2010 E-COLI COUNTS AT THE MUNICIPAL BEACHES, GENEVA LAKE WI
E.coli Counts at Geneva Lake Public Beaches - Period 1 2010
5/24/10 6/2/10 6/7/10 6/14/10 6/24/10 GeoMean Average
Williams Bay
WB1 West End 1 12 4 157 21 11.0 39.0
WB2 Swim Pier 3 5 2 236 26 11.3 54.4
WB3 Creek/Lake Mix 1 261 12 93 11 20,0 75.6
WB4 East of Creek 4 16 25 44 10 14.8 19.8
Fontana
F1 North End 2 9 6 30 4 6.6 10.2
F2 Guard Stand 7 4 1 101 9 7.6 24.4
F3 Swim Pier 7 9 12 32 6 10.8 13.2
F4 Abbey/Channel Mix 3 26 1 48 40 10.8 23.6
F4A South Beach 10 23 1 2 20 6.2 11.2
Linn Pier
LP1 Beach 1 9 16 9 15 7.2 10.0
Robinson Hillside
HR1 Hillside Creek 48 921 167 816 365 294.1 463.4
HR2 Lake/Creek Mix 9 30 32 291 37 39.2 79.8
HR3 Hillside Beach 2 18 2 10 5 5.1 7.4
Geneva Beach
LG 1 West End 1 >2419 13 14 50 9.8 19.5
LG 2 Swim Pier 3 >2419 15 26 26 13.2 17.5
LG 3 East End 2 >2419 24 54 18 14.7 24.5
Rain within 24 hrs 0 0 0.2 0.32 0
Source: GLEA & SLH 235 = Exceed Advisory Criteria Exceed Closing Criteria

E.coli Counts at Geneva Lake Public Beaches - Period 2, 2010
6/28/10 7/7/10 7/12/10 7/19/10 7/26/10 GeoMean Average
Williams Bay
WB1 West End 4 12 4 3 7 5 6
WB2 Swim Pier 2 10 17 18 3 7 10
WB3 Creek/Lake Mix 5 4 2 11 2 4 5
WB4 East of Creek NR 5 3 1 NR 2 3
Fontana
F1 North End 2 1 11 5 27 5 9
F2 Guard Stand 1 2 11 19 19 6 10
F3 Swim Pier 4 7 33 10 12 10 13
F4 Abbey/Channel Mix 31 12 42 35 2 16 24
F4A South Beach 3 3 10 7 10 6 7
for 6/28 samples F1 and F4 may be crossed.
Linn Pier
LP1 Beach 1 4 10 7 10 6 7
Robinson Hillside
HR1 Hillside Creek 261 345 613 291 1553 478 613
HR2 Lake/Creek Mix 99 96 186 26 479 117 177
HR3 Hillside Beach 4 3 1 56 18 7 17
Geneva Beach
LG 1 West End 10 6 20 17 12 12 13
LG 2 Swim Pier 17 10 12 37 9 15 17
LG 3 East End 8 19 34 649 28 39 148
Rain within 24 hrs 0 0.05 0 0 0
Source: GLEA & SLH 235 = Exceed Advisory Criteria 1000 = Exceed Closing Criteria

E.coli Counts at Geneva Lake Public Beaches - Period 3, 2010
8/2/10 8/9/10 8/16/10 8/23/10 8/30/10 9/8/10 GeoMean Average
Williams Bay
WB1 West End 98 10456 10 4 11 1 27.7 1763.3
WB2 Swim Pier 43 32 6 3 6 3 8.7 15.5
WB3 Creek/Lake Mix 77 52 1 1 44 1 7.5 29.3
WB4 East of Creek 23 50 5 1 26 12 11.0 19.5
Fontana
F1 North End 28 53 10 24 96 140 41.1 58.5
F2 Guard Stand 17 65 9 10 32 35 21.9 28.0
F3 Swim Pier 11 26 21 7 4 328 19.5 66.2
F4 Abbey/Channel Mix 39 18 118 488 13 548 81.3 204.0
F4A South Beach 1 93 6 4 2 12 6.1 19.7
for 6/28 samples F1 and F4 may be crossed.
Linn Pier
LP1 Beach 1 9 3 1 1 1 1.7 2.7
Robinson Hillside
HR1 Hillside Creek 520 2419 308 194 180 153 357.0 629.0
HR2 Lake/Creek Mix 390 488 261 2 11 33 57.5 197.5
HR3 Hillside Beach 37 131 11 9 4 3 13.4 32.5
Geneva Beach
LG 1 West End 12 78 1 2 16 4 7.0 18.8
LG 2 Swim Pier 5 22 17 83 18 7 16.4 25.3
LG 3 East End 32 23 13 13 5 2 10.4 14.7
Rain within 24 hrs 0.05 0.36 0 0 0
Source: GLEA & SLH 235 = Exceed Advisory Criteria 1000 = Exceed Closing Criteria

Yellow colored results indicate an individual exceedence of the advisory criteria of 235 colonies per 100 ml of sample. Red colored results indicate an individual exceedence of the closing criteria of 1000 colonies per 100 ml of sample. An orange color of the geomean results indicate an exceedence of the criteria for the geomean of not less than 5 samples collected in 30 day should not exceed 126 colonies per 100 ml.

Every attempt will be made to keep this site updated and posted with the most recent data when received from the State Lab of Hygiene.