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Clean Water

Clean Water

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On this page:

Why Clean Water is a Priority
Assessing Water quality
Pollution
The Water Supply
How You can Help

More about clean water:

Streamside Plantings
Water Conservation
Rainwater Management
Flowing Water
Water On Plant
Tualatin River Wildlife Refuge

Photo Credit: J. Maughn

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Why Clean Water Is a Priority

Every living thing on Earth relies on clean and abundant water.

  • Fun fact:

    The Tualatin River Watershed contains about 900 miles of waterways that support human lives, local economies, and wildlife.

The Tualatin River is Washington County’s primary source of drinking water, irrigation water, and water for industrial and domestic uses.

Once known as Oregon’s most polluted river, the Tualatin River’s water quality has improved since the 1980s. Maintaining this progress requires continuous effort by residents, businesses, and resource managers.

Washington County is a diverse area consisting of farms, forests, and urban communities. No matter where you live within the watershed, each of us can help keep our waterways clean and flowing.

Tanwave

Water quality is assessed by looking at the following factors:

  • Sediment

    Sediment is a naturally occurring element of nature, but large quantities of it in water can block sunlight from reaching aquatic plants that require sun to photosynthesize. Sediment can also carry pollutants that attach to the surface of fine dirt particles.

  • Heat

    Heat is a form of pollution that harms fish and other lifeforms. Water can be warmed naturally by the sun, but temperature can also be negatively affected by human activity, such as removing vegetation from streambanks or creating barriers that slow the flow of the water.

  • Nutrients

    Nutrients are chemicals that fuel plant and animal life. Too many nutrients in waterways can cause an explosion of growth resulting in harmful algal blooms and eutrophicationAn excessive amount of nutrients in a body of water which causes a dense growth of plant life and deprives aquatic animals of oxygen.. Nitrogen and phosphorus are common pollutants because they are the main ingredients of fertilizer.

  • Bacteria

    Bacteria, such as E. coli, are found in animal and human waste and can cause severe illness and toxic algae. Bacteria can make their way into water sources from livestock operations or degraded septic systems.

  • Dissolved oxygen

    Dissolved oxygen is a measurement of the amount of oxygen present in a body of water. Just like terrestrialGrowing or living on land, as opposed to air or water. plants and animals, aquatic organisms need to breathe oxygen. Low levels of dissolved oxygen are an indicator of poor water quality.

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Where does pollution come from?

Pollution is categorized into two groups based on its source. The methods for controlling each group are unique and present very different challenges.

  • Point source

    Point source pollution comes from a precise location, such as a pipe that releases waste products from a factory into a body of water. This type of pollution is controlled with a permit system established under the Clean Water Act. Businesses that need to dispose of waste pay a fee to purchase the “right” to release a specific amount of pollution.

  • Non-point source

    Non-point source pollution comes from a general area, but it is difficult to determine its exact origin. Examples: rainwater from dirty roads or fertilizer that runs off a field.

We primarily target non-point source pollution. Some ways to reduce it:

  • Minimizing chemical use
  • Planting trees and shrubs along streams
  • Installing drip-irrigation systems
  • Keeping livestock out of waterways
  • Installing rain gardens
  • Avoiding harvesting trees along streams or on steep slopes

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The water supply:

Everyone is directly affected by our water supply’s accessibility and cost.

Having either too much or too little water can impact farming, residential infrastructure, and stream health.

Water shortages cause hardship for:

  • Farmers who must irrigate crops
  • Families that lack a steady supply of clean drinking water
  • Outdoor enthusiasts recreating in or around water
  • Fish that live in streams, and wildlife that depends on fish for food

On the other hand, flooding results in:

  • Stream bank erosion
  • Damaged buildings
  • Pollutants entering waterways

Human activities throughout the watershed, including increased development and certain farming and forestry practices, have combined to create higher peak flows The maximum volume of water flowing during a storm event. that arrive faster and with more force, leading to the degradation of streams.

It is critical we work together as a community to ensure that our water supply meets the needs of humans and wildlife. We can do this by managing our natural resources and the areas we live in, in ways that don’t worsen flooding.

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You can help protect water quality and abundance in the Tualatin River Watershed:

  • Practice conserving water
    Water Conservation
  • Explore ways to manage rainwater and prevent runoff on your property
    Rainwater Management
  • Plant and maintain vegetation along streams
    Streamside plantings
  • Research the Tualatin River Watershed Agricultural Water Quality Management Area Plan
    View PDF

More About Clean Water:

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The Tualatin River headwaters are located in Coast Range mountains.

Where Do We Get Our Water?

January 21, 2021
The slow-moving waters of the Tualatin River provide a great opportunity for paddlers to enjoy the scenery and search for wildlife.

Tualatin River is Designated a National Water Trail

January 19, 2021

Clean Water Project:

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Newly planted native grasses will provide food and habitat for pollinators.

Wingham Farms Stream Project

Going big for conservation! Daniel and Julie Lee, owners of Wingham Farms, are protecting 31 acres of land adjacent to...
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Tualatin Soil and Water
Conservation District
7175 NE Evergreen Pkwy #400
Hillsboro, OR. 97124

Phone: 503-334-2288
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