Posts Tagged ‘water quality’
Stormwater – A Watershed Plan for Green Infrastructure
The Rain Garden at Chicago Center for Green Technology
Stormwater Mitigation Presentation at the Chicago Center for Green Technology
I had the pleasure of presenting “A Watershed Plan for Green Infrastructute” at the Chicago Center for Green Technology (CCGT) on Thursday, May 22nd. The audience realized that stormwater is everyone’s problem and, over the years we have polluted our waterways beyond what most of us realize.
Our current development techniques disrupt the natural hydrologic cycle. Filtration is the key to cleaning our stormwater. Keeping rainfall on-site is the least expensive and most effective method to improving our environment
The highlight of the presentation was when Bryan Glosik, of the Chicago Center for Green Technology, led a tour of the sophisticated and natural stormwater management system at CCGT. Bryan did an excellent job of explaining the effectiveness of the rain gardens in mitigating the local stormwater problem.
Here is a copy of the presentation:
Bryan Glosik, Chicago Center for Green Technology, Chicago, Illinois
Comments
Here are comments and feedback about the presentation:
Filtration is key. Water run off disrupt the water cycle. Keeping water in your yard is important.– Stephen Meyer
The video was great.
The outside tour was my favorite part.
I like the combination of field trip, short video, lecture and case study.– Armando Median Jr.
What can a small homeowner do?– David Lindstrom
There are small things that I can do that will make a difference.– Maureen McCabe
Related articles across the web
Where have all the Fish Gone?
By Kari Bedi and Tom Barrett
Did you know 40% of our fresh waterways are impaired (i.e. polluted)?
This means the water is too dirty for swimming, fishing or drinking. Plants, animals, and fish are disappearing from many rivers, lakes, and coastal waters. A waterway is impaired If it does not meet water quality standards of the Clean Water Act and the state. This means the waterway is polluted. The information is confusing but the problem is real. The problem is local as well as national. The problem will not go away without action.
Unintended Consequences of Our Unconscious Use of Resources
- Ocean acidification – due to carbon emissions from burning fossil fuels
- Overfishing
- Warming water temperatures
- Deoxygenation – due to run-off of fertilizers and sewage
- Pollution – soil, nitrates, pesticides, toxic chemicals
- Siltation/Erosion – which can add to toxic algae growth in rivers and lakes
In nature there is no good; there is no evil; there are only consequences.”
Ohio
Toxic algae bloom from stormwater runoff
Toxic algae blooms are flourishing under warming water temperatures and contaminated stormwater runoff. Growing evidence suggests toxins, which are colorless, odorless, and water soluble, may remain present in water bodies long after algae blooms have vanished; and more alarmingly, algae toxins potentially could become airborne. In September, an Ohio county faced a cyanobacteria contamination of their water system that forced the water supplier to warn customers not to drink water from the tap.
Florida
The Tide is Turning Toward Resiliency with Green Infrastructure
Chicago, Illinois
Non-point source pollution from agricultural runoff.
Philadelphia, Pennsylvania
Groveland, Massachusetts
What We Know for Iowa
Sewage overflow outlet
For Iowa, soil erosion is the number one source of surface water pollution. The movement of soil into water supplies is called siltation. Erosion easily occurs when bare land is left to be exposed to wind or heavy rains. Primary sources of unprotected soil include agriculture, road ditches, and construction/building sites. Of course, along with the soil comes the pollutants in the soil that load stormwater runoff with nutrient-rich feces and various toxic chemicals.
Collaborating on Conscious Solutions for Water Improvement
Elements of Green Infrastructure
- Native grasses and filter strips – dense root systems of native plantings help hold soil in place, filters out pollutants, improves absorption rate, and slows runoff
- Bioswales – a drainage course with gently sloped sides designed to slow stormwater flow to trap silt and pollutants
- Urban tree canopy – intercepts rainfall, reducing surface runoff
- Greenstructure – urban green spaces designed for cleaner air and water, recreational and educational opportunities, and natural habitat networks
- Permeable pavement – pervious materials that help control stormwater at the source, reduce runoff and provide filtration
- Constructed and natural wetlands – act as a biofilter, removing sediments and pollutants
- Green roofs – a form of low impact development, offers many benefits including stormwater management, improved air quality, and energy efficiency
- Green alleys – incorporate permeable pavements, open bottom catch basins, high-albedo pavement to reflect sunlight and help reduce the urban heat island effect, and dark sky-compliant light fixtures to reduce light pollution
A bioswale creates a more natural approach to stormwater mitigation.
By weaving these natural processes into the built environment, green infrastructure offers both economical and ecological benefits to stormwater management. Not to mention further benefits including: flood mitigation, improved air quality, and support for local and regional biodiversity – supporting the return of fish populations.
Anthropogenic influences – like that from population growth, the energy industry, manufactured products, mining, transportation, and agricultural practices – have had a severe impact on biodiversity and water quality worldwide.”
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How Safe is Your Drinking Water?
Water Quality
At many of my presentations I am frequently asked, “Is my drinking water safe?” I generally answer yes but you need to do the research. Potable water quality across the United States is excellent. However not always and, quite frankly, it depends on your specific location and the time of the year.
Time of the Year
Why does time of the year matter. Well in parts of the country farming operations affect the quality of our drinking water. During the Spring, in Indiana, the Indiana Department of Environmental Management estimates over eighty percent of the drinking water has excessive levels of atrazine in drinking water.
For over fifty years, farmers rely on atrazine to control weeds in corn, sorghum and sugar cane. Atrazine is a highly effective herbicide. The level of allowable atrazine in our drinking water is a highly controversial topic.
Check Out Your Water Quality
The United States Environmental Protection Agency (EPA) has released an updated version of their Enforcement & Compliance History Online (ECHO). Check out your water quality here.