PlainWater
States → New Hampshire

MANCHESTER WATER WORKS

PWS ID: NH1471010 · MANCHESTER, New Hampshire 03103

MANCHESTER WATER WORKS serves 123,500 people in MANCHESTER, New Hampshire using Surface Water water sources. It has 6 recorded EPA violations, including 4 health-based violations. PFAS "forever chemicals" were detected in UCMR5 testing (1 compound found).

Water Quality Snapshot: MANCHESTER WATER WORKS

MANCHESTER WATER WORKS is a local-owned community water system that delivers drinking water to 123,500 residents in MANCHESTER, New Hampshire (Hillsborough County) through 32,061 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 6 total violations for this system , of which 4 (67%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 2 monitoring and reporting violations are on file. The most recent violation on record dates to 2013.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 4 violations (MCL, health-based). Under EPA's UCMR5 PFAS monitoring program, 1 PFAS compound was detected in samples collected from this system, with a maximum reported concentration of 0.005 ppt. PFAS are persistent synthetic chemicals linked to health effects at very low exposure levels.

Across New Hampshire, EPA tracks 2,453 public water systems serving 1,242,123 people, with 155,970 cumulative violations and 29,649 health-based violations on record. About 90% of systems in the state carry at least one violation, and state-wide the average per system is 63.6 violations. MANCHESTER WATER WORKS's 6 violations sit below the New Hampshire average. Statewide, 23 of 51 UCMR5-tested systems have reported PFAS detections (45.1%). All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.

PFAS Detected

1 PFAS "forever chemicals" detected in testing under EPA's UCMR5 monitoring program.

Population Served
123,500
Total Violations
6
Health-Based Violations
4
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Local
Connections
32,061
County
Hillsborough
School/Daycare
No
MCL Violations
4
Monitoring Violations
2
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MCL 4 2013
Surface Water Treatment Rule MR 2 2006

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 4 of 120 samples detected PFAS.

Contaminant Date Result MRL Status
lithium 9/19/2023 <9 µg/L 9 µg/L Not Detected
PFPeS 6/22/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFDA 6/22/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFDoA 6/22/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFHxA 6/22/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFUnA 6/22/2023 <0.002 µg/L 0.002 µg/L Not Detected
6:2 FTS 6/22/2023 <0.005 µg/L 0.005 µg/L Not Detected
NFDHA 6/22/2023 <0.02 µg/L 0.02 µg/L Not Detected
PFOA 6/22/2023 0.0040 µg/L 0.004 µg/L Detected
PFHpS 6/22/2023 <0.003 µg/L 0.003 µg/L Not Detected
8:2 FTS 6/22/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFMPA 6/22/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFPeA 6/22/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFMBA 6/22/2023 <0.003 µg/L 0.003 µg/L Not Detected
lithium 6/22/2023 <9 µg/L 9 µg/L Not Detected
4:2 FTS 6/22/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFTA 6/22/2023 <0.008 µg/L 0.008 µg/L Not Detected
11Cl-PF3OUdS 6/22/2023 <0.005 µg/L 0.005 µg/L Not Detected
9Cl-PF3ONS 6/22/2023 <0.002 µg/L 0.002 µg/L Not Detected
ADONA 6/22/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFEESA 6/22/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFBA 6/22/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFOS 6/22/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFTrDA 6/22/2023 <0.007 µg/L 0.007 µg/L Not Detected
NEtFOSAA 6/22/2023 <0.005 µg/L 0.005 µg/L Not Detected
NMeFOSAA 6/22/2023 <0.006 µg/L 0.006 µg/L Not Detected
PFBS 6/22/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFHpA 6/22/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFHxS 6/22/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFNA 6/22/2023 <0.004 µg/L 0.004 µg/L Not Detected
HFPO-DA 6/22/2023 <0.005 µg/L 0.005 µg/L Not Detected
9Cl-PF3ONS 3/8/2023 <0.002 µg/L 0.002 µg/L Not Detected
PFBA 3/8/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFHpA 3/8/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFBS 3/8/2023 <0.003 µg/L 0.003 µg/L Not Detected
NMeFOSAA 3/8/2023 <0.006 µg/L 0.006 µg/L Not Detected
PFOS 3/8/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFOA 3/8/2023 0.0040 µg/L 0.004 µg/L Detected
PFTrDA 3/8/2023 <0.007 µg/L 0.007 µg/L Not Detected
PFDA 3/8/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFDoA 3/8/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFHxA 3/8/2023 <0.003 µg/L 0.003 µg/L Not Detected
11Cl-PF3OUdS 3/8/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFTA 3/8/2023 <0.008 µg/L 0.008 µg/L Not Detected
PFHxS 3/8/2023 <0.003 µg/L 0.003 µg/L Not Detected
HFPO-DA 3/8/2023 <0.005 µg/L 0.005 µg/L Not Detected
lithium 3/8/2023 <9 µg/L 9 µg/L Not Detected
PFUnA 3/8/2023 <0.002 µg/L 0.002 µg/L Not Detected
6:2 FTS 3/8/2023 <0.005 µg/L 0.005 µg/L Not Detected
4:2 FTS 3/8/2023 <0.003 µg/L 0.003 µg/L Not Detected

Verify This Water System

The figures above are aggregated from EPA's public databases. To verify the underlying records — or to file a complaint, request a Consumer Confidence Report, or check current monitoring status — go directly to the federal and state regulators that enforce the Safe Drinking Water Act for MANCHESTER WATER WORKS.

Federal Source of Truth

EPA SDWIS — Federal Reports

EPA's Safe Drinking Water Information System (SDWIS) holds the federal compliance record for every regulated public water system. Open the system-level report by PWS ID:

View PWS ID NH1471010 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

New Hampshire Drinking Water Authority

New Hampshire's primacy agency administers the Safe Drinking Water Act locally. Search EPA SDWIS for the current state contact, or use the state's public health or environment department portal.

Find NH regulator via EPA SDWIS

Violation Timeline

Each row links to the EPA SDWIS public record for verification. Cross-reference the contaminant code on EPA's federal report to see violation dates, return-to-compliance status, and enforcement actions.

Year (latest) Contaminant Category Count EPA Record
2013 Coliform (TCR) MCL 4 SDWIS / NH1471010 / 3100
2006 Surface Water Treatment Rule MR 2 SDWIS / NH1471010 / 0200

How MANCHESTER WATER WORKS Compares

Cross-reference this system's record against state averages and the federal MCL framework for context.

Metric MANCHESTER WATER WORKS New Hampshire avg Federal benchmark
Total violations 6 63.6 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 4 12.1 Indicates a contaminant exceeded a federal MCL
PFAS detection 1 compound 45.1% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 123,500 506 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 2,453 regulated public water systems in New Hampshire.

Federal MCL reference — Safe Drinking Water Act thresholds ▼
Contaminant Federal MCL / Action Level Note
Lead 0 mg/L (Action Level: 0.015 mg/L) Lead and Copper Rule treatment technique
Arsenic 0.010 mg/L (10 ppb) Health-based MCL since 2006
Total Coliform Treatment technique (RTCR) Indicator organism, monitoring trigger
PFOA / PFOS (PFAS) 4.0 ppt each (final 2024 rule) Compliance deadline 2029
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is MANCHESTER WATER WORKS water safe to drink? ▼
MANCHESTER WATER WORKS (PWS ID: NH1471010) has 6 recorded violations in the EPA SDWIS database. PFAS contamination has been detected in UCMR5 testing, with 1 PFAS compound found. This system serves 123,500 people using Surface Water sources.
How many people does MANCHESTER WATER WORKS serve? ▼
MANCHESTER WATER WORKS serves 123,500 people in MANCHESTER, New Hampshire. It is a Local-owned system using Surface Water water sources with 32,061 service connections.
What type of violations does MANCHESTER WATER WORKS have? ▼
MANCHESTER WATER WORKS has 6 total violations: 4 health-based violations (MCL exceedances or treatment failures), 2 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in MANCHESTER WATER WORKS water? ▼
Yes. UCMR5 testing detected 1 PFAS compound in MANCHESTER WATER WORKS's water supply: PFOA. PFAS are persistent "forever chemicals" that do not break down in the environment.
What water source does MANCHESTER WATER WORKS use? ▼
MANCHESTER WATER WORKS uses Surface Water as its primary water source. It is classified as a Community Water System (CWS), serving residential populations year-round.
Where does this data come from? ▼
All data comes from the EPA Safe Drinking Water Information System (SDWIS) and the UCMR5 PFAS monitoring program. SDWIS tracks compliance for all public water systems regulated under the Safe Drinking Water Act.

Explore PlainWater

Water in New Hampshire

All systems in state
All States

Water quality by state
Contaminants

PFAS & other pollutants
Guides

Understanding water quality

Related Data for New Hampshire

Environmental Data → Natural Hazards → Air Quality → Healthcare Access → Climate Data →
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025. PFAS data from EPA UCMR5 monitoring program (2023-2025). This data is provided for informational purposes only.

Read our methodology — how this data is sourced, computed, and verified.

Related

Browse all → | Rankings →
Data sourced from $official public datasets. See our methodology for details. Retrieved and formatted by PlainWater Editorial