County · New Hampshire
Cheshire County, New Hampshire: drinking water records
Explore EPA records for 34 community water systems across 25 ZIP codes in Cheshire County, then find water-testing resources and available recent monitoring-station readings.
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 2 of the 34 listed systems in this snapshot. A system with no reported PFAS detection is not a test of every tap or every contaminant.
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 34 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 |
|---|---|---|---|---|---|
| Keene Water Dept NH1241010 | 30,000 | 240 | 0 | 0 | 0 ppbbelow the action level |
| Jaffrey Water Works NH1221010 | 3,800 | 240 | 3 | 0 | 0 ppbbelow the action level |
| West Swanzey Water NH2301020 | 430 | 0 | 0 | 1 | 20 ppbat or above the action level |
| Cheshire County Complex NH2494010 | 380 | 0 | 0 | 2 | 32 ppbat or above the action level |
| Surry Village Water NH2281010 | 50 | 0 | 0 | 1 | 17 ppbat or above the action level |
| 20 Jaffrey Rd NH0823010 | 32 | 0 | 0 | 2 | 25 ppbat or above the action level |
| Troy Water Works NH2361010 | 1,200 | 0 | 0 | 0 | 37 ppbat or above the action level |
| Pine Grove Mobile Home Park NH2303010 | 305 | 0 | 0 | 0 | 64 ppbat or above the action level |
| View Point Coop NH2303020 | 248 | 0 | 0 | 1 | not reported |
| Monadnock Tenants NH1993010 | 200 | 0 | 0 | 0 | 126 ppbat or above the action level |
| Green Valley Mobile Home Park NH2533020 | 127 | 0 | 0 | 1 | not reported |
| Eastfield Crossing NH2302040 | 113 | 0 | 0 | 0 | 21 ppbat or above the action level |
| Ashuelot River Apts NH2302010 | 100 | 0 | 0 | 0 | 19 ppbat or above the action level |
| Fitzwilliam Village/Laughner NH0821020 | 65 | 0 | 0 | 0 | 53 ppbat or above the action level |
| Well Hill NH0053010 | 60 | 0 | 0 | 0 | 33 ppbat or above the action level |
| Hampshire Court Water NH1992040 | 50 | 0 | 0 | 0 | 18 ppbat or above the action level |
| Fitzwilliam Village/Prigge NH0821010 | 43 | 0 | 0 | 1 | not reported |
| Papermill Village NH0052010 | 24 | 0 | 0 | 1 | not reported |
| Winchester Water Dept NH2531010 | 2,800 | 0 | 0 | 0 | not reported |
| North Hinsdale Water Dept NH1151010 | 1,800 | 0 | 0 | 0 | not reported |
| N Swanzey Water and Fire Prct NH2301010 | 1,700 | 0 | 0 | 0 | not reported |
| Hinsdale Water Dept/Downtown NH1151020 | 1,600 | 0 | 0 | 0 | not reported |
| Walpole Water Dept NH2401010 | 1,057 | 0 | 0 | 0 | not reported |
| Marlborough Water Works NH1481010 | 750 | 0 | 0 | 0 | not reported |
| N Walpole Village District/Low NH2401020 | 625 | 0 | 0 | 0 | not reported |
| Forest View Estates NH2302050 | 180 | 0 | 0 | 0 | not reported |
| South Parrish NH2533010 | 140 | 0 | 0 | 0 | not reported |
| N Walpole Village Dist/High NH2401030 | 125 | 0 | 0 | 0 | not reported |
| Marlborough Estates NH1482010 | 100 | 0 | 0 | 0 | not reported |
| Dunbar Properties NH1992020 | 60 | 0 | 0 | 0 | not reported |
| Payson Village NH1992070 | 54 | 0 | 0 | 0 | not reported |
| Fitzwilliam Village/Massin NH0821030 | 53 | 0 | 0 | 0 | not reported |
| Carriage Apts NH1992050 | 43 | 0 | 0 | 0 | not reported |
| Residential Camp Monadnock NH1227070 | 28 | 0 | 0 | 0 | not reported |
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. 12 systems in this table are at or above it. What an action level means
USGS · Monitoring stations
The water, more recently.
Available station readings in Cheshire County, New Hampshire. 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.
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.
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.
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.
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 reportsResource 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 Cheshire County
25ZIP 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
- Hinsdale
- Jaffrey
- Keene
- Marlborough
- North Walpole
- Troy
- Walpole
- West Swanzey
- Winchester
View ZIP areas and understand coverage
- 03431Keene
- 03441
- 03443
- 03444
- 03445
- 03446West Swanzey
- 03447
- 03448
- 03450
- 03451Hinsdale
- 03452Jaffrey
- 03455Marlborough
- 03456
- 03457
- 03461
- 03462
- 03464
- 03465Troy
- 03466
- 03467
- 03470Winchester
- 03602
- 03604
- 03608Walpole
- 03609North Walpole
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.
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.