Water quality by city
Water quality in Connecticut
EPA drinking-water records for 391 public water systems across 154 Connecticut cities — the contaminants found and the certified filters that remove them. Pick your city for its full report.
Know your ZIP? Go straight to your water report.
Check by ZIP → Clinton ·PFAS 18 systems Shelton ·PFAS 17 systems East Hartford 10 systems Danbury ·PFAS 9 systems Old Lyme 9 systems Bolton 8 systems Greenwich 7 systems Monroe ·PFAS 7 systems Putnam ·PFAS 7 systems Brookfield 6 systems East Hampton 6 systems Lebanon 6 systems Ridgefield 6 systems Uncasville 6 systems Dayville 5 systems Manchester ·PFAS 5 systems Norwich ·PFAS 5 systems Oakdale 5 systems Thompson 5 systems Weston 5 systems Bethel ·PFAS 4 systems Durham 4 systems Gales Ferry 4 systems Moodus 4 systems South Windsor 4 systems Stamford 4 systems Storrs ·PFAS 4 systems Vernon 4 systems Woodstock 4 systems Ashford 3 systems Bloomfield 3 systems Colchester ·PFAS 3 systems Enfield ·PFAS 3 systems Killingworth 3 systems Mashantucket ·PFAS 3 systems Middlefield 3 systems Morris 3 systems Mystic 3 systems New Fairfield 3 systems New Milford 3 systems Niantic ·PFAS 3 systems Norwalk ·PFAS 3 systems Portland ·PFAS 3 systems Stonington 3 systems Tolland 3 systems Waterford 3 systems Willington 3 systems Wilton 3 systems Avon 2 systems Berlin ·PFAS 2 systems Bethany 2 systems Bozrah 2 systems Broad Brook 2 systems Canterbury 2 systems Canton 2 systems Cheshire 2 systems Chester 2 systems Columbia 2 systems Cromwell ·PFAS 2 systems Danielson 2 systems Deep River 2 systems East Granby 2 systems East Haddam 2 systems Easton 2 systems Ellington 2 systems Glastonbury 2 systems Goshen 2 systems Haddam 2 systems Hartford 2 systems Mansfield Center ·PFAS 2 systems Marlborough 2 systems New Britain 2 systems New Canaan 2 systems New Hartford 2 systems New Haven ·PFAS 2 systems New Preston 2 systems Newtown 2 systems North Haven 2 systems Redding 2 systems Roxbury 2 systems Salem 2 systems Sandy Hook 2 systems Voluntown 2 systems Wallingford ·PFAS 2 systems Washington 2 systems Waterbury 2 systems Watertown 2 systems Westport 2 systems Andover 1 system Bethlehem 1 system Bristol ·PFAS 1 system Brooklyn 1 system Chaplin 1 system Cobalt 1 system Collinsville 1 system Cornwall Bridge 1 system East Windsor 1 system Eastford 1 system Essex 1 system Fairfield 1 system Falls Village 1 system Georgetown 1 system Granby 1 system Griswold 1 system Groton 1 system Hamden 1 system Hampton 1 system Harwinton 1 system Jewett City 1 system Kensington 1 system Killingly 1 system Ledyard 1 system Meriden ·PFAS 1 system Middletown 1 system Moosup 1 system N Stonington 1 system North Franklin 1 system North Stonington 1 system North Windham 1 system Oakville 1 system Orange 1 system Oxford 1 system Pomfret Center 1 system Promfret 1 system Prospect 1 system Quinebaug 1 system Rockfall 1 system Rocky Hill 1 system Seymour 1 system Sharon 1 system Sherman 1 system Somers 1 system South Glastonbury 1 system South Kent 1 system Southbury 1 system Southington ·PFAS 1 system Stafford 1 system Stafford Springs 1 system Stratford 1 system Tariffville 1 system Torrington 1 system Trumbull 1 system Warren 1 system West Cornwall 1 system West Haven 1 system West Mystic 1 system West Suffield 1 system Westbrook 1 system Wethersfield 1 system Willimantic 1 system Windham 1 system Windsor 1 system Winsted 1 system Wolcott 1 system