Quick summary: Post-flood drain smells usually come from silt, food waste and sewage rotting inside pipes, and from dried-out U-bends that let sewer gas back into the house. The slime in pipes is biofilm containing many bacteria, including Pseudomonas. First scrub drains, grates and sinks, refill every water trap, throw away flood-soaked sponges and cloths, and dry the home. Then ozone the rooms to remove lingering odours and help reduce germs in the air and on surfaces. Ozone must be done in an empty room with no people, pets or plants, and the room must be ventilated before re-entry as the technician advises. If a wound becomes red, swollen or pus-filled, or your ear hurts after wading, see a doctor.

The 2026 (2569) Sakae Krang Flood in Uthai Thani: What the News Reported

According to TNews (1 October 2026 / 2569), floodwater entered Wat Uposatharam (Wat Bot) and the surrounding homes along the Sakae Krang River in Mueang Uthai Thani. Water stood at about 50 centimetres to 1 metre and was still rising every day at the time of the report. Residents built a temporary wooden walkway about 800 metres long to get around. The report attributed the flooding to water released from the Wang Rom Klao Dam and the Mae Wong Dam into the Sakae Krang River.

Nationally, the Department of Disaster Prevention and Mitigation (DDPM) reported, as of 06:00 on 7 October 2026 (2569) and published by the Government Public Relations Department, that 27 provinces plus Bangkok were affected, covering 123 districts, 984 subdistricts, 1,154,875 households and more than 3.1 million people. Figures change daily.

The Sakae Krang riverside is one of Uthai Thani's best-known scenes, with timber riverside homes, raised houses, old shophouses and houseboats. With water rising daily and people walking long distances on a wooden walkway, many buildings sat in water for days while drains and toilets took in river water, silt and backflowing sewage. That is where post-flood drain smells and slime begin.

A Typical Scenario: A Timber Shophouse Near Wat Bot

(An illustrative example case describing a common situation, not a real person's account.)

Lamduan has run a small curry-and-rice shop in a timber shophouse near Wat Bot for decades. As the Sakae Krang rose each day, she lifted her pots, stove and food cabinet onto high shelves and left over the temporary walkway to stay with her daughter. The ground floor sat in almost a metre of water. The sink, drain pipes and toilet were underwater for days.

When the water dropped, she came back and cleaned hard. But every time she ran the kitchen tap, a rotten-egg, sewer-like smell rose from the sink. The bathroom floor drain was coated in thick, dark green slime. She poured in bottle after bottle of toilet cleaner, burned incense and set charcoal around the shop. The smell faded for half a day, then came back. Meanwhile, her nephew, who had helped carry things, stepped on a piece of wood under the water and cut his foot. Within days the wound was red, swollen and oozing greenish pus. The family took him to a doctor, who cleaned the wound, treated it and explained wound care and tetanus protection.

Not every wound or drain smell is caused by Pseudomonas. The lesson is that moisture, slime and sewage trapped in pipes must be dealt with first, and that a smell drifting through a food shop affects both health and income.

What Is Pseudomonas aeruginosa and Why Is It in Drains and Slime After a Flood?

Pseudomonas aeruginosa is a bacterium found widely in water, soil and plants. It survives extremely well in damp places and forms biofilm, a layer of slime the bacteria build to shelter themselves on surfaces that stay wet. Biofilm helps germs cling tightly and resist light rinsing and some cleaning products far better than free-floating bacteria.

At home, Pseudomonas and other bacteria favour:

• Kitchen sink pipes and U-bends with food scraps and grease
• Bathroom floor drains and shower outlets with hair and soap scum
• Tap aerators that trap sediment
• Dish sponges, cloths and scrubbing brushes that never dry
• Fridge drip trays and AC drain trays holding standing water
• Water jars, tanks and containers that floodwater entered
• Bathtubs, soaking tubs and bath toys with water trapped inside

Floods make this worse. River water carries silt and organic matter into pipes, some homes get sewage backflow from toilets and septic tanks, and many pipes stay half-blocked after the water drops, so water drains slowly and slime builds easily.

So where does the drain smell come from? It is important to be clear. Drain, rotten-egg and sewage smells mostly come from organic matter decaying inside pipes through bacteria that live without oxygen and release hydrogen sulphide and other gases, and from dry U-bends that let sewer gas back into the house. Pseudomonas is one member of the bacterial community in the slime, not the single cause of the smell. But smell and slime both signal that a drain is heavily colonised and needs proper cleaning.

Pseudomonas Symptoms and Who Is Most at Risk After a Flood

In healthy people, Pseudomonas rarely causes serious illness. It is an opportunistic germ that causes trouble when it finds a way in, such as a wound, an ear that stays wet, or a weakened body. Possible problems after a flood include:

• Flood wound infections: cuts or scrapes from wading become swollen, red, hot and painful, sometimes with blue-green pus.
• Outer ear infection: ear pain, itching and discharge after the ear stays wet.
• Itchy bumps around hair follicles after soaking in a tub or container of unclean water.
• Eye infection, especially in contact lens wearers who rinse lenses or cases with unclean water. Red, painful eyes or blurred vision need urgent care.
• Serious infections such as pneumonia, urinary tract infection or bloodstream infection, usually in people with weak immunity or medical devices.

Groups who should be especially careful

• People with open wounds, diabetic foot wounds or burns
• Older adults and people with diabetes, kidney disease or chronic lung disease
• Cancer patients and anyone taking immune-suppressing medicine
• Bedridden patients with urinary catheters or breathing tubes
• Contact lens wearers
• Young children who play in standing water

Caring for flood wounds: wash the wound quickly with clean water and soap, pat dry, cover with clean gauze and avoid wading again. If redness spreads, pus appears, you develop a fever, or the wound is deep, see a doctor and ask about tetanus vaccination. Treatment must follow a doctor's instructions, because Pseudomonas is often resistant to many common antibiotics. Do not buy medicine on your own.

What the Sakae Krang Community Faces When Drain Smells and Slime Linger

Health: a constant sewer smell leaves people with headaches, nausea, poor appetite and poor sleep, while slime in sinks and bathrooms passes germs easily to hands, sponges and dishes.

Livelihoods: the area around Wat Bot and the Sakae Krang riverside has food shops, cafés, stores and guesthouses. A drain smell drifting from a shop keeps customers away, so reopening after a flood means truly removing the smell, not masking it.

Time and effort: lifting grates, scrubbing pipes, cleaning U-bends and washing every bathroom surface is heavy work, especially in homes of older residents.

Morale: the temple and riverside community are dear to people in Uthai Thani. Returning to mud-stained homes and a temple hall that smells of sewage is disheartening. A clear recovery order helps everyone see that home can be pleasant again.

Why Pouring Cleaner Down the Drain, Burning Incense or Spraying Air Freshener Is Not Enough

• Pouring cleaner only: it flows past quickly without scrubbing the slime off pipe walls, and trapped silt and hair keep rotting. Never mix bleach with acidic toilet cleaners or ammonia, as dangerous gases can form.
• Incense, charcoal or perfume: they mask the smell for a while, but the source in the pipe remains.
• Not refilling U-bends: traps that dried out during the flood or while the house stood empty let sewer gas in all day.
• Reusing old sponges and cloths: anything soaked in floodwater is an ideal germ reservoir; replace it.
• Ignoring the septic tank and main line: if the tank is full or the main pipe is blocked, the smell keeps returning until a plumber or septic truck deals with it.
• Ozone before drain cleaning: ozone removes odours in the room air and helps reduce airborne germs, but it does not scrub slime inside pipes or penetrate tightly attached biofilm. Without drain cleaning first, new smells will form.

In short, drain smells and slime need mechanical cleaning first: scrub, brush, remove and flush out the sediment. Ozone then cares for the air and surfaces in the room, so smells soaked into curtains, furniture and walls disappear as well.

Ozone After the 2026 (2569) Uthai Thani Flood With WHD: How It Works and Where It Fits

Ozone (O3) is a three-atom form of oxygen and a strong oxidiser. It helps break down the structures of viruses, bacteria and mold, and the molecules behind smells such as drain odour, mustiness and sewage. When it is done, it reverts to oxygen (O2) and leaves no chemical residue. The WHD ozone disinfection service states it has been tested by Thailand's Department of Medical Sciences and Intertek (UK) for 99.99% reduction of viruses, bacteria and mold, according to the company's certification.

That certification covers the bacteria, virus and mold groups the company lists; it is not a specific test against Pseudomonas. Ask WHD for the test documents if you want details. For homes with post-flood drain smells, ozone's greatest strength is odour removal in the air, fabrics and room materials once the source in the pipes has been cleaned out.

WHD's ozone process for flooded homes

1. Survey and assessment: send photos of rooms, bathrooms, sinks, smelly spots and the flood line by phone or LINE so the team can assess area and order of work.
2. Clean and dry first: remove mud, wash floors and walls, take out soaked materials such as gypsum boards, carpets and mattresses, scrub pipes, grates and U-bends, refill every trap, check the septic tank, and dry the home.
3. Empty and seal the room: move people, pets and plants out; switch off AC and fans; close doors and windows.
4. Ozone cycle by zone: the technician sets up and controls the cycle, usually about 30 minutes per zone.
5. Ventilate: let the ozone break down and air the room as advised.
6. Re-entry: return when the technician confirms it is safe.

WHD is based in Bang Khae, Bangkok 10160, with no branch in Uthai Thani. Customers in Mueang Uthai Thani and nearby areas can call or message on LINE about coverage, scheduling and a quotation. Travel is confirmed case by case and same-day arrival cannot be promised. Prices depend on area and site conditions, so quotes come only after assessment. Ozone jobs of 15,000 baht or more receive a free medical-grade disinfectant spray, subject to company terms.

Is Ozone Treatment Safe? Rules to Know Before Booking

High concentrations of ozone irritate the eyes, throat and airways, so no person or animal may be in the room during treatment. Done correctly, ozone reverts to oxygen and leaves no residue. Every time:

• The room must be empty: no people, pets, birds, aquarium fish or plants.
• Keep doors and windows closed and post a do-not-enter sign.
• Switch off AC, fans and air purifiers.
• Remove mud, clean drains and dry the room first.
• Ventilate before re-entry for as long as the technician specifies.
• People with lung disease or asthma, young children and older adults should wait until the room is well aired.
• Ozone does not replace seeing a doctor, cleaning drains or repairing plumbing.

10 Reasons Sakae Krang Homes and Shops Should Consider Ozone After the 2026 (2569) Flood

1. Removes lingering drain and rotten-egg smells from room air and fabrics after the pipes are cleaned.
2. Helps reduce airborne and surface germs in the bacteria, virus and mold groups, according to the company's certification.
3. Leaves no chemical residue, suiting kitchens, food shops and bedrooms. See service details.
4. Reaches hidden corners under sinks, behind cabinets and beneath counters.
5. Cuts musty and earthy smells soaked into timber walls and ceilings after days in water.
6. Short cycle per zone, about 30 minutes, then ventilation.
7. Helps shops reopen with customers feeling confident there is no smell.
8. Test documents available from the Department of Medical Sciences and Intertek, according to the company's certification.
9. Works across buildings: timber houses, shophouses, concrete homes, guesthouses and halls. Ask about the service.
10. A team that plans the order, advising which drains, materials and rooms to clean and dry first.

Before and After: A Home With Post-Flood Drain Smells

Example Case: A Small Café on the Sakae Krang

(An illustrative example case to explain the process, not a real customer review.)

Nok, who runs a small café on the Sakae Krang riverside, contacted WHD on LINE because the drain smell from the customer toilet and the sink behind the counter would not go away even after cleaning. The team asked for photos of the pipes, grates and U-bends, then advised calling a plumber to remove and clean the traps, scrub the slime and check the main line that still held silt, and to throw away sponges, cloths and fabric cushions that had soaked in floodwater.

Once the cleaning was finished and the café was dry, ozone was scheduled for the seating area, toilet and back kitchen, zone by zone. The café stayed closed and all potted plants were moved out during treatment. After ventilation as advised, the smell that had clung to the air and timber walls was clearly reduced. Nok said the key was knowing to fix the pipes first and letting ozone finish the job.

Checklist: Removing Drain Smells and Slime After the 2026 (2569) Uthai Thani Flood

• Wear rubber gloves, boots and a mask when cleaning drains and bathrooms.
• Remove mud and wash floors, walls and counters with clean water and detergent.
• Lift drain grates, pull out hair and silt, and scrub the slime with a brush.
• Remove and clean the U-bend under the sink, or have a plumber do it.
• Refill every trap and unused floor drain with water.
• Never mix bleach with acidic or ammonia-based cleaners.
• Remove and clean tap aerators.
• Throw away flood-soaked sponges, cloths and brushes.
• Check the septic tank; call a septic truck if it is full or backing up.
• Remove soaked materials and dry the home completely.
• On ozone day, move people, pets and plants out; switch off AC; close windows.
• Ventilate for the time the technician specifies before re-entry.
• Keep wounds clean; see a doctor for redness, pus, fever or ear pain.

FAQ: Pseudomonas, Drain Smells and Ozone After the Uthai Thani Flood

What is Pseudomonas and is it dangerous?

A water and soil bacterium that loves damp places and forms slime in pipes. Healthy people rarely get seriously ill, but it can infect wounds and ears and cause serious infections in people with weak immunity.

What causes drain smells after a flood?

Mostly silt and organic matter rotting in pipes and releasing rotten-egg gas, plus dry U-bends that let sewer gas back in. Pipe slime holds many bacteria, Pseudomonas among them.

How do I fix a rotten-egg smell in the bathroom?

Lift the grate, scrub the slime, clean the U-bend, refill the trap, check the septic tank and ventilate. If the smell still lingers in the room after cleaning, ozone helps remove it from the air.

My flood wound has green pus. What should I do?

Wash with clean water and soap, cover it and see a doctor promptly. Do not self-medicate with antibiotics, as this germ is often resistant to many of them, and ask about tetanus vaccination.

Does ozone kill Pseudomonas?

WHD does not claim a specific test against Pseudomonas. Its certification covers 99.99% reduction of bacteria, virus and mold groups, according to the company. Ozone cares for room air and surfaces but does not scrub slime inside pipes, which needs mechanical cleaning. Ask WHD for the test documents.

Can ozone remove drain smells?

It removes smells floating in and soaked into the room very well, but drains must be cleaned and traps refilled first, or new smells will form.

Is ozone dangerous?

It is harmful if people or animals are in the room, so it is done in an empty, sealed room for about 30 minutes per zone, with ventilation before re-entry as the technician advises.

How much does ozone treatment cost?

It depends on area and site conditions. WHD quotes only after assessment. Send photos to LINE @whd268 or call 065-556-6294.

Is there ozone service near me in Uthai Thani?

WHD is based in Bang Khae, Bangkok, with no branch in Uthai Thani, but you can ask about travel to Mueang Uthai Thani and nearby areas by phone or LINE. Scheduling is confirmed case by case.

Plan Ozone for Your Uthai Thani Home or Shop After the 2026 (2569) Flood

Send photos of bathrooms, sinks, smelly spots and the flood line so the WHD team can plan the order of work and schedule ozone once drains are cleaned and the home is dry.

View WHD Ozone Disinfection Service

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

Related Links and References

• WHD residential and building ozone disinfection
• Ozone cleaning service
• Test certificates
• Contact WHD
• TNews (1 Oct 2026 / 2569): Flooding at Wat Uposatharam (Wat Bot) and the Sakae Krang riverside, Uthai Thani
• Government Public Relations Department: DDPM flood data as of 7 Oct 2026 (2569)
• CDC: Floods and cleanup safety
• WHO: Fact sheets
• Department of Disease Control, Thailand

Note: Flood figures follow the dates stated in the news and DDPM reports and change daily. Health information is general knowledge, not a medical diagnosis.