What Happened at Ongkharak Old Market: The Reported Case

According to a report by News1live (news1live.com), the old canal-side market in Ongkharak district, Nakhon Nayok province, was flooded continuously for eight days, from 25 September 2026 at 20:00 to 2 October 2026, the date of the report.

The report described several conditions on the ground:

• Water roughly knee-deep at the shopfronts, and deeper along the canal.
• Toilets could not be used, leaving people who stayed in the area struggling with the most basic part of daily life.
• Older people and children had difficulty accessing help.
• Sandbag lines could not hold back the water.

The short phrase "toilets could not be used" sounds ordinary, but from a public health point of view it is a serious warning sign. When toilets and drainage fail for days, sewage is likely to mix into the standing water around the market, the same water people keep wading through every day to check their shops, move stock and collect relief supplies.

Eight days is also a long time for timber buildings and old shophouses. Wood that sits in water for that long absorbs moisture deep inside. Old plaster walls wick dampness well above the waterline. Shelving, glass display cabinets and counters stand in dirty water, and any stock that could not be lifted in time is lost.

Note: these details are as reported on 2 October 2026. Flood conditions change daily. Follow announcements from Nakhon Nayok province, Ongkharak district and the DDPM. Source: News1live.

Why a Flooded Canal-Side Market Carries a Higher Germ Risk Than a Typical Home

A market concentrates every risk factor in one place: food, crowds, shared surfaces, and drainage that is already under pressure on a normal day. When floodwater stands for days, those risks multiply.

• Spoiled food and ingredients. Fresh produce stalls, curry-and-rice shops, dessert vendors and grocers all have food that was submerged or spoiled when power failed, feeding bacteria, flies and rats.
• Failed sanitation. With toilets out of action and drains pushed backwards, sewage mixes into the water around the market.
• Market drains and gutters, which normally collect food scraps and grease, are stirred up and spread across the whole area.
• Displaced rats. Markets already host rats. When water rises, they climb into buildings, spreading urine and droppings across shelves and surfaces.
• Old buildings dry slowly, giving mould a long window to grow.

And a market is where customers come straight back as soon as shops reopen. If food-contact surfaces, counters, scales and utensils have not been cleaned and disinfected properly, the risk does not stop with the shop owner. It passes to customers and their families.

Example Case: A Curry-and-Rice Shop in a Wooden Shophouse After the Water Drops

(This is an illustrative scenario built from problems commonly seen in markets and shops after floods. It does not describe any real shop or person in the news report.)

Imagine a small curry-and-rice shop in a two-storey wooden shophouse that has traded in the old canal-side market for years. Downstairs is the shop: a glass food cabinet, stainless tables, a gas stove and a chest freezer. Upstairs live the middle-aged owner, her elderly mother and a young grandchild. When water starts entering the market at night, the owner carries pots and some stock upstairs and stacks sandbags at the front, but the water still rises to knee height.

For days the downstairs toilet is unusable and the family makes do with bags and buckets. The elderly mother cannot manage the stairs and stays upstairs; the grandchild misses school. When the water finally recedes, mud coats the floor and table legs, the freezer reeks of rotten ingredients, the lower wooden wall panels show white mould and black spots, there are rat droppings on shelves the water never reached, and drain smells rise from the gutter outside.

The owner's biggest worry is not just the damage. It is the question: "When can I sell food again, and how can I be sure customers won't get sick?" The answer is a systematic plan: discard what must go, wash what can be saved, properly disinfect food-contact surfaces, and dry the building before opening for real. The steps follow below.

Germs After the Ongkharak Market Flood, and Who Needs Protecting

Gut bacteria: E. coli and Salmonella

When toilets and drains fail, faecal bacteria such as E. coli and Salmonella end up in standing water and mud. In a food shop they can contaminate chopping boards, knives, trays, food cabinets and counters. If these are reused without proper washing and disinfection, the result can be food poisoning, diarrhoea, vomiting, stomach pain and fever, for the family and for customers.

Leptospirosis

A market with a large rat population is an obvious leptospirosis risk. The bacteria are shed in rat urine, survive in standing water and mud, and enter through cuts or skin softened by long immersion. Shop owners, staff and volunteers who wade through water to move stock and clean are directly exposed. The Department of Disease Control advises boots and rubber gloves, and anyone with high fever, headache or calf pain after wading should see a doctor promptly.

Viruses spread by hands and surfaces

Norovirus and rotavirus spread through contaminated food, water, hands and surfaces, causing severe diarrhoea and vomiting; they are a particular concern wherever food is sold. Influenza and RSV spread easily once crowds return to the market, while hand, foot and mouth disease is common in young children who come shopping with their parents and touch everything.

Mould in wooden shophouses and old walls

The CDC advises cleaning and drying within 24 to 48 hours after floodwater recedes to limit mould, but a market flooded for eight days is well past that point. Timber, ceilings and old walls hold moisture, and mould on shelves and walls can contaminate stock and release spores that trigger allergies and asthma.

At-risk groups in the old market neighbourhood

• Older people living above the shops, who the report said had difficulty accessing help
• Children in the flooded area who may touch standing water without understanding the danger
• Shop owners and staff wading and cleaning for days
• People with chronic illness and pregnant women
• Customers who will buy food once the market reopens

A disinfectant only reduces risk on surfaces; it is not medical treatment. For fever, calf pain, severe diarrhoea or persistent vomiting, go to a hospital or health centre promptly.

When the Toilets Are Down: Sanitation During a Long Market Flood

The detail in the News1live report that toilets could not be used deserves its own section, because it shapes the germ load the market will face when the water finally drops. For eight days, people who stayed in the area had to manage without a working toilet. In that situation, simple habits make a real difference, both during the flood and in the clean-up that follows.

• Use sealed bags or lidded buckets for human waste rather than letting it go into the floodwater, and keep them away from any food or drinking water.
• Keep a hand-washing point upstairs: a container of clean water with a tap or scoop, soap and a basin. Wash hands after using the toilet substitute and before handling food.
• Store drinking water and food high and covered, well away from waste containers.
• Ask local authorities or volunteers about mobile toilets or waste collection, and make sure older neighbours who cannot leave upstairs rooms are included.
• Plan the toilet first when recovery starts. Once pipes and the septic tank are checked, the toilet and hand basin should be the first rooms washed and disinfected, because every other cleaning task depends on people being able to wash their hands.

These steps do not replace professional sanitation or medical advice, but they reduce the amount of contamination that ends up in the shop and on the surfaces that will later need disinfecting.

Why Soap or Bleach Alone Falls Short for Market Shops

Scrubbing with detergent and clean water always comes first, because it removes mud, grease and food debris that shelter germs. But for market shops, especially food businesses, stopping at washing or relying on strong bleach alone has limits:

• Cleaning is not disinfecting. Soap and detergent wash away some germs but are not designed to disinfect to healthcare standards.
• Most shop equipment is metal. Stainless tables, scales, freezers, steel shelving and roller shutters can stain and rust when bleach is used strong or often, shortening their life.
• Chlorine smells cling to food and packaging. A sharp smell in a food shop puts customers off and irritates elderly relatives living upstairs.
• Mixing risks. Shops keep several cleaners. Mixing bleach with ammonia-based or acidic products can release toxic gas.
• No protection once dry, just as customers and deliveries start flowing back in.

The right approach for markets and shops is to remove all mud and grease first, then apply a product designed specifically for disinfection: broad spectrum, non-corrosive to metal equipment, low odour, and safe when used according to the label.

The Solution for Markets and Shops: CHEMGENE HLD4H Medical-Grade Disinfectant

CHEMGENE HLD4H is a medical-grade high-level disinfectant made in England and distributed by World Health Disinfection (WHD). According to the product information, it offers:

• Broad coverage against bacteria, fungi, mycobacteria, Salmonella and viruses including influenza H1N1, RSV, norovirus, hand, foot and mouth virus and SARS-CoV-2.
• Fast action: the product page states it kills within 1 minute and is 99.85% effective against COVID-19.
• Residual surface protection for up to 14 days, per the product page.
• Flexible dilution: 1:30, 1:50, 1:60, 1:100 and up to 1:200, for everything from market floors to small surfaces.
• Non-corrosive to stainless steel, aluminium, rubber, plastic and fibreglass, protecting tables, freezers, trays and shop fittings.
• Biodegradable, and described as safe for people, pets and medical equipment when used as directed.
• Testing and approvals listed in the product information: Mahidol University, NHS England, ISO 9001:2015, ISO 13485, SGS, Intertek, CE and EN 13727 / EN 14348 / EN 13624 / EN 14476.
• Used in hospitals, clinics, laboratories, schools, offices, airports, homes and elderly and child care settings.

For shophouses where the ground floor is a business and the upper floor is home to older relatives and children, a low-odour, non-corrosive disinfectant lets trade and family life restart together, without enduring harsh chemical smells or losing more metal equipment.

Restoring a Shophouse in Ongkharak Old Market Before Reopening

1. Safety and documentation

Switch off the main breaker. Do not use sockets, electric cookers or freezers that were submerged until an electrician has checked them. Check gas cylinders and hoses for leaks. Wear boots, rubber gloves, a mask and eye protection. Photograph damage to the shop and stock from every angle for relief or insurance claims.

2. Discard contaminated food, ingredients and stock

Throw away all food, ingredients, condiments and stock in sachets, cardboard or containers that are not fully sealed if they touched floodwater, along with food from freezers that lost power for a long time. Paper, cardboard boxes, sponges, cloths and wooden chopping boards that soaked for days should also go, because contamination penetrates deep into porous materials. Metal, glass and hard plastic items can be washed, disinfected and reused.

3. Remove mud and wash top to bottom, inside to outside

Shovel mud while it is still wet. Hose walls from the top down. Scrub floors, counters, table legs and shelving with detergent or degreaser, paying special attention to the gutter in front of the shop, roller-shutter tracks and corners where mud and food scraps collect. Rinse with clean water until no mud or grease remains.

4. Disinfect with Chemgene HLD4H per the label

Read the label and choose a dilution suited to the task from the range in the product information (1:30 to 1:200). If you are unsure which dilution suits food-contact surfaces or heavily contaminated areas, ask the WHD team. Mix with clean water in a graduated container and never with other chemicals. Spray or wipe cleaned surfaces until evenly wet and leave for the full contact time on the label. For surfaces that touch food directly, follow the label's instructions on rinsing with clean water after disinfection.

5. Spots you must not miss in a market shop

• Counters, food preparation tables, trays and glass food cabinets
• Inside and outside freezers and fridges (after emptying and washing)
• Scales, cash drawers and payment points
• Toilets, hand basins and taps, which the report said were unusable during the flood
• Roller shutters, handles and the stair rail to the upper floor
• Shelves with rat droppings (wear gloves, pick droppings up with damp paper rather than sweeping dry, then wash and disinfect)
• Shared market walkways and drainage channels

6. Dry and check for mould before opening

Open shutters and windows for airflow, run fans and dehumidifiers, and inspect wooden walls and shelving for mould. If you find any, wash and disinfect again. Replace badly rotted timber, and do not paint over damp walls.

7. After reopening: disinfect high-touch points on a schedule

For the first two to three weeks of trading, re-disinfect surfaces that customers and staff touch often at sensible intervals following the label. Cook only with water you trust, and wash hands before handling food.

10 Reasons Ongkharak Market Traders Choose Chemgene HLD4H

1. A high-level, medical-grade disinfectant used in hospitals and clinics, per the product information.
2. Covers food-borne pathogens such as Salmonella and norovirus, vital for food businesses. Details on the Chemgene product page.
3. Tackles mould on shelving and walls in shophouses flooded for days.
4. Fast acting, within 1 minute per the product information, helping shops reopen sooner.
5. Up to 14 days of residual protection per the product information, as customers start returning.
6. Non-corrosive to stainless steel and aluminium, protecting tables, freezers, trays and shutters.
7. Low odour, so it does not bother customers or elderly relatives upstairs.
8. Economical across a whole market, with dilutions up to 1:200 depending on the job.
9. Biodegradable, appropriate for a canal-side neighbourhood.
10. Certification customers can trust. See the Chemgene information page, and for a whole market, ask about WHD's disinfection service.

Before and After: A Market Shop Restored the Right Way

Checklist for Safely Reopening Ongkharak Old Market

For shop owners

• Cut power, check gas, and have an electrician inspect before use.
• Discard contaminated food, ingredients and porous materials.
• Shovel mud, scrub with detergent and rinse with clean water.
• Disinfect with Chemgene HLD4H at the label dilution and contact time.
• Prioritise food-contact surfaces, freezers, toilets, basins and payment points.
• Dry fully and check for mould before trading.

For the community and market managers

• Check on older residents and children living above shops: water, food and medicines.
• Restore shared toilets first and disinfect them regularly.
• Clean market drains and shared walkways.
• Coordinate rat control across the whole market.
• Contact health authorities if several people develop diarrhoea or fever.

For customers

• Wash hands before eating and choose food that is freshly cooked and hot.
• Notice shop hygiene and support traders who restore properly.

FAQ for Shops After the Nakhon Nayok Flood

1. Can I use Chemgene HLD4H on food preparation tables?

It can be used on cleaned surfaces at the label dilution. For surfaces that touch food directly, follow the label's rinsing instructions strictly, and ask the WHD team if unsure.

2. Do I really need to wash off the mud first?

Yes, always. Mud, grease and food debris shield germs and reduce the effectiveness of every disinfectant. Chemgene is the finishing step after washing.

3. How should I deal with a toilet that was out of use for days?

Have the pipes and septic tank checked first. Then wash the bowl, floor, walls and basin with detergent, disinfect with Chemgene per the label, leave it for the contact time, and ventilate.

4. Can elderly relatives stay upstairs while I clean downstairs?

The product information states it is safe for people when used as directed, but keep elders and children away from the work area while shovelling and spraying, close the door between floors if possible, and ventilate the ground floor well.

5. How often should I re-disinfect after reopening?

Although the product information mentions residual protection of up to 14 days, frequently wiped or washed areas such as counters, scales, toilets and handles should be treated more often, following the label.

6. I waded through the market for days and now have a fever and calf pain. What should I do?

See a doctor promptly and mention your flood exposure, as this may be leptospirosis, which needs medical treatment. A disinfectant is not medicine.

Reopen Your Ongkharak Market Shop with Confidence

Clear the mud first, then finish with a medical-grade disinfectant that will not corrode your shop equipment. The WHD team can advise on method and dilution.

Order Chemgene HLD4H for Your Shop

Call 065-556-6294  |  LINE: @whd268  |  Email worldhealthdisinfection@gmail.com

WHD is based in Bangkok. Please confirm delivery and service options for Nakhon Nayok by phone or LINE.

Related Links and References

• CHEMGENE HLD4H disinfectant
• About Chemgene
• Disinfection service for markets and commercial buildings
• Case source: News1live: Ongkharak canal-side old market flooded for 8 days
• World Health Organization
• CDC: Floods
• Department of Disease Control, Thailand