Styrene violations in Connecticut
39 active public water systems in Connecticut had a Styrene violation in the past three years, 4 of them in the latest quarter of EPA's data. What Styrene is and why it matters.
Systems with a Styrene violation
Latest quarter first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Brunswick School (upper Middle) Greenwich · Fairfield County |
295 | 3 | 0 | |
|
Mallard Cove Condominium Assn. East Hampton · Middlesex County |
177 | 7 | 0 | |
|
Weston Shopping Center Associates, LLC Weston · Fairfield County |
65 | 5 | 1 | |
|
Windham Phoenix Academy Windham · Windham County |
55 | 3 | 1 | |
|
Wallingford Water Department North Haven, Wallingford · New Haven County |
37,267 | 2 | 0 | |
|
Bethel Water Dept Bethel, Danbury · Fairfield County |
9,507 | 6 | 0 | |
|
Putnam Water Pollution Control Authority Putnam, Thompson, Woodstock · Windham County |
7,300 | 1 | 0 | |
|
Berlin Water Control Commission Berlin, Middletown, Newington · Hartford County |
5,128 | 5 | 2 | |
|
Southbury Training School Southbury · New Haven County |
816 | 4 | 1 | |
|
Stony Hill Village Condominium Assn Brookfield · Fairfield County |
392 | 4 | 0 | |
|
East Hampton Wpca Village Center East Hampton · Middlesex County |
366 | 5 | 0 | |
|
Ethel Walker School Simsbury · Hartford County |
325 | 3 | 1 | |
|
The Frederick Gunn School, Inc. Washington · Litchfield County |
300 | 3 | 0 | |
|
Colchester Estates Colchester · New London County |
276 | 6 | 2 | |
|
Blue Trails Water Association Durham, North Branford · New Haven County |
224 | 4 | 2 | |
|
Carefree Homeowners Association Lebanon · New London County |
172 | 3 | 1 | |
|
74 Route 37, LLC New Fairfield · Fairfield County |
130 | 4 | 1 | |
|
Tamarack Country Club Greenwich · Fairfield County |
130 | 1 | 0 | |
|
Emmanuel Episcopal Church Weston · Fairfield County |
113 | 6 | 1 | |
|
Atlas Commons Old Saybrook · Middlesex County |
100 | 8 | 1 | |
|
M&m Realty Holdings LLC Killingworth · Middlesex County |
87 | 2 | 0 | |
|
Sherman Green Marketplace Sherman · Fairfield County |
79 | 5 | 1 | |
|
Smt Corporation Newtown · Fairfield County |
73 | 2 | 1 | |
|
Round Hill LLC Well# 1&2 Lisbon · New London County |
72 | 9 | 3 | |
|
Rocky Glen Mill Newtown · Fairfield County |
70 | 6 | 1 | |
|
Granby Congregational Church Granby · Hartford County |
65 | 6 | 1 | |
|
Little Brook RD Property Owners Assn New Hartford · Litchfield County |
64 | 6 | 1 | |
|
Sharon Ridge Apartments Sharon · Litchfield County |
62 | 2 | 0 | |
|
Enchanted Garden Ethan Allen Hwy Ridgefield · Fairfield County |
61 | 6 | 1 | |
|
Cornwall Water Company Cornwall · Litchfield County |
48 | 8 | 3 | |
|
Sunset Apartments LLC Bolton · Tolland County |
46 | 6 | 2 | |
|
Brookfield Housing Authority Brookfield · Fairfield County |
37 | 5 | 1 | |
|
Tashua Village Association, Inc. Trumbull · Fairfield County |
35 | 6 | 0 | |
|
Christ Episcopal Church Oxford · New Haven County |
34 | 5 | 2 | |
|
255 Route 80 Killingworth Killingworth · Middlesex County |
32 | 4 | 1 | |
|
Keeler Ridgefield B Ridgefield · Fairfield County |
30 | 8 | 3 | |
|
Salem Town Center LLC Salem · New London County |
30 | 4 | 2 | |
|
Windsorville Water Association East Windsor · Hartford County |
29 | 8 | 1 | |
|
Southford Retail Center Southbury · New Haven County |
25 | 4 | 0 |
About this data
A system is counted once if any of its violations in the past three years involved Styrene, including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Styrene alone.
Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The Connecticut records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet. Retrieved from ECHO on Oct 11, 2026.