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How much water was used in Connecticut in 2015?

Connecticut water use in 2015.

In 2015, approximately 3,128 million gallons per day (Mgal/d) of water was withdrawn from groundwater and surface-water sources in Connecticut. Total water withdrawals between 1990 and 2015 are on steady decline (-35 percent).

  • Surface water withdrawals totaled 3,000 Mgal/d (96 % of total) 
  • Groundwater withdrawals totaled 128 Mgal/d (4 % of total)
  • Freshwater withdrawals were 617 Mgal/d (20 % of total)
  • Saline water withdrawals were 2,511 Mgal/d (80 % of total)

Connecticut Total Water Withdrawals in 2015 by Category (Values in Mgal/day)

  • Thermoelectric—2,593
  • Public Supply—240
  • Industrial—222
  • Domestic—31
  • Aquaculture—25
  • Irrigation—11
  • Mining—4
  • Livestock—1
Connecticut Total Water Use by category in 2015
Connecticut Total Water Use by category in 2015 

Connecticut Public Water Supply Withdrawals in 2015 by County

CT County Groundwater (Mgal/d) Surface Water (Mgal/d) Total (Mgal/d)
Fairfield 4.49 83.49 87.98
Hartford 12.78 46.44 59.22
Litchfield 5.04 5.14 10.18
Middlesex 4.63 2.68 7.31
New Haven 4.77 49.72 54.49
New London 2.25 5.86 8.11
Tolland 3.29 1.64 4.93
Windham 5.76 1.95 7.71
Total 43.01 196.92 239.93