stormwater directive Articles

  • Stormwater treatment area 3/4

    Restore the Everglades That's the task the Florida Legislature set for the South Florida Water Management District. But how? Decades of development had eliminated the sheet flow of water from Lake Okeechobee. Densely populated cities and a 700,000-acre agricultural area, drained by 1,500 miles of canals and levees, now lay between the lake and the Everglades. Wetlands have disappeared. ...


    By Burns & McDonnell

  • A Comprehesive Approach to Performance Verification for Stormwater Treatment Systems

    In recent years, there have been several attempts to standardize field testing protocols to address the difficulty of comparing the performance of different stormwater treatment technologies tested under disparate field conditions and protocols. Following these protocols will enable a direct evaluation of a particular best management practice’s (BMP) ability to capture a specific pollutant load ...


  • Influences on the establishment and dominance of vegetation in stormwater infiltration basins

    Infiltration basins are widely used in urban environments as a technique for managing and reducing the volume of stormwater. These basins can be spontaneously colonized by wild plants, which can be used as bioindicators of edaphic characteristics. As the basins are anthropogenic environments, the description of plant biodiversity allows the determination of which species colonize such ...


    By IWA Publishing

  • Improving sediment removal in standard stormwater sumps

    Standard sumps are an important component of our stormwater drainage system. Recently they have received significant attention as a stormwater pre-treatment device to remove sediment from stormwater runoff. The objective of this research is to explore some simple structures to be installed inside standard sumps to improve sediment removal efficiency. A number of structures were tested and two ...


    By IWA Publishing

  • Stormwater nitrogen removal performance of a floating treatment wetland

    The nitrogen (N) removal efficiency and effluent quality of two parallel stormwater retention ponds, one retrofitted with a floating treatment wetland (FTW) and one without any vegetation, was compared in a field trial. This study shows that inclusion of FTWs in stormwater retention ponds has potential to moderately improve N removal. Median FTW outlet event mean concentrations (EMCs) were lower ...


    By IWA Publishing

  • How to Plan Stormwater Management for Urban Areas

    Water is a vital commodity in our lives, but it is possible to have too much water all at once in our lives, especially following violent storms or snow melt. This excess water, lying on the ground, swelling rivers, canals and drains to over-capacity is known as stormwater. In order to make the best use of this water, local authorities need to safely contain stormwater while any ...


    By Liquivault

  • Preliminary investigation into the pollution reduction performance of swales used in a stormwater treatment train

    Permeable pavements have been shown to be effective stormwater treatment devices that can greatly reduce surface runoff and significantly improve the quality of stormwater runoff in urban areas. However, the potential problems with sediment clogging and consequent maintenance requirements have been identified as the main barriers to more widespread adoption of permeable pavements in urban ...


    By IWA Publishing

  • The world`s largest stormwater alum treatment facility - in Florida

    Stormwater in the Florida canal system is slow moving.  The green, murky water in the lakes fed by the Apopka-Beauclair canal is caused by an overabundance of algae-feeding compounds, mainly phosphorus, resulting in chronic algal blooms.  The Nutrient Reduction Facility (NuRF) project designed a system to inject aluminum sulface (alum) into the nutrient-laden water in direct proportion ...


    By SRS Crisafulli, Inc.

  • Micropollutants in stormwater runoff and combined sewer overflow in the Copenhagen area, Denmark

    Stormwater runoff contains a broad range of micropollutants. In Europe a number of these substances are regulated through the Water Framework Directive, which establishes Environmental Quality Standards (EQSs) for surface waters. Knowledge about discharge of these substances through stormwater runoff and combined sewer overflows (CSOs) is essential to ensure compliance with the EQSs. Results from ...


    By IWA Publishing

  • Rain to Recreation: Making the Case for a Stormwater Capital Recovery Fee

    ABSTRACTLenexa’s Rain to Recreation Program has a three-fold mission (1) reduce flooding, (2) improve water quality, preserve the environment and open space and (3) provide for new recreational and educational opportunities in the undeveloped portion of the city. To support the Program’s watershed based “systems” approach to stormwater management a diversified ...

  • Stormwater retention basin efficiency regarding micropollutant loads and ecotoxicity

    Retention basin efficiency in micropollutant removal has not been very well studied, in particular for pollutants highlighted by the European Water Framework Directive of 2000 such as pesticides, polybrominated diphenyl ethers (PBDEs) and alkylphenols. This study is based on in situ experiments carried out on a stormwater retention basin with the aim of estimating the basin efficiency in ...


    By IWA Publishing

  • What makes the InfoWorks CS Simulation Engine the best of breed for wastewater and stormwater modelling?

    Untitled Document Modeling software is only as good as its simulation engine. But the engine is the least ...


    By Innovyze

  • Integrated conceptual modelling of faecal contamination in an urban estuary catchment

    Urban stormwater is regarded as a key input of faecal contamination in receiving water bodies and therefore, a major concern for health risks associated with aquatic recreation. Wastewater leakages, cross connections and overflows, together with faeces washed from surfaces during rainfall events, are possible origins of faecal contamination which enter these water bodies through stormwater ...


    By IWA Publishing

  • Porous pavement technology

    Porous pavement systems address environmental issues, such as aesthetics and permeability, while providing needed support for a wide variety of loading requirements. From heavy emergency vehicles to pedestrian foot traffic, porous pavement applications range from fire access lanes to utility roads, trails, walkways, and other high use areas. Porous systems are designed to handle the most ...


    By Presto Geosystems

  • Grasspave2 vs Asphalt Paving Cost Comparison

    Economic Considerations - Grasspave2 paving is competitive with asphalt paving, and has a lower life cycle cost due to low maintenance costs and no need for surface replacement (if new grass is needed, just reseed). Asphalt paving requires resealing every 2 to 4 years, and resurfacing every 8 to 15 years, depending upon traffic and climate. Grasspave2 may not require any ...


    By Invisible Structures, Inc.

  • Grasspave2 and Gravelpave2 vs Asphalt Paving Maintenance

    Economic Considerations - Grasspave2 and Gravelpave2 porous paving is competitive with asphalt paving, and has a lower life cycle cost due to low maintenance costs and no need for surface replacement (if new grass is needed, just reseed). Asphalt paving requires resealing every 2 to 4 years, and resurfacing every 8 to 15 years, depending upon traffic weight and volume, and climate. ...


    By Invisible Structures, Inc.

  • How a LEED Platinum Building is Cleaning up Inland Empire Urban Runoff

    ABSTRACTIn 2002, the Inland Empire Utility Agency (IEUA) – a municipal water agency in western San Bernardino County - designed and constructed its new Headquarters with the goal of attaining the first 2.0 platinum level “LEED” - Leadership in Energy and Environmental Design - rating established by the U. S. Green Building Council.” IEUA has implemented a BMP project that truly showcases the ...

  • A flexible modelling environment for integrated urban water harvesting and re-use

    The steady increase of urban population and the possible effects of climate change that may adversely affect the amount of water available in current water supply systems, makes the study of stormwater and rainwater harvesting and wastewater recycling a high priority. The basic proposition is that any system of water supply that can reduce the amount of water drawn from main reservoirs will be of ...


    By IWA Publishing

  • A Comparison of Two Media Filtration BMP Treatments for the Removal of PAHS and Phthalates from Roadway Runoff

    Urban runoff is a major contributor to the degradation of our urban streams, rivers, and lakes (Pitt, 1995). Organic pollutants, such as PAHs and phthalates, in urban stormwater can contribute to receiving water degradation (EPA, 1983). A study in Rhode Island’s Narragansett Bay watershed found that urban runoff accounted for 71 percent of the total inputs to the bay for higher molecular weight ...


  • Developing a public information and engagement portal of urban waterways with real-time monitoring and modeling

    Waterways can contribute to the beauty and livelihood of urban areas, but maintaining their hydro-ecosystem health is challenging because they are often recipients of contaminated water from stormwater runoff and other discharges. Public awareness of local waterways’ health and community impacts to these waterways is usually poor due to of lack of easily available information. To improve ...


    By IWA Publishing

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