What are Total Suspended Solids? In stormwater runoff, Total Suspended Solids (TSS) refers to undissolved solid particles larger than 0.45µm. Anything smaller is considered a dissolved substance. Pollutants can bind to or become trapped within these solid particles, making TSS a highly effective contaminant transport mechanism from surface road runoff into receiving water bodies. In […]
Stormwater management involves managing both the quantity and quality of surface runoff. An appreciation of a site’s Particle Size Distribution (PSD) is crucial for effective stormwater quality management. The PSD influences sediment transport, settling rates and determines the effectiveness of treatment systems in terms of capturing, retaining and so permanently removing contaminants found in stormwater […]
Tyre wear particles (TWPs) are now recognised as a significant and largely unmanaged source of chemical contamination in urban stormwater. Among the most important tyre-derived chemicals are the vulcanisation accelerators mercaptobenzothiazole (MBT) and diphenylguanidine (DPG), which are used globally to produce durable, heat-resistant rubber. While essential to tyre performance, increasing evidence shows these additives pose […]
As new housing estates are developed, large areas of land are converted into impermeable materials, including roads, roofs and driveways. With the growing population in the UK, the demand for housing increases, contributing to greater urbanisation. The proportion of impermeable surfaces present in urban areas has increased from 37% in 2001 to 46% in 2022 […]
The case for rainwater reuse received a powerful double endorsement during Water Reuse Week with coordinated events taking place in both Westminster and the Senedd. In London, members of the UK Rainwater Management Association (UKRWA) convened at the Houses of Parliament for a high-level meeting with Lee Pitcher, MP for Doncaster East, who is spearheading […]
As experts in rainwater harvesting, we are thrilled to champion Water Reuse Week 2025, taking place from 15th to 21st September. This national campaign is all about empowering every organisation and household to rethink how we use water and seize simple yet powerful opportunities to save it. Why This Matters to You—and to Us Water […]
TCA7000 and TCA5000950 are both electronic rainwater harvesting top-up controllers designed to intelligently top-up your rainwater tank with mains water during dryer spells. Manufactured by 3P Technik UK. They both operate a conductivity sensor with no moving parts, top-up mains water via a solenoid valve, and can inhibit pump operation during top up. They do […]
Rainwater harvesting is a smart, sustainable way to reduce water bills and conserve resources, but ensuring a reliable water supply during dry spells can be a challenge. Enter the 3P TCA7000 RainForce Home Electronic Mains Cold Water Top-Up Controller—a cutting-edge solution designed to keep your rainwater harvesting system running smoothly. Whether you’re a homeowner looking […]
The new SuDS standards in England were published by the Department for Environment Food & Rural Affairs (DEFRA) on the 19th of June 2025. They are a welcome step in improving the management of surface water drainage and the pollution from water run-off in England. These non-statutory standards for Sustainable Drainage Systems (SuDS) are for […]
Both UK and International Stormwater Manufactured Treatment Devices are often certified under New Jersey’s stormwater treatment protocols and best practices, but who are NJDEP and NJCAT and what do they do? As the New Jersey Department of Environmental Protection (NJDEP) certification program for stormwater Manufactured Treatment Devices (MTDs) has evolved over the years, one issue […]
