This structure is a barrier that runs across a river or stream to control the flow of water.

This old method of irrigation involves the digging of trenches for water

Two-thirds of this substance produced by human activities comes the burning of fossil fuels, especially coal

This large container for collecting wastewater may be under the yard of your home.

This legislation supports the "protection and propagation of fish, shellfish, and wildlife and recreation in and on the water"

The Mississippi has the most of these structures, which are built up along the side of a river to prevent flooding.

In what country is one-third of all freshwater used for salinization?

This commonly used flame retardant has been found in fish, birds, and human breastmilk, and has been linked to childhood brain damage

The goal of this treatment step in a sewage plant is to allow the solid waste material to settle out of the wastewater before it's dried

In the United States, laws and regulations prohibit the use of this type of water that could flush your toilet, but is too unclean to drink?

This structure makes dams less damaging to aquatic species

This method of irrigation involves the pumping of water into an apparatus that contains a series of spray nozzles

This pollutant contaminated the water of Flint, Michigan.

The overflow of these human-made ponds lined with rubber can lead to disease outbreaks in humans and animals

These have were established by the Safe Drinking Water Act for 77 different elements or substances

This process often used in extremely arid regions with little access to water involves a heating element and condensing coil

This method of irrigation, in addition to being a sustainable alternative to traditional irrigation methods, yield vegetables that have proven to be considered tastier

When this substance was banned, bald eagle and other birds of prey increased in numbers, as their eggshells survived incubation

Even after treatment, these two inorganic nutrients often end up entering waterways and increasing the abundance of algae

The Clean Water Act does not protect what type of water?

When this dam flooded, it destroyed over a thousand villages and forced 1.3 million people to relocate.

This method of irrigation has proven to prevent weed growth, as the surface soil remains dry.

This compound used to be used in the embalming process, and can cause various cancers

What chemical is added to water during tertiary treatment to remove coloration and kill bacteria

This law, passed in 1948, was expanded and became the Clean Water Act