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Drains that have a better filter system so pollutant don't get into the main rivers.

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Sand filters can, apart from being used in water treatment plants, be used for water purification in singular households as they use materials which are available for most people.

Eli H

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Andy C.

Water pollution can be helped by the application of coverings (Tarps, roofs, etc.) to anything stored outside and exposed to rain and/or runoff, as the covers can prevent stormwater from getting contaminated.

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An infiltration basin is basically a dip in a green area that allows the water to have more permeable surface area to infiltrate through the soil and recharge the groundwater. These can be a range of sizes.

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Allison Shore
Detention Ponds allow stormwater runoff to replace already present pond water. Pond water will flow out and the new water will be stored in the pond until the next storm. This allows pollutants in the runoff to settle.

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Nick

Rain barrels are typically connected to gutter downspouts and collect the runoff from roofs. Screens filter out leaves and mosquitoes.

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Emma Sheets
- Uses vegetation strips to provide barriers of protection which protect potential pollutants from running off into the surface waters. They reduce soil erosion and intercept sediment and nutrients.

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Kate O'Boyle
Water quality inlets are also known as oil/grease separators. These separators remove sediments, oils and greases from parking lots prior to discharge to the storm drain or infiltration basin.

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Constructed wetlands are treatment systems that use natural processes involving wetland vegetation, soils, and their associated microbial assemblages to improve water quality.

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An infiltration trench is a rock-filled trench with no outlet that receives stormwater runoff. Runoff is stored in the void space between the stones and infiltrates through the bottom and into the soil matrix.

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A small areas located in city centers, or wherever possible, that are grassy, with soil layers containing humus, detritus, and layers that support the grass or trees above.

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Brooke Evans
They temporarily detain rainstorms. They use a small outlet that keeps runoff from having pollution. Contain items such as concrete forbay, trickle channel, micropool, and an outlet structure with orifice plate.

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A strip of planted land in-between an area potential pollutants and a water body that receives runoff from that area. These locations are filled with either planted or indigenous vegetation.

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Dry detention basins, also known as dry ponds, are designed to hold stormwater runoff and slowly release volumes of runoff to decrease stormwater peaks. This method helps ensure water quantity, especially during major storms.

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Lauren Potteiger
Rain gardens are small gardens in urban areas landscaped with native plants. Their purpose is to catch rainwater runoff from impervious surfaces and allows it to soak in the ground.

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Arowyn Casenhiser
Cisterns are systems that collect rainwater into an above ground or underground storage area to supply water to a household. They are particularly practical where groundwater is often unavailable for use, but rainwater is easily accessible.

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Emma Meyer
A grass swale is a stable turf, parabolic or trapezoidal channel used for water quality or to convey stormwater runoff

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stormwater landscaping enhanced water garden residential highway street treatment water quality

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Coston Autry
By including areas like parks within cities (e.g. central park in NYC), one can effectively provide an area in which infiltration can occur in greater amounts. The permeable surfaces within green spaces allow for a greater recharge rate of groundwater whereas the impermeable surfaces of the surrounding urban area may not.

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T. Jones

Allows water to infiltrate into the soil below instead of running off.  This decreases pollutants (e.g., oil, litter, etc.) that could be carried into the stream during storm events and decreases stream water volumes during storm events.

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Pervious Concrete at UNH Stormwater Center