The Stormwater Blog 

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

5 Key Concepts For Developing Local Stormwater Regulations

Drafting stormwater regulations that are clear, comprehensive and effective is crucial to protecting and preserving receiving waters.  The Clean Water Act has yielded a wide spectrum of local stormwater regulations and policies, but many leave something to be desired when it comes to actually mitigating the impacts of urban runoff.  It has been our experience that many local regulations are missing core components that are invaluable in achieving our ultimate goal.

Estimating the ROI of a Commercial Scale Rainwater Harvesting System

When you mention a commercial rainwater harvesting system (RWH) to an engineer, developer or owner, one of the first questions you get is “what’s the ROI?” Return on Investment and Net Present Value vary widely depending on specific project variables and there is no one correct answer.  The three largest factors impacting ROI are initial cost of the system, water utility savings, and the value of land space saved for a stormwater BMP.

A Look at the Full Costs of Surface Infiltration Systems
Mother Nature’s soil is the best of all urban stormwater Best Management Practices (BMPs). Soil infiltrates precipitation, reduces runoff, filters and captures most pollutants, recharges groundwater, and maintains a diverse, self-sustaining biological community.
Thinking Outside the Box: Infiltration System Layouts
Historically, underground infiltration beds have been laid out in either square or rectangular shapes, sometimes far away from where the actual rain drops fall. These large systems are typically fed by a series of upstream catch basins and conveyance pipes. Several factors contribute to site layout, but mostly it simplifies the hydrologic and hydraulic modeling process, and keeps infiltration beds away from more sensitive underground infrastructure.
Field 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 field testing.
Stormwater Policy Integration – Is it Getting Any Easier?
Stormwater policy is put in place to control non-point source pollution and is usually tied to the National Pollution Discharge Elimination System Permit (NPDES). Implementation tends to take a while – not for a lack of desire to protect our water resources, but because it is often challenging to integrate stormwater policy through the existing local political structure. Planning and zoning codes, public work drainage infrastructure requirements, and public health and safety standards (to name a few) can all potentially be affected by changes to stormwater policy.
24 Rainwater Harvesting Design Questions

These are the top 24 questions asked about Rainwater Harvesting Design after Part 1 of our Rainwater Harvesting Webinar Series: Rainwater Harvesting as a Runoff Reduction tool. You'll find questions like...

Where can I find local rainfall data for various areas?
What happens at the end of the life of the system?

3 Rainwater Harvesting Cost Questions

After the first part of our four-part Rainwater Harvesting webinar series, Rainwater Harvesting as a Runoff Reduction Tool, participants had the opportunity to ask our Rainwater Harvesting experts questions.

We didn't have enough time in the hour to answer all of the questions, so we are posting them here so that they are available to all.

These were the top 3 questions asked about Rainwater Harvesting Cost.

3 Rainwater Harvesting Regulation Questions
These are the top 3 questions asked about Rainwater Harvesting Regulations after Part 1 of our Rainwater Harvesting Webinar Series: Rainwater Harvesting as a Runoff Reduction tool. You'll find questions like...

Has Contech done an evaluation on the LEED points available for their various Rainwater products?
Is that information listed on their website?
5 Rainwater Harvesting Cistern Questions
These are the top 6 questions asked about Rainwater Harvesting Cisterns after Part 1 of our Rainwater Harvesting Webinar Series: Rainwater Harvesting as a Runoff Reduction tool. You'll find questions like...

How do cast-in-place concrete installations compare to precast for large applications?
Are the Steel Reinforced Polyethylene cisterns rated for potable use?
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