Mill Pond Reservoir
Middlesex County, Massachusetts58 acresView mapDirections
No nutrient or algae sampling on record from MassDEP for this lake.
- Impaired · Mercury
Mill Pond Reservoir in Middlesex County, Massachusetts has water-quality measurements published by MassDEP, shown here as reported. Surface area: 58 acres.
Mill Pond Reservoir is a 58-acre lake in Middlesex County, Massachusetts.
Source: EPA Water Quality Portal sampling records, MassDEP. Methodology: how these readings are compared.
Swimming conditions
No readingNot rated
Nutrient and algae readings are not a swimming clearance. Mill Pond Reservoir is listed impaired under Clean Water Act §303(d) (IR 4A) for mercury. Check local advisories before you swim.
Whether Mill Pond Reservoir is safe to swim in today is a call for the Massachusetts Department of Environmental Protection and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Mill Pond Reservoir
These are the measurements MassDEP publishes for Mill Pond Reservoir, 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 Mill Pond Reservoir
Answers come straight from the public measurements and survey records on this page.
Lake Details
Surface area
58 acres
Shoreline
1.7 mi
No bathymetric survey has been published for Mill Pond Reservoir, so its depth is not documented here.
Stays via Stay22
Stays near Mill Pond Reservoir
Compare lakeside cabins, hotels, and vacation rentals near Mill Pond Reservoir in Middlesex County, Massachusetts — 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.
Top-rated places to stay near Mill Pond Reservoir
Prices for Oct 16–18, 4 adults. Change dates on the map below.
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Planning a whole trip? See where to stay at Massachusetts’s top lakes →
Follow Mill Pond Reservoir’s readings
Email me when new measurements post for this lake. Updates stay free.
Or email
Fishing Mill Pond Reservoir
EPA Impairment Status
Mill Pond Reservoir is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 4A).
Causes of impairment
Designated uses not supporting: Fish consumption.
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit MA92041 · Official waterbody report
Nearby Lakes in Middlesex County
Frequently asked questions about Mill Pond Reservoir
Where is Mill Pond Reservoir?
- Mill Pond Reservoir is a lake in Middlesex County, Massachusetts. Its water-quality measurements are published by MassDEP and shown on this page as reported.
What is the water quality of Mill Pond Reservoir?
- Mill Pond Reservoir in Middlesex County, Massachusetts has water-quality measurements published by MassDEP, shown here as reported. Surface area: 58 acres.
Is Mill Pond Reservoir safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Mill Pond Reservoir is listed impaired under Clean Water Act §303(d) (IR 4A) for mercury. Check local advisories before you swim.
Explore Mill Pond Reservoir across LakeQuality
More lakes in Massachusetts
Other Lakes in Massachusetts
Where this data comes from
Measurements for Mill Pond Reservoir come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.
Other records on this page
Impairment status from EPA ATTAINS 303(d) database