What allows certain lilies to purify water

Keep the fresh water tank permanently clean with 3 simple rules

From day one I kept our fresh water tank clean and the work has always paid off so far. The effort is not that big and your stomach will thank you for it. There is nothing worse than lying flat with an upset stomach on a well-deserved vacation.

The entire water system in the motorhome is always moist, because even if the tank is supposedly completely empty, some residual water still collects in the corners and especially in the pipes throughout the vehicle. Then rule here almost paradisiacal living conditions for viruses and bacteria, that one can happily do without. Especially in summer when the temperature is between 20 and 45 degrees Celsius, they multiply very quickly.

Possible bacteria in fresh water

Legionella are so-called moist germs, which can multiply particularly well in water. Legionella, for example, cause Pontaic fever and Legionnaires' disease

Pseudomonads are cold water germs that feel particularly comfortable in lines with less flow. They can cause pneumonia and urinary tract infections, among other things.

Fecal bacteria such as those of the E. Coli strain, occur in both human and animal intestines. The bacteria mainly cause complaints in the stomach and intestines and are associated with inflammation of the appendix or peritoneum.

EnterococciLike E. Coli bacteria, they count as intestinal pathogens and are very dangerous to human health, especially in high concentrations.

A slippery and slimy biofilm tends to develop, which can also be seen with the naked eye. Such contamination must be eliminated and its recurrence prevented. For a generally clean fresh water tank, you just have to3 simple rules note.

Rule 1

Without exception, do not trust any water source. Even at your own water connection or on German parking spaces and camping sites, sterile connections are not a matter of course. The more questionable the water source, the greater the precautionary measures should be. Bacteria and other impurities can usually not be seen optically. Therefore, one should always apply rule 2 and 3.

Rule 2

Always filter the water before it gets into the tank. This is done by so-calledInline filters, which viruses and bacteria keep out while filling. These germs may already be present in the source of the supposed fresh water, or in hoses or fittings. An inline filter is simply inserted in front of the filler neck of the fresh water tank, i.e. between the hose (if possible at the end).

I've been using one for this since the beginningWater filter. This filterawaywithout chemicals and only through a purely physical filtrationdirectly when filling99.9% of all pathogens (Bacteria, fungi, etc.). The filter cartridge inside should be changed after about 12 months.

If the vehicle and therefore also the water have been standing for a certain time, this also includes rinsing the tank before filling up with fresh water. Rinsing is still the best disinfection. Contaminated residual water is flushed out of the services and thus prevents rapid recontamination. To do this, simply drain the remaining water from the tank, use fresh water (preferably always with an inline filter), open all water taps and rinse the lines for 1 to 2 minutes. Then open the nozzle of the tank, drain the entire contents, close the tank again and fill up with fresh water.

Rule 3

Only use your own hose, a hose suitable for drinking water (Link*) with KTW or W270 approval. No matter how practical you are, Please never use pull-out telescopes or spiral hosesbecause these germinate in record time.

Extreme caution is required, especially at supply and disposal stations. The hoses there, which are actually intended for the fresh water, will unfortunately be used again and againAlso used by some motorhome owners to clean toilet cassettes or carelessly laid on the dirty floor. Never insert other hoses into the fresh water tank, because you could then use themdangerous fecal bacteria get into the tank.

Therefore, always use your own hose and never lay it on the floor and after use, let the remaining water drain out of the hose before stowing it away again. Before the next filling, then rinse the hose briefly and then let a few liters run through the inline filter before refilling the fresh water tank.

Preserve water

Even if the first three rules are adhered to, it can unfortunately never be completely ruled out that there are still germs in the tank - and / or that they are smuggled in when the tank is filled. Who thoroughly cleans his tank at least once a year and always uses an inline filter that does not have to additionally disinfect its fresh water.

Preservation with a suitable preparation is nevertheless advisable. We currently still have a silver net * (Silvertex system) from WM aquatec in use in our tank for water conservation.

Silver ions inactivate / kill bacteria, viruses and fungi / yeasts. Silver ions are very effective in their effect, as bacteria & Co. are attacked from several sides. Silver ions damage the cell membrane, inactivate cell enzymes and prevent the formation of new DNA. The silver net is suitable for the preservation of the water during the journey, as well as when standing still and keeps the water fresh for up to 6 months.

Notes on silver preservation

The so-called ยง 11 list of the Drinking Water Ordinance contains all substances that may be used for the treatment of drinking water and silver and silver chloride have been deleted here. Silver may continue to be used for personal use. Even though silver has been removed from the list for more formal reasons, there are different opinions about possible health hazards. The Federal Institute for Risk Assessment had already declared in 2009 that silver posed no recognizable danger.

The manufacturers have already announced that they will continue to offer their products in the same composition in the future and will make maximum adjustments to the labels. Only the manufacturer Lilie has its product Certec 3in1* customized. This is based only on minerals, which should have an ionizing and antiseptic effect. In retail I have not yet come across the new version, at least in terms of the descriptions.

According to the description, the version with silver ions was still sold at different dealers. But as soon as the new version Certec 3in1 is available, I would switch. For a little more money there is also the ae-aqua filter C1-100, which also does without silver ions. Here a catalytic process ensures clean water, in which a microelectrical field and free oxygen radicals are created between two precious metals (fine grids in the filter housing).

Clean the tank

If the vehicle has stood still for a long time, you have bought a new vehicle and even more used one, then you should thoroughly clean the entire fresh water system once. This is also recommended if you cannot really assess the hygiene situation of the tank and have never used an inline filter before.

To clean the inside of the actual tank, you can of course only use new sponges and rags and it is best to wear hygienic gloves. Otherwise you might drag yourself into the tank with germs. The water pipes cannot be cleaned mechanically and water disinfection preparations based on chlorine or chlorine dioxide must be used here. For an intensive tank renovation you should definitely use a multi-stage preparation and the process is quite simple.

For this there are e.g. the products from the manufacturer MultiMan. The Yellow Box * for new, the Red Box * for well-maintained and the Black Box * for let's say questionable water systems.

Step 1: Clean Remove fresh biofilms from tank and lines with KeimEx + so that the fresh water system is clean and can be disinfected.

2nd step: Removal of limescale. Remove limescale and plasticizer deposits in the hoses with KalkEx, eliminate bad smells, prevent recontamination, legionella and bacteria growth.

3rd step: Disinfect of tank and pipes. Kill bacteria, fungi and viruses with ChloroSil.

Always pay attention to the exact dosage. To do this, you have to know exactly how much water is in the tank, because overdosing is not advisable. This works best with a water meter *.

If you have cleaned the tank thoroughly, you only need to adhere to the 3 rules described above and the water should then be as free of germs as possible.