A Story From the Field: Clean for Less Than a Week

Uncle Sompong is sixty-one. He lives with his wife and their nine-year-old granddaughter in a two-storey house near the Yom River in Bang Rakam district, Phitsanulok. The ground floor is concrete; the upper floor is timber. In late September 2026, water filled the ground floor almost to waist height and stayed for more than a week. When it finally receded, the whole family and several neighbours spent days shovelling mud, scrubbing floors, washing walls and carrying salvageable belongings back down from upstairs. Uncle Sompong ordered new timber to replace the swollen doors and bought paint to freshen up the walls.

Less than a week after the house was clean, heavy rain fell for several days in a row. The Yom rose again, and the ground floor went under for a second time. The water didn't reach the same height as before, but walls that had not yet dried were soaked again. A fresh layer of mud settled on the floors they had just scrubbed, and the timber he had stacked downstairs was ruined.

When the second flood drained away, Uncle Sompong stood in the doorway feeling utterly drained. The musty smell was stronger than the first time. Black spots were appearing in the corners. His granddaughter had an itchy rash on her legs, and his wife had started coughing every night. The questions running through his head were simple and heavy: should we clean everything again? Should we repair now or wait? And how do we avoid wasting all that effort if the water comes back once more?

Why a Second Flood Hits Harder Than You Expect

A house that floods twice doesn't just suffer the damage of the new water. The effects stack on top of each other:

• Walls and floors were still wet from round one: the second flood pushes moisture levels in concrete, brick and timber even higher, so everything takes much longer to dry.
• Mold already had a head start: in the days between floods, mold began growing in damp spots. A fresh soaking lets it spread faster.
• A new load of flood-borne germs: each flood brings new contamination from sewage, latrines and livestock pens, including bacteria such as E. coli and the organisms that cause leptospirosis.
• Energy and morale run low: exhausted families are more likely to skip important steps such as proper drying and disinfection.
• Money spent on repairs too early: paint, timber and materials bought before the flood season is over can be lost to the next flood.

Recognising this is not about being pessimistic. It is about choosing the right order of work so that every baht and every hour you spend actually counts.

It also helps to be realistic about drying times. A concrete wall that has been soaked twice in a few weeks may need far longer to dry than one that flooded once, and timber that swelled in the first flood may not have recovered before the second. Planning with that in mind prevents the frustration of repairs that fail within weeks.

Living in an Area Where Water Returns

Bang Rakam sits in a low-lying part of the Yom River basin, and many families here have long experience of seasonal water. Fields around the district are often used to hold water during the wet season, and households tend to plan their year around it. That local knowledge is a real strength. What has changed for many families is the pattern within a single season: water can rise, fall and rise again within a few weeks, leaving very little time for a house to dry out in between.

This is why recovery in Bang Rakam needs a slightly different mindset from recovery in a city that floods once and then dries. The goal after each flood is not to make the house perfect. The goal is to make it safe and healthy to live in, protect what can be protected, and save the bigger investments for when the season is truly over.

Health Risks to Watch Closely After Repeat Flooding

• Leptospirosis: wear rubber boots and gloves every time you wade through water or shovel mud. If you develop a high fever and muscle pain, particularly in the calves, after contact with floodwater, see a doctor and mention that you have been in floodwater.
• Rashes and infected wounds: rinse skin with clean water after contact with floodwater, and keep any cuts clean and dry.
• Diarrhoea: wash hands before eating and throw away any food that touched floodwater.
• Allergies and asthma: the extra mold spores after a second flood can trigger coughing, sneezing and breathing difficulties.
• Mosquitoes: water left standing around the house after the flood is an ideal breeding ground.

This is general information only. If anyone in the family feels unwell, please consult a doctor or your local sub-district health promoting hospital.

After the Second Flood: Do Now Versus Wait

Do straight away

1. Check electrical safety: switch off power to the ground floor and have an electrician inspect it before using anything.
2. Shovel mud while it is still wet: dried mud bonds to surfaces and is far harder to remove.
3. Sort and discard: mattresses, pillows, soft toys, cardboard boxes and food that went under a second time should go. Don't try to rescue them twice.
4. Open the house up to dry: open every door, window and cabinet, and pull furniture away from the walls.
5. Disinfect high-touch surfaces: wipe door handles, stair rails, the dining table and kitchen counters with a disinfectant such as the CHEMGENE HLD4H spray, following the label directions.
6. Disinfect the whole ground floor: reduce the new load of flood-borne germs before the family moves back into those rooms.

Wait before doing

• Repainting: wait until the walls are genuinely dry and the flood season is over.
• Replacing timber floors, wooden doors or built-in cabinets downstairs: if more flooding is possible, use temporary solutions for now.
• Bringing new furniture downstairs: keep it upstairs, or wait until the risk period has passed.

Timber Houses, Half-Timber Houses and Raised Houses: Different Needs

Homes in Bang Rakam and neighbouring districts come in several styles, and each copes with repeat flooding differently.

• Raised timber houses on stilts: the living space often stays dry, but the open area underneath fills with mud and stored items, and the posts and lower floorboards draw moisture upwards. Clear the space under the house, disinfect it, and let the breeze move through.
• Half-concrete, half-timber houses: the concrete ground floor floods while the timber upper floor absorbs rising moisture. The junction between concrete and timber is a frequent mold spot. Keep an eye out for signs of termites too, and if you find any, have a termite specialist inspect directly.
• Single-storey concrete houses: these suffer most when flooding repeats, because every room goes under. Keep essentials on high shelving or with relatives on higher ground during the flood season.

Whatever the style, closed rooms such as bedrooms, prayer rooms and storerooms hold the most musty odor and mold. Air them out every day, and make them the first priority for ozone treatment.

What to Keep and What to Let Go After a Second Flood

Repeated flooding leaves many families unsure which belongings to keep. A simple rule helps. Items that can be washed, disinfected and dried all the way through, such as ceramic dishes, metal pots, plastic furniture and glassware, can usually be kept. Items that soak up water and cannot be cleaned on the inside, such as mattresses, pillows, fabric toys, cardboard boxes, flooded books and dry food that got wet, should be thrown away.

Religious objects and items of sentimental value, such as Buddha images, family photographs and important documents, deserve gentle care. Wipe them clean softly, let them dry in the shade and keep them upstairs. During ozone treatment, our team always covers or removes these items from the treated area first.

Why Washing Everything Again Isn't Enough

• Bleach alone: it works on smooth surfaces but does not penetrate timber and plaster that have been soaked twice. Its strong fumes also irritate the airways of older people and children.
• Fans alone: they dry the surface, but moisture built up over two floods needs time and sustained ventilation.
• Incense or air fresheners: they cover the smell for a while; the source remains.
• Painting straight over: the paint bubbles, mold returns, and if the water comes back the money is lost.

Timing Disinfection and Ozone Treatment Around the Flood Season

In an area where flooding may repeat, the timing of the work matters as much as the method. That is why the WHD disinfection service and ozone treatment service split the job into two phases.

Phase 1: after each flood recedes

1. Survey and advice: we assess the damage and tell you which materials should be removed and which belongings should go.
2. ULV disinfection fogging: we apply CHEMGENE HLD4H to reduce germs on ground-floor surfaces, bathrooms, the kitchen and the area under the house, so the family can use those spaces with more confidence.

Phase 2: once the risk period has passed and the house is drying

3. Full disinfection fogging: throughout the house, including behind cabinets, under the stairs and in storerooms.
4. Ozone treatment: to reduce mold spores and break down the musty odor built up over two floods. No people, pets or plants may be inside during treatment. The dose is matched to the space, and appliances, rubber items and delicate religious objects or valuables are covered or removed first.
5. Ventilation: the house is opened up and aired until it is safe to return.
6. Re-check: we check odors and mold spots, and only then do you plan permanent repairs.

This two-phase approach keeps the family safer from the very first flood, without paying for a major job several times over while the water may still return. If you are unsure which phase your home is in, send us a few photos on LINE and we will help you decide.

Cleaning the Space Under the House Safely

For raised houses, the area underneath often collects the worst of the mud, debris and animal waste. Clear it in daylight, wearing boots, gloves and a mask. Shovel out the mud first, rake away debris, and check carefully for snakes, scorpions or other animals that may have taken shelter there. Once the ground is clear, disinfection fogging reduces germs on posts, steps and stored equipment. Leave the area open so that wind and sunlight can do their work, and avoid putting anything back underneath until the ground has dried.

A Simple Moisture Check Between Floods

You don't need special equipment to get a sense of whether your house is drying. Every few days, walk through the ground floor and check the same points:

• Press a dry tissue against the lower part of a wall for a few seconds. If it comes away damp or cool, the wall is still wet inside.
• Look at the salt deposits on concrete. If they keep growing, moisture is still coming out.
• Notice the smell first thing in the morning. A weaker smell each week means you are on the right track.
• Check the underside of wooden furniture and the bottom of door frames for new black spots.

When these signs settle down and the flood risk has passed, it is the right moment for full disinfection fogging, ozone treatment and permanent repairs.

What Happens on Treatment Day

On the day of a Phase 2 visit, the team begins by walking through the house with you to confirm which rooms need the most attention. Food, medicines, documents and small valuables are put away. Electrical appliances, rubber items, Buddha images and family photographs are covered or moved out of the rooms to be treated. Disinfection fogging is done room by room, then everyone, including pets, leaves the house and plants are taken outside before the ozone generator is started. When treatment is complete, the house is opened and ventilated thoroughly, and you are told clearly when it is safe to go back inside. Many families plan a visit to relatives or the temple for that part of the day.

Preparing for the Next Rains: Act Today, Lose Less Next Time

• Make raising things a habit: use tall metal or plastic shelving, and store ground-floor essentials in lidded plastic boxes instead of cardboard.
• Important documents: keep them in waterproof pouches upstairs, and photograph them on your phone.
• Electrics: talk to an electrician about putting the ground floor on a separate circuit and raising socket heights.
• Ground-floor furniture: choose water-resistant materials such as plastic or metal, and pieces that are easy to carry upstairs.
• The space under the house: keep it clear. Piles of timber or sacks soak up water and become mold sources.
• A recovery kit: keep rubber boots, gloves, masks, brooms, shovels, rubbish bags and disinfectant upstairs, ready to use as soon as the water drops.
• Follow flood updates: keep track of announcements from the district office, the village headman and relevant agencies so you have time to move things up.
• Save service contacts in advance: keep your provider's phone number and LINE contact handy so you can book as soon as the water recedes.

Looking After Yourself and Your Neighbours

Repeat flooding is exhausting in a way that is hard to explain to anyone who has not lived through it. Many older residents in Bang Rakam have seen floods year after year, and the second clean-up of a single season can feel overwhelming. Share the heavy work with neighbours, take turns resting, and make sure older relatives and children are not doing tasks that expose them to floodwater or mold. Simple routines help too: start each morning by opening the house, end each day by washing boots and gloves, and keep a short list of what has been done and what still needs doing. Progress becomes visible, and that matters for morale.

10 Reasons Bang Rakam Families Plan Their Recovery With WHD

1. We understand areas that flood repeatedly and won't push major repairs at the wrong time.
2. We split the work into phases, keeping you safe from round one without paying for big jobs twice.
3. We disinfect with ULV fogging that covers the space under the house and every corner.
4. We use CHEMGENE HLD4H and are happy to show you the label.
5. We remove built-up musty odors through our ozone treatment service.
6. We follow clear safety steps for homes with older people and children.
7. We handle religious objects and valuables with care, covering or removing them before ozone treatment.
8. We tell you honestly which items should go, so you don't waste energy saving risky belongings.
9. We offer mosquito spraying around the home after the water drops.
10. We give practical, concrete advice for preparing your home for the next flood.

Before and After Recovering With a Plan

Customer Voice (Illustrative Scenario)

"The first time, I rushed the repairs because I wanted the house back to normal quickly. When the water came again we lost a lot. This time the team said to clean and disinfect first so the family is safe, leave the big repairs until after the flood season, and do the ozone treatment once the house has dried out. Doing it in that order has taken a weight off my mind."

— Uncle Sompong, house by the Yom River, Bang Rakam (illustrative field scenario)

Frequently Asked Questions

Q: If more flooding is likely, should we disinfect now anyway?
A: Yes, the areas where the family lives should be cleaned and disinfected after every flood to reduce health risks. Larger jobs, such as whole-house ozone treatment and permanent repairs, are best left until the house begins to dry and the risk period has passed.

Q: A mattress went under in the first flood, dried, then went under again. Can we keep it?
A: We don't recommend it. Mattresses that have been in floodwater often hold deep contamination and mold, especially after repeated soaking. For the family's health, it should be discarded.

Q: Does a raised timber house need ozone treatment?
A: The open area under the house usually doesn't, but it should be disinfected and allowed to dry. Enclosed rooms that smell musty, such as bedrooms and storerooms, benefit greatly from ozone treatment.

Q: What do we need to do during ozone treatment?
A: Everyone, including pets, must leave the treated area, plants must be moved out, and nobody should go back in until the team has finished ventilating and confirms it is safe.

Q: What should I do if I develop a fever after wading through floodwater?
A: See a doctor or visit your local sub-district health promoting hospital, and mention that you have been in floodwater so they can assess for leptospirosis and other infections.

Q: Do you serve Bang Rakam and Phitsanulok?
A: Please ask about service coverage and scheduling in Phitsanulok province via LINE @whd268 or by calling 065-556-6294.

You Don't Have to Face Repeat Flooding Alone

Send us photos of your home after the latest flood via LINE, and our team will help you plan the right order of work.

View Disinfection Service – Click Here

Book Ozone Treatment – Click Here

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

Related Links

• Residential ozone disinfection
• Mosquito spraying service
• Master Ozone Generator
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Health reference: World Health Organization (WHO): Floods · Department of Disease Control, Thailand