Lower Farmington River 2016 E.coli levels

Postings of the E.coli levels will let you know more about the status of the river. The numbers in the chart below indicate a sample. The duplicates show you that 2 samples taken at the same time from the same location can have a very different measured level. Remember a sample is just that, a sample. At the end of the year the FRWA can calculate a geometric mean. Right now you can see how the numbers change depending on factors such as heavy rain increasing pollutant runoff, etc. Click here to see the FRWA’s Water Quality Map and for photos of the sites.

E. coli is not considered safe in drinking water at any levels; however the current standards for recreational use levels of E.coli are posted by the CT DEEP as follows. There are no “designated swimming” areas in the Lower Farmington River. Use this as a guide for understanding the numbers in the chart below.

Recreation Geometric Mean Single Sample Maximum
Designated Swimming less than 126/100ml 235/100ml
Non-designated Swimming less than 126/100ml 410/100ml
All Other Recreational Uses less than 126/100ml 576/100ml

 2016 E.coli Chart

AVON

 Site NumberStream NameCollection DateE.coli colonies/100 mL
TB-A1Thompson Brook5/31/20161450
TB-A1Thompson Brook6/13/201620
TB-A1Thompson Brook6/27/201652
TB-A1Thompson Brook7/18/201610
TB-A1Thompson Brook8/1/2016121
TB-A1Thompson Brook8/15/2016148
NB-A1Nod Brook5/31/2016305
NB-A1Nod Brook6/13/2016158
NB-A1Nod Brook6/27/2016285
NB-A1Nod Brook7/18/2016216
NB-A1Nod Brook8/1/2016647
NB-A1Nod Brook8/15/2016233

BURLINGTON

 Site NumberStream NameCollection DateE.coli colonies/100 mL
BB-B1Bunnell Brook6/6/20161722
BB-B1Bunnell Brook6/20/2016145
BB-B1Bunnell Brook7/11/2016158
BB-B1Bunnell Brook7/25/2016265
BB-B1Bunnell Brook8/8/201696
BB-B1Bunnell Brook8/22/20162310

CANTON

 Site NumberStream NameCollection DateE.coli colonies/100 mL
CB-C1Cherry Brook6/6/20164611
CB-C1Cherry Brook6/20/201651
CB-C1Cherry Brook7/11/16355
CB-C1Cherry Brook7/25/16538
CB-C1Cherry Brook8/8/20161785
CB-C1Cherry Brook8/22/20162603

EAST GRANBY

 Site NumberStream NameCollection DateE.coli colonies/100 mL
FR-EG1Farmington River6/6/20163255
FR-EG1Farmington River6/20/201652
FR-EG1Farmington River7/11/2016218
FR-EG1Farmington River7/25/2016110
FR-EG1Farmington River8/8/201631
FR-EG1Farmington River8/22/2016279

FARMINGTON

 Site NumberStream NameCollection DateE.coli colonies/100 mL
RO-F1Roaring Brook6/6/20161334
RO-F1Roaring Brook6/20/201641
RO-F1Roaring Brook7/11/2016134
RO-F1Roaring Brook7/25/2016213
RO-F1Roaring Brook8/8/2016171
RO-F1Roaring Brook8/22/2016435
FR-F1Farmington River6/6/2016988
FR-F1Farmington River6/20/201631
FR-F1Farmington River7/11/201620
FR-F1Farmington River7/25/201631
FR-F1Farmington River8/8/201620
FR-F1Farmington River8/22/2016122
PR-F1Pequabuck River6/6/201612033
PR-F1Pequabuck River6/20/2016171
PR-F1Pequabuck River7/11/2016292
PR-F1Pequabuck River7/25/2016183
PR-F1Pequabuck River8/8/2016145
PR-F1Pequabuck River8/22/201614136
FR-F2Farmington River6/6/20165475
FR-F2Farmington River6/20/201630
FR-F2Farmington River7/11/201641
FR-F2Farmington River7/25/201630
FR-F2Farmington River8/8/201698
FR-F2Farmington River8/22/20166354
FR-F3Farmington River6/6/20163873
FR-F3Farmington River6/20/2016122
FR-F3Farmington River7/11/201674
FR-F3Farmington River7/25/2016160
FR-F3Farmington River8/8/201663
FR-F3Farmington River8/22/20164352

SIMSBURY

 Site NumberStream NameCollection DateE.coli colonies/100 mL
MB-S1Munnisunk Brook5/31/201663
MB-S1Munnisunk Brook6/13/201631
MB-S1Munnisunk Brook6/27/201652
MB-S1Munnisunk Brook7/18/2016110
MB-S1Munnisunk Brook8/1/201686
MB-S1Munnisunk Brook8/15/201686
MS-S1Minister Brook5/31/2016158
MS-S1Minister Brook6/13/2016134
MS-S1Minister Brook6/27/201697
MS-S1Minister Brook7/18/2016169
MS-S1Minister Brook8/1/2016776
MS-S1Minister Brook8/15/2016183
RB-S1Russell Brook5/31/2016156
RB-S1Russell Brook6/13/201631
RB-S1Russell Brook6/27/201663
RB-S1Russell Brook7/18/2016132
RB-S1Russell Brook8/1/20162359
RB-S1Russell Brook8/15/2016228
FR-S1Farmington River5/31/2016399
FR-S1Farmington River6/13/201652
FR-S1Farmington River6/27/201631
FR-S1Farmington River7/18/201652
FR-S1Farmington River8/1/2016175
FR-S1Farmington River8/15/201609
FR-S3Farmington River5/31/2016213
FR-S3Farmington River6/13/201685
FR-S3Farmington River6/27/201662
FR-S3Farmington River7/18/201686
FR-S3Farmington River8/1/2016146
FR-S3Farmington River8/15/2016108
HB-S1Hop Brook5/31/2016279
HB-S1Hop Brook6/13/201673
HB-S1Hop Brook6/27/2016187
HB-S1Hop Brook7/18/2016388
HB-S1Hop Brook8/1/2016341
HB-S1Hop Brook8/15/2016384
FR-S2Farmington River5/31/2016275
FR-S2Farmington River6/13/201652
FR-S2Farmington River6/27/201620
FR-S2Farmington River7/18/2016110
FR-S2Farmington River8/1/2016109
FR-S2Farmington River8/15/2016120

GRANBY

 Site NumberStream NameCollection DateE.coli colonies/100 mL
SB-EB1East Branch Salmon Brook6/6/20166488
SB-EB1East Branch Salmon Brook6/20/2016359
SB-EB1East Branch Salmon Brook7/11/2016228
SB-EB1East Branch Salmon Brook7/25/2016109
SB-EB1East Branch Salmon Brook8/8/2016213
SB-EB1East Branch Salmon Brook8/22/20161281
SB-2Salmon Brook6/6/20165475
SB-2Salmon Brook6/20/2016160
SB-2Salmon Brook7/11/2016295
SB-2Salmon Brook7/25/201698
SB-2Salmon Brook8/8/201698
SB-2Salmon Brook8/22/2016988
SB-WB3West Branch Salmon Brook5/31/201685
SB-WB3West Branch Salmon Brook6/13/2016121
SB-WB3West Branch Salmon6/27/201641
SB-WB3West Branch Salmon7/18/2016187
SB-WB3West Branch Salmon8/1/2016259
SB-WB3West Branch Salmon8/15/2016187

WINDSOR

 Site NumberStream NameCollection DateE.coli colonies/100 mL
FR-W1Farmington River6/6/2016269
FR-W1Farmington River6/20/2016404
FR-W1Farmington River7/11/2016341
FR-W1Farmington River7/25/2016620
FR-W1Farmington River8/8/201631
FR-W1Farmington River8/22/2016613
PB-W1Phelps Brook6/6/20164884
PB-W1Phelps Brook6/20/20161860
PB-W1Phelps Brook7/11/2016171
PB-W1Phelps Brook7/25/2016259
PB-W1Phelps Brook8/8/201697
PB-W1Phelps Brook8/22/20162359
ML-W1Mill Brook6/6/201610462
ML-W1Mill Brook6/20/2016813
ML-W1Mill Brook7/11/2016279
ML-W1Mill Brook7/25/2016684
ML-W1Mill Brook8/8/2016131
ML-W1Mill Brook8/22/201619863
FR-W2Farmington River6/6/20161198
FR-W2Farmington River6/20/201631
FR-W2Farmington River7/11/201610
FR-W2Farmington River7/25/201652
FR-W2Farmington River8/8/201652
FR-W2Farmington River8/22/20162014

YEARLY GEOMETRIC MEAN

AVON 2007 2008 2009 2010 2011 2012 2013 2014
TB-A1 21 294 50 58 80 51 84
NB-A1 163 358 90 612 138 209 130
BURLINGTON 2007 2008 2009 2010 2011 2012 2013 2014
BB-B1 N/A N/A N/A N/A 150 47 39
CANTON 2007 2008 2009 2010 2011 2012 2013 2014
CB-C1 N/A 355 207 408 332 160 105
EAST GRANBY 2007 2008 2009 2010 2011 2012 2013 2014
FR-EG1 N/A N/A N/A N/A 365 169 78
FARMINGTON 2007 2008 2009 2010 2011 2012 2013 2014
RO-F1 N/A N/A 102 104 85 88 62
FR-F1 28 120 83 55 79 120 62
PR-F1 846 1437 352 750 719 697 329
FR-F2 141 413 122 179 199 223 159
SIMSBURY 2007 2008 2009 2010 2011 2012 2013 2014
SB-EB1 567 378 438 234 715 318 177
SB-2 N/A N/A N/A N/A 445 313 218
MS-S1 90 770 607 1373 30 532 1312
RB-S1 190 431 172 415 338 172 568
FR-S1 102 447 198 155 165 95 61
GRANBY 2007 2008 2009 2010 2011 2012 2013 2014
MB-S1 858 3361 67 64 30 35 58
SB-WB3 N/A 174 121 133 258 90 95
FR-S3 160 379 169 105 200 88 108
HB-S1 117 328 277 203 430 398 149
FR-S2 226 314 184 110 199 126 87
WINDSOR 2007 2008 2009 2010 2011 2012 2013 2014
FR-W1 101 N/A 121 123 213 126 71
PB-W1 N/A N/A N/A 174 328 156 251
ML-W1 N/A N/A 368 367 529 510 195
FR-W2 N/A N/A N/A N/A 213 126 71