Wastewater Treatment Plants, Iowa, 1994

Abstract:

Permitted municipal, industrial, and semi-public waste water treatment facilities in Iowa.

Purpose:

This digital, geographically referenced data set was developed by the Iowa Department of Natural Resources to carry out agency responsibilities related to management, protection, and development of Iowa's natural resources.

Supplemental_Information:

This coverage was developed with data from the DNR's National Pollutant Discharge System.

This section shows information about this dataset's attributes
Attributes Range Median Mean Std. Dev.
Popl Equiv
0.00  to  96707.00
86.00 2075.05 8337.83
Number of people the plant is designed to support.
Design Bod
0.00  to  336000.00
17.00 1477.33 12276.07
Designed biological oxygen demand of the plant (lbs/day).
Treatment Text column (no statistics available)
Method of waste water treatment.
Name Text column (no statistics available)
Facility name
Perimeter
0.00  to  0.00
0.00 0.00 0.00
Perimeter
Cbod Disch Text column (no statistics available)
Outfall number
Cbod Year
0.00  to  2000.00
0.00 168.10 554.87
Year containing month of highest average BOD.
Locmeth Text column (no statistics available)
Method used to determine UTM coordinates for facility and outfall locations. Legal Desc: A legal description to the section. Quad Map: Derived from a location on the 1:24,000 USGS topographic maps. Landsat: Derived from lagoons visible on Landsat images. Locator Maps: Derived from returned 1:24,000 section maps that were sent to the facilities along with their permit renewal forms.
Code
0.00  to  5.00
3.00 2.20 1.24
1: Municipal 2: Water Treatment 3: Industrial 4: Semi-Public 5: Stormwater
State Text column (no statistics available)
Facility identification number assigned by Iowa DNR
Flow Year
0.00  to  2000.00
0.00 199.11 598.74
Year containing month of highest average inflow.
Route To C Text column (no statistics available)
Route of flow from outfall to classified receiving stream.
Stream Class Text column (no statistics available)
STREAM_CLASS: A: Human contact (Primary contact, recreation) BW: Old designation for warm water resource BC: Old designation for cold water resource C: Human consumption (source of drinking water) HQ: High Quality HQR: High Quality Resource BWW: Significant resource (warm water aquatic life) BLR: Limited resource (warm water aquatic life) BLW: Wetland resource (warm water aquatic life) BCW: Cold water resource
Major Text column (no statistics available)
Y: Facility is a Major facility N: Facility is a Minor facility
Wwtp
1.00  to  3544.00
1773.00 1772.50 1023.21
Sequential numbers equal to WWTP
Flow Month
0.00  to  12.00
0.00 0.50 1.62
Month of highest average inflow during previous 12 months.
Epa Text column (no statistics available)
Facility identification number assigned by EPA
Cbod5
0.00  to  220527.00
0.00 248.42 4515.67
Highest monthly average BOD (lbs/day) for previous 12 months.
Outfall De Text column (no statistics available)
Description of discharge type.
Flow Disch Text column (no statistics available)
Outfall numberNone
Area
0.00  to  0.00
0.00 0.00 0.00
Area
Flow
0.00  to  906.00
0.00 0.72 17.54
Highest monthly average inflow (Million Gallons/day) for previous 12 months.
Classified Text column (no statistics available)
Classified receiving stream.
Design Flo
0.00  to  9.41
0.01 0.27 0.99
Maximum flow capacity of the plant (Million Gallons per day)
Ofnum
0.00  to  82.00
0.00 0.97 3.14
Outfall number. If 0, it is the plant location.
Wwtp
1.00  to  3544.00
1773.00 1772.50 1023.21
Sequential numbers assigned by PC ARC.
Update
0.00  to  2000.00
0.00 458.94 840.59
Month and Year that the most recent locator map was received from the facility.
Inact Code Text column (no statistics available)
Indicates whether or not the facility is still active. A: Active I: Inactive
Sic Code Text column (no statistics available)
Standard Industrial Code assigned by Dept. of Commerce.
Cbod Month
0.00  to  12.00
0.00 0.45 1.80
Month of highest average BOD during previous 12 months.