The Stormwater Blog 

Contech Stormwater experts discussing Low Impact Development, Onsite Water Management, Rainwater Harvesting and all things Stormwater.

Innovation has become synonymous with the United States, serving as a catalyst for our economic growth and continuous improvement of our standard of living. Economics aside, if not for innovative scientific and technological breakthroughs we would be without countless apparatus, methodologies, and other discoveries that now serve as solutions to once daunting scientific and societal challenges. Faced with a growing list of water quality and other environmental quandaries, our ability to collectively innovate viable solutions has perhaps never been more crucial.
What’s Happening Inside My Tree Box Filter?
An appropriately designed and manufactured tree box filter combines the benefits of natural biofiltration with the reliable and predictable performance of an engineered system. Each tree box filter utilizes a multifaceted approach including physical, chemical and biological processes to capture, immobilize and treat harmful pollutants, while also encouraging low impact development practices by treating smaller drainage areas at the source.
Choosing a BMP - It's All About Maintenance
The task of selecting the proper stormwater BMP for your site can be tedious. There are thousands of choices; from drainage swales and silt fences to hydrodynamic separation and storm water filtration systems. All of them have their place in a well written BMP Plan, but none of them will work without maintenance.
Categories: Maintenance
Top 5 Commonly Missed Rainwater Harvesting Cistern Components
A rainwater harvesting cistern is comprised of many components. Our experience is that some of these components are often overlooked, which can negatively impact water quality. Here is our list of the top five commonly missed rainwater cistern components and why they are important .
Six Questions to Ask When Selecting a Stormwater Filter Media
During the past few years, a number of different filter media have been used for stormwater filtration. Media such as sand, peat, and compost have been used successfully. Recent uses of perlite, zeolite, carbon, and other “exotic” media have expanded the choices for targeting specific pollutants. Here are some questions you should ask when selecting the right media for your application.
What Does 80% TSS Removal Mean?
The intent of LEED Sustainable Sites Credit 6.2 is “to limit disruption and pollution of natural water flows by managing stormwater runoff,” and the requirements necessary for meeting this intent are clearly spelled out: capture 90% of the average annual rainfall and treat it by removing 80% of the total suspended solids (TSS). While the rating system does not define TSS it does recommend reliance on field monitoring data that is compliant with the Technology Acceptance Reciprocity Partnership (TARP) protocol or the Technology Acceptance Protocol-Ecology (TAPE) when screening stormwater best management practices (BMPs).
Stormwater Policy and the Triple Bottom Line – Are we doing what we need to protect water quality?
By now, you’ve probably heard of triple bottom line accounting, a full cost accounting approach considering the economic, environmental and social impacts of a decision or more poetically, the three P’s: people, planet and profit. In the stormwater infrastructure planning world, as in many other urban planning arenas, this approach is gaining popularity.
This short video explains how rainwater harvesting is a logical and feasible approach to managing stormwater runoff using example usage for a typical commercial office building.
What is Siphon-Actuated Filtration?
This patented technology is employed by the Stormwater Management StormFilter in order to prevent surface blinding, ensure use of all media, and prolong cartridge life. In principal, the system siphons stormwater runoff through its cartridge.
Categories: Filtration
Lab Testing Stormwater BMPs: The Pros & Cons
As an industry, we’ve acquired a vast amount of knowledge about stormwater, its adverse impacts and the best management practices (BMPs) implemented to mitigate them. However, the spirited debate with regard to whether the field or the laboratory is the best arena for evaluating BMP performance refuses to yield to consensus. Here are some of the arguments for and against laboratory testing...
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