Urban communities often have serious problems with stormwater drainage and the possible chemicals that will transfer from the streets to the water supplies. Finding solutions to these stormwater drainage problems has been the topic of much debate over the past few decades and can be seen indifferent efforts that focus on specific problems. Since stormwater drainage is related to the quality of water in an area, many local communities push their leaders in enacting new measures to keep their drinking and potable water supplies safe for the future.
When heavy storms hit a rural area, most of the water is absorbed into the ground or evaporates in to the air. While some runoff is expected in these areas, the stormwater drainage systems are much smaller in size and complexity since there will be less overflow. In an urban setting, much of the ground is covered by pavement or concrete, which is water resistant and absorbs only a small amount of the rainfall. Due to the amount of runoff, evaporation is also significantly reduced and will take a longer time since there is more water absorbing the heat. This can cause flooding for stormwater drainage systems, which will drag everything off of the street into the local water supplies.
To prevent debris and chemicals from entering stormwater drainage systems, there is a growing amount of filters that will remove particular substances from the runoff. Debris is trapped in areas before it can clog filtration systems and is removed by city workers regularly to reduce the amount of trash that flows into waterways. The filtration systems are designed specifically for an area depending on the type of property the drains are located around.
Since industrial and residential properties will have significantly different types of chemicals that can scatter the ground, it is important for stormwater drainage filtration systems to be properly suited to their locations. Industrial chemicals can be more volatile and hazardous to humans, and companies will often have internal cleaning measures to prevent these substances from entering water ways. Every filter is proven effective in reducing the amount of carbon in the water, and some can separate specific chemicals that are particularly hazardous. Residential stormwater drainage systems have the burden of trying to capture the many chemicals that are used for cosmetic and medical purposes. When both systems work together, the risk of polluting water supplies drops significantly and the quality of water in an area will improve over time.