Tap Truth EPA drinking water records, in plain English

County drinking water records

Western Connecticut Planning Region, CT drinking water systems

72 community water systems serve Western Connecticut Planning Region, CT, reporting 688,461 people served in all. A system that also serves other counties counts all of its customers here.

20 of them (28%) had at least one health-based violation in the last 10 years. 21 systems still have one unresolved.

55 rely mainly on groundwater and 17 on surface water, counting water bought from other systems.

70 systems filed a lead service line inventory listing 4,097 lead lines, 779 galvanized lines that must be replaced and 115,973 lines of unknown material.

3 more systems are placed in Western Connecticut Planning Region, CT by the county their records name because they have no service area map that lines up with their own records, so they are listed apart and not counted here.

Community water systems
72
People served, sum of each system's own figure
688,461
Systems with a health-based violation, last 10 years
20
Systems with one unresolved
21
Lead service lines in inventories
4,097

Water systems serving Western Connecticut Planning Region

72 systems

People served is each system's own figure for its whole service area. Violation counts cover the last 10 years of EPA records.

System Serves People served Main source Health-based violations, 10 years Unresolved Lead lines
Aquarion-Eastern Fairfield County Shelton, Stamford and 43 more 351,756 Surface water 0 0 3,948
Aquarion-Stamford Weston 119,214 Surface water 0 0 4
Danbury Water Department Danbury 62,055 Surface water 1 0 0
South Norwalk Electric & Water Norwalk 42,000 Surface water 3 0 19
Norwalk First Taxing District Norwalk 40,256 Surface water 0 0 91
Aquarion-Darien Norwalk 18,737 Purchased surface water 0 0 20
Aquarion-New Milford Regional New Milford and Brookfield Center and land outside them 13,331 Groundwater 0 0 11
Bethel Water Dept Bethel 9,507 Surface water 0 0 0
Aquarion-Ridgefield Ridgefield, West Mountain and 2 more 7,476 Purchased surface water 0 0 0
Aquarion-Newtown Regional Outside cities and towns 6,054 Groundwater 0 1 2
Fairfield Hills Outside cities and towns 2,610 Groundwater 1 3 0
Candlewood Shores Tax District Candlewood Orchards and Candlewood Shores 1,315 Groundwater 0 0 0
Aquarion-Ridgefield Knolls Lakes West 958 Groundwater 0 1 0
CLC Owners Corporation Candlewood Lake Club and Chimney Point 736 Groundwater 0 0 0
Lake Waubeeka Association Danbury 712 Groundwater under direct influence 0 0 0
Aquarion-Ball Pond Ball Pond 629 Groundwater 0 0 0
Brunswick School (Lower & Lower Middle) Outside cities and towns 567 Groundwater 0 0 0
Candlewood Knolls Water Authority Candlewood Knolls and land outside it 524 Groundwater 0 0 0
Stone Bridge Center for Health & Rehab Outside cities and towns 504 Groundwater 1 2 0
Sunny Valley Tax District Outside cities and towns 500 Groundwater 5 4 0
Aquarion-New Fairfield Outside cities and towns 406 Groundwater 0 1 0
Aquarion-Meadowbrook Outside cities and towns 396 Groundwater 0 0 0
Stony Hill Village Condominium Assn Outside cities and towns 392 Groundwater 0 0 0
Aqua Vista Assoc, Inc Danbury 388 Groundwater 0 0 0
Knollcrest Tax District Knollcrest 356 Groundwater 3 1 1
Aquarion-Carmen Hill Outside cities and towns 322 Groundwater 0 2 0
Candlewood Trails Association, Inc. Outside cities and towns 312 Groundwater 0 0 0
Aquarion-Timber Trails Outside cities and towns 310 Groundwater 0 0 1
Aquarion-Possum Ridge Outside cities and towns 307 Groundwater 0 0 0
Birch Groves Association, Inc Outside cities and towns 300 Groundwater 0 6 0
Arrowhead Point Homeowners Assn Inc. Candlewood Orchards 296 Groundwater 0 0 0
Aquarion-Oakwood Acres Bigelow Corners 286 Groundwater 0 1 0
Old Farms Condominium Association Inc New Milford 285 Groundwater 0 0 0
Aquarion-Forest Hills Outside cities and towns 265 Groundwater 0 0 0
Aquarion-Indian Spring Danbury 242 Groundwater 0 0 0
Candle Hill Mobile Home Park Outside cities and towns 233 Groundwater 1 0 0
Aquarion-Hollandale Estates Danbury 200 Purchased surface water 0 0 0
Aquarion-Dean Heights Outside cities and towns 162 Groundwater 0 0 0
55 Sugar Street Outside cities and towns 158 Groundwater 1 0 0
Hawthorne Terrace Assoc Danbury 156 Groundwater 0 0 0
Aquarion-Ken Oaks Danbury 152 Purchased surface water 0 0 0
Aquarion-Twin Oaks Outside cities and towns 152 Groundwater 0 0 0
Candlewood Springs Property Owners Assn Outside cities and towns 148 Groundwater 0 0 0
Aquarion-Indian Fields Outside cities and towns 147 Groundwater 0 0 0
Brookfield Hills Condominium Unit Owners Outside cities and towns 144 Groundwater 4 1 0
Candlewood Orchards Property Owners Corp Outside cities and towns 144 Groundwater 0 0 0
Snug Harbor Development Corp Danbury 144 Groundwater 0 0 0
Aquarion-Pearce Manor Danbury 133 Purchased surface water 1 0 0
Aquarion-Hickory Hills Candlewood Orchards 132 Groundwater 0 0 0
Lake Lillinonah Shores Condos Outside cities and towns 130 Groundwater 7 2 0
Aquarion-Scodon Ridgebury 130 Groundwater 0 0 0
Lillinonah Park Estates Homeowners Assn Outside cities and towns 128 Groundwater 2 1 0
Aquarion-Butternut Outside cities and towns 124 Groundwater 0 0 0
Aquarion-Barnum Ridgebury 120 Purchased surface water 0 0 0
Shady Acres Mobile Home Park Danbury 117 Groundwater 0 0 0
Danbury Water Dept-Ridgeview Gardens Danbury 116 Groundwater 0 0 0
Aquarion-Rolling Ridge Danbury 115 Purchased surface water 0 0 0
Cornell Hills Assoc, Inc Danbury 108 Purchased surface water 1 4 0
Weston Water Supply Outside cities and towns 100 Groundwater 2 1 0
Aquarion-Fieldstone Ridge Taylor Corners 84 Groundwater 0 0 0
Aquarion-Berkshire Outside cities and towns 75 Purchased surface water 0 0 0
Woodcreek Village Condominium Assn, Inc Outside cities and towns 72 Groundwater 1 3 No inventory
Aquarion-McKeon Ridgebury 67 Purchased surface water 0 0 0
Cedar Terrace Prop Owners Assn Danbury 66 Groundwater 3 0 0
Aquarion-Birches Outside cities and towns 66 Groundwater 0 0 0
Aquarion-Interlaken Knollcrest 64 Groundwater 0 1 0
Brookview Water Company Outside cities and towns 55 Groundwater 1 4 No inventory
Elmwood Court, LLC Outside cities and towns 54 Groundwater 4 1 0
Bridgewater Commons Condominiums Outside cities and towns 51 Groundwater 0 0 0
Brookfield Housing Authority Outside cities and towns 37 Groundwater 2 2 0
Aquarion-Park Glen Outside cities and towns 37 Groundwater 0 0 0
39 Hop Brook Rd - Apt Complex Outside cities and towns 36 Groundwater 3 1 0

Systems placed by county record in Western Connecticut Planning Region

3 systems

EPA has no service area map for some of these systems, and the maps it has for the others do not line up with their own records. They are placed by the county their records name (the counties EPA lists them serving, or the county coded in their IDs where EPA lists none), and without a map they are not counted in the figures above.

System Serves People served Main source Health-based violations, 10 years Unresolved Lead lines
Aquarion-Greenwich County on record 53,297 Surface water 0 0 1,553
Aquarion-New Canaan County on record 10,097 Purchased surface water 0 0 5
Aquarion-Laurel Ridge County on record 80 Groundwater 0 0 0

Cities and towns in Western Connecticut Planning Region

49 places

Back to Connecticut

Counties come from the counties EPA lists each system serving, matched to 2024 Census counties; where EPA lists none, from the county coded in the system's ID, its service area map, or its mailing address. A county holding at least a fifth of a system's service area map is added when at least a fifth of that map lies in those counties. Towns are the ones EPA lists and the Census places such a map covers, always inside those counties. In New England, where EPA's town names a whole Town, it is not matched to the village of the same name. A system is not listed in a county holding less than a fifth of its map, or in a county or town its map reaches when the map lies mostly outside the counties EPA lists, so a page can leave out a system that serves part of the area. Methodology and limitations