Public water system · NH0851010

Active

Franklin Water Works

At a glance

Franklin Water Works (PWSID NH0851010) is an active community water system in Merrimack County, New Hampshire. It reports serving 7,200 people through 2,500 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in July 2014.

Dataset updated October 2026 . Source: EPA SDWIS/ECHO public records.

Population served

7,200

Service connections

2,500

Primary source

Groundwater

System type

CWS

Community water system

System record

PWSIDNH0851010

System typeCommunity water system

Activity statusActive

Population served7,200

Service connections2,500

Primary water sourceGroundwater

Owner typeLocal government

Primacy agencyNH state drinking water program

City servedFranklin

StateNew Hampshire

ZIP—

CountyMerrimack County

How does Franklin Water Works compare with other water systems in Merrimack County?

By EPA's size categories, Franklin Water Works is a medium system (3,301 to 10,000 people). Merrimack County has 244 active public water systems, and Franklin Water Works is the 2nd-largest of them by population served. Its population served is about 14 times the county average of 509 people per system, and accounts for 5.8% of the 124,152 people reported by systems filed under the county. Across New Hampshire, the 2,450 active systems average 508 people each. Nationally, the average active community water system reports serving 6,703 people, so Franklin Water Works is roughly in line with that figure.

What does “community water system” mean?

A community water system serves at least 15 connections used by year-round residents, or regularly serves at least 25 year-round residents. Homes, apartments and mobile-home parks are served by these. New Hampshire has 706 active community water systems, 29% of the state's 2,450 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 2,374 New Hampshire systems (97%) list groundwater as their primary source.

Who owns and regulates Franklin Water Works?

EPA lists Franklin Water Works as owned by a local government. The NH state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 40 of the 244 active systems in Merrimack County (16%) are also owned by a local government.

Does Franklin Water Works have drinking water violations?

Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in July 2014. The violations listed here began between January 1995 and July 2014. By type: 10 monitoring and reporting, 1 public notice, recordkeeping or other and 1 contaminant level above the legal limit. The contaminants or rules involved are Haloacetic acids (HAA5), Total trihalomethanes (TTHM), Consumer Confidence Rule and Total coliform bacteria (TCR). EPA lists 12 as resolved. Resolved means at least one resolving action is on record: the system returned to compliance, the rule no longer applies, or no further action was needed.

Began	Violation	Contaminant or rule	Health-based	Status
2014-07-01	Monitoring and reportingMonitoring and Reporting (DBP) · code 27	Haloacetic acids (HAA5)code 2456	No	Resolved
2014-07-01	Monitoring and reportingMonitoring and Reporting (DBP) · code 27	Total trihalomethanes (TTHM)code 2950	No	Resolved
2007-07-01	Public notice, recordkeeping or otherConsumer Confidence Report Inadequate Reporting · code 72	Consumer Confidence Rulecode 7000	No	Resolved
2000-08-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22	Total coliform bacteria (TCR)code 3100	Yes	Resolved
1995-01-01	Monitoring and reportingMonitoring, Regular · code 03	Carbon tetrachloridecode 2982	No	Resolved
1995-01-01	Monitoring and reportingMonitoring, Regular · code 03	1,2-Dichloropropanecode 2983	No	Resolved
1995-01-01	Monitoring and reportingMonitoring, Regular · code 03	1,2-Dichloroethanecode 2980	No	Resolved
1995-01-01	Monitoring and reportingMonitoring, Regular · code 03	Ethylbenzenecode 2992	No	Resolved
1995-01-01	Monitoring and reportingMonitoring, Regular · code 03	Hexachlorocyclopentadienecode 2042	No	Resolved
1995-01-01	Monitoring and reportingMonitoring, Regular · code 03	Benzo(a)pyrenecode 2306	No	Resolved
1995-01-01	Monitoring and reportingMonitoring, Regular · code 03	Pentachlorophenolcode 2326	No	Resolved
1995-01-01	Monitoring and reportingMonitoring, Regular · code 03	Toluenecode 2991	No	Resolved

The 12 most recent violations in EPA's records, newest first.Labels and codes come from EPA's SDWIS reference tables. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found. "Health-based" marks violations of a legal limit or required treatment.

Franklin Water Works: frequently asked questions

Who runs Franklin Water Works?

Franklin Water Works (PWSID NH0851010) is a community water system owned by a local government. It is regulated by the NH state drinking water program.

How many people does Franklin Water Works serve?

Franklin Water Works reports serving 7,200 people through 2,500 service connections in Merrimack County, New Hampshire.

Where does Franklin Water Works get its water?

EPA SDWIS lists this system's primary water source as groundwater. Groundwater means the system draws its water from wells or springs fed by underground aquifers.

Does Franklin Water Works have any drinking water violations?

Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in July 2014. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found.

Is Franklin Water Works' water safe to drink?

AquaCensus shows EPA compliance records, not current water test results, so it cannot say whether the water is safe at a given moment. Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in July 2014. For current results, consult the system's annual water quality report, EPA ECHO, or the NH state drinking water program.

Where can I find Franklin Water Works' water quality report?

As a community water system, Franklin Water Works must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1 each year, covering the previous calendar year. The system can provide a copy on request.

Other water systems in Merrimack County

Water system	County	Population served	Type	Source
Concord Water Dept	Merrimack	44,215	Community	Surface water
Pembroke Water Works	Merrimack	5,200	Community	Groundwater
Central Hooksett Water Pct	Merrimack	4,650	Community	Purchased surface water
Penacook Boscawen Water Pct	Merrimack	3,800	Community	Groundwater
New London Springfield Water	Merrimack	3,250	Community	Groundwater
Hooksett Village Water Pct	Merrimack	3,000	Community	Groundwater

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About this data

Source: U.S. EPA Safe Drinking Water Information System (SDWIS) and SDWA violation records, via EPA ECHO, as published October 1, 2026 — AquaCensus refreshes it quarterly. See the methodology for how records are matched, cleaned and scored.

Cite as: AquaCensus, “Franklin Water Works, PWSID NH0851010, New Hampshire”, https://aquacensus.com/water-systems/new-hampshire/franklin-water-works-nh0851010 (data as of October 1, 2026).