County · New Hampshire

Merrimack County, New Hampshire: drinking water records

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

Explore EPA records for 63 community water systems across 28 ZIP codes in Merrimack County, then find water-testing resources and available recent monitoring-station readings.

In focus63Community 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 6 of the 63 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 63 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
Concord Water Dept NH0501010	44,215	120	0	0	1 ppbbelow the action level
Franklin Water Works NH0851010	7,200	240	0	0	3 ppbbelow the action level
Pembroke Water Works NH1861010	5,200	240	2	0	0 ppbbelow the action level
Central Hooksett Water Pct NH1181010	4,650	120	2	0	1 ppbbelow the action level
Penacook Boscawen Water Pct NH0251010	3,800	180	0	0	0 ppbbelow the action level
New London Springfield Water NH1721010	3,250	60	0	0	30 ppbat or above the action level
Contoocook Village Pct NH1191010	1,600	0	0	24	37 ppbat or above the action level
Andover Village Dist NH0081010	650	0	0	7	56 ppbat or above the action level
Epsom Healthcare Ctr NH0774010	240	0	0	9	27 ppbat or above the action level
Abenaki Water/White Rock Water NH0262020	238	0	0	9	160 ppbat or above the action level
Hopkinton Village Pct NH1191020	215	0	0	2	280 ppbat or above the action level
Liberty Ridge MHP NH1123020	91	0	0	1	23 ppbat or above the action level
Elm Brook Village NH1193020	90	0	0	5	21 ppbat or above the action level
Soda Brook NH1763010	64	0	0	1	53 ppbat or above the action level
Robinsons Mhp/Upper NH0453020	55	0	0	1	16 ppbat or above the action level
Cogswell Springs Water Works NH1121010	3,000	0	0	0	19 ppbat or above the action level
Tilton Northfield Water Dist NH2351010	2,500	0	0	0	36 ppbat or above the action level
Pittsfield Aqueduct NH1911010	1,625	0	0	0	70 ppbat or above the action level
Bear View Crossing NH0043050	800	0	0	0	60 ppbat or above the action level
Epsom Village Water District NH0771010	800	0	0	0	23 ppbat or above the action level
Warner Village Water Dist NH2411010	660	0	0	0	16 ppbat or above the action level
Hill Water Works NH1131010	600	0	0	0	19 ppbat or above the action level
Catamount Hill NH0043040	383	0	0	3	not reported
Freedom Hill/Pine Ridge Est NH1403030	370	0	0	8	not reported
Pleasant Pond Coop and Cmpgrnd NH2413010	218	0	0	1	not reported
Chalk Pond Water NH1652020	208	0	0	0	22 ppbat or above the action level
Smythe Woods NH1182040	168	0	0	0	122 ppbat or above the action level
Sheltering Pines MHP NH0773030	125	0	0	0	24 ppbat or above the action level
Highlands Village District NH1762010	95	0	0	0	38 ppbat or above the action level
Evergreen Drive Water NH0262010	80	0	0	1	not reported
Cottages at Windchimes NH0262040	75	0	0	0	44 ppbat or above the action level
Meadow Brook NH0774030	75	0	0	2	not reported
Pillsbury Lake/Franklin Pierce NH2462040	75	0	0	1	not reported
Griggs Mobile Homes NH1913010	73	0	0	5	not reported
Kings Grant NH0771020	71	0	0	1	not reported
Colby Brook Estates NH0773020	68	0	0	0	25 ppbat or above the action level
Presidential Pines/Upper NH1403020	60	0	0	1	not reported
Newbury Elderly Housing NH1652050	51	0	0	1	not reported
Presidential Pines/Lower NH1403040	51	0	0	0	31 ppbat or above the action level
Bella Brook Water NH0262030	50	0	0	0	53 ppbat or above the action level
Fisherfield Townhouses NH0272010	40	0	0	0	381 ppbat or above the action level
Canterbury Crossings NH1767020	35	0	0	0	43 ppbat or above the action level
Meeting House Water NH1862010	35	0	0	0	28 ppbat or above the action level
Borough Rd Apartments NH1862030	30	0	0	1	not reported
Flintlock Apts NH1402010	30	0	0	2	not reported
Hooksett Village Water Pct NH1181020	3,000	0	0	0	not reported
Kings Towne MHP NH0773010	350	0	0	0	not reported
Villages at Loudon NH1402020	250	0	0	0	not reported
Olde Towne NH0043020	243	0	0	0	not reported
Wesco Utilities NH1182050	210	0	0	0	not reported
The Meadows NH1193010	200	0	0	0	not reported
Slope N Shore Club NH1722020	180	0	0	0	not reported
Seasons at Lake Sunapee NH1722010	153	0	0	0	not reported
Bow Municipal Water System NH0261010	150	0	0	0	not reported
Deer Meadows NH1193030	150	0	0	0	not reported
Kos Manufactured Housing Cmnty NH1403010	137	0	0	0	not reported
White Rock Senior Living NH0262050	120	0	0	0	not reported
Stone Sled Farm NH0262060	113	0	0	0	not reported
Pillsbury Lake/Peninsula NH2462050	90	0	0	0	not reported
Pound Road Water Works NH2512010	53	0	0	0	not reported
Voa/Nne Senior Housing NH1402030	50	0	0	0	not reported
Cross Mill Village NH1762020	28	0	0	0	not reported
Canterbury Spruces Housing NH0374010	25	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. 28 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 Merrimack 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.

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 Merrimack County

28ZIP 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

Blodgett Landing
Bradford
Concord
Contoocook
Franklin
Henniker
Loudon
New London
Pittsfield
South Hooksett
Suncook
Tilton Northfield
Warner

Explore water-system records Find water-testing resources

View ZIP areas and understand coverage

03046
03106South Hooksett
03216
03221Bradford
03224Concord
03229Contoocook
03230
03231
03233
03234
03235Franklin
03242Henniker
03243
03255Blodgett Landing
03257New London
03258
03260
03263Pittsfield
03268
03273
03275Suncook
03276Tilton Northfield
03278Warner
03287
03301Concord
03303Concord
03304
03307Loudon

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 2 of the 6 systems EPA surveyed here. See how to check a filter’s certified PFAS reduction.LeadChoosing a lead filter32 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 Merrimack County

All New Hampshire 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.