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Definition
| Water system where force of gravity moves water. Typically water storage tank should be at least 70' above distribution area. |
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Definition
| Flow of fluid thru porous material like sand/gravel. Velocity proportional to slope or hydraulic gradient. |
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| Portion of watershed most likely to contribute sediment to a stream channel. |
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| source of current and future drinking water- protected from pollution |
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Definition
| degree which ground causes contaminants to attenuate before reaching a wellhead. |
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| Contaminant transport model |
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Definition
| used to check concentration of groundwater contamination. |
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Term
| Nitrogen loading analysis |
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Definition
| A key variable that influences amount of nitrogen found in water supply. |
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Definition
| 2nd major step in wastewater treatment process where bacteria consumes organic parts of the waste |
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Definition
| private sewage treatment facility |
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Definition
| wastewater treatment method that pre-treats effleunt by filtering it thru sand before sending it on to a treatment system. |
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Definition
| wastewater that does not contain human excrement. typical grey water is sink drainage, bath water, & washing machine discharge |
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Definition
| storage of waste oils & other potentially harmful liquids & provide extra storage capacity for materials that may leak into primary storage container. |
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Definition
| to straighten water corridor so it can move more rapily |
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Definition
| foreign material in water caused by heavy rains, spills, leaks etc. |
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Definition
| system that intercepts stormwater runoff and temporarily holds water for gradual release into a stream or storm sewer system |
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Definition
| system that retains/holds stormwater runoff in a defined area until the surrounding soil can accept it. |
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Definition
| plastic rings in a flexible grid that are placed on a base of blended sand, gravel & topsoil. They provide a load bearing pervious surface to filter pollutants from stormwater |
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Definition
| an ordinance established to regulate & manage stormwater drainage |
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Definition
| a graph showing the level of storm water discharge into a stream. |
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