Redding, CT Water Supply Resource Inventory

Emergency Planning
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Each of the ten municipal plans of conservation and development has policies towards aquifers and water supply watersheds. Redding's and the other nine have been copied and placed into one regional file to facilitate comparisons.

1) Sugar Hollow Aquifer: At the very northwesternmost corner of Redding is a small part of the Sugar Hollow Aquifer, the bulk of which lies east of Route 7 within Danbury and a lesser portion within Ridgefield.

2) Umpawaug Pond Aquifer: Then to the south and bordering Ridgefield is the Umpawaug Pond Aquifer, north of Topstone Road and and east of Simpaug Turnpike.

3) Simpaug Aquifer: Continuing south down Route 7 is the Simpaug Aquifer. It is centered on the intersection of Route 7 with Simpaug Turnpike in Ridgefield, with parts extending easterly into Redding.

4) Branchville Aquifer: Then further to the south, in the Georgetown Area, is found the Branchville Aquifer, shared with Ridgefield and Wilton.

5) Upper Saugatuck Aquifer: Along the Saugatuck River and Route 53, just east of West Redding Center, is the Upper Saugatuck Aquifer.

6 ) Aspetuck Valley Aquifer: On the eastern edge of Redding near Newtown, crossed by Valley Road and near the Aspetuck River, is the Aspetuck Valley Aquifer.


Whereas 25% of the Region's total land area lies within existing water supply watersheds, 87% of the Town of Redding is so designated. This is the highest municipal percentage in the Region, followed by 62% of the land area of Ridgefield and 42% of Danbury.

The southward runoff from Redding's water supply watersheds contributes greatly to the safe yield of the Aquarion Water Company. note that the Norwalk River Watershed in western Redding also flows south, but that there are no plans to convert it to water supply use. However, some historic discussion of that option has been preserved. A map of the entire Norwalk River Watershed from the Norwalk River Watershed Initiative group is available, showing its relationship to western Redding.

The sole public water supply in Redding arrives from the south via a regional pipeline. A 12/8/2000 CT DEP diversion of water application reads: “The applicant proposed to construct a pipeline and pump station to divert a maximum of 1.9 million gallons of water per day from the BHC Main System to the Georgetown section of Redding and Ridgefield for the purpose of providing public water supply.

The diversion will supply up to a maximum of 1.15 million gallons of water per day to Ridgefield and a maximum of 0.24 million gallons of water per day to the Georgetown section of Redding. The proposed activity will affect the Saugatuck, Aspetuck, and Mill Rivers, and Clicker Brook.”

According to Redding’s 1998 Town Plan “The runoff from about nine-tenths of Redding’s land and water surface either directly or potentially recharges public drinking water supplies. The Saugatuck, Aspetuck and Hemlock Reservoirs, which receive streamflow directly from Redding (as well as Easton and Weston) and store over 16 billion gallons, supply about half of the total water consumed in the populous coastal towns to the south.”

1 ) Saugatuck River Watershed: All of the Saugatuck River Watershed, except for a small portion tributary to the West Branch, flows to the Saugatuck Reservoir straddling the Redding-Weston line. This area totals to about 13,600 acres, or about 75% of Redding’s land area.

Route 53 bridge over the Saugatuck River

The highly scenic Saugatuck Reservoir became operational in 1942 and is owned by the Aquarion Water Company.

2) Wolf Pit Brook Watershed: State policy identifies the northward running Wolf Pit Brook Watershed into Bethel as a potential future source. The Wolf Pit Brook Watershed has only a very minor presence in Redding and flows northward from the Sunset Hill Road area.

3) Aspetuck River Watershed: All of the Aspetuck River Watershed in Redding, the easternmost quadrant of the Town, drains south to the Aspetuck Reservoir in Easton and Fairfield. Some of this drinking water is then pumped back up gradient into the Region, to Ridgefield, CT.

4) Mill River Watershed: The southeastern tip of Redding, only about 45 acres, is located in the Mill River Watershed flowing toward the Easton Reservoir in Easton. Landmarks are small sections of North Park Avenue and Rock House Road at the Easton Town Line.


The Connecticut Department of Environmental Protection (CT DEP) has developed water quality standards in conjunction with the principles of the federal Clean Water Act.

As a result each stream or water body in the Region has two classifications, one for existing use, and one for ultimate future use, written in a existing/future format such as "B/A" or "A/AA". The highest standards are reserved of existing and potential water supply areas, which are AA.

The DEP seeks to bring every water body in the State to a minimum classification of "B" or better, which would not be suitable for human consumption without treatment, but could be suitable for recreational use, fish and wildlife habitat, agricultural and industrial supply, and other legitimate uses.

There is a non degradation policy such that stream now AA or A cannot be reduced to B to allow discharges from industries or treatment plants. The classification system and application to Redding is summarized below:

Class AA: Designated uses are existing or proposed drinking water supply, fish and wildlife habitat, some recreational use, agricultural and industrial supply. Discharges severely restricted.

Class A: Designated uses is potential drinking water supply; fish and wildlife habitat; recreational use; agricultural and industrial supply and other legitimate uses including navigation. Discharges severely restricted. No reclassification of A or AA allowed down to B.

Class B: Designated uses are varied and include discharges from industrial and municipal wastewater treatment facilities providing Best Available Treatment and Best Management Practices are applied. All water bodies must eventually reach the minimum standards of the B classification.

Classes C and D: Indicates unacceptable quality, the goal is Class B or Class A and DEP will issue orders to require improvement.

1. Aspetuck River tributary that is unnamed and flowing from the north end of the old Redding Landfill entering Newtown easterly towards the Aspetuck River: B/AA.

Then the main stem of the Aspetuck River from this point south to the Easton Line (including two small tributaries, from south the end of old Redding Landfill, and from the Newtown Line southwesterly to east of Valley Road #2): B/AA.

Also, a tributary that joins the Aspetuck in Easton that cuts through easternmost Redding via Lyons Swamp north to the old Easton Landfill: B/AA.

2. Chestnut Ridge Reservoir tributary reaching south into Redding from Bethel: AA/AA.

3. Mill River tributary entering from Easton: AA/AA.

4. Norwalk River in the Georgetown Area, entering from Wilton and flowing south to again cross the Wilton Line: B/B.

5. Saugatuck River and tributaries: AA/AA.

6. Wolf Pit Brook and tributaries reaching south into Redding from Bethel: A/AA.

7. All other streams in Redding such as Gilbert Bennett Brook, West Branch Saugatuck River, etc: A/A.

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