|
|
Table
1. Summary
of detected pesticides from stations in the STORET database, 1973-93
[--, no data available; mg/L, micrograms per liter; concentrations
in red exceed aquatic life or human health criteria]
|
| Pesticide |
Number
of
detections/
samples |
Percentage
of
detections |
Maximum
concentration
(mg/L) |
Aquatic
criteria
(mg/L) |
Lifetime
HAL1
(mg/L) |
MCL1
(mg/L) |
Minimum
reporting
level
(mg/L) |
|
|
Herbicides
|
|
| Simetone |
15/15 |
100
|
0.10
|
--
|
--
|
--
|
0.10
|
| 2,4-D |
39/115 |
34
|
12
|
--
|
70
|
70
|
0.050
|
| 2,4-DP |
12/57 |
21
|
0.12
|
--
|
--
|
--
|
0.010
|
| 2,4,5-T |
5/94 |
5
|
4.5
|
--
|
70
|
--
|
0.010
|
| 2,4,5-TP
(Silvex) |
3/111 |
3
|
0.01
|
--
|
50
|
50
|
0.025
|
|
|
Insecticides
|
|
| DDE |
1/46 |
2.2
|
0.01
|
--
|
--
|
--
|
0.010
|
| Pentachlorophenol |
2/157 |
1.3
|
4
|
213
|
--
|
1
|
4
|
| Chlordane |
3/349 |
0.9
|
2
|
20.004
|
--
|
2
|
0.10
|
| Parathion |
6/846 |
0.7
|
0.10
|
20.013
|
--
|
--
|
0.10
|
| Phosdrin |
5/817 |
0.6
|
0.1
|
--
|
--
|
--
|
0.10
|
| Trithion |
5/821 |
0.6
|
0.1
|
--
|
--
|
--
|
0.10
|
| Ethion |
5/846 |
0.6
|
0.1
|
--
|
--
|
--
|
0.10
|
| Guthion |
4/843 |
0.5
|
0.1
|
20.01
|
--
|
--
|
0.10
|
| Malathion |
4/845 |
0.5
|
0.1
|
20.1
|
200
|
--
|
0.10
|
| Diazinon |
4/846 |
0.5
|
0.1
|
30.009
|
0.6
|
--
|
0.10
|
| Dieldrin |
4/1008 |
0.4
|
0.05
|
20.0019
|
--
|
--
|
0.010
|
| Alpha
endosulfan |
1/255 |
0.4
|
0.05
|
20.056
|
--
|
--
|
0.05
|
| Methoxychlor |
2/561 |
0.4
|
0.1
|
20.03
|
40
|
40
|
0.05
|
| o,p-DDT |
3/900 |
0.3
|
0.11
|
20.001
|
--
|
--
|
0.05
|
| p,p-DDT |
3/926 |
0.3
|
0.22
|
20.001
|
--
|
--
|
0.05
|
| Mirex |
1/345 |
0.3
|
0.1
|
20.001
|
--
|
--
|
0.05
|
| Lindane |
3/1096 |
0.3
|
0.42
|
20.08
|
0.2
|
0.2
|
0.01
|
| o,p-DDD |
2/901 |
0.2
|
0.12
|
--
|
--
|
--
|
0.05
|
| Toxaphene |
2/1005 |
0.2
|
2
|
20.0002
|
--
|
3
|
0.05
|
| p,p-DDD |
1/926 |
0.1
|
0.05
|
--
|
--
|
--
|
0.05
|
| p,p-DDE |
1/928 |
0.1
|
1.7
|
--
|
--
|
--
|
0.05
|
| Heptachlor
epoxide |
1/995 |
0.1
|
0.01
|
20.0038
|
--
|
--
|
0.01
|
| Aldrin |
1/1009 |
0.1
|
0.01
|
--
|
--
|
--
|
0.1/0.01
|
1HAL,
health advisory level; MCL, maximum contaminant level (U.S. Environmental
Protection Agency, 1996).
2Freshwater chronic water-quality criteria (U.S. Environmental
Protection Agency, 1997).
3Freshwater chronic water-quality criteria recommendations
from National Academy of Sciences and National Academy of Engineers
(1973), modified from Nowell and Resek (1994).
|
Back to the Pesticide Fact Sheet
|
USGS South Carolina Publications • South Carolina Water Science Center
U.S. Department of the Interior |
U.S. Geological Survey