Underground rainwater harvesting and stormwater detention often face challenging site conditions such as shallow rock, high groundwater, or vehicle traffic loads. GRAF underground tanks and modular EcoBloc retention cells provide lightweight handling during excavation combined with high structural stability once backfilled.
The range includes Carat S underground rainwater tanks, low-profile Platin flat tanks, and EcoBloc modular detention cells for civil drainage and stormwater management. Their lightweight design simplifies site excavation and installation while maintaining strong ground-pressure resistance.
At Foundation Pumps, we assist builders and plumbers with storage volume calculations, filtration packages, and tank delivery logistics. Order GRAF water storage systems online with Australia-wide delivery and knowledgeable trade support.
More Products Coming Soon.. Looking for something specific? Contact our team to discuss your requirements.