County · Connecticut

Windham County, Connecticut: drinking water records

Name: Drinking water records for Windham County, Connecticut
Creator: U.S. Environmental Protection Agency
License: https://www.usa.gov/government-works

Explore EPA records for 53 community water systems across 29 ZIP codes in Windham County, then find water-testing resources and available recent monitoring-station readings.

In focus53Community water systems

Public records. Clearer context.

Data as of EPA UCMR 5 final release, August 2026 (file dated Aug 28, 2026) · EPA SDWIS 2026Q2 (file dated Jul 9, 2026). How we build these pages

Drinking-water records

EPA survey and compliance records are historical reports. UCMR 5 results are available for 3 of the 53 listed systems in this snapshot. A system with no reported PFAS detection is not a test of every tap or every contaminant.

systems in EPA's PFAS survey

systems where PFAS was found

systems at or above the PFOA or PFOS limit, on the yearly-average basis EPA uses

systems that have reached the lead action level

systems with a health-based violation since 2016

System population figures are summed from EPA registry records and can overlap where wholesalers and retail systems serve the same people. They are not a Census county-population estimate.

Water systems in this county

All 53 active community systems in the available county records, sorted by record completeness. Scroll the table to explore more systems.

Water system	People served	PFAS survey results	PFAS found	Health-based violations	Lead, 9 in 10 homes at or below
Windham Water Works CT1630011	21,214	120	1	0	4.3 ppbbelow the action level
Putnam Water Pollution Control Authority CT1160011	7,300	300	5	0	2.8 ppbbelow the action level
Ctwc - Crystal System CT0690011	6,378	120	4	0	0.5 ppbbelow the action level
Woodstock Academy South Campus CT1691171	620	0	0	1	7.9 ppbbelow the action level
Pomfret School CT1120051	400	0	0	1	0 ppbbelow the action level
The Rectory School CT1120061	300	0	0	1	0.7 ppbbelow the action level
Matulaitis Nursing Home CT1160021	254	0	0	1	0 ppbbelow the action level
Quinebaug Mobile Home Park CT1411041	205	0	0	6	0 ppbbelow the action level
Woodstock Meadows Condominium Assn. CT1698011	180	0	0	1	2.6 ppbbelow the action level
Campbell Heights Apartments CT0229031	152	0	0	3	0 ppbbelow the action level
Perry Hill Estates Apartments INC. CT0030021	144	0	0	2	0.6 ppbbelow the action level
Ashford Hills Apartments CT0030011	136	0	0	2	0 ppbbelow the action level
Douglas Manor CT1631031	135	0	0	1	22.1 ppbat or above the action level
Birch Hills Condominiums CT0030041	132	0	0	1	1.8 ppbbelow the action level
Marianapolis Prep School - St Johns CT1410051	128	0	0	1	7.4 ppbbelow the action level
Pinecrest Condominiums CT1698041	110	0	0	9	1.1 ppbbelow the action level
Roseland Terrace Association, INC. CT1690021	100	0	0	3	0 ppbbelow the action level
Fall Brook Mobile Home Park CT0690051	98	0	0	1	0 ppbbelow the action level
Woodlawn Apartments CT0030051	96	0	0	2	0 ppbbelow the action level
Thompson Hill Water Co - Paula Lane Div CT1410661	85	0	0	2	1.4 ppbbelow the action level
Evangelical Christian Center - Main CT0037001	84	0	0	2	2.3 ppbbelow the action level
Cranberry Bog Apartments CT0690141	72	0	0	2	0 ppbbelow the action level
Chaplin Woods Condominiums CT0248011	69	0	0	2	14.5 ppbbelow the action level
Longview Estates, LLC CT0220011	69	0	0	1	1.3 ppbbelow the action level
Country Manor CT1120041	66	0	0	9	0 ppbbelow the action level
Conrads Park CT0690071	60	0	0	5	0 ppbbelow the action level
Westview Terrace Mobile Home Park CT1090161	60	0	0	1	0 ppbbelow the action level
Marianapolis Prep School - St Alberts CT1419081	51	0	0	5	1.4 ppbbelow the action level
Mar-Lea Park Apartments CT0030061	50	0	0	2	4.3 ppbbelow the action level
Country Acres Park CT0690061	48	0	0	1	0 ppbbelow the action level
Gorman Road Apartments CT0199091	48	0	0	1	9.9 ppbbelow the action level
Knollbrook Village Elderly Housing CT0220191	48	0	0	1	0 ppbbelow the action level
Seely - Brown Village CT1121131	48	0	0	3	0 ppbbelow the action level
Moosup Pond Terrace, LLC CT1099181	46	0	0	1	0 ppbbelow the action level
Brookwood Apartments CT1699011	44	0	0	5	0.3 ppbbelow the action level
Brookscrossing Apartments CT1121011	36	0	0	1	0.5 ppbbelow the action level
Fawn Ridge Association INC. CT1699081	36	0	0	10	2.6 ppbbelow the action level
Hubbard Hill Apartments CT0699231	36	0	0	6	0 ppbbelow the action level
Jumbo Apartments CT1094201	35	0	0	1	0.7 ppbbelow the action level
Brooklyn Manor CT0190051	30	0	0	1	0 ppbbelow the action level
Moosup Manor CT1099131	27	0	0	2	0 ppbbelow the action level
Woodstock Housing Authority CT1690031	26	0	0	1	3 ppbbelow the action level
Ctwc - Gallup System CT1090031	2,538	0	0	0	2.3 ppbbelow the action level
Ctwc - Plainfield System CT1090081	1,713	0	0	0	0 ppbbelow the action level
Ctwc - Thompson System CT1410011	1,070	0	0	0	1.1 ppbbelow the action level
Ctwc - Ashford Park Division CT0030031	334	0	0	0	0 ppbbelow the action level
Wyndham Park Apartments CT1630021	312	0	0	0	1.4 ppbbelow the action level
Sterling Water System CT1360011	308	0	0	0	0 ppbbelow the action level
Moosup Garden Apartments CT1090221	270	0	0	0	0 ppbbelow the action level
Ctwc - Cornfield Point Div. CT1698051	57	0	0	0	1.6 ppbbelow the action level
Justice Resource Institute, INC. CT1419071	56	0	0	0	0 ppbbelow the action level
Arnio Drive LLC CT1099141	33	0	0	0	0 ppbbelow the action level
Ctwc - Pompey Hollow Division CT0030411	32	0	0	0	0 ppbbelow the action level

Shaded rows report lead at or above the 15 ppb action level in their latest monitoring period. EPA sets that level for the value 9 in 10 sampled homes fall at or below; reaching it requires the utility to act, and it is not a measurement of any single tap. One system in this table is at or above it. What an action level means

USGS · Monitoring stations

The water, more recently.

Available station readings in Windham County, Connecticut. Each measurement keeps its time, unit and original source.

These readings describe water at a monitoring station. They do not test your tap, measure PFAS or lead, or determine whether water is safe to drink or swim in.

Recent observations load when this section comes into view.

How these readings update

We check for updates every 10 minutes while this section is visible and show supported observations from the last 48 hours. The time beside a reading is when USGS measured it; the checked time is when our service retrieved the response. We mark a reading more than 6 hours old as older. Provisional observations can change after USGS review. A missing reading does not mean zero or clean water.

Temperature, pH, dissolved oxygen, turbidity, conductivity, streamflow and water level are shown only where a station reports them. Different measurements have different units and sampling intervals. USGS data and documentation.

Your next step

Water testing, reports & local help.

Use these official directories to find your drinking-water agency, a certified laboratory and public water records. We have not yet added an individually reviewed local resource list for this county.

Official national directories

Water testing

Find your state’s private-well program

EPA’s state directory points well owners to local program information. Services and eligibility vary by state and county.

U.S. Environmental Protection Agency
Source reviewed 2026-09-15 · Source updated 2026-08-05

Water testing

Find a certified drinking-water laboratory

Use EPA’s directory to reach your state’s laboratory certification program. EPA does not provide on-request testing of residential drinking water.

U.S. Environmental Protection Agency
Source reviewed 2026-09-15 · Source updated 2026-08-11

Public records

Find your utility’s Consumer Confidence Report

EPA links to community water-system reports and explains how to read them. Look for your actual supplier rather than assuming every address in a county shares one system.

U.S. Environmental Protection Agency
Source reviewed 2026-09-15 · Source updated 2026-09-09

Public records

Explore USGS water observations

Find current and historical observations from USGS monitoring locations, including available stream, lake, and groundwater data. Measurements vary by station and do not replace a test of your household water.

U.S. Geological Survey
Source reviewed 2026-09-15

A county overview cannot identify every property’s water provider. If you use a public water system, confirm its name on your bill and request its annual Consumer Confidence Report. Private wells need their own testing; public-system records do not describe a private well.

Understand water testing and laboratory reports

Resource descriptions are compiled by Tap Water Lookup. Review dates describe our source check, not a new water sample. How we review sources · Suggest a correction

Explore your area

Local coverage in Windham County

29ZIP areas in this overview

Explore the water-system records, recent station readings and testing resources on this county page. They describe the systems and stations identified in each section; they are not a separate water test for every community.

Towns and communities

Danielson
Dayville
East Brooklyn
Lake Bungee
Lake Chaffee
Mechanicsville
Moosup
Plainfield Village
Putnam
Quinebaug
South Windham
South Woodstock
Wauregan
Willimantic

Explore water-system records Find water-testing resources

View ZIP areas and understand coverage

06226Willimantic
06234East Brooklyn
06235
06239Danielson
06241Dayville
06242
06243
06247
06255Quinebaug
06256Willimantic
06258
06259
06260Putnam
06262Quinebaug
06263
06264
06266South Windham
06277Mechanicsville
06278Lake Chaffee
06280South Windham
06281South Woodstock
06282Lake Bungee
06331
06332
06354Moosup
06373
06374Plainfield Village
06377
06387Wauregan

These Census ZIP Code Tabulation Areas are grouped here by their largest county overlap. A ZIP area can cross county lines and contain several water suppliers or private wells. Place labels reflect Census geography, not verified postal city names or utility service boundaries.

Records for these areas are currently presented in this county overview rather than individual ZIP reports. An unpublished report does not mean there are no water records. Confirm your supplier on your water bill; if you use a private well, testing your own well is the relevant next step.

Beyond this county page

Keep reading. Compare nearby.

PFASChoosing a PFAS filterPFAS was found in all 3 systems EPA surveyed here. See how to check a filter’s certified PFAS reduction.LeadChoosing a lead filter16 systems here have reached the lead action level. See how to check a filter’s lead-reduction certification.Your utilityFind your annual water reportConfirm the supplier on your bill, then read its Consumer Confidence Report for local results.

Counties near Windham County

All Connecticut counties

Sources and scope

EPA UCMR 5 occurrence data, samples collected 2023-01-03 – 2026-06-17, final release, August 2026 (file dated Aug 28, 2026); EPA SDWIS via ECHO, 2026Q2 extract (file dated Jul 9, 2026); EPA service-area boundaries v3.0; Census 2020 ZCTAs. Database prepared 2026-09-03.

Counts cover the systems that report this county to EPA. A water system may cross county lines. "Found" means at least one result at or above the laboratory reporting level; it is not a compliance finding.

Compiled by Tap Water Lookup from the sources identified on this page. Read the methodology and review process.