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

Tai, a Factory Safety Officer in Ban Bueng, and Her After-the-Flood List

Tai is the occupational safety officer at a mid-sized parts factory in Ban Bueng district. About three hundred employees work two shifts; most live in villages and rented rooms around the plant, and some commute from Phan Thong and Nong Yai. In late September, heavy rain fell for days. Water crept into the car park, then into the canteen on the ground floor at the back of the building, the locker rooms and the staff toilets. Management stopped some production lines and let employees whose homes flooded take leave.

With water still rising in many districts, Tai could only reach part of the plant. In the canteen, water stood above ankle height around a dozen long stainless-steel tables. The welfare shop's fridges had died when the power was cut, and a musty smell mixed with spoiled food drifted from the ingredient store. The locker room, with its long rows of steel lockers, was full of damp shoes and work uniforms.

Tai knew management's first question would be: when can the lines restart? Her own question was different. If three hundred people come back to eat in the same canteen, use the same toilets and open lockers that have started to grow mold, what happens? A diarrhoea cluster? Allergy sufferers coughing all shift? And if many people fall ill together, the lines stop again. So she started writing a recovery plan before the water had even dropped, in three phases: while the water is high, during mud removal, and disinfection before reopening.

Tai's situation reflects what is happening all over Chonburi, from roadside restaurants in Bang Lamung and fresh markets in Mueang to schools in Phanat Nikhom and temple halls in Bo Thong and Ko Chan. Everyone is waiting for the water to fall, and everyone will face the same question: how do we reopen safely?

Flooded Areas in Chonburi: 10 Districts and Latest Status

Based on the DDPM report of 2 October 2026. Figures and conditions can change daily; follow announcements from the province, district offices and DDPM. The report gives the provincial water level as rising.

The provincial total in the same report was 118,723 households. Nationally, DDPM reported on 2 October 2026 that flooding affected 31 provinces plus Bangkok, 1,245,581 households and 3,535,206 people, caused by heavy to very heavy rain and runoff from the north.

The right-hand column does not mean every such place flooded. It lists the types of shared places common in each district that belong in a post-flood inspection plan.

While the Water in Chonburi Is Still Rising: Do's and Don'ts

Rising water is not the time to spray, because the next surge brings contamination straight back. What you can do now is prepare, so recovery is faster and safer once the water drops.

• Safety first. Follow provincial and DDPM guidance, cut power where water may reach, avoid wading unless necessary, and wear boots and protect any cuts if you must.
• Move things up. Lift or relocate documents, stock, food ingredients and electronics.
• Photograph and note where water entered and its highest level, for damage assessment and to tell technicians how high to focus.
• Stock cleaning gear: rubber gloves, boots, masks, goggles, brooms, shovels, bin bags and detergent.
• Plan ahead. Factories, schools and large markets can send floor area and building layouts now so booking is faster once the water recedes.
• Don't pour disinfectant or bleach into standing floodwater; it does not work and exposes people to chemicals.

The Many Germs Chonburi Floods Bring, and Where They Hide

Chonburi has dense towns, drainage systems, treatment ponds, fresh markets and farmland. When heavy rain overloads drains and water flows through these areas, it carries several germ groups into buildings. After the water drops, they stay in mud, surface films and moisture trapped in materials.

Bacteria

• E. coli and other faecal bacteria from overflowing drains and septic tanks, common on toilet floors, canteen floors and drains; they cause diarrhoea, cramps and vomiting.
• Salmonella in kitchens, ingredient stores and fridges that lost power for days, a key risk for factory canteens, restaurants and market food stalls.
• Leptospira, the cause of leptospirosis ("rat urine disease"), in water and mud contaminated by rat urine; it enters through cuts and mucous membranes. Warehouses, car parks and markets with rats need extra care during mud clearance.

Viruses

• Norovirus and rotavirus cause diarrhoea and vomiting and spread easily via hands, handles, tables and food, ideal conditions in a canteen where hundreds eat at once.
• Influenza and RSV spread well in humid air and crowded places such as temporary shelters, staff buses and classrooms.
• Hand, foot and mouth virus affects young children through toys, desks and floor play areas, so childcare centres and kindergartens should be disinfected before reopening.

Mold and Musty Odour

The hot, humid eastern climate lets mold grow fast after a flood, especially on gypsum walls, ceiling boards, wooden cabinets, carpets, cushions, curtains, uniforms left in lockers and cardboard in warehouses. WHO and CDC advise cleaning and drying within 24 to 48 hours to limit mold, which is hard to achieve in large buildings. Spores trigger allergies and asthma, and musty, sewage-like odour signals that mold and bacteria are still active. Masking the smell is not a fix.

Who Is at Risk

Young children, older adults, pregnant women, people with chronic illness and anyone with weak immunity should stay away from mud clearance and untreated areas. In factories, staff with cuts on hands or feet should not be assigned to mud removal. If you get fever, muscle pain especially in the calves, red eyes, yellowing skin or severe diarrhoea after flood contact, see a doctor immediately and mention the exposure. Spraying cares for buildings; it is not medical treatment.

The Cost to Chonburi Businesses and Communities of Reopening Before Disinfection

Health at scale. In a province with a large factory workforce, a diarrhoea outbreak in one canteen can make dozens of people sick at once, and the illness then spreads into their families.

Production and income. For factories, stopping a line because staff fall ill after the flood is a second loss. For restaurants and lodging in Bang Lamung or Si Racha, just a few guests who notice a musty smell or get sick can lead to reviews that hurt income for months.

Property and time. Untreated mold spreads into materials, forcing ceilings and gypsum walls to be torn out and more stock to be discarded, and keeping spaces closed longer.

Trust. Employees, parents, customers and villagers return with confidence when they know cleaning and disinfection were done systematically, so telling them clearly matters as much as doing it.

Why Ordinary Cleaning Isn't Enough for Large Buildings

• Pressure washing alone shifts mud well, but splash can carry germs onto walls and equipment, and it does not kill them.
• Bleach at a guessed dilution can be too strong, corroding stainless steel and irritating workers, or too weak to work, and it needs the right contact time.
• Wiping point by point in a canteen with dozens of tables, hundreds of lockers or a market with dozens of stalls leaves many gaps.
• Running air-conditioning or fans before the system is cleaned can spread mold spores through the building.
• Perfume or odour blocks hide the smell for a while; the cause remains.
• Painting or wallpapering over a damp wall hides mold that later breaks through.

Disinfection Spraying in Chonburi by Area Type: Industry, Tourism and Farming Communities

Chonburi has many faces. Each district has different shared places, so we split the approach into three groups.

Group 1: Factories and Workplaces in Si Racha, Phan Thong, Ban Bueng and Mueang Chonburi

These districts host many factories and industrial estates. After the water drops, focus on canteens and kitchens, ingredient stores, locker and changing rooms, staff toilets, first-aid rooms, meeting rooms, stair rails, badge or scan entry gates and staff shuttle buses. ULV mist suits tightly packed locker rooms because it reaches gaps between and on top of lockers. For production areas with machinery or special requirements, tell the team in advance so you can agree what will be sprayed and how equipment should be covered.

Group 2: Tourism and Coastal Towns in Bang Lamung, Sattahip and Si Racha

Bang Lamung, which includes Pattaya, is a national tourism hub, while Sattahip and Si Racha have coastal communities, restaurants and lodging. Focus on lobbies, dining rooms, kitchens, guest toilets, corridors, lifts and ground-floor rooms that took water. Spraying before full reopening lets you welcome guests back with confidence and tell them the premises were treated.

Group 3: Farming Communities and Small Towns in Phanat Nikhom, Nong Yai, Ko Chan and Bo Thong

Community life here centres on temples, schools, local markets and local government. Temple halls and community halls often serve as temporary shelters and distribution points during floods, then must host merit-making and activities for older people again. Schools and childcare centres must get classrooms ready, and community markets must clean stalls and drains. Focus on floors, mats, cushions, toilets, kitchens, desks, toys and food stalls.

Public Service Offices in Every District

District offices, municipal offices, sub-district administrations and aid desks will be busy after the water drops. Counters, waiting chairs and toilets should be sprayed periodically while crowds are heavy.

WHD Disinfection Spraying for Chonburi: Disinfectant, Method and Steps

World Health Disinfection (WHD) is based in Bang Khae, Bangkok, with no branch in Chonburi. Customers in all 10 districts can call 065-556-6294 or LINE @whd268 with the location, building type and area. The team will confirm travel, timing and scope. Same-day arrival is not guaranteed, and while water is still rising, scheduling also depends on road conditions and site safety.

What Is CHEMGENE HLD4H?

According to the service information, trained technicians use CHEMGENE HLD4H, a medical-grade disinfectant from the United Kingdom 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, with a claimed 99.99% efficacy, and lists approvals or endorsements from Thailand's Department of Medical Sciences, Mahidol University, NHS England and EN 14476:2013+A2:2019. The customer list on the page includes hospitals, schools, malls, airports, offices, airlines, banks and residential buildings.

How Spray and ULV Work Together

ULV (Ultra Low Volume) fogging turns the disinfectant into a very fine mist that fills the room volume and settles on horizontal and vertical surfaces, including under tables, between lockers, on high shelves and in corners that hand wiping in a large building cannot reliably reach. Direct spraying targets heavily contaminated spots such as toilet floors, kitchen drain channels, moldy walls and bins.

Both work best on surfaces that are already free of mud. Quaternary ammonium disinfectants need direct contact; a coat of mud or grease protects the germs beneath and soil reduces the disinfectant's effect. So mud comes out, surfaces are washed with detergent and allowed to dry reasonably, and only then is spraying done.

Steps per the Service Information

1. Book by phone or LINE with location, building type, floor area and photos.
2. Prepare: finish mud removal, store food, dishes and personal items, cover or flag equipment that should not be sprayed, and clear people out.
3. Technicians spray with spray and/or ULV as planned; nobody else stays in the treated zone.
4. Wait about 30 minutes and re-enter at the time the technicians give.
5. Resume normal use, ventilate, and rinse food-contact surfaces with clean water.

Promotion per the service information: a free CHEMGENE spray bottle and WELLGIENIC wet tissues with the service, and a tax invoice is available for factories, companies, schools and agencies.

10 Reasons Chonburi Factories, Markets and Schools Should Spray After the Water Falls

1. Handles big spaces such as canteens, locker rooms and warehouses faster than wiping by hand.
2. Covers several germ groups: bacteria, viruses and fungi, per the disinfection spraying service.
3. Mist reaches high and narrow spots like locker tops, stock shelves and under long tables.
4. Reduces outbreak risk at work, protecting staff and production continuity.
5. Suits schools and childcare centres, covering hand, foot and mouth virus and RSV per the service information.
6. Medical-grade disinfectant, CHEMGENE HLD4H, with EN 14476 cited on the service page.
7. Trained technicians follow a set procedure and avoid chemical misuse.
8. Back in use after about 30 minutes, at the time technicians advise, shortening closure.
9. Can be paired with ozone for closed rooms that still smell; see ozone disinfection.
10. Tax invoice and advance planning: send details via the service page or LINE @whd268 now.

Before and After: A Chonburi Factory Canteen

Example Case: A Community Market in Phanat Nikhom

Example case to show how the work goes, not a review from a real customer.

Auntie Sri chairs the vendors' group at a small community market in Phanat Nikhom district. It has about forty stalls selling vegetables, meat, sweets and ready-made curries, under a steel-frame roof on a concrete floor, with one shared toilet block at the back. When the water came, every stall closed, and the flood left mud, leaves and drain debris under the stalls.

While the water was still high, she called WHD on 065-556-6294 to describe the market and sent photos via LINE. The team advised waiting until the water fell and mud was cleared before booking, since spraying while water might return is not worthwhile, and sent her a list for organising stall cleaning.

Once the level dropped, the vendors shovelled mud, washed the floor with water and detergent, scrubbed wooden and steel stalls and left the market open to the breeze for a day. On the booked day, technicians sprayed the drain channels, the toilet block and the bin area, then ULV-fogged the whole market, including under stalls and the lower roof frame, while everyone waited outside.

After about 30 minutes and re-entering at the time given, vendors rinsed food-display surfaces with clean water before trading. The group kept the CHEMGENE spray bottle at the cashier table and WELLGIENIC tissues in the toilets, with a tax invoice for the group's expense report. Auntie Sri put up a sign saying the market had been cleaned and disinfected, and regulars said it put their minds at ease.

Chonburi Flood Recovery Checklist for Shared Places

While water is rising

• Follow provincial and DDPM notices, cut power to risky areas, move valuables up.
• Record peak water levels per room and send site details to the team in advance.

As water falls and mud is cleared

• Have an electrician check systems before power-up; wear protection and cover cuts.
• Discard food, ingredients and soaked materials such as mattresses, cushions and cardboard.
• Wash floors, walls and furniture with detergent and dry within 24 to 48 hours where possible.

Before spraying day

• Store food, dishes, medicines and personal items securely.
• Flag special rooms: first aid, childcare, machinery or server rooms.
• Arrange for staff, pupils and pets to leave during application.

After spraying

• Re-enter at the time technicians give and ventilate.
• Rinse food-contact surfaces with clean water.
• Tell staff, parents or customers what was done.
• Wash hands often; see a doctor for fever, calf pain, red eyes or diarrhoea.

FAQ: Flood Disinfection Spraying in Chonburi

1. Water is still rising. Should we book now?

Contact the team now for an assessment, but the actual spraying should happen after the water falls and mud is cleared. If the water returns, earlier spraying is wasted.

2. Does WHD have a branch in Chonburi, Pattaya or Si Racha?

No. WHD is based in Bang Khae, Bangkok. Service in Chonburi is confirmed by phone 065-556-6294 or LINE @whd268, including travel, timing and scope, and same-day arrival is not guaranteed.

3. Can you spray a factory with machinery?

Tell the team in advance about machinery, electronics or areas with special rules so you can agree what to spray and how to cover equipment. Canteens, toilets, locker rooms and offices are the best-suited areas.

4. How long must staff stay out?

Nobody may be in the zone during spraying. Return at the time the technicians give; per the service information this is usually after about 30 minutes.

5. Will mold never come back after spraying?

That cannot be guaranteed if moisture remains. Mold needs moisture, so fix the moisture source, clean visible mold and dry the area alongside spraying.

6. Is it suitable for restaurants and hotels?

Yes. Store food and dishes before spraying and rinse food-contact surfaces afterwards. Rooms and lobbies should be empty during application.

7. What if a closed room still smells strongly?

You can add ozone treatment in an empty, sealed room after cleaning and drying.

Start Your Chonburi Post-Flood Disinfection Plan Today

Factories, markets, schools, temples, restaurants or lodging in any of Chonburi's 10 districts: send your site details now and book spraying once the water falls.

View the Disinfection Service and Get a Quote

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

WHD is based in Bang Khae, Bangkok. Service in Chonburi is confirmed by phone or LINE, including travel and timing.

Related Services and Pages

• Disinfection Spraying Service
• CHEMGENE HLD4H Disinfectant
• Residential and Building Ozone Disinfection
• Certificates
• Contact Us

References

• Bangkokbiznews, DDPM flood situation 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