Why filter rainwater?
Rainwater running off roofs and paved surfaces is not completely clean – it collects leaves, twigs, moss, dust, pollen, as well as bird or small animal droppings. Without filtration, it would quickly deteriorate, start to smell, and clog pumps or suction hoses. Filtration is therefore a key step that extends the lifespan of the rainwater collection tank and ensures high-quality water for further use.
How does a rainwater filter chamber work?
A rainwater filter chamber operates on a simple but highly effective principle. It is installed underground beneath the downspout and ensures that only water free of large debris enters the rainwater collection tank or infiltration system.
How does the process work? 
- Rainwater inlet – water flows from the gutters into the chamber.
- Debris capture – the filter basket removes leaves, twigs, moss, and other debris.
- Water outlet – filtered water continues into the rainwater collection tank or infiltration unit.
- Filter cleaning – simply remove the basket, clean it, and within minutes everything is ready again.
Types of rainwater filter chambers
There are various types on the market, differing in design and size. The basic model consists of chambers with a removable basket that captures large debris. Some models may also include additional filter elements for finer cleaning.
On the CZ PLAST e-shop, we offer the following options:
- basic rainwater filter chamber – inlet depth 36 cm
- rainwater filter chamber with 40 cm extension – inlet depth 76 cm
- rainwater filter chamber with 100 cm extension – inlet depth 136 cm
These filter chambers are equipped with a filter basket, lid, and DN 160 inlet connector.
Where to install the chamber and how to maintain it
The most common installation is between the downspout and the rainwater collection tank. Simply place it there – and it will take care of the water cleanliness on its own. Thanks to extension modules, it can be adapted to almost any terrain and type of tank. Installation is simple enough for any user without complex tools. And maintenance? That’s a breeze – just remove the basket, clean it, and the water is ready for use again.
Benefits of rainwater filter chambers
Using a rainwater filter chamber brings several practical advantages, making it a long-term worthwhile investment:
- tank protection – prevents sediment buildup in the rainwater collection tank and extends its lifespan,
- cleaner water – higher quality water, more suitable for reuse (e.g., garden watering or toilet flushing),
- easy maintenance and installation – quick handling, minimal time, and no need for complex equipment.
A rainwater filter chamber protects, cleans, and makes life easier. Discover the ideal rainwater filter chamber for your collection tank. Explore the full range at CZ PLAST and enjoy clean water without worries.
