Chonburi Flood Figures According to DDPM

According to the Department of Disaster Prevention and Mitigation (DDPM) report of 2 October 2026, 10 districts of Chonburi province were affected: Mueang Chonburi, Sattahip, Phanat Nikhom, Si Racha, Bang Lamung, Ban Bueng, Nong Yai, Ko Chan, Phan Thong and Bo Thong. A total of 118,723 households were affected and water levels were rising. These figures reflect the report date and change daily, so follow the latest DDPM and provincial announcements closely.

Nationally, DDPM reported on the same day that 31 provinces plus Bangkok were flooded, affecting 1,245,581 households and 3,535,206 people, caused by heavy to very heavy rain together with runoff from the north. Compared with its neighbours, Chonburi has one of the highest numbers of affected households in the eastern region.

What makes Chonburi different is the variety of buildings involved. In the same province you find housing estates, townhouses, dormitories and rental rooms for industrial-estate workers, condominiums, hotels and guesthouses in tourist towns, seaside restaurants, and orchard homes and wooden houses in districts that are still largely rural. Each faces a slightly different germ and odor problem after the water drops, but the same recovery principles apply.

While Chonburi's Water Is Still Rising: What to Do Before Thinking About Disinfection

Because the latest report says water levels are still rising, the first priority is safety and health, not cleaning.

• Cut power to the ground floor before water reaches the sockets, and never touch electrical equipment while wet.
• Avoid wading. If you must, wear boots, cover any wounds and wash with soap as soon as you are out of the water.
• Move belongings up high, especially mattresses, documents, medicine and dry food. Much of what gets submerged cannot be saved.
• Store clean drinking water and ready-to-eat food. Never eat food that has touched floodwater.
• Watch for snakes, centipedes and scorpions escaping the water into dry places.
• Photograph the damage for insurance, your landlord or aid applications.
• Follow official announcements and evacuate immediately when told to.

Once the water starts to fall and it is safe to go home, move on to mud removal, washing, drying and disinfection, in that order. Planning now helps you avoid rushed, wrong decisions on the day the water goes down.

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

A Ground-Floor Rental Room in Si Racha: Coming Home From a Night Shift to a Different House

Nok works on a production line at a factory in Si Racha district. She rents a ground-floor room in a three-storey apartment block with her husband and their three-year-old daughter. One morning after a night shift, she came home to find water a hand's span deep inside. The tiled floor had turned into a murky pool, a bag of nappies, soft toys and shoe boxes were floating, and the thin latex mattress on the floor had soaked up so much water it was too heavy to lift.

Two days later the water receded. Nok and her husband swept out the mud, mopped with a scented floor cleaner and propped the mattress against the wall to dry. But the room has just one window and poor airflow. Within a few days, a smell like wet socks mixed with drain odor greeted them every time they opened the door. Grey-green spots appeared along the bottom of the wall where the water had stood. Their daughter had diarrhoea for two days running, and Nok began waking up with a blocked nose and a sore throat.

This happens in many rental rooms and dormitories in industrial areas. Most tenants work shifts and have no time to dry their rooms properly, the rooms are small and stuffy, and most belongings sit on the floor. What should happen right away is a visit to a doctor to check the child for dehydration, throwing out the flooded mattress, and a conversation with the building owner about restoring the whole building, not just one room, because mold and odor in hallways and neighbouring rooms will always creep back.

Every Germ That Comes With the Chonburi Flood: Bacteria, Viruses, Mold and Odor

Floodwater in Chonburi passes through dense neighbourhoods, drains, septic tanks, markets, restaurants, farms and fields, carrying a wide mix of contaminants into homes. They fall into these groups.

Bacteria from sewage

E. coli and other gut bacteria signal faecal contamination. In crowded towns where drainage cannot cope, sewage from pipes and septic tanks often overflows into floodwater. These bacteria cling to mud, wall bases, furniture and kitchen utensils, and can cause diarrhoea, vomiting and wound infections.

Leptospira, which causes leptospirosis, is found in both towns and countryside, because rats live in drains, markets and rice fields alike. It enters through wounds or skin that has been soaked for a long time. Symptoms include sudden high fever, headache and muscle pain, especially in the calves, and sometimes red eyes. Anyone who develops these symptoms within about two weeks of wading must see a doctor and mention the flood exposure.

Viruses spread through hands and surfaces

Norovirus, rotavirus and hepatitis A spread when people touch contaminated surfaces and then their mouths, or through unclean food and water. In dormitories with shared bathrooms, restaurants and hotels with constant foot traffic, these viruses can spread very quickly. Norovirus in particular survives well on surfaces and only a small dose is needed to make someone ill.

Mold in hot, humid coastal air

Chonburi is hot and humid almost all year, especially in coastal districts such as Si Racha, Bang Lamung and Sattahip. Once gypsum walls, ceilings, carpets, curtains, mattresses and plywood furniture have been wet, mold grows quickly. The WHO and CDC advise cleaning and drying within 24 to 48 hours, because after that mold usually becomes visible. Spores from molds such as Aspergillus and Penicillium can trigger allergies, asthma, coughing, sneezing, itchy eyes and skin rashes.

Musty and sewage odors in air-conditioned rooms

Many Chonburi buildings are closed, air-conditioned spaces: condos, hotel rooms and offices. When musty and sewage odors soak into carpets, curtains and walls, the smell circulates in the room because air does not move out. It is also a sign that microbes are still active, not just a cosmetic problem.

Groups who need extra care

• Young children, who crawl and put their hands in their mouths
• Older adults, whose immunity is lower and who recover more slowly
• Pregnant women, who should avoid wading and heavy cleaning
• People with diabetes, kidney disease, lung disease, asthma or allergies
• Workers who must wade to work every day, and volunteers moving belongings

The Impact on Life and Business in Chonburi if Germs Stay Behind

Health: Family members fall ill again and again, allergies flare and children get diarrhoea, forcing parents to take leave, which directly hits the income of daily and shift workers.

Money: Damaged mattresses, sofas, carpets and curtains must be replaced. Rental rooms and hotel rooms that smell stay closed for longer, which means lost income.

Time: Repainting or laying new flooring before the structure is dry brings mold back within weeks, and the work has to be torn out and done again.

Reputation: In tourist towns like Pattaya and Bang Saen, guests can post a review about a musty room within minutes. Dormitories that smell struggle to find new tenants.

Family: Worry about sick children, exhaustion from working while repairing the house, and the feeling that home is no longer safe build into chronic stress.

Why Ordinary Mopping Is Not Enough for Chonburi Homes and Buildings

• Scented floor cleaner makes the floor look clean and masks odor for a while, but it is not designed to kill germs in mud or inside materials.
• Bleach disinfects hard surfaces but does not penetrate gypsum, plywood, carpets or curtains, does nothing about airborne spores, and must never be mixed with ammonia or other cleaners because toxic gas forms.
• Running the air conditioner to dry the room removes some moisture, but if the walls are still damp inside, the unit can circulate spores and odor around the room. Any unit that was exposed to floodwater should be checked by a technician before use.
• Air fresheners and perfume cover the smell for a few hours; the source remains.
• Repainting straight away lets mold keep growing under the paint, which soon bubbles and stains black.

The right principle is: remove mud, wash, disinfect surfaces, dry properly, and only then use ozone to deal with germs and odor in the air, corners and material surfaces that mopping cannot reach.

Ozone Disinfection in Chonburi by WHD: Principles and Process

World Health Disinfection (WHD) provides residential and building ozone disinfection for homes, condos, hotels, offices, factories, schools and hospitals. WHD is based in Bang Khae, Bangkok, and has no branch in Chonburi, but people in Chonburi can contact the team to plan a service. Travel and coverage are confirmed by phone or LINE before every appointment.

Ozone (O3) has strong oxidising power. Released into a closed space, the gas spreads through the whole room: the air, behind cabinets, under beds, inside open wardrobes and across carpets and curtains. It breaks down the cell structures of viruses, bacteria and mold and breaks apart odor-causing molecules, then reverts to oxygen (O2) without leaving chemical residue. According to the test results certified for the company by Thailand's Department of Medical Sciences and Intertek (UK), it eliminates viruses, bacteria and mold by 99.99%. See the certificates page for details.

How the work is done

1. Consultation and assessment: send photos and the size of the space on LINE or by phone. The team defines zones and explains how to prepare.
2. Confirming the space is ready: mud removed, washed and dried, with flooded items that cannot be saved already taken out.
3. Clearing people, pets and plants from the area entirely, and closing doors and windows.
4. Ozone release and contact time: a typical cycle is about 30 minutes per zone.
5. Rest and ventilation: the ozone reverts to oxygen, the space is aired out, and people re-enter only when the team says so.

Safety comes first: ozone is used only in a closed, empty space with no people, pets or plants inside. Nobody enters during treatment or before the rest and ventilation period ends. Ozone does not replace washing, drying or medical care. Anyone with fever, calf pain, diarrhoea or breathing difficulty after wading should see a doctor immediately.

10 Reasons Chonburi Homes, Dorms and Hotels Should Plan Ozone Treatment After the Water Recedes

1. It suits closed, air-conditioned rooms such as condos and hotel rooms, where odor tends to linger.
2. It treats both air and surfaces, reaching corners that cloths cannot.
3. It covers bacteria, viruses and mold in a single process. See the ozone service
4. It leaves no residue, because ozone reverts to oxygen, which suits rooms used by children and older adults.
5. It reduces musty odor at its source, helping rental and guest rooms get ready for new occupants.
6. It can be done zone by zone, so a dorm or hotel can work floor by floor or room group by room group and keep operating.
7. The cycle is short, about 30 minutes per zone plus rest and ventilation.
8. It is backed by test results certified for the company by the Department of Medical Sciences and Intertek.
9. It works for many building types, from townhouses and detached homes to offices and factories. Consult the team
10. There is a special promotion: a free medical-grade disinfectant spray for ozone jobs of 15,000 baht or more, which suits multi-room or whole-building work. Ask for details

Example case (a simulated scenario to explain the process, not a real customer review)

A Small Guesthouse in Bang Lamung: Getting Ready to Welcome Guests Again

Wichai owns a twenty-room guesthouse in Bang Lamung district. Water entered six ground-floor rooms, the lobby and the linen store. While the water was high, he closed the ground floor, moved guests upstairs, cut power to the flooded zone and lifted dry sheets and towels to higher shelves.

When the water receded, the housekeeping team removed the mud, washed the floors and walls, threw out all the carpets, opened up soaked sections of ceiling and had a technician check the wiring and air conditioners. The six rooms were left with windows open and fans running for several days until the walls were dry. Flooded linen was sent for hot washing. Yet when the rooms were closed up and the air conditioning tested, the musty smell came back.

Wichai contacted WHD on LINE, sending a ground-floor plan and photos. The team confirmed travel to Chonburi and an appointment date, then divided the area into zones: guest rooms two at a time, the lobby and the linen store. Each zone was treated for about 30 minutes, then rested and ventilated before staff were allowed back in. Guests upstairs did not need to move out, because the team clearly sealed off the zone being treated and staff stayed out until told it was safe.

In situations like this, owners usually notice a clear drop in the musty smell in closed, air-conditioned rooms and feel more confident about selling those rooms again. The team advised running the air conditioning and ventilating regularly, and checking the walls for any new damp patches over the following weeks.

Chonburi Flood Recovery Checklist by Type of Home

Housing estates and townhouses (e.g. Mueang, Ban Bueng, Phan Thong)

• Cut power and have an electrician inspect before use; check every ground-floor socket that was submerged.
• Clear mud from the carport, kitchen and the drain in front of the house.
• Cut out soaked gypsum walls and ceilings up to the flood line so the inside can dry.
• Throw out flooded mattresses, fabric sofas and carpets.

Worker dormitories and rental rooms (e.g. Si Racha, Mueang)

• Owners should plan by floor, not room by room, because hallways and neighbouring rooms are connected.
• Tenants should lift belongings off the floor and throw out food that touched floodwater.
• Clean shared bathrooms and laundry areas thoroughly, as they spread viruses.

Condos, hotels and guesthouses (e.g. Bang Lamung, Sattahip)

• Have air conditioners that were flooded or sat in damp rooms checked and cleaned by a technician.
• Hot-wash sheets, towels and curtains; discard soaked carpets.
• Keep guests out of zones under restoration until washing, drying and ozone are complete.

Orchard homes and wooden houses in rural districts (e.g. Phanat Nikhom, Nong Yai, Ko Chan, Bo Thong)

• Watch for snakes and other venomous animals under raised houses and in woodpiles.
• Wash animal pens and areas around the house mixed with animal waste, which raises the risk of animal-borne disease.
• Let wooden floors and walls dry completely before oiling or painting.

All types: before and after ozone

• Before: washing and drying done, people, pets and plants out, cupboards and drawers open.
• After: wait until the rest and ventilation period ends, open windows regularly and control humidity.
• Watch everyone's health for at least two weeks after wading; see a doctor for fever or calf pain.

Frequently Asked Questions About Ozone Disinfection in Chonburi

1. The water is still rising. Should I contact you about ozone now?

Focus on safety for now, but you can contact the team and plan ahead. Once the water recedes and the space has been cleared of mud, washed and dried, you can book a date straight away.

2. Does WHD have a branch in Chonburi?

No. WHD is based in Bang Khae, Bangkok. People in any Chonburi district can call 065-556-6294 or LINE @whd268. The team will confirm travel, coverage and an appointment date, but cannot guarantee same-day arrival.

3. Can a condo or hotel be treated while people stay on other floors?

Yes, when the treated area is a closed zone with no people, pets or plants inside, and access is blocked until the rest and ventilation period ends. Details are assessed with the team case by case.

4. Can ozone replace cleaning?

No. Mud removal, washing and drying must always come first. Ozone is the finishing step that deals with germs and odor where washing cannot reach.

5. How long does it take?

A typical cycle is about 30 minutes per zone, not including preparation and the rest and ventilation period. Large buildings are split into several zones.

6. Should the air conditioner be off during treatment?

The team will advise on equipment settings before starting. Most importantly, any air conditioner exposed to floodwater should be checked by a technician first and not used until it has been inspected.

7. Someone at home has a fever after wading. What should we do?

See a doctor immediately and mention the flood exposure. Read more from the Department of Disease Control and the CDC.

Start Planning Your Chonburi Home and Building Recovery Today

Talk to the WHD team about ozone treatment for homes, dorms, condos, hotels or offices in Mueang Chonburi, Si Racha, Bang Lamung, Sattahip and other districts.

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

Promotion: free medical-grade disinfectant spray with any ozone job of 15,000 baht or more.

Related Links

• Residential and building ozone disinfection
• Disinfection service
• Reducing chemical residue with ozone
• Certificates
• Contact us

References

• Bangkokbiznews, DDPM flood situation report: bangkokbiznews.com
• Thai PBS: thaipbs.or.th
• World Health Organization fact sheets: who.int
• CDC flood guidance: cdc.gov/floods
• Thailand Department of Disease Control: ddc.moph.go.th