Charles River Monthly Water Quality Sampling Data 2008

Escherichia Coli (E. coli) Bacteria (#/100 mL)


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Site #

Description

Town

River mile
1/15/08*
2/12/08*
3/18/2008
4/15/2008
5/20/2008
6/24/2008
7/15/2008
8/19/2009
9/16/2008
10/14/2008
11/18/08
12/16/08
35CS   Central Street Bridge Milford 3.5     52 216 388 2250 907 173 98 249   148
35CD (b) Discharge Pipe @ Central St Milford 3.5                        
35C2 (b) 2nd Discharge Pipe @ Central St Milford 3.5                        
59CS Mellen St. Bridge Bellingham/Milford/
Hopedale
5.9     86 74 146 3610 464 313 148 294 63 985
90CS Rt. 126, N. Main St. Bellingham 9.0     20 20   97 171 171 121 74 41 19900
130S Maple St. Bridge Bellingham 12.9     10 31 (a) <10 145 145 145 211 41 52 3870
165S Shaw St. Bridge Franklin/Medway 16.5     20 10 52.5 (a) 173 187 97 109 74 10 1520
199S Populatic Pond Boat Launch Norfolk 19.9       20 41 41(a) 52 122 84   52  
229S Rt. 115, Baltimore St. Norfolk/Millis 22.9     <10 31 52 110 10(a) 74 110 10 74  
267S Dwight St. Bridge Millis/Medfield 26.7     <10 30 209 10 20 69.5(a) 74 10 63 2400
269T Causeway St. Stop River Medfield 26.9     10 <10 98 134 354 96 262 108(a) 20 187
290S Old Bridge St. Medfield/Millis 29.0     10 (a)     84 41 107 128.5(a) 31    
318S Rt. 27 Bridge Medfield/Sherborn 31.8     <10 <10 47(a) 74 20 86 85 31 30(a) 2100
343S Farm Rd./Bridge St. Sherborn/Dover 34.3     <10 12.5 (a) 10 41   109 74 20 20 1445(a)
387S Cheney Bridge Wellesley/Natick 38.7     <10 31 41 1540 465 63 41 63 20 1500
400S Charles River Road Bridge Dover/Wellesley 40.0     41 41 41 2010 155(a) 85 52   41 1060
447S Dover Gage Dover 44.7     <10 15 (a) 62 52 72 86(a) 61 10    
484S Dedham Medical Center Dedham/Needham  48.4     10 <10 31 108 301 41 41(a) <10 20 1270
521S Ames St. Bridge Dedham 52.1     10 10 20 197 52 122 110 5(a) 63 960
534S Rt. 109 Bridge Dedham/Boston 53.4     <10 10   226 2360 85 110 31 10 1005(a)
567S Nahanton Park Newton/Needham 56.7     10   31(a) 20 108 31   61 64.5(a) 723
591S Rt. 9 Gauging Station Newton 59.1     <10 20 63 6870 169.5(a) 31 183 41 96 932
609S Washington St. Hunnewell Bridge Wellesley/Newton 60.9     <10 31 63 2545(a) 563 122 201 10 109 1050
621S Leo J. Martin Golf Course/Park Rd. Weston/Newton 62.1     <10 10 52 2220 650 194(a) 95 10 97 733
635S 2391 Commonwealth Ave. Newton 63.5     10 <10 63 3650 240 216 210.5(a) 364 98 428
648S Lakes Region Waltham 64.8        30.5 (a) 63 3450 20 120 175 103(a)    
662S Moody St. Bridge Waltham 66.2     7.5 (a) 52 30 563 47.4(a) 84 134 52 132 285(a)
675S North St.  Waltham/Newton 67.6     <10 52 98 2480 309 134 216 41 173(a) 408
012S Watertown Dam Footbridge Watertown 69.3     233 31 134 2610 161 134 108 41 63 262
700S N. Beacon St. Watertown/Brighton 70.9       132 98(a) 5170 97 197 199 31 301 402
715S Arsenal St. Watertown/Brighton 71.5     410 97 97 7640(a) 98 146 292 146 228 437
729S Eliot Bridge Cambridge/Boston 72.9     457 120 314 9210 347.5 (a)   292 173 169 404
743S Western Ave Cambridge/Boston 74.3     323 132 41 1050   199 383 110 530 504
760T Muddy River at Comm. Ave. Boston 76.0     413 97 238   464 873(a) 441 495 637 24200
763S Mass. Ave. at Harvard Bridge Boston/Cambridge 76.3     309 644     20 201 272   563 2610
773S Longfellow Bridge Boston/Cambridge 77.3     613 723 471 20 <10 74 295 495 681(a) 323
784S New Charles River Dam Boston/Cambridge 78.4     627 364 74 25.5(a) 62 63 31 145 145 1450(a)
QA/QC Samples                        
  Equipment Blank         <10 <1 <1 <1 <1 <1 <1 <1 <1 <1
  Site No.         662S 35CS 59CS 90CS 130S 165S 012S 267S 387S 400S
  Equipment Blank           <1 <1     <1   <1   <1
  Site No.           609S 635S     700S   715S   743S
Rainfall At Logan International Airport (inches)                      
  3 Days Prior to Sampling         0.31 0.45 0.44 0.00 0.00 Trace 0.00 0.00 0.47 0.00
  2 Days Prior to Sampling         Trace 0.01 Trace Trace 0.00 0.00 0.35 0.00 0.37 0.00
  1 Day Prior to Sampling         0.00 0.00 0.00 0.46 0.07 0.00 0.00 0.00 0.00 0.00
  Day of Sampling         Trace 0.00 Trace 0.78(b) 0.00 0.01 0.00 0.00 0.00 0.02

Samples are analyzed at MWRA Central Laboratory.

* Event cancelled due to inclement weather
(a) Average of duplicates 
(b) Rain fell after the sampling event

                       

 

                     
 
 

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