Latest summary: According to DDPM data as of 06:00 on 7 October 2026, Chachoengsao had 11 affected districts, 93 sub-districts, 844 villages and 64,516 households, and was one of the provinces where water was still rising. The household count has grown with each report since 4 October. Figures change daily, so check local official updates, and spray only after the water has left and the house has been cleaned.

A Typical Scenario: A Stilt House on the Bang Pakong in Ban Pho

This illustrative example case is drawn from common post-flood situations. It is not the account of a real person.

Uncle Prayoon and Auntie Boonmee have lived their whole lives in a wooden house on high stilts beside the Bang Pakong River. They are used to the river rising and falling with the seasons. The open space under the house was where they spent their afternoons, with a bamboo platform, a dining table and a corner for garden tools. The kitchen sits in a smaller concrete extension attached to the main house.

This year the water did not arrive in a single night. It rose a few centimetres every day. First it covered the front yard, then the space under the house, and then it slowly crept into the lower kitchen. Uncle Prayoon told his children over the phone that this year's water "just won't leave", because every morning the level was the same or a little higher. His son, who works in Bangkok, drove down to help lift the fridge and gas stove into the main house.

The water under the house sat for days and turned dark and foul-smelling. Rubbish lodged against the stilts and mosquitoes got worse each night. Auntie Boonmee, who has diabetes, got a small cut on her foot while wading to fetch things. When it became red and swollen, her son took her straight to a doctor, who dressed the wound and told her not to wade again.

As the water left the kitchen, the son shovelled out mud and washed the kitchen floor, the platform and the table. But the wooden posts, the kitchen's timber walls and the concrete floor still had dark green stains, and a musty smell drifted up to the bedrooms. After some research he learned that homes soaked in still water for a long time should be disinfected after cleaning. He contacted WHD on LINE with photos of the under-house area, kitchen and bathroom. The team advised scrubbing the algae and mud off the posts, letting the floor dry reasonably, and then booked a trip from Bangkok according to the job queue.

His situation can be found all along the Bang Pakong. Water that rises slowly and falls slowly keeps homes soaked for a long time, so germs and moisture build up far more than in a flash flood. Recovery takes time and a step-by-step plan.

Chachoengsao Flood 2026: The Latest from DDPM and News Reports

Everything here comes from dated sources. Read it as a snapshot on those dates.

• DDPM data as of 06:00 on 7 October 2026 (published by the Government Public Relations Department): 11 affected districts, namely Bang Nam Priao, Bang Khla, Phanom Sarakham, Plaeng Yao, Tha Takiap, Mueang Chachoengsao, Sanam Chai Khet, Ban Pho, Bang Pakong, Khlong Khuean and Ratchasan, with 93 sub-districts, 844 villages and 64,516 households. Water level: rising.
• Household trend: DDPM figures published by Thai PBS and Krungthep Turakij show 58,960 affected households on 4 October 2026, 63,071 on 6 October and 64,516 on 7 October.
• iGreen, 6 October 2026: all 11 districts flooded, with the main problem described as water entering faster than it drains along the Bang Pakong River.

A figure that rises with every new report shows that, as of 7 October 2026, Chachoengsao had not clearly entered the receding phase. Many families are still preparing and watching. What they can do now is move belongings up, protect important documents, photograph the damage and plan the recovery in advance, so they can start as soon as the water leaves.

The province is varied: riverside communities in Mueang and Ban Pho, farms and aquaculture ponds, and towns in Phanom Sarakham, Sanam Chai Khet and Tha Takiap. Each type of home faces different post-flood risks. Stilt houses need attention to posts and the ground underneath; single-storey concrete homes to walls and bedrooms; shops and canteens to food-preparation areas.

The National Picture, According to DDPM on 7 October 2026

According to DDPM data as of 06:00 on 7 October 2026, published by the Government Public Relations Department and Thai PBS, Thailand had flooding in 27 provinces and Bangkok, covering 123 districts, 984 sub-districts and 7,215 villages, with 1,154,875 households and more than 3.1 million people (3,160,972) affected. DDPM attributed the floods to heavy to very heavy rain in many areas combined with water flowing from the North.

Earlier figures show the trend. Thai PBS reported 154 districts, 1,209 sub-districts and 1,171,165 households on 4 October 2026, and Krungthep Turakij reported 126 districts, 999 sub-districts and 1,149,285 households as of 6 October 2026. The overall area is shrinking, but some provinces are still seeing more water.

According to DDPM on 7 October, water was still rising in Sing Buri, Suphan Buri, Ang Thong, Phra Nakhon Si Ayutthaya, Samut Prakan, Pathum Thani, Ratchaburi, Samut Songkhram, Prachin Buri and Chachoengsao. Thai PBS reported that DDPM continues to monitor around the clock. Both Chachoengsao and Prachin Buri therefore remain places where residents should follow the news closely.

Post-Flood Disinfection Spraying in Lat Krabang, Bangkok: The Latest Situation

Lat Krabang, on Bangkok's eastern outskirts, is threaded with main roads linking communities, housing estates, factories and the area around the airport. This year many of those roads flooded, and the district also received water drained from Nong Chok. Confirmed by news reports:

• 26 September 2026: when the governor declared disaster areas in Nong Chok, floodgates were reported fully open to drain water towards Lat Krabang.
• Main roads, 4 October 2026: Lat Krabang Road near the airport junction had 20 to 30 cm of water with small cars prohibited; Luang Phaeng Road at Lotus Lat Krabang about 20 cm; Chao Khun Thahan Road 15 to 25 cm.
• Kheha Romklao: more than 1 metre at Kheha Romklao 64 on 28 September; at 13:00 on 4 October, Kheha Romklao Road from Romklao police station to Khlong Lam O Tan (about 800 m) had 60 to 80 cm and was closed to all vehicles; on 5 October the water fell by 30 to 70 cm; on 6 October drainage beat its target, with the area expected to dry in two to three days.
• 5 October 2026: Lat Krabang was one of four districts where the BMA set up mobile pumps, along with Sai Mai, Khlong Sam Wa and Saphan Sung.
• 6 October 2026: Chalong Krung Road was the only main road still flooded. As of 08:30 that day, more than 49,000 people had registered for relief at claim.bangkok.go.th, with Lat Krabang the highest, followed by Bang Kapi and Sai Mai.
• High-impact district: per BMA information published on 29 to 30 September 2026, Lat Krabang was one of 15 high-impact districts, together covering 748 communities.

The highest relief registration count in Bangkok reflects real damage to many homes: townhouses along main roads, housing estates with flooded sois, and blocks in the public housing community. As roads reopen, many owners will start cleaning at once, which is the right moment to plan disinfection too.

WHD sprays homes, roadside shops, factory canteens and common areas of housing estates and condominiums in Lat Krabang, using the same process as in Chachoengsao. Customers with homes in both places can mention both when booking. Appointments are by phone and LINE, subject to the queue, with no same-day guarantee.

What Long-Standing Water in Chachoengsao Leaves Behind

Slow floods mean water sits still for days or weeks. Oxygen in the water drops, leaves, rubbish and sewage start to rot, and the water turns dark and foul. These conditions suit many microbes, and when the water recedes the sediment it leaves on floors and walls is full of them.

Sewage bacteria. Many riverside homes use septic tanks or soak pits. Submerged for long periods, they release waste into the floodwater. Gut bacteria such as E. coli and Salmonella can remain on kitchen floors, under-house tables and dishes. Contaminated food, water or hands can cause diarrhoea, cramps and vomiting. Drink bottled or boiled water and discard any food that touched floodwater.

Leptospirosis and wound infections. Leptospira from rat and animal urine can survive in still water and mud. Wear boots and rubber gloves when wading or shovelling. Sudden high fever, headache or muscle pain, especially in the calves, after flood exposure means seeing a doctor and mentioning the wading. Cuts exposed to dirty water can easily become infected, particularly in people with diabetes or weak immunity; red, hot, swollen or pus-filled wounds need medical care.

Viruses spread by hands and surfaces. Long floods mean families stay with relatives or in temporary shelters, and children play together in tight spaces. Hand, foot and mouth disease viruses, norovirus and RSV spread more easily. Clean toys, dining tables, door handles and stair rails before use.

Mold on wood and plaster. Stilt houses whose posts and walls have soaked for weeks are very prone to mold and algae. WHO and CDC advise cleaning and drying as soon as possible, generally within 24 to 48 hours after the water goes, but in homes soaked for weeks mold often starts before the water even leaves. Spores can trigger allergies, congestion, coughing or asthma. Older people and anyone with lung disease should stay away during cleanup.

Mosquitoes and standing water. Water left in containers, tyres and hollows after a flood breeds mosquitoes. Tip it out. WHD's spraying targets germs on surfaces; it is not mosquito control.

Any illness after a flood should be checked by a doctor. This is general prevention information, not treatment advice.

Why Washing Is Not the Last Step, and Mistakes to Avoid

Without disinfection, families may fall ill repeatedly, timber decays faster, ruined furniture and mold-damaged walls drive up costs, food shops lose customers to lingering smells, and weeks of living with water feel like they never end. Common mistakes:

• Pressure-washing waterlogged timber, which can push dirty water deeper into wood and joints.
• Leaving mud under the house, where it keeps feeding germs and smells into the bedrooms.
• Using undiluted bleach or mixing products, risking irritating fumes.
• Reusing soaked mattresses and pillows, which are very hard to clean thoroughly.
• Masking smells with incense or perfume.
• Working without gloves, boots and a mask.

Riverside homes also face a timing problem. Because the water in Chachoengsao has been rising slowly rather than leaving in a day, families often start cleaning one room while another is still wet, or wash the kitchen before the space under the house has dried. That is understandable, but it means mud and moisture can be tracked back into rooms that were already cleaned. A simple plan helps: finish the under-house area and drains first, then work from the upper rooms down towards the kitchen and bathroom, and keep a note of which spaces are washed and dry. When the technicians arrive, that list becomes the zoning plan, so every space is disinfected in the right order and nothing is missed.

Once mud is out and surfaces are properly washed, spraying by trained technicians helps disinfect cleaned surfaces evenly, including wooden posts, floor gaps and the undersides of furniture.

How WHD's Post-Flood Disinfection Spraying Service in Chachoengsao Works

According to WHD's service information, trained technicians spray and/or fog with ULV (Ultra Low Volume) fine mist using 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, claims 99.99% efficacy, and lists endorsements from the Department of Medical Sciences, Mahidol University, NHS England and EN 14476:2013+A2:2019.

For organisms without listed test results, such as Leptospira, E. coli or wound-infecting bacteria, WHD makes no specific kill claim. They fall within the bacteria group the product says it covers, and WHO and CDC advise cleaning and then disinfecting flood-contaminated surfaces. Ask the team if you need test documents for a specific organism.

1. Survey: send photos of each room, the under-house area and the waterline on LINE.
2. Mud removal and washing first, including under the house, posts, drains and bathrooms.
3. Zoning: kitchen, bathroom, bedrooms, under-house area, shopfront or canteen.
4. Preparation: people, pets, food and personal items leave each zone.
5. Spraying zone by zone, focusing on high-touch points and the longest-soaked areas.
6. Re-entry: about 30 minutes per the service page; follow the technicians' on-site timing.

WHD is based in Bang Khae, Bangkok 10160. Chachoengsao jobs are booked on 065-556-6294 or LINE @whd268. There is no provincial branch and no same-day guarantee; prices follow the survey. Per the service page, customers receive a free CHEMGENE spray bottle and WELLGIENIC wet wipes, and tax invoices are available. For lingering odours, residential ozone disinfection is a complementary service, done only in an empty, closed space.

10 Reasons Chachoengsao Homes and Shops Should Disinfect After the Water Falls

1. All 11 districts flooded, per iGreen and DDPM, so many homes will recover at once.
2. Households affected rose from 58,960 (4 Oct) to 64,516 (7 Oct), so water is still soaking homes.
3. Still water lets sewage and organic matter rot into the sediment.
4. Stilt houses have many surfaces: posts, under-house floors and platforms.
5. Older people and diabetics in riverside homes need systematically disinfected spaces.
6. Trained technicians zone the work so nothing is missed.
7. ULV mist reaches timber gaps and joints that cloths cannot.
8. The service page lists hospitals, schools, offices, banks and residential buildings among its customers.
9. Short wait: about 30 minutes per the service page, following technicians' instructions.
10. Easy contact through the disinfection service page, phone or LINE, with tax invoices.

Before and After Disinfection Spraying

Example Case: A Made-to-Order Food Shop in Bang Khla

An illustrative example case, not a real shop or person.

Ann runs a made-to-order food shop in a shophouse not far from the river. Shin-high water stayed for almost two weeks while the shop was closed and the fridge and stoves sat upstairs. When it receded, she and her staff shovelled out mud, threw away all ingredients and condiments, and washed floors, walls and counters. The kitchen drain still smelled, and mold had appeared under the sink. WHD advised flushing the drain, replacing the swollen board under the sink and airing the shop, then sprayed the kitchen, shopfront and toilet while the shop was still closed. After the re-entry time, Ann washed all dishes and utensils again and reopened for her regulars with more confidence.

Recovery Checklist for Chachoengsao and Lat Krabang

• While water is high: follow local announcements daily, keep documents and medicines up high, avoid wading (or wear boots), and book a survey in advance.
• When it recedes: have the wiring checked, clear mud inside and under the house, discard food and ruined items, and wash floors, walls, posts, furniture and drains.
• Ventilate, photograph damage, and tip out standing water around the house.
• On spraying day, people, pets and food leave each zone.
• Afterwards, return at the stated time, rewash food containers and watch timber and walls for new mold.
• See a doctor for fever, diarrhoea, rashes, infected wounds or calf pain.

FAQ: Post-Flood Disinfection Spraying in Chachoengsao

Does WHD serve Chachoengsao? Yes, by appointment on 065-556-6294 or LINE @whd268. The team travels from Bangkok; there is no local branch.

The water is still rising. Can I contact you now? Yes, to plan and reserve a slot. Spraying itself waits until the water has gone and the house is washed.

Can you treat a stilt house? Yes. The team assesses posts, the under-house floor and the house itself and zones accordingly.

Can spraying replace washing? No. Mud reduces disinfectant performance, so washing comes first.

How long do we stay out? About 30 minutes per the service page; follow the technicians' timing.

Does it deal with mosquitoes? No. This is surface disinfection, not mosquito control. Remove standing water and follow public health advice on bite prevention.

Do you work in Lat Krabang? Yes: homes, shops, canteens and common areas. Mention both addresses if you have two.

Cleanup Done? Let WHD Disinfect Your Riverside Home

Book a survey for homes, shops and canteens in Chachoengsao or Lat Krabang, Bangkok.

See WHD Disinfection Service

Call 065-556-6294  |  LINE @whd268

Related Services and References

• WHD Disinfection Spraying Service
• CHEMGENE HLD4H disinfectant
• Residential ozone disinfection

• PRD, DDPM data 7 Oct 2026: https://www.prd.go.th/th/content/category/detail/id/33/iid/548715
• Thai PBS 7 Oct 2026: https://www.thaipbs.or.th/news/content/559271
• Thai PBS 4 Oct 2026: https://www.thaipbs.or.th/news/content/559135
• Krungthep Turakij, 6 Oct 2026: https://www.bangkokbiznews.com/news/news-update/1255230
• iGreen, Chachoengsao, 6 Oct 2026: https://www.igreenstory.co/chachoengsao-flood/
• TopNews, Nong Chok drainage: https://www.topnews.co.th/news/1702433
• Krungthep Turakij, Lat Krabang roads: https://www.bangkokbiznews.com/news/news-update/1254920
• Siam Rath, roads 4 Oct 2026: https://siamrath.co.th/quality-of-life/326332
• Thai PBS, Kheha Romklao: https://www.thaipbs.or.th/news/content/558737
• Khaosod, Kheha Romklao Road: https://www.khaosod.co.th/around-thailand/news_10424523
• Siam Rath, 5 Oct 2026: https://siamrath.co.th/health/326405
• MGR Online, 6 Oct 2026: https://mgronline.com/politics/detail/9690000097161
• Prachatai / Rocket Media Lab, 7 Oct 2026: https://prachatai.com/journal/2026/10/119021
• CDC Floods: https://www.cdc.gov/floods/ ; WHO: https://www.who.int/news-room/fact-sheets ; DDC: https://ddc.moph.go.th/