Product · Water Management
Product · InnDex 62 · Evidence provided · High specification risk
Water-free urinals using biodegradable liquid seals to eliminate flushing, water supply, and legionella risk.
Waterless urinals replace traditional water traps with a floating cartridge of lighter-density biodegradable liquid that acts as an odour and bacteria barrier. They eliminate water consumption (90,000–150,000 L/urinal/year claimed), remove flush valve infrastructure, and reduce legionella exposure in commercial facilities. Urine still drains to waste pipes; the seal cartridge requires periodic replacement.
Waterless urinals replace the water trap with a floating biodegradable liquid cartridge that blocks odour and drain gases while allowing urine to pass to waste — eliminating flush valve infrastructure and, at the headline figures, saving 90,000 to 150,000 litres per urinal per year in high-traffic commercial buildings. They also remove the stagnant water conditions associated with Legionella risk in traditional trap designs, and they sit within BREEAM low-water certification pathways. The operational dependency that specifiers need to price clearly is the cartridge: its regular replacement is a recurring consumable cost and logistics commitment, and if cartridge supply is disrupted or replacement is deferred, odour control fails immediately — there is no fallback to flushing. That makes this system more sensitive to facilities management discipline than a traditional flushing urinal, and it is a harder sell in buildings where maintenance regimes are light-touch or outsourced to teams unfamiliar with the technology. The cited water-saving figures originate from CIBSE and BSJ references that were not directly verified in the source record, and whole-life cost data comparing waterless and traditional systems across diverse user populations is limited to pilot evidence rather than longitudinal studies. Environmental downstream effects of cartridge disposal and biodegradable liquid breakdown in diverse sewer systems are also incompletely mapped. Best fit is high-footfall commercial facilities with an engaged FM team and a clear cartridge supply contract already costed into the specification.
CIBSE Guide G (2024) and Building Services Journal (2020) cited but not independently verified for this analysis. Annual water savings figures (90,000–150,000 L) are plausible for high-traffic sites but depend heavily on occupancy and baseline flush frequency; manufacturer claims lack third-party validation. Legionella risk reduction is mechanically logical (no stagnant water) but long-term field epidemiology is limited in public literature. Cartridge disposal impact and cost-of-ownership over 10+ years not addressed in source material. Technology is deployed but not at enterprise or municipal scale.
#water_conservation #sanitation #commercial_washrooms #legionella_risk_reduction #waste_management