Upper Farmington River 2016 E.coli levels

The Upper Farmington River is designated as Wild & Scenic. Sampling is done by the FRWA and taken to the MCD (Metropolitan District Commission) Lab at the Water Treatment Facility in Bloomfield for analysis.

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. 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 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

Farmington River
APRIL MAY JUNE JULY AUGUST SEPTEMBER OCTOBER   NOVEMBER
FR1 14 8 <5 6 5700+ 30  10
FR2 59 22 80 18 1100 80 10
FR3 67 98 130 40 100 100 40
FR4 36 30 110 32 130 690 50
Still River
APRIL MAY JUNE JULY AUGUST SEPTEMBER OCTOBER   NOVEMBER
SR1 10 35 190 290 160 770 20
SR2 68 130 420 1400 650 1000 230
SR3 16 110 500 300 290 630 90
SR4 90 330 630 180 250 500 200
Mad River
APRIL MAY JUNE JULY AUGUST SEPTEMBER OCTOBER  NOVEMBER
MR1 <2 10 85 1400 5700+ 800 180
MR2 8 70 60 10 30 200 20
MR3 6 34 150 40 320 100 <10
MR4 14 52 500 300 650 710 160
Morgan Brook
APRIL MAY JUNE JULY AUGUST SEPTEMBER OCTOBER  NOVEMBER
MB1 10 45 230 230 170 230 20
MB2 88 130 310 55 110 250 90
MB3 18 65 75 15 100 30 <10
Duplicate