E.coli bacteria/100 mL of water. Each value is the geometric mean of five samples. A geometric mean of 100 or less is considered acceptable according to Province of Ontario standards.
| date | Amberley | Ashfield | Kintail | Port Albert | Bogies | Sunset |
| 2005-06-01 | 18 | 15 | 10 | 10 | 10 | |
| 2005-06-09 | 10 | 14 | 16 | 10 | 10 | |
| 2005-06-15 | 373 | 531 | 217 | 105 | 300 | |
| 2005-06-22 | 48 | 36 | 211 | 80 | 40 | |
| 2005-06-29 | 30 | 28 | 369 | 56 | 11 | 11 |
| 2005-07-06 | 20 | 33 | 57 | 20 | 11 | 10 |
| 2005-07-07 | 10 | 12 | 163 | |||
| 2005-07-13 | 17 | 10 | 10 | 11 | 10 | 10 |
| 2005-07-14 | 11 | 13 | 10 | |||
| 2005-07-20 | 271 | 58 | 211 | 14 | 25 | 42 |
| 2005-07-21 | 91 | 66 | 20 | |||
| 2005-07-27 | 271 | 88 | 505 | 396 | 270 | 254 |
| 2005-07-28 | 34 | 48 | 202 | |||
| 2005-08-03 | 39 | 67 | 55 | 29 | 14 | 10 |
| 2005-08-04 | 400 | 1612 | 13 | |||
| 2005-08-10 | 490 | 569 | 132 | 448 | 227 | 24 |
| 2005-08-11 | 313 | 54 | 149 | |||
| 2005-08-17 | 42 | 175 | 180 | 107 | 15 | 12 |
| 2005-08-18 | 14 | 110 | 108 | |||
| 2005-08-24 | 33 | 24 | 13 | 61 | 11 | 10 |
| 2005-08-25 | 38 | 47 | 11 | |||
| 2005-08-31 | 361 | 48 | 136 | 10 | 218 | 11 |
| 2005-09-01 | 86 | 121 | 16 | |||
| The following use all five samples taken on all dates. | ||||||
| number | 115 | 115 | 50 | 115 | 70 | 70 |
| minimum | 10 | 10 | 10 | 10 | 10 | 10 |
| geo.mean | 59 | 58 | 94 | 45 | 31 | 22 |
| average | 138 | 184 | 173 | 117 | 76 | 55 |
| maximum | 590 | 2500 | 640 | 680 | 340 | 400 |
| >100 | 37% | 30% | 58% | 34% | 27% | 14% |