County · New York

Jefferson County, New York: drinking water records

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

Explore EPA records for 57 community water systems across 38 ZIP codes in Jefferson County, then find water-testing resources and available recent monitoring-station readings.

In focus57Community 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 4 of the 57 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 57 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
Fort Drum NY2212214	34,000	180	6	2	0.4 ppbbelow the action level
Watertown City NY2202346	27,861	120	2	13	6.3 ppbbelow the action level
Carthage Village NY2202334	3,600	120	0	6	0 ppbbelow the action level
Leray Town WD 1, 2, 4 NY2221206	7,140	240	1	0	3.3 ppbbelow the action level
Pamelia Town WD 4 & 5 NY2230066	1,857	0	0	19	4.1 ppbbelow the action level
Philadelphia Village NY2202341	1,800	0	0	1	1.5 ppbbelow the action level
West Carthage Village NY2202349	1,734	0	0	7	4.6 ppbbelow the action level
Dexter Village NY2202337	1,100	0	0	7	3 ppbbelow the action level
Watertown Town WD 3 & 4 & 5 NY2202352	750	0	0	8	3 ppbbelow the action level
Hounsfield WD 2 NY2230094	725	0	0	2	3.3 ppbbelow the action level
Champion WD 2, 4 & 5 NY2230022	650	0	0	3	1.1 ppbbelow the action level
Watertown Town WD 1 & 2 NY2202348	600	0	0	2	3 ppbbelow the action level
Hounsfield WD 1, 5 NY2221870	480	0	0	7	2.4 ppbbelow the action level
Wilna T WD 1 NY2230095	240	0	0	15	4.6 ppbbelow the action level
Southside Water INC. NY2221333	195	0	0	2	3 ppbbelow the action level
Pamelia Town WD #2 NY2230075	150	0	0	11	3.1 ppbbelow the action level
Cold Creek Studios NY2202257	90	0	0	1	0 ppbbelow the action level
Danc (Watertown / Ft. Drum) NY2230013	0	0	0	3	3 ppbbelow the action level
Cape Vincent Town WD 1 & 5 NY2230018	2,600	0	0	0	3.7 ppbbelow the action level
Sackets Harbor Village NY2202343	2,200	0	0	0	1.2 ppbbelow the action level
Clayton Village NY2202335	2,100	0	0	0	2.1 ppbbelow the action level
Adams Village NY2202328	2,000	0	0	0	4.3 ppbbelow the action level
Alexandria Bay Village NY2202329	1,900	0	0	0	2.6 ppbbelow the action level
Black River Village NY2202331	1,600	0	0	0	6.3 ppbbelow the action level
Cape Vincent Village NY2202333	1,500	0	0	0	12.7 ppbbelow the action level
Ellisburg WD 1, 2 & 3 NY2230099	1,500	0	0	0	3.9 ppbbelow the action level
Rutland Town WD 1 NY2230102	1,500	0	0	0	4.2 ppbbelow the action level
Brownville Village NY2202332	1,200	0	0	0	7.4 ppbbelow the action level
Adams T WD 1,2,3 (Adams Center) NY2202351	1,000	0	0	0	5.2 ppbbelow the action level
Theresa Village NY2202344	950	0	0	0	4.3 ppbbelow the action level
Antwerp Village NY2202330	900	0	0	0	2.4 ppbbelow the action level
Orleans Town WD 1 (Lafargeville) NY2215918	750	0	0	0	6.3 ppbbelow the action level
Henderson Town WD 1,2 NY2230027	700	0	0	0	3.3 ppbbelow the action level
Orleans Town WD 2 (Rt 12) NY2230132	690	0	0	0	0 ppbbelow the action level
Evans Mills Village NY2202338	644	0	0	0	2.2 ppbbelow the action level
Chaumont Village NY2202350	625	0	0	0	2 ppbbelow the action level
Brownville (T) WD #1 NY2235001	600	0	0	0	5 ppbbelow the action level
Wellesley Island Water Corp. NY2220914	548	0	0	0	2.5 ppbbelow the action level
Northland Estates NY2201395	540	0	0	0	2.4 ppbbelow the action level
Glen Park Village NY2230028	500	0	0	0	7.3 ppbbelow the action level
Mannsville Village NY2202340	450	0	0	0	2 ppbbelow the action level
Deferiet Village NY2202336	420	0	0	0	6 ppbbelow the action level
Champion WD 1 (Great Bend) NY2230021	400	0	0	0	9.1 ppbbelow the action level
Lyme Town WD 2 NY2235000	400	0	0	0	2 ppbbelow the action level
Northwoods Estates NY2220874	315	0	0	0	2.4 ppbbelow the action level
Indian River Estates, Ltd. NY2222513	303	0	0	0	1 ppbbelow the action level
Wilna T WD 2 NY2230096	200	0	0	0	2.7 ppbbelow the action level
Rodman Town WD 1 NY2202347	180	0	0	0	1.2 ppbbelow the action level
Brownville (T) WD #2 NY2230145	140	0	0	0	1.4 ppbbelow the action level
Lyme Town WD 1 & 4 NY2230085	70	0	0	0	2 ppbbelow the action level
Alexandria Town WD #1 - Otter Street NY2202356	60	0	0	0	3.3 ppbbelow the action level
Riverwood Estates NY2222606	30	0	0	0	1.1 ppbbelow the action level
Danc Western Regional NY2230023	0	0	0	0	3.7 ppbbelow the action level
Cape Vincent Town WD 3, 4, & 6 NY2230110	770	0	0	0	not reported
Alexandria Town WD #2 - Redwood NY2230107	500	0	0	0	not reported
Leray Town WD 3 NY2230105	480	0	0	0	not reported
Hounsfield WD 3 (Wescott Beach) NY2230115	270	0	0	0	not reported

USGS · Monitoring stations

The water, more recently.

Available station readings in Jefferson County, New York. 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 Jefferson County

38ZIP 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

Adams
Adams Center
Alexandria Bay
Antwerp
Belleville
Black River
Brownville
Calcium
Cape Vincent
Chaumont
Clayton
Deferiet
Depauville
Dexter
Ellisburg
Felts Mills
Fishers Landing
Fort Drum
Great Bend
Henderson
Lorraine
Mannsville
Philadelphia
Pierrepont Manor
Plessis
Redwood
Rodman
Sackets Harbor
Theresa
Thousand Island Park
Three Mile Bay
Watertown

Explore water-system records Find water-testing resources

View ZIP areas and understand coverage

13601Watertown
13602Fort Drum
13603Fort Drum
13605Adams
13606Adams Center
13607Alexandria Bay
13608Antwerp
13611Belleville
13612Black River
13615Brownville
13616Calcium
13618Cape Vincent
13619Great Bend
13622Chaumont
13624Clayton
13628Deferiet
13632Depauville
13634Dexter
13636Ellisburg
13637Calcium
13638Felts Mills
13640Fishers Landing
13641Fishers Landing
13643Great Bend
13650Henderson
13651
13656Depauville
13659Lorraine
13661Mannsville
13673Philadelphia
13674Pierrepont Manor
13675Plessis
13679Redwood
13682Rodman
13685Sackets Harbor
13691Theresa
13692Thousand Island Park
13693Three Mile Bay

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 3 of the 4 systems EPA surveyed here. See how to check a filter’s certified PFAS reduction.LeadChoosing a lead filter8 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 Jefferson County

All New York 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.