Browse Water Systems
10,863 public water systems in CT.
Public Water Systems Database
Browse 10,863 EPA-regulated public water systems with identifiers, population served, and water source type. Use the filters below to narrow results by state, system type, or name.
| System Name | PWSID | State | Type | Population Served |
|---|---|---|---|---|
| SCWA, MOHEGAN DIVISION | CT0860021 | Connecticut | Community | 1,428 |
| CONSOLIDATED & MEETING HOUSE HILL SCHOOL | CT0915053 | Connecticut | Non-Transient Non-Community | 1,425 |
| KILLINGLY HIGH SCHOOL & AGRICULTURAL CTR | CT0691243 | Connecticut | Non-Transient Non-Community | 1,400 |
| CTWC - LEGEND HILL SYSTEM | CT0765101 | Connecticut | Community | 1,368 |
| LEWIS MILLS-HARBUR SCHOOLS | CT0209113 | Connecticut | Non-Transient Non-Community | 1,363 |
| AQUARION-MARLBOROUGH | CT0798013 | Connecticut | Community | 1,348 |
| CTWC - NAUGATUCK DIV, TOWN OF MIDDLEBURY | CT0810383 | Connecticut | Community | 1,332 |
| CANDLEWOOD SHORES TAX DISTRICT | CT0180061 | Connecticut | Community | 1,315 |
| MONTVILLE WATER SUPPLY | CT0864011 | Connecticut | Community | 1,300 |
| REGIONAL SCHOOL DIST #13 CONSOLIDATION | CT0380472 | Connecticut | Non-Transient Non-Community | 1,261 |
| COVENTRY HIGH & NATHAN HALE SCHOOLS | CT0320292 | Connecticut | Non-Transient Non-Community | 1,252 |
| TOLLAND WATER DEPARTMENT | CT1423011 | Connecticut | Community | 1,251 |
| AQUARION-WOODBURY | CT1680011 | Connecticut | Community | 1,209 |
| AQUARION WATER CO OF CT-WESTERN BROOKFLD | CT0180141 | Connecticut | Community | 1,203 |
| OLD LYME SHORES | CT1050072 | Connecticut | Community | 1,200 |
| NEWTOWN HIGH SCHOOL | CT0970442 | Connecticut | Non-Transient Non-Community | 1,173 |
| WOODSTOCK ACADEMY | CT1691112 | Connecticut | Non-Transient Non-Community | 1,125 |
| REGION 18 SCHOOLS - LYME STREET | CT1050492 | Connecticut | Non-Transient Non-Community | 1,102 |
| AQUARION-EAST DERBY | CT0378011 | Connecticut | Community | 1,101 |
| CTWC - THOMPSON SYSTEM | CT1410011 | Connecticut | Community | 1,070 |
| CTWC - SHORELINE REGION-POINT O WOODS | CT1050752 | Connecticut | Community | 1,068 |
| SPRAGUE WATER & SEWER AUTHORITY | CT1330021 | Connecticut | Community | 1,058 |
| CTWC - NORTHERN REG-SOMERS SYSTEM | CT1290011 | Connecticut | Community | 1,051 |
| ROSEBROOK WATER | NH0382010 | Connecticut | Community | 1,050 |
| LEDYARD SENIOR HIGH SCHOOL | CT0721133 | Connecticut | Non-Transient Non-Community | 1,024 |
| UNIVERSITY OF CONNECTICUT - DEPOT CAMPUS | CT0780011 | Connecticut | Community | 1,010 |
| BARLOW MOUNTAIN & SCOTLAND ELEM SCHOOLS | CT1180013 | Connecticut | Non-Transient Non-Community | 1,000 |
| SOUND VIEW IMPROVEMENT CO | CT1050102 | Connecticut | Community | 1,000 |
| UNIONVILLE WATER COMPANY - FIP SYSTEM | CT0520092 | Connecticut | Non-Transient Non-Community | 1,000 |
| BROOKFIELD HIGH SCHOOL | CT0181142 | Connecticut | Non-Transient Non-Community | 995 |
| AQUARION WATER COMPANY | MA1267000 | Connecticut | Community | 987 |
| AQUARION-RIDGEFIELD KNOLLS | CT1180021 | Connecticut | Community | 958 |
| ST. BERNARD SCHOOL | CT0860282 | Connecticut | Non-Transient Non-Community | 950 |
| WHISCONIER MIDDLE SCHOOL | CT0181112 | Connecticut | Non-Transient Non-Community | 950 |
| SOUND VIEW IMPROVMENT CO | CT1050101 | Connecticut | Community | 940 |
| AQUARION-NORFOLK | CT0980011 | Connecticut | Community | 913 |
| WOODLAKE TAX DISTRICT | CT1680031 | Connecticut | Community | 912 |
| AQUARION WATER CO OF CT-GREENRIDGE | CT0180071 | Connecticut | Community | 912 |
| CTWC - AMSTON LAKE DIVISION | CT0670331 | Connecticut | Community | 910 |
| LAKE AMSTON DIV BESECK LK WATE | CT0670031 | Connecticut | Community | 908 |
| FRITO-LAY | CT0691203 | Connecticut | Non-Transient Non-Community | 903 |
| CONVENT OF SACRED HEART | CT0570022 | Connecticut | Non-Transient Non-Community | 900 |
| JOEL BARLOW REGIONAL HIGH SCHOOL | CT1170332 | Connecticut | Non-Transient Non-Community | 890 |
| NONNEWAUG HIGH SCHOOL | CT1680112 | Connecticut | Non-Transient Non-Community | 887 |
| OAKDALE HEIGHTS ASSOCIATION, INC | CT0860031 | Connecticut | Community | 876 |
| AVERY HEIGHTS WATER ASSN INC | CT1320011 | Connecticut | Community | 864 |
| WOLCOTT HIGH SCHOOL | CT1660022 | Connecticut | Non-Transient Non-Community | 861 |
| HAND HIGH SCHOOL | CT0760152 | Connecticut | Non-Transient Non-Community | 859 |
| KENMONT & KENWOOD CAMPS | CT0680074 | Connecticut | Transient Non-Community | 825 |
| AQUARION-KENT | CT0680011 | Connecticut | Community | 817 |