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Estuary 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,
WE = Webhannet Estuary, TNTC = too numerous to count, n.d.
= no data
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 | 15-Jun-02 | 20-Jun-02 | 18-Jul-02 | 16-Aug-02 | 27-Aug-02 | 3-Sep-02 | 12-Sep-02 | 18-Sep-02 | 23-Sep-02 |
| W1 | 382.2 | 510.0 | 189.1 | 58.0 | 47.3 | 1380.0 | 300.0 | 220.0 | 205.0 | 530.0 |
| WE01 | 209.8 | n.d. | 158.0 | 18.0 | 26.7 | 30.0 | 33.3 | 410.0 | 102.0 | 900.0 |
| WE02 | 119.7 | n.d. | 50.0 | 44.0 | 160.0 | 15.0 | 25.0 | 100.0 | 13.6 | 550.0 |
| WE03 | 129.1 | 650.0 | 210.0 | 24.0 | 17.3 | 6.0 | 48.0 | 28.3 | 25.0 | 153.3 |
| WE04 | 101.3 | 620.0 | 134.0 | 8.0 | 33.3 | 40.0 | 28.3 | 8.2 | 5.0 | 35.0 |
| WE05 | 92.4 | 390.0 | 210.0 | 10.0 | 40.0 | 2.0 | 80.0 | 46.0 | 2.0 | 52.0 |
| P1 | 491.9 | 1500.0 | 210.0 | 20.0 | 460.0 | 143.6 | no data | 320.0 | 171.7 | 1110.0 |
| WE06 | 414.9 | 1700.0 | 30.0 | 90.0 | 98.0 | 21.7 | 1290.0 | 56.0 | 33.3 | >2000 |
| D1 | 645.2 | 740.0 | 0.9 | 500.0 | 1040.0 | 72.0 | 198.3 | 290.0 | >2000 | 2320.0 |
| WE07 | 263.8 | 720.0 | 158.3 | 290.0 | 180.0 | 3.3 | 580.0 | 10.0 | 168.3 | >2000 |
| B1 | 283.2 | 270.0 | 31.8 | 52.0 | 76.0 | 140.9 | 152.0 | 46.0 | 340.0 | 1440.0 |
| WE08 | 554.7 | 4800.0 | 40.0 | 10.0 | 13.3 | 8.0 | 13.3 | 54.0 | 15.0 | 38.3 |
| WE09 | 91.4 | 108.0 | 68.0 | 2.0 | 8.3 | 0.0 | 30.0 | 8.3 | 18.3 | 580.0 |
| WE10 | 16.7 | 113.0 | 3.3 | 0.0 | 1.7 | 0.0 | 26.0 | 2.0 | 0.0 | 4.0 |
| WE11 | 97.9 | 770.0 | 1.7 | 0.0 | 58.0 | 6.0 | 8.0 | 36.7 | 1.0 | 0.0 |
| WE12 | 39.7 | 250.0 | 0.9 | 2.0 | 6.7 | 1.7 | 51.0 | 26.7 | 10.0 | 8.3 |
| WE13 | 8.7 | 26.7 | 0.0 | 0.0 | 8.3 | 2.0 | 16.0 | 24.0 | 0.0 | 1.0 |
| WE14 | 10.5 | 23.6 | 3.3 | 2.0 | 54.0 | 0.0 | 4.0 | 1.7 | 4.0 | 1.7 |
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
