Freshwater Pollution and Water Quality

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Last updated 5:06 PM on 6/7/26
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18 Terms

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Nonpoint Source Pollution

A widely spread source of pollution that cannot be tied to a specific point of origin

<p>A widely spread source of pollution that cannot be tied to a specific point of origin</p>
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Pesticides

Chemical used on crops to kill insects

<p>Chemical used on crops to kill insects</p>
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Point Source Pollution

A specific source of pollution that can be identified, such as a leaking pipe

<p>A specific source of pollution that can be identified, such as a leaking pipe</p>
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Pollutants

Any material that can harm living things by interfering with life processes

<p>Any material that can harm living things by interfering with life processes</p>
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Runoff Pollution

When pollutants are washed off surfaces and into waterways, including groundwater, streams, lakes, oceans, etc.

<p>When pollutants are washed off surfaces and into waterways, including groundwater, streams, lakes, oceans, etc.</p>
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Sediment

Soil carried into waterways, can reduce sunlight and hurt aquatic life

<p>Soil carried into waterways, can reduce sunlight and hurt aquatic life</p>
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Toxic Chemicals

Gasoline, oil, pesticides; can harm aquatic life

<p>Gasoline, oil, pesticides; can harm aquatic life</p>
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Nutrients

From fertilizer runoff; Causes overgrowth of algae in waterways that harms aquatic life

<p>From fertilizer runoff; Causes overgrowth of algae in waterways that harms aquatic life</p>
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Pathogens

Bacteria from human and animal waste; cause disease

<p>Bacteria from human and animal waste; cause disease</p>
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Fertilizers

Used on farm crops; runoff into waterways causes algae

<p>Used on farm crops; runoff into waterways causes algae</p>
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Pollution

Release of harmful materials into the environment

<p>Release of harmful materials into the environment</p>
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Water Quality

the most important abiotic factor.

<p>the most important abiotic factor.</p>
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Dissolved Oxygen

the amount of oxygen in the water

<p>the amount of oxygen in the water</p>
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Turbidity

A measure of how clear water is.

<p>A measure of how clear water is.</p>
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Phosphate

a natural mineral containing chemical compounds often used in fertilizers

<p>a natural mineral containing chemical compounds often used in fertilizers</p>
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Salinity

the amount of salt in water

<p>the amount of salt in water</p>
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Nitrate

Found in fertilizers.

<p>Found in fertilizers.</p>
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Macroinvertebrate Organisms

Organisms that lack a spine and are large enough to be seen with the naked eye. (Examples include flatworms, crayfish, snails, clams and insects, such as dragonflies.)

<p>Organisms that lack a spine and are large enough to be seen with the naked eye. (Examples include flatworms, crayfish, snails, clams and insects, such as dragonflies.)</p>