Union Pond is a lake in Capitol County, Connecticut. Its water-quality measurements are published by CT DEEP and shown on this page as reported.

Union Pond

Capitol County, Connecticut54 acresView map Directions

No nutrient or algae sampling on record from CT DEEP for this lake.

Area

54 acres

Surface area

Shoreline

1.8 mi

Measured length

Impaired · Algal growth

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Union Pond in Capitol County, Connecticut has water-quality measurements published by CT DEEP, shown here as reported. Surface area: 54 acres.

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Union Pond is a 54-acre lake in Capitol County, Connecticut.

Source: EPA Water Quality Portal sampling records, your state environmental agency. Methodology: how these readings are compared.

Swimming conditions

No reading

Not rated

Nutrient and algae readings are not a swimming clearance. Union Pond is listed impaired under Clean Water Act §303(d) (IR 5) for algal growth, nutrients (phosphorus, nitrogen), pesticides, sediment / turbidity. Check local advisories before you swim.

Whether Union Pond is safe to swim in today is a call for the Connecticut Department of Energy and Environmental Protection and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.

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Water quality measurements for Union Pond

These are the measurements CT DEEP publishes for Union Pond, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.

No clarity data. TSI undefined.

Ask about Union Pond

Answers come straight from the public measurements and survey records on this page.

Lake Details

Surface area

54 acres

Shoreline

1.8 mi

No bathymetric survey has been published for Union Pond, so its depth is not documented here.

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Stays near Union Pond

Compare lakeside cabins, hotels, and vacation rentals near Union Pond in Capitol County, Connecticut — live availability and prices for your trip. Switch the map to Satellite to see the lake and how close each stay is to the water.

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Fishing Union Pond

→ Union Pond fishing regulations (limits, seasons, special rules)

EPA Impairment Status

Union Pond is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 5).

Causes of impairment

Algal growthNutrients (phosphorus, nitrogen)PesticidesSediment / turbidity

Designated uses not supporting: Aquatic life, Fish consumption.

Source: EPA ATTAINS assessment unit CT4500-00-3-L3_01 · Official waterbody report

Nearby Lakes in Capitol County

Globe Hollow Reservoir3.4 miView →Hockanum River Reservoir4.3 miView →Buckingham Reservoir5.8 miView →Shenipsit Lake7.5 miView →Strong Pond—View →Holbrook Pond—View →

Frequently asked questions about Union Pond

Where is Union Pond?: Union Pond is a lake in Capitol County, Connecticut. Its water-quality measurements are published by CT DEEP and shown on this page as reported.
What is the water quality of Union Pond?: Union Pond in Capitol County, Connecticut has water-quality measurements published by CT DEEP, shown here as reported. Surface area: 54 acres.
Is Union Pond safe to swim in?: Nutrient and algae readings are not a swimming clearance. Union Pond is listed impaired under Clean Water Act §303(d) (IR 5) for algal growth, nutrients (phosphorus, nitrogen), pesticides, sediment / turbidity. Check local advisories before you swim.