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Freshwater Water Sampling Results: E.
coli
For graphs of this data, go here.
For map of sample sites, go here.
Water Quality Test: Membrane filtration (mTEC medium
+ urea method)
W = Webhannet River, P = Pope's Creek, D = Depot Brook,
B = Blacksmith Brook,
TNTC = too numerous to count, n.d. = no data
Higher number sites are further upstream.
Decimal figures are sometimes presented because two dilutions
were run and averaged, or a plate was counted twice for quality control
and the results were averaged.
E. coli results reported as CFU/100mL (colony forming units per 100mL of sample water)
| site |
average |
4-Dec-01 | 8-Jan-02 | 24-Jan-02 | 31-Jan-02 | 21-Feb-02 | 4-Mar-02 | 11-Mar-02 | 15-Apr-02 | 6-May-02 | 15-May-02 | 30-May-02 |
| W7 | 249.2 | 91.0 | 3.3 | 0.0 | 1.7 | 27.0 | 21.0 | 1.7 | 2335.0 | 8.2 | 480.0 | 21.0 |
| W6 | 94.3 | 67.0 | 12.5 | 0.0 | 3.3 | 78.0 | 62.0 | 77.0 | 515.0 | 17.3 | 300.0 | 0.0 |
| W5 | 218.7 | 128.0 | 11.7 | 1.7 | 4.2 | 80.0 | 61.0 | 100.0 | 1815.0 | 23.0 | 380.0 | 20.0 |
| W4 | 103.1 | 123.0 | 34.0 | 7.5 | 555.0 | 17.5 | 260.0 | 57.0 | 98.3 | 32.0 | 27.0 | 25.7 |
| W3 | 140.4 | 68.0 | 15.8 | 4.2 | 260.0 | 22.0 | 200.0 | 52.5 | 735.0 | 22.0 | 300.0 | 5.7 |
| W2 | 141.6 | 78.0 | 11.7 | 6.7 | 360.0 | 65.0 | 130.0 | 88.3 | 715.0 | 39.0 | 200.0 | 5.7 |
| W1 | 128.3 | 62.5 | 39.0 | 36.0 | 365.0 | 41.0 | 110.0 | 79.0 | 490.0 | 43.0 | 220.0 | 54.3 |
| P5 | 108.4 | 173.3 | 86.0 | 62.0 | 64.0 | 150.0 | 60.0 | 410.0 | 205.0 | 16.4 | 74.0 | 0.0 |
| P4 | 100.5 | 27.0 | 19.0 | 23.3 | 19.2 | 220.0 | 58.0 | 605.0 | 49.5 | 10.0 | 152.4 | 22.9 |
| P3 | 108.6 | 64.0 | 10.0 | 6.8 | 36.0 | 160.0 | 53.0 | 735.0 | 60.0 | 30.0 | no data | 40.0 |
| P2 | 161.5 | 70.0 | 37.0 | 44.1 | 36.0 | 115.0 | 46.0 | 795.0 | 175.0 | 44.0 | 150.0 | 425.7 |
| P1 | 83.4 | 32.0 | 28.0 | 65.0 | 19.0 | 185.0 | 44.0 | 195.0 | 110.0 | 48.0 | 189.1 | 85.7 |
| D5 | 14.2 | 8.0 | 1.7 | 0.8 | 0.8 | 10.8 | 2.0 | 24.0 | 7.5 | 21.0 | 54.0 | 40.0 |
| D4 | 18.0 | 14.0 | 2.5 | 2.5 | 9.5 | 32.0 | 7.5 | 16.7 | 24.0 | 37.5 | 51.0 | 19.0 |
| D3 | 65.2 | 176.0 | 24.0 | 7.5 | 40.0 | 150.0 | 31.0 | 23.0 | 215.0 | 20.0 | 76.0 | 20.0 |
| D2 | 99.9 | 354.5 | 185.0 | 27.0 | 33.0 | 245.0 | 22.0 | 37.0 | 235.0 | 17.3 | 40.0 | 2.9 |
| D1 | 110.1 | 148.0 | 155.0 | 6.7 | 29.0 | 490.0 | 30.0 | 21.0 | 390.0 | 9.1 | 28.0 | 14.3 |
| B4 | 54.5 | 25.0 | 1.0 | 0.0 | 9.0 | 160.0 | 8.0 | 2.0 | 387.5 | 2.4 | 52.0 | 7.0 |
| B3 | 35.2 | 14.0 | 0.0 | 0.0 | 6.0 | 33.0 | 9.0 | 2.0 | 279.0 | 1.8 | 75.0 | 2.0 |
| B2 | 28.0 | 1.0 | 0.0 | 0.0 | 15.0 | 25.0 | 4.0 | 0.0 | 206.0 | 0.0 | 80.0 | 4.5 |
| B1 | 16.1 | 4.0 | 5.0 | 0.0 | 12.0 | 14.0 | 6.0 | 1.0 | 43.5 | 3.6 | 54.0 | 50.0 |
To learn more or to volunteer, contact us:
Fred Dillon or
Cayce Dalton at
Wells National Estuarine Research Reserve
Phone: 207-646-1555, ext. 103
Fax: 207-646-2930
