Water Testing Results
Summer 1998

Merrimack and Souhegan Rivers
E-Coli Bacteria in Colonies per 100 ml. of Sample

Water Sampling Dates
Location 6/2/98 6/16/98 6/30/98 7/14/98 7/28/98 8/11/98 8/25/98 9/8/98

Souhegan River Sites
Wilton
Stoney Brook above Wilton
140.7 246.5 48 15.3 33 93 24.5 140.7
Amherst
Beaver Brook
N/A N/A N/A N/A N/A 360 210 220

New Ipswich
River Road above Water Loom Pond
164 256 13 20 64 30 40 79
Greenville
Above Greenville Mill Pond
41.3 314.7 30.7 7.3 12 58 19 45.5
Greenville
Green Bridge off Route 31 below Greenville WWTP
318.7 296.7 47.3 34.7 130.5 140 50.5 198.5
Wilton
Below Captain Clark Bridge
37.3 273.5 36 25 13.5 44 43.5 21.5
Wilton
Below the Horseshoe
70 206.7 N/A 4 25.5 97 10 44
Milford
Pine Valley Mill
148.5 310 163 36 116 60 151.5 398.5
Milford
Emerson Park
224 136 150 110 70 140 140 60
Milford
Swing Bridge
210 248 160 310 N/A 170 270 70
Milford
Behind Riverside Cemetery
262 216 260 160 60 90 160 80
Milford
Behind Video Update next to Shaw's
250 200 220 190 110 130 210 110
Amherst
Conservation land on Fairway Road
336 252 380 230 140 90 160 260
Amherst
Boston Post Road Bridge
362 274 N/A 140 130 120 110 150
Merrimack
Indian Ledges, Davidson Road
203 307 65 59 119 100 46 21
Merrimack
Turkey Hill Bridge
203 280 118 44 86 70 18 69


Merrimack River Sites

Goffs Falls 69 37 102 12 68 30 5 <1
Depot Street 95 45 N/A <4 68 N/A 7 15
Upstream of Souhegan River N/A N/A N/A 9 92 80 14 119
Thornton's Ferry N/A 123 89 31 83 90 6 319
Greeley Park 175 640 109 130 40 20 N/A N/A
Taylors Falls Bridge >400 640 140 40 15 10 10 25
Sagamore Bridge >400 840 260 260 60 20 5 >200
Sanders Parking Lot >400 1020 480 170 15 5 10 75
Upstream of Tyngsboro Bridge >400 920 N/A 150 45 40 10 28
Flints Pond Brook, Tyngsboro N/A 1200 N/A <10 290 N/A N/A N/A

Notes:

 


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