2,900
3,800
7490
54,750
60
102
1.5
5
0.3
12
360
9
65
Max value
0.4
0.2
0.1
0
39*
IOWATER Field
Kit
mg/L
Orthophosphorus
180
120
120
80
39*
Field Test Strip
mg/L
Total Alkalinity
4300
1730
550
79
Field Kit
CFU/100 ml
Total Coliform Bacteria Easygel
768
100
80
Field Kit
CFU/100 ml
E. Coli Bacteria Easygel
8
7.5
7
6.4
80
IOWATER
Test Strip
pH units
pH
10
8
6
3.5
80
IOWATER Field
Kit
mg/L
Dissolved Oxygen
465
290
175
50
39*
Lab Analysis
CFU/100 ml
E. Coli Bacteria
705
350
220
50
39*
Lab Analysis
CFU/100 ml
Fecal Bacteria
54
38
25
12.5
60
IOWATER
Transparency Tube
Centimeters
Transparency
31
25
39*
IOWATER
Test Strip
mg/L
Chloride
5
2
2
0
39*
IOWATER
Test Strip
mg/L
Nitrate-N
0.15
0.1
0
0
39*
IOWATER
Test Strip
mg/L
Nitrite-N
59
57
55
36
79
Thermometer – Field
Degrees F
Water Temperature
% Detection
75th 
percentile
50th 
percentile
25th 
percentile
Min Value
# of Samples
Method
Unit
Scott County Snapshot Sampling Results – May 20, 2003.
mg/L = milligrams per liter (or parts per million – ppm); CFU/100 ml = Colony Forming Units per 100 milliliters of water
* Sampled only at non-Davenport Pollution Control Agency’s long-term monitoring sites.