Ground-water-quality assessment of the central Oklahoma aquifer, Oklahoma - Analysis of available water-quality data through 1987
The water quality of the Central Oklahoma aquifer was assessed using the information available through 1987. The following conclusions were drawn from the available data and the contingency-table statistics. The word common is used to describe situations where approximately 10% or more of the data exceeded a water quality standard: (1) groundwater concentrations of nitrate and selenium commonly exceed the 10 mg/L maximum contaminant level (MCL) in most parts of the study unit except of depths > 300 ft in the Garber Sandstone and Wellington Formation; (2) groundwater concentrations of arsenic and chromium commonly exceed the 50 micrograms/L MCL at depths > 300 ft in the Garber Sandstone and Wellington Formation, but rarely exceed the MCL in the rest of the study unit; (3) no data were available for residual-alpha radioactivity for many parts of the study unit. In the data that were available, concentrations exceeded the MCL most frequently in groundwater samples from the Chase, Council Grove, and Admire Groups; (4) groundwater pH values commonly exceed 8.5 at depths > 300 ft in the Garber Sandstone and the Wellington Formation and in the Vanoss Formation; and (5) groundwater concentrations of sulfate and chloride commonly exceed the 250 mg/L secondary MCL (SMCL) in most parts of the study unit and concentrations greater than the SMCL are most common in groundwater from the Hennessey Group.
- OSTI ID:
- 6060002
- Resource Relation:
- Related Information: USGS Open-File Report 88-728
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
GROUND WATER
CONTAMINATION
OKLAHOMA
WATER POLLUTION
ARSENIC
CHLORIDES
CHROMIUM
DATA COMPILATION
ECOLOGICAL CONCENTRATION
GEOGRAPHICAL VARIATIONS
NITRATES
PH VALUE
SELENIUM
SULFATES
CHLORINE COMPOUNDS
DATA
ELEMENTS
FEDERAL REGION VI
HALIDES
HALOGEN COMPOUNDS
HYDROGEN COMPOUNDS
INFORMATION
METALS
NITROGEN COMPOUNDS
NORTH AMERICA
OXYGEN COMPOUNDS
POLLUTION
SEMIMETALS
SULFUR COMPOUNDS
TRANSITION ELEMENTS
USA
VARIATIONS
WATER
540320* - Environment
Aquatic- Chemicals Monitoring & Transport- (1990-)