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Groundwater Contamination (Nitrate and Coliform) in the Lower Yakima Valley

Nitrate

Nitrate in Drinking Water:  http://www.doh.wa.gov/ehp/dw/Publications/331-214_2-21-07.pdf
Nitrato en el Agua Potable:  http://www.doh.wa.gov/ehp/dw/Publications/331-214_spanish_3-7-07.pdf

Nitrates-The Single Family Well: http://www.bfhd.wa.gov/forms/brochures/nitrates.pdf
Nitratos-Los Pozos de Agua: http://www.bfhd.wa.gov/forms/brochures/nitrates-sp.pdf

Nitrate in Drinking Water

Distribution of Elevated Nitrate Concentrations in Groundwater in Washington State

Coliform Bacteria

Public Health Advisory: http://www.doh.wa.gov/ehp/dw/Coliform/331-179.pdf
Advertencia de Salud Pública: http://www.doh.wa.gov/ehp/dw/Publications/331-179s.pdf

Coliform Bacteria and Drinking Water: http://www.doh.wa.gov/ehp/dw/Publications/331-181_11-29-07.pdf

Coliform Sampling Procedure: http://www.doh.wa.gov/ehp/dw/Publications/331-225_11-30-07.pdf

Coliform-The Single Family Well: http://www.bfhd.wa.gov/forms/brochures/coliforms.pdf
Las Bacterias Coliformes-Los Pozos de Agua: http://www.bfhd.wa.gov/forms/brochures/coliforms-sp.pdf

Additional Information

Yakima Herald series:

• A Test of Wells, A Test of Trust in the Lower Valley http://www.yakima-herald.com/stories/2009/02/19/a-test-of-wells-a-test-of-trust-in-lower-valley
• Dirty Water: http://yakimaherald.com/dirtywater

Distribution of Elevated Nitrate Concentrations in Ground Water in Washington State
U.S. GEOLOGICAL SURVEY   Fact Sheet 2008–3063 - http://pubs.usgs.gov/fs/2008/3063

“Effect of Agricultural Practices on Hydrology and Water Chemistry in a Small Irrigated Catchment, Yakima River Basin, Washington"
http://pubs.usgs.gov/sir/2009/5030/

Important information for private well owners: http://www.ecy.wa.gov/pubs/0611021.pdf

Well Caps-Problems and Solutions: http://www.ecy.wa.gov/pubs/96br098.pdf

Surface Seals-Problems and Solutions: http://www.ecy.wa.gov/pubs/96br099.pdf

Abandoned Wells-Problems and Solutions: http://www.ecy.wa.gov/pubs/96br097.pdf

Maintaining Septic Systems:
Yakima Health District: http://www.yakimacounty.us/health/eh/wwprojects.htm
Washington Department of Health: https://fortress.wa.gov/doh/here/materials/PDFs/24_SepTank_E04L.pdf
WSU Extension: http://cru.cahe.wsu.edu/CEPublications/eb1671/eb1671.pdf

Possible Sources of Funding

Section 504 Repair Program for low-income, occupant-owned houses:

Contact:

USDA Rural Development
1606 Perry Street, Suite D
Yakima, WA 98902
509.454.5743