Quality of ground water in Clark County, Washington, 1988

Book · Mon Jan 01 00:00:00 EST 1990

OSTI ID:6762343

Turney, G L ^[1]

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1. Geological Survey, Tacoma, WA (United States)

Water samples were collected from 76 wells throughout Clark County, in southwest Washington, during April and May 1988, and were analyzed from concentrations of major ions, silica, nitrate, phosphorus, aluminum, manganese, radon, and bacteria. Samples from 20 wells were analyzed for concentrations of trace elements and organic compounds, including most of those on the US Environmental Protection Agency (USEPA) priority pollutant list. Dissolved solids concentrations range from 12 to 245 mg/L, with a median concentration of 132 mg/L. The major dissolved constituents are calcium, bicarbonate, and silica, and, in some samples, sodium. Nitrate concentrations exceeded 1.0 mg/L throughout the Vancouver urban area, and were as large as 6.7 mg/L. Comparison with limited historical data indicates that nitrate concentrations were somewhat correlated, possibly indicating similar sources. Volatile organic compound, including tetrachloroethane and 1,1,1-trichloroethane, were detected in samples from three wells in the Vancouver area. Trace amounts of volatile organic compounds were reported in samples from several other wells, but at concentrations too close to analytical detection limits to ascertain that they were in the groundwater. Trace elements and radiochemical constituents were present at small levels indicating natural sources for these constituents. Only pH, turbidity, iron, manganese, and total coliform bacteria had values that did not meet USEPA Drinking Water Standards.

• OSTI ID: 6762343
• Resource Relation: Related Information: USGS Water-Resources Investigations Report 90-4149
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
GROUND WATER
CONTAMINATION
WASHINGTON
WATER POLLUTION
ACID CARBONATES
ALUMINIUM
BACTERIA
CALCIUM
CHLORINATED ALIPHATIC HYDROCARBONS
IRON
MANGANESE
MONITORING
NITRATES
PHOSPHATES
RADON
RURAL AREAS
SILICON OXIDES
SODIUM
SULFATES
TRACE AMOUNTS
URBAN AREAS
ALKALI METALS
ALKALINE EARTH METALS
CHALCOGENIDES
DEVELOPED COUNTRIES
ELEMENTS
FEDERAL REGION X
FLUIDS
GASES
HALOGENATED ALIPHATIC HYDROCARBONS
HYDROGEN COMPOUNDS
METALS
MICROORGANISMS
NITROGEN COMPOUNDS
NONMETALS
NORTH AMERICA
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHOSPHORUS COMPOUNDS
POLLUTION
RARE GASES
SILICON COMPOUNDS
SULFUR COMPOUNDS
TRANSITION ELEMENTS
USA
WATER
540320* - Environment
Aquatic- Chemicals Monitoring & Transport- (1990-)
540330 - Environment
Aquatic- Radioactive Materials Monitoring & Transport- (1990-)