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Reduction of viruses, bacteria & spores.
Reduction of viruses, bacteria & spores.
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Regenwassertank, regenwasser entkeimen Regenwassertank, regenwasser entkeimen Regenwassertank, regenwasser entkeimen

Rainwater tank

Instantly clean rainwater: powerful disinfection for your rainwater tank

 Regenwassertank, regenwasser entkeimen
Ein Regenwassertank sammelt nicht nur Wasser, sondern auch Schmutz, Keime und Biofilm. Eine gezielte Desinfektion unterstützt die hygienische Wasserqualität und ergänzt die mechanische Reinigung sinnvoll. Wer Regenwasser hygienisch nutzen oder perspektivisch trinkbar machen möchte, braucht ein klares Verständnis der notwendigen Schritte. AnoKath unterstützt die Wasserhygiene als Teil eines verantwortungsvollen Aufbereitungskonzepts.

Disinfecting rainwater tanks – easy & safe with AnoKath TW

AnoKath TW is a ready-to-use disinfectant for rainwater tanks, IBC containers, and cisterns. It is highly effective against germs – and leaves absolutely no residue .

Advantages at a glance:

  • Effectively removes germs, biofilm & algae
  • No cleaning required – simply pour in & let it work
  • Food safe & pH neutral
  • No resistance development
  • Free from chlorine, alcohol, copper or silver. Replace this text with your content

Advantages of AnoKath® TW for rainwater treatment

  • combats bacteria, viruses, fungi and biofilms (including Legionella, E. coli bacteria, Enterococci, etc.)
  • free from organic chemical compounds
  • When used as intended and correctly, it ensures the protection of the health of all groups of people.
  • produced by electrolysis using water and table salt
  • tested according to DIN EN 14347, DIN EN 14476 and DIN EN 1040
  • Dermatological test passed with a grade of "very good".
  • Produces hygienically pure drinking water for all domestic and farm animals.
  • leaves no residue
  • does not attack metals
  • is produced in Germany
  • Mixing ratio: 1:1000 dh (1 part AnoKath® TW 1000 parts water)

Take advantage of the benefits that AnoKath® TW offers for disinfecting rainwater tanks. If you have any further questions, please feel free to contact us by phone or email.
Wasseraufbereitung für Trinkwasser – geeignet für Tiere, Haushalt und Gewerbe
Water treatment – ​​drinking water for animals, households, businesses
Trinkwasserdesinfektion
Wasseraufbereitung: hygienische Versorgung mit sauberem Trinkwasser für Tierhaltung und Betrieb
Water treatment – ​​drinking water for animals, households, businesses
Water treatment – ​​drinking water for animals, households, businesses

Water treatment – ​​drinking water for animals, households, businesses

€14,90 / l

€14,90
€14,90

Use of rainwater

Roofs typically serve as rainwater collection surfaces. The water flows through downpipes into collection containers. The simplest form of collection basin is the rain barrel, which is now available in aesthetically pleasing shapes such as amphorae and columns. Water is scooped out of it with a watering can or drawn via a tap. On the other hand, modern rainwater harvesting systems offer far more possibilities, especially since they have a larger capacity.

They are equipped with a pump that directs the water for use in both the garden and the household. If the water is not used for drinking, food preparation, or personal hygiene, it can be replaced by service water, also known as utility water or industrial water. For use within the house, a separate pipe system from the drinking water supply is required.

Disinfecting rainwater – water from rainwater tanks is typically used for:

  • Irrigation systems for riding arenas & riding halls
  • Garden irrigation (softer than tap water and more compatible with plants)
  • toilet flush
  • washing machine
  • for cleaning

In commercial and agricultural operations, the applications are far more diverse, such as for cleaning machinery or as cooling water. When it comes to animal watering, water treatment is essential to protect the animals from germs.

Disinfecting rainwater tanks – easy & safe with AnoKath TW

A rainwater tank can become a breeding ground for germs, algae, and biofilm. If you want to keep your collected water clean, you need targeted disinfection – not just regular cleaning . That's exactly what AnoKath TW was developed for:
Effective. Residue-free. Safe for humans, animals and plants.

Rainwater tank – water is life. Humans, animals, and plants cannot exist without this precious resource, as it serves as a solvent for various metabolic processes and is an essential component of bodily fluids and cells. Especially now, during periods of summer drought, we are becoming increasingly aware of what a vital resource it is on our planet. Collecting rainwater in rainwater tanks is therefore gaining in importance, not least to save costs. Disinfect rainwater with AnoKath TW.

Disinfecting the rainwater tank

For garden irrigation, the problem may be less significant, but for household use (washing machine, toilet flushing), contaminated rainwater poses a definite risk due to hygiene concerns. While germs are killed during 60°C wash cycles, this is no longer the case during subsequent rinses with cold water from rainwater tanks. People with weakened immune systems are particularly at risk if they come into contact with or wear clothing washed with contaminated water.

Above-ground and underground rainwater tanks

Cisterns, used to collect rainwater, are buried in the ground. Suitable materials for the cistern's shell include plastics (usually polyethylene) and concrete. While the installation requires more extensive excavation compared to above-ground rainwater tanks, the underground option doesn't restrict the available space in the yard or garden. Furthermore, the water underground maintains a consistent temperature and is protected from freezing in winter.

Since water expands when it freezes, above-ground rainwater tanks are at risk of bursting. While cold-resistant plastic rainwater tanks are available commercially, these should still be filled to a maximum of 75% in winter to allow sufficient room for expansion. Otherwise, the only option is to completely empty the rainwater tank in autumn.

FAQ Regenwassertank desinfizieren

Why should I disinfect my rainwater tank at all?

Over time , biofilm, algae, odors, and microbial contamination can build up in rainwater tanks – especially in warm, light-filled environments, during extended periods of stagnation, and with the addition of organic matter (leaves, insects, sludge). This affects not only the tank itself, but also pipes, pumps, and taps .
AnoKath advantage: With AnoKath you build a clear hygiene routine : not just "clean once", but keep your system permanently hygienically stable – ideal if rainwater is used for animal husbandry, stables, drinking/process water or technical applications.

How can I tell if my rainwater tank is becoming unhygienic?

Typical signs include:

  • musty smell or "moldy" impression
  • Streaks , slippery coatings, algae growth
  • Filters become clogged more quickly, water becomes cloudy
  • Deposits at the bottom of the tank (sludge)

AnoKath advantage: AnoKath helps you to take early countermeasures before a "slight odor" becomes a permanent problem throughout the entire pipe network.

What is the most common mistake when disinfecting a rainwater tank?

The most common mistake is disinfecting without prior cleaning . If sludge, biofilm, and organic residues remain in the tank, the contamination will quickly return – no matter how good the product is.
AnoKath advantage: AnoKath fits perfectly into a professional workflow: first clean , then stabilize hygiene with AnoKath – and subsequently maintain a short routine.

What is a practical procedure for disinfecting rainwater tanks and pipes?

A proven approach (systematic rather than "rule of thumb"):

  • Empty the tank (as far as possible) and remove sediment/sludge.
  • Clean walls/interior surfaces (mechanically remove deposits) and rinse.
  • Clean filters, sieves, and pre-separators (this is often where dirt accumulates).
  • Include pipes and dispensing points (run the pump, briefly drive through all dispensing points) so that not only the tank is "nice".
  • Then carry out disinfection of the system (tank + pipe network as a unit)

AnoKath advantage: With AnoKath you get a uniform solution for exactly this systems thinking: tank, lines, dispensing points and contact points – as a repeatable standard.

How often should a rainwater tank be disinfected?

That depends heavily on usage and conditions. In practical terms:

  • Season start / after a longer period of inactivity: a thorough reset
  • In case of odor, algae bloom, excessive heat or filter problems: earlier, depending on the cause
  • Regular operation: regular hotspot routine (filters/sampling points) to prevent the tank from tipping over again "from the bottom up".

AnoKath advantage: AnoKath makes it easy to turn large individual actions into a short, regular routine – this is exactly what prevents most relapses.

How exactly can AnoKath help to keep the rainwater tank hygienically stable in the long term?

AnoKath is particularly useful if you are looking for an alcohol-free hygiene system that you can consistently implement:

  • Stabilize hygiene in the tank and pipeline environment (instead of just masking odors)
  • Reduce contact chains : taps, handles, work surfaces, equipment around the tank
  • For animal-related use: a clear concept for water hygiene in everyday stable life

Important for clarity: AnoKath can help keep your system hygienically stable. It is not intended for human use; its focus is on animals and livestock housing.