Surface water cassettes – Effective and sustainable management of surface water
Safely and effectively managing stormwater is becoming increasingly important due to increased rainfall and denser development. Our stormwater cassettes are part of a modern system for infiltration, attenuation, and storage of rainwater. They help reduce flood risk and relieve the municipal sewer network, while promoting sustainable water management.
The difference between stormwater cassettes and other systems
The terms 'stormwater cassette', 'stormwater reservoir', 'detention reservoir', 'downpour reservoir', and 'stone crate' are often used to describe similar solutions with different capacities and uses. They all aim for the same thing – to manage and delay large amounts of stormwater.
At Plastinject Watersystem, we have chosen to group these solutions under the term stormwater storage, as it covers everything from small garden solutions to large infrastructure systems.
Do you want to be sure you are choosing the right product for your project? Contact our knowledgeable advisors and we will help you to size a solution that is optimised for your needs and ground conditions.
En dagvattenkassett är en typ av modulär, dränerande behållare som används för att underjordiskt lagra och filtrera dagvatten (regnvatten eller smältvatten) från olika ytor som tak, parkeringsplatser eller gräsmattor. Dessa kassetter är ofta tillverkade av återvunnen plast och är utformade för att ha hög lagringskapacitet med en stor volym av ihåliga utrymmen. När dagvatten leds in i kassett systemet, lagras det tillfälligt och kan sedan antingen infiltrera långsamt ner i marken, filtreras genom olika lager av material som grus eller geotextil, eller så kan det kontrollerat ledas bort till ett avloppssystem eller en annan avsedd plats. Kassetter används för att minska belastningen på dagvattensystem, förhindra översvämningar, förbättra vattenkvaliteten genom filtrering och för att bidra till grundvattenpåfyllnad.
A stormwater cassette is a modular unit used to collect, store and infiltrate surface water into the ground. They can be combined into larger systems depending on requirements, and are used at private properties, residential areas, industrial sites and car parks.
Modern cassette systems are manufactured from durable plastic materials with high load-bearing capacity and low weight, making them easy to install, maintain, and inspect. They can also be combined with filters and geotextiles to purify the water before it is infiltrated or channelled further.
How big should the stormwater cassette be?
To get the correct dimensions for your system, a calculation based on area, ground conditions, and precipitation data is required. Smaller garden solutions can be dimensioned more simply, while larger installations – for example at schools, sports fields, or shopping centres – require professional calculations.
At Plastinject Watersystem, we offer complete consultation and dimensioning services, considering both cost-effectiveness and future extreme rainfall risks. A correctly dimensioned stormwater crate saves money and protects both buildings and land from flooding.
Advantages of stormwater cassettes
- Effective stormwater delay and infiltration
- Reduced risk of flooding
- Preserved groundwater level
- Flexible modular construction that adapts to the project's size
- Low installation cost and long service life
- Eco-friendly alternative with recyclable materials
Whether you are planning a new build, want to improve an existing drainage solution, or are working on storm water management, we have solutions that can be adapted for both private and public environments.
Contact us for advice, dimensioning, or a quote – we'll help you create safe and sustainable stormwater management.