Villa Park 7
Illinois State Water Survey
Located in DuPage County, Illinois, this groundwater monitoring location is associated with a water well in the Cambrian-Ordovician aquifer system.
Well Construction
| Depth | Description | |
|---|---|---|
| - ft | none casing | |
| - ft | none screen |
| Depth | Lithology | Description |
|---|---|---|
| 0.0-64.0 ft | unknown | glacial drift |
| 64.0-140.0 ft | unknown | Silurian Dolomite |
| 140.0-175.0 ft | unknown | Silurian Dolomite |
| 175.0-390.0 ft | unknown | Maquoketa Shale |
| 390.0-620.0 ft | unknown | Galena-Platteville |
| 620.0-720.0 ft | unknown | Galena-Platteville |
| 720.0-830.0 ft | unknown | Glenwood-St. Peter Sandstone |
| 830.0-1000.0 ft | unknown | St. Peter Sandstone |
| 1000.0-1040.0 ft | unknown | Oneota Dolomite |
| 1040.0-1133.0 ft | unknown | Dolomite, cherty, slightly sandy, some shale, |
| 1133.0-1215.0 ft | unknown | Franconia Formation |
| 1215.0-1380.0 ft | unknown | Ironton-Galesville Sandstone |
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Agency Illinois State Water Survey Site Name Villa Park 7 Site Number P404870 Site Type WELL Lat/Long (WGS84) 41.9, -87.9807 Well Depth 1420 Feet Elevation (NAVD88) 700.97 ft Latitude 41.899966 Longitude -87.980712 Local Aquifer Name St. Peter and Ironton-Galesville Sandstones (None) National Aquifer Name Cambrian-Ordovician aquifer system (S300CAMORD) Aquifer Type CONFINED Water-Level Well Type Trend Water-Level Well Characteristics Known Changes Water Quality Network Additional info Link 1 -
Activity Start Date Activity Start Time Characteristic Name Measure Value Units Detection Limit Value Type Sample Fraction Method Name Analytical Method System Sample Method ID Sample Method ID Context Sample Method Name Activity Type Code Data Provided By -
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How do we calculate statistics?
Overall Water Level Statistics (Depth to water, feet below land surface) Lowest Water Level Median Water Level Highest Water Level First Measurement Date Last Measurement Date Number of Measurements Years of Record Latest Value Latest Percentile 895.00 537.81 527.56 1961-07-01 2025-11-17 4418 64.3 535.18 Statistics Calculated 2025-12-28 Monthly Water Level Statistics (Depth to water, feet below land surface) Month Lowest Median 10th Percentile 25th Percentile 50th Percentile 75th Percentile 90th Percentile Highest Median Number of Measurements Years of Record -
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