHO fact sheets, CDC Floods, Department of Disease Control