The Flood Situation in Ngio Rai and Nakhon Chai Si, According to News Reports

According to a Siam Rath report dated 5 October 2026, Nakhon Pathom provincial officials visited Ngio Rai subdistrict in Nakhon Chai Si district and handed out 150 relief bags to affected residents. The same report said that Nakhon Chai Si district had been declared a disaster zone covering 24 subdistricts and 108 villages. Vulnerable points were located along the Tha Chin River and the canal lines, including Nakhon Chai Si, Bang Krabao and Tha Tamnak subdistricts. Water was still standing in many subdistricts at the time, and the province had coordinated with the Royal Thai Navy to send water pumps to speed up drainage.

At the national level, the Department of Disaster Prevention and Mitigation reported, as of 06.00 on 7 October 2026 (published by the Government Public Relations Department), that floods were affecting 27 provinces plus Bangkok, covering 123 districts and 984 subdistricts, with 1,154,875 households and more than 3.1 million people affected. These figures change daily, so residents should follow the latest announcements from Nakhon Pathom province and local authorities.

What these facts tell us is simple. The water inside homes in Nakhon Chai Si was not clean rainwater. It had travelled through the river, canals, drains, septic tanks, animal pens, farm plots and roads before it reached the living room. When water stands for days, germs from all of those sources mix together and soak into wooden floors, plaster walls, particleboard cabinets, mattresses and curtains. Moving back in therefore needs a plan, not just a quick sweep of the mud.

Example Case: A Canal-Side Home in Ngio Rai Where the Water Stayed for a Week

Note: this is a typical scenario compiled from situations commonly seen after prolonged riverside and canal flooding. It is not a testimonial from any specific customer and does not describe any particular house in Ngio Rai.

Aunt Sri lives in a two-storey house, half concrete and half wood, not far from a canal in Ngio Rai. In late September the canal rose a little at a time. At first she assumed the water would reach the front yard and then fall back, as it usually does. This time it kept coming. It flowed into the kitchen and the downstairs bathroom, so she carried the fridge, the rice bin and the washing machine upstairs and lived on the second floor with her two primary-school grandchildren.

Every trip downstairs meant wading through water that grew cloudier and smellier each day, with leaves, rubbish and an oily film collecting on the stairs. When the relief bags arrived she felt some relief about food, but a bigger question stayed with her: once the water was gone, how would this house become safe for the children again?

When the floor finally reappeared, it was covered with several centimetres of dark brown mud. A tide line ran along the walls, the particleboard kitchen cabinet had swollen and smelled musty, and the bathroom smelled like a drain. Her son came back from his job in town to help shovel mud, scrub floors and throw out damaged belongings. After two rounds of washing, the musty smell remained, black spots appeared in the corners and under the cabinet, the older grandchild developed an itchy rash on the legs, and the son had a scrape on his foot from a sheet of corrugated metal. The family had to ask whether soap and water were enough, and what else to do before the children slept downstairs again. The answer starts with knowing which germs floods bring.

Flood Germs in Ngio Rai and Nakhon Chai Si: Know Them Before You Move Back In

Floodwater along the Tha Chin River and the canals of Nakhon Chai Si passes through communities, farms and several kinds of drainage before reaching a home. As it stands, it loses oxygen and starts to rot, and some germs survive well in mud and on damp surfaces. Below are eleven germs or germ groups worth knowing. This is general public-health information, not treatment advice. Anyone who feels unwell should see a doctor promptly.

1. Leptospira, the cause of leptospirosis

How the flood spreads it: rats and other animals shed Leptospira in urine, and floods wash it out of burrows along canals and under houses. Where it hides afterwards: puddles around the house, wet mud under raised floors, damp kitchen floors and storerooms where rats sheltered. Symptoms and risk: sudden high fever, headache, muscle pain especially in the calves, and red eyes; people who wade for long periods or have cuts on their feet are most at risk. Prevention: wear rubber boots and gloves, cover wounds with waterproof dressings, wash after wading, and see a doctor about any fever in the weeks after flood exposure.

2. E. coli (Escherichia coli) from sewage and overflowing septic tanks

How the flood spreads it: E. coli lives in human and animal intestines, and flooded toilets and septic tanks release it into the water. Where it hides: bathroom floors, drains, tile grout, table and bed legs, and kitchenware that went under. Symptoms and risk: diarrhoea, cramps and nausea, and some types cause bloody diarrhoea; young children, older adults and people with chronic illness face the greatest risk of dehydration. Prevention: discard food that touched floodwater, wash dishes with clean water, drink bottled or boiled water and wash hands with soap before eating.

3. Shigella, the bacteria behind dysentery

How the flood spreads it: Shigella passes through faecally contaminated water, food and hands, and handwashing drops when toilets and taps fail. Where it hides: door handles, taps, water scoops, stair rails and toys left on the floor. Symptoms and risk: frequent loose stools, sometimes with mucus or blood, straining and fever; children and older adults dehydrate quickly. Prevention: wash hands after every toilet visit, clean high-touch points daily during recovery, keep a sick person's towels separate and see a doctor for bloody diarrhoea.

4. Salmonella from poultry, pets and spoiled food

How the flood spreads it: many peri-urban homes keep chickens, ducks or other animals, and flooded pens release manure into the water. Where it hides: mud around animal pens, kitchen floors, chopping boards, fridges that lost power and dry food that got damp. Symptoms and risk: fever, stomach pain, diarrhoea and vomiting; young children, older adults, pregnant women and people with weak immunity are most vulnerable. Prevention: throw away flooded or warm-stored food, keep raw and cooked boards apart, and clean animal areas separately from the house.

5. Campylobacter from animal droppings

How the flood spreads it: this gut bacterium of poultry and animals rides floodwater from coops and fields into homes. Where it hides: water jars with loose lids, animal drinking bowls, yards and kitchen sinks. Symptoms and risk: diarrhoea, cramping and fever that can last several days. Prevention: do not use water from storage tanks the flood reached until they are cleaned, boil drinking water and rinse kitchenware with clean water before use.

6. Hepatitis A virus from contaminated water and food

How the flood spreads it: the virus spreads by the faecal-oral route, especially when sewage mixes with water supplies and food is prepared communally. Where it hides: water containers, vegetables rinsed in unsafe water and flooded kitchen surfaces. Symptoms and risk: tiredness, poor appetite, nausea, yellow skin and eyes and dark urine, usually weeks after exposure; adults tend to show stronger symptoms. Prevention: eat freshly cooked food, use clean water for washing produce, and ask a doctor about vaccination if you are at risk.

7. Rotavirus, a diarrhoea virus in young children

How the flood spreads it: rotavirus moves easily on hands, toys and surfaces when families crowd into small dry spaces. Where it hides: plastic toys, feeding bottles, children's bedding and floors where babies crawl. Symptoms and risk: vomiting, watery diarrhoea and fever; children under five are most at risk of dehydration. Prevention: wash toys and bottles in clean water, discard flooded soft toys, keep children drinking and seek care quickly if a child becomes drowsy or passes little urine.

8. Enteroviruses that cause hand, foot and mouth disease

How the flood spreads it: these viruses travel in saliva, nasal mucus and stool, and children from several homes often play together in the few dry spots. Where it hides: toys, stair rails, dining tables and play areas. Symptoms and risk: fever, mouth sores and blisters on hands, feet and buttocks, mainly in children under five. Prevention: wash children's hands often, keep personal items separate, clean shared toys and keep sick children home until a doctor advises otherwise.

9. Pseudomonas aeruginosa, a damp-loving bacterium

How the flood spreads it: it is common in soil and water and thrives in pipes, sponges and materials that stay wet. Where it hides: drains, basins, dish sponges, mops and carpets that have not dried. Symptoms and risk: wound infections, outer-ear infections and skin rashes after water contact; people with chronic wounds, diabetes or weak immunity should take extra care. Prevention: discard flooded sponges and mops, clean drains and basins, and see a doctor if a wound becomes red, swollen or pus-filled.

10. Dermatophytes and "water-rot" feet

How the flood spreads it: skin soaked for hours softens and cracks, letting fungi and bacteria in, a common problem for residents who wade daily to work or to collect aid. Where it hides: wet shoes, socks, doormats and bathroom floors. Symptoms and risk: itching between the toes, peeling, redness and stinging, with a risk of secondary infection from scratching. Prevention: wash and fully dry feet after wading, change socks often, dry shoes in the sun and see a doctor if the rash spreads.

11. Indoor molds: Aspergillus, Penicillium and Cladosporium

How the flood spreads it: floods mostly create the humidity that lets airborne spores grow within days. WHO and CDC advise cleaning and drying quickly, generally within 24 to 48 hours, which is hard to achieve when water stands for days. Where it hides: behind particleboard cabinets, above ceilings, inside gypsum walls, in mattresses, sofas and curtains. Symptoms and risk: stuffy nose, sneezing, coughing, eye irritation and asthma flare-ups, especially for people with allergies, asthma, older adults and infants. Prevention: ventilate, use fans to dry, discard heavily moldy porous items, wear a particle-filtering mask and never paint over mold.

Remember tetanus: cuts from nails, wood or metal sheets during cleanup carry a tetanus risk, because Clostridium tetani lives in soil and mud. Clean deep or dirty wounds and see a doctor to check whether you need a tetanus vaccination.

How Cleaning and Disinfection Spraying Reduce These Germs

All eleven groups share one feature: they ride on mud, grime and damp surfaces. The correct order is therefore to remove as much mud and dirt as possible, wash with clean water and detergent, and only then disinfect. WHO and CDC give the same advice for flood-contaminated surfaces: clean first, then disinfect, because a disinfectant cannot work properly through a layer of mud.

According to World Health Disinfection (WHD) service information, the spray uses CHEMGENE HLD4H, a medical-grade disinfectant from the United Kingdom containing Benzalkonium Chloride and Didecyldimethylammonium Chloride. The company's pages state that it covers viruses, bacteria and fungi, naming organisms such as RSV, influenza H1N1 and H5N1, norovirus, hand, foot and mouth virus, Salmonella and mold, with a claimed 99.99% efficacy.

For the germs in this guide that the product pages do not name, such as Leptospira, E. coli, Shigella, Campylobacter, hepatitis A, rotavirus, Pseudomonas and dermatophytes, we make no organism-specific claim. They belong to the bacteria, virus and fungi groups the product says it covers, and you can ask WHD for test data on any specific organism. Spraying never replaces medical care.

What Nakhon Chai Si Families Risk If They Skip Disinfection

• Health: repeated diarrhoea in the household, foot rashes that will not heal, infected wounds and allergy or asthma flare-ups from wall mold.
• Money: medical bills, replacing furniture that molds again, and repairing walls or ceilings weakened by trapped moisture.
• Time: washing the house again and again, taking leave for clinic visits and delaying the move back home.
• Family: older relatives and children staying with others for longer, and stress building in a family already worn out by the flood.
• Business: canal-side shops and food stalls that reopen too soon without thorough cleaning may lose customer trust.

Why Shovelling Mud and Washing a Ngio Rai Home Is Not Enough

Bleach alone is patchy. Poured on muddy floors or mixed at the wrong strength, it loses much of its effect and never reaches walls, table legs, door handles or the gap behind cabinets.

Fans and air fresheners mask the problem. Fans do speed up drying, but fresheners only cover the smell. The source is mold and bacteria still living in the materials.

Painting over mold hides it. Fresh paint on a damp, moldy wall lets growth continue underneath until black spots return within weeks.

Shared touch points are forgotten. Handles, switches, rails and dining tables are touched by everyone but washed less than floors, even though they pass stomach bugs around the family.

Exhaustion leaves gaps. After days of flooding most families are drained, and a trained team makes the disinfection step systematic.

WHD's Post-Flood Disinfection Spraying Process for Homes in Ngio Rai, Nakhon Chai Si

WHD is based in Bang Khae, Bangkok 10160, and has no branch in Nakhon Pathom. Customers outside Bangkok arrange an assessment and an appointment by phone or LINE. Visit dates depend on the schedule and on flood-affected roads, and we do not promise same-day service.

1. Survey and assessment: send photos or video to LINE @whd268 with the size of the house, how high the water rose and how long it stood. The team identifies the zones to treat and what to prepare.
2. Mud removal and washing first: the owner or a cleaning crew removes mud and rubbish, discards damaged materials and washes surfaces with clean water and detergent. Spraying comes after washing, never instead of it.
3. Zoning and preparation: high-risk zones such as bathrooms, kitchens, the ground floor and storerooms are marked, and food, dishes and personal items are packed away.
4. Spraying: trained technicians spray and/or apply an ULV (Ultra Low Volume) fine mist of CHEMGENE HLD4H over floors, walls, high-touch points and corners. People, children, older adults and pets must leave the zone during application.
5. Waiting and re-entry: service information says to wait about 30 minutes before normal use. Always follow the re-entry time the technicians give on site and ventilate before settling back in.

If musty air lingers, ask about our complementary residential ozone disinfection, and read more about the disinfectant on the CHEMGENE HLD4H product page.

10 Reasons Nakhon Chai Si Homes Should Be Disinfected After the Water Recedes

1. Water that stands for days carries germs from septic tanks, animal pens and canals all at once.
2. Washing removes mud, while disinfection spraying deals with germs left on surfaces afterwards.
3. ULV fine mist reaches corners, cabinet backs and spaces under furniture that a mop misses.
4. CHEMGENE HLD4H is a medical-grade disinfectant stated to cover viruses, bacteria and fungi.
5. The service page lists approvals and endorsements from the Department of Medical Sciences, Mahidol University, NHS England and EN 14476:2013+A2:2019.
6. Trained technicians focus on bathrooms, kitchens and high-touch points.
7. Re-entry is typically after about 30 minutes, following the technicians' instructions.
8. Families with infants and older relatives gain confidence before sleeping downstairs again.
9. It suits homes, shops, restaurants, schools and offices, and a tax invoice is available.
10. The current promotion includes a free CHEMGENE spray bottle and WELLGIENIC wet wipes for ongoing care.

Before and After Disinfection: A Ngio Rai Home After the Flood

Recovery Checklist for Flooded Homes in Ngio Rai, Nakhon Chai Si

Before going back in

• Check provincial and district announcements that water levels are safe.
• Switch off the mains and have an electrician inspect the system.
• Prepare rubber boots, gloves, a mask and eye protection.
• Photograph the damage before cleaning.

While cleaning

• Remove all mud, starting with the bathroom and kitchen.
• Discard flooded food, medicines and cosmetics.
• Throw out soaked mattresses, pillows, rugs and soft toys.
• Wash surfaces with clean water and detergent, then dry them.
• Clean water storage tanks before reuse.

Spray day and after

• Everyone, including pets, stays out of the zone while technicians work.
• Wait for the stated time, then open doors and windows.
• Keep wiping high-touch points during the first week.
• Watch for fever, diarrhoea, rashes or inflamed wounds, and see a doctor if they appear.

FAQ: Post-Flood Disinfection in Nakhon Pathom

Can WHD serve Ngio Rai?
Yes. Call 065-556-6294 or message LINE @whd268 for an assessment and an advance appointment. We are based in Bang Khae, Bangkok, with no Nakhon Pathom branch, and dates depend on the schedule and road access.

Do we have to clean before spraying?
Yes. Mud must be removed and surfaces washed first, because disinfectant works best on clean surfaces.

Do we need to leave during spraying?
People and pets must leave the sprayed zone and return at the time technicians give, typically about 30 minutes according to service information.

Will spraying prevent leptospirosis?
It reduces germs on indoor surfaces, but it cannot protect you while wading outside. Keep wearing boots, cover wounds and see a doctor about any fever after wading.

Does it leave no residue at all?
We do not make that claim. Follow the technicians' ventilation advice and wipe food-contact surfaces before use.

How much does it cost?
It depends on area, number of zones and distance. Send details on LINE for a quotation.

Bring Your Family Home to Ngio Rai With Confidence

Once the mud is out and the house is washed, let WHD technicians disinfect the high-risk zones with CHEMGENE HLD4H. Send us photos for an assessment.

See the Disinfection Spraying Service

Call 065-556-6294 · LINE @whd268

Related Links and References

• World Health Disinfection spraying service
• Residential ozone disinfection
• Siam Rath, Nakhon Chai Si flood report (5 Oct 2026): siamrath.co.th/regional/326639
• Government PR Department, national flood summary (7 Oct 2026): prd.go.th
• CDC flood guidance: cdc.gov/floods
• WHO fact sheets: who.int
• Thailand Department of Disease Control: ddc.moph.go.th