| A | B |
| Surface Water | Water in rivers and lakes |
| Ground Water | Water that fills the cracks and spaces in underground soil and rock layers |
| Imported Water | Water that originates in one area and delivered to a different area some distance away |
| Reclaimed Water | Recycled used wastewater that has been treated to make it safe for certain uses |
| Desalination | The process of removing salt from seawater |
| Overdrafting | When more water is pumped out or drawn from a water source than is replaced by rainfall and runoff |
| Potable Water | Water that is safe to drink |
| HCF | Hundred Cubic Feet |
| Acre foot | The volume of water sufficient to cover an acre of land to a depth of 1 foot |
| Primary Standards | Water quality standards that apply to contaminants in drinking water that can have health consequences |
| Secondary Standards | Water quality standards that apply to contaminants that may have aesthetic or cosmetic effects on drinking water |
| PPM | Parts per million |
| PPB | Parts per billion |
| MCL | Maximum Contaminant Level |
| Nitrates | Compounds from fertilizers and manure that can interfere with the bloods ability to transport oxygen |
| Pathogen | A disease causing organism |
| Hardness | The amount of dissolved minerals in the water |
| Coagulation | The process by which particles in a liquid clump together: a step in drinking water treatment |
| Sedimentation | The process of slowing water down in the treatment process to allow sediments to settle out |
| Filtration | The process of passing water through layers of sand, gravel and charcoal to remove impurities from water |