| A | B |
| Surface Water | It is fresh water that is above ground in lakes, ponds, rivers, and streams. |
| Watershed | The entire area of land that is drained by a river. |
| Dams | It is a structure built across a river or steream that prevents most of the water from traveling downstream. |
| Groundwater | Water that seeps down in this way and is stored underground. |
| Aquifers | Large amounts of groundwater that may be stored in underground in rock formations. |
| Recharge Zone | The area of land from which the groundwater originates. |
| Desalinization | The attempting to solve water shortages by removing the salt from salt water. |
| Towing Water | Water that is transported from one place to another. |
| Water Conservation | Attempting to limit the amount of water that is used. |
| Water Pollution | It is the introduction of chemical, physical, or biological material into water that degrades the quality of water and kills the animals in it. |
| Pathogens | Disease-causing organisms such as bacteria. |
| Organic Matter | Biodegradable remains of animals and plants, including feces. |
| Organic Chemicals | Pesticides, fertilizers, plastics, detergents, gasoline and oil, and other materials made from fossil fuels such as petroleum. |
| Inorganic Chemicals | Acids, salts, toxic metals; from both poin and nonpoint sources. |
| Toxic Chemicals | Chemicals that are poisonous to living things, including heavy metals, and many industrial, and some household, chemicals. |
| Physical Agents | Heat and suspended solids such as soil. |
| Radioactive Waste | From power plants or nuclear processing and defense facilities. |
| Point Pollution | It is pollution that is discharged from a single source, such as a wastewater treatment plant, or an oil tanker. |
| Nonpoing Pollution | It is pollution that comes from many sources rather than form a single specific site. |
| Wastewater Treatment Plants | It is where most of the wastewater from industrial and residential areas is collected. |
| Bioaccumulation | Biomagnification;It is when toxins are stored in the tissues of animals throughout the food chain. |
| Artificial Eutrophication | It is when inorganic plant nutrients such as phosphorus and nitrogen get into the water form sewage and fertilizer runoff. |
| Algal Blooms | Large mats of algae |
| Thermal Pollution | It is when excessive amounts of heat are added to a body of water. |
| The Safe Water Drinking Act | This act introduced programs to protect both groundwater and surface water from pollution. |