What is the Munimetric score for New Hampshire?

Munimetric assigns a state-level average MISI score based on the individual scores of all covered community water systems in New Hampshire. The state average, band distribution, and market-level rankings are shown on this page. Higher MISI values indicate greater structural stress.

Which water systems in New Hampshire face the most infrastructure stress?

The state page ranks the highest-stress systems in New Hampshire by MISI score. Stress reflects operational burden, capital gaps, revenue fragility, rate affordability constraints, and governance risk, not a single compliance event. The headline remains a blended structural stress composite rather than a pure physical-condition index. Workflow actions remain reserved for account access.

How does New Hampshire compare to other states for drinking water infrastructure risk?

New Hampshire is compared against all 50 states and territories using average MISI score, market count, and band distribution. Munimetric tracks nationwide coverage across 9,000+ scored service markets.

Are there lead pipe or corrosion-related concerns in New Hampshire water systems?

Where lead and copper rule compliance data is available from EPA SDWA records, Munimetric factors it into the Operational Stress family score. Specific lead service line inventories vary by system. Individual system profiles contain the most detailed compliance context available.

Does Munimetric include PFAS monitoring context for New Hampshire water systems?

Munimetric summarizes stored PFAS monitoring context where public contaminant-monitoring records are available. Missing PFAS summaries remain missing records, not non-detections, and this public-record layer does not change the MISI score by itself.

What compliance signals are active in New Hampshire?

Munimetric tracks signals such as compliance escalation, monitoring and reporting failures, population decline, income erosion, data staleness, and parent-government fiscal stress across New Hampshire water systems.

Does Munimetric track boil water advisories in New Hampshire?

Munimetric does not track real-time boil water advisories. For current advisories, contact your local water utility or state drinking water program. Munimetric monitors structural conditions that provide context around system reliability over time.

How many covered systems in New Hampshire have recent recorded drinking-water violations?

Stored public records show 11 covered systems with recent drinking-water violations, with 72 recorded violations across 42 covered systems in the recent 3 years window.

How does Munimetric summarize PFAS public-record context in New Hampshire?

Stored contaminant-monitoring summaries are present for 39 covered systems; 16 systems have PFAS detection context in this state summary.

How does Munimetric summarize lead & copper context in New Hampshire?

Stored lead & copper summaries are present for 40 covered systems; 37 systems have violation or action-level context in this state summary.

What source-water types are represented across covered New Hampshire systems?

Stored identity records group covered New Hampshire systems by source-water type: Surface water: 24, Groundwater: 18.

Where can I find official drinking-water records for New Hampshire?

The Official records drawer lists Public drinking-water profile, Contaminant monitoring records links where currently available for New Hampshire.

Is this a real-time statewide tap-water condition rating?

No. This is not a real-time tap-water condition determination. Munimetric summarizes stored public-record context for research and navigation, and this layer does not change MISI.

States / New Hampshire

New Hampshire

Name: New Hampshire Drinking Water Infrastructure Stress Data
Creator: Munimetric
License: https://munimetric.com/terms

Statewide Munimetric profile for New Hampshire, covering drinking-water market scores, signal activity, infrastructure stress context, and population insights across 42 scored service markets serving approximately 711,044 people. This state profile highlights what is happening and why it matters using water-system, fiscal, capital, and signal context.

New Hampshire has an average MISI infrastructure stress score of 19.8/100 in the Stable band as of 2026-07-01. Public records summarize recent drinking-water violations, PFAS monitoring records, lead and copper context, and source-water mix across 42 covered systems. Updated May 2026.

National context

States sized by scored-market count. Color reflects average stress band.

42Markets scored

19.8Headline composite

~711KPop. served

167Active signals

Band distribution (MISI)

State headline composite

Component of current headline composite

Infrastructure Stress16.9 / 100

Physical, compliance, and capital-execution pressure reflected in the blended headline composite.

Socioeconomic Stress2.9 / 100

Affordability, demand-base, and parent-government fiscal pressure reflected in the blended headline composite.

Observability Stress0.0 / 100

Staleness, disclosure freshness, and reporting-visibility effects reflected in the blended headline composite.

19.8 headline compositeNew Hampshire state composite42 markets~711K people served

Exeter Water Dept37.7watch Dover Water Dept35.7watch Peterborough Water Works31.2watch Manchester Water Works29.0watch Aquarion Water/Nh28.3watch Salem Water Dept28.3watch Portsmouth Water Works28.0watch Rye Water Dist27.9watch Seabrook Water Dept26.3watch Milford Water Utilities Dept25.3watch Bristol Water Works25.1watch Derry Water Dept23.5watch Hudson Water Dept23.4watch Peu/Londonderry22.4watch Somersworth Water Works22.2watch Central Hooksett Water Pct21.4watch Jaffrey Water Works21.2watch Pembroke Water Works21.2watch Lebanon Water Dept20.8watch Berlin Water Works20.8watch Wolfeboro Water and Sewer20.8watch Claremont Water Dept19.6stable Rochester Water Dept19.5stable Unh/Durham Water Sys18.6stable Meredith Water Dept17.7stable North Conway Water Pct17.5stable Peu/Litchfield17.4stable Penacook Boscawen Water Pct17.2stable Pennichuck Water Works16.4stable Merrimack Village Dist15.3stable Laconia Water Works14.9stable Concord Water Dept14.8stable Franklin Water Works14.8stable Newmarket Water Works13.4stable Keene Water Dept11.2stable Nh Motor Speedway11.0stable Hanover Water Dept10.8stable Littleton Water and Light Dept10.8stable Plymouth Vil Water and Sewer10.8stable Gunstock Area7.4stable Lower Bartlett Water Pct7.2stable Newport Water Works4.0stable Exeter Water Dept37.7watch Dover Water Dept35.7watch Peterborough Water Works31.2watch Manchester Water Works29.0watch Aquarion Water/Nh28.3watch Salem Water Dept28.3watch Portsmouth Water Works28.0watch Rye Water Dist27.9watch Seabrook Water Dept26.3watch Milford Water Utilities Dept25.3watch Bristol Water Works25.1watch Derry Water Dept23.5watch Hudson Water Dept23.4watch Peu/Londonderry22.4watch Somersworth Water Works22.2watch Central Hooksett Water Pct21.4watch Jaffrey Water Works21.2watch Pembroke Water Works21.2watch Lebanon Water Dept20.8watch Berlin Water Works20.8watch Wolfeboro Water and Sewer20.8watch Claremont Water Dept19.6stable Rochester Water Dept19.5stable Unh/Durham Water Sys18.6stable Meredith Water Dept17.7stable North Conway Water Pct17.5stable Peu/Litchfield17.4stable Penacook Boscawen Water Pct17.2stable Pennichuck Water Works16.4stable Merrimack Village Dist15.3stable Laconia Water Works14.9stable Concord Water Dept14.8stable Franklin Water Works14.8stable Newmarket Water Works13.4stable Keene Water Dept11.2stable Nh Motor Speedway11.0stable Hanover Water Dept10.8stable Littleton Water and Light Dept10.8stable Plymouth Vil Water and Sewer10.8stable Gunstock Area7.4stable Lower Bartlett Water Pct7.2stable Newport Water Works4.0stable

State interpretation guide

How to read New Hampshire headline composite

Plain-language summary

New Hampshire currently shows an average MISI headline composite of 19.8 versus a national average of 24.5. In v0.1.2, the headline composite remains a blended structural stress measure rather than a pure physical-condition index. A frozen national reference and a 50 percent single-factor cap reduce the dominance of near-universal and very rare factors, while the component bars continue to separate infrastructure, socioeconomic, and observability readings.

Why this page stands out

42 scored systems are included in this state view, with explicit confidence and source-backed context.
State posture is benchmarked against national averages, not evaluated in isolation.
Top system links below connect state-level findings directly to profile-level diagnostics.

What to do next

Review the executive context to understand the state-level pressure pattern.
Open top system profiles to inspect what is actually driving stress at market level.
Use saved monitoring after research access is enabled to follow high-stress systems over time.

Priority New Hampshire paths

Public record layer

Statewide Water Quality Context

Stored public-record context for recent drinking-water violations, contaminant monitoring, and source-water mix across covered systems. This is not a tap-water safety determination and does not change the MISI score.

Systems with recent violations

11 of 42Systems with recent public violation rows.

Source-water mix42 systems

Surface water24
Groundwater18
Purchased water0
Mixed source0
Not stored0

Latest identity snapshot: Dec 31, 2025

Coverage

Violation, enforcement, and compliance-burden counts use the recent 3 years window for dated stored records.
Drinking-water identity snapshots are stored for 40 of 42 included scored systems.
PFAS monitoring summary records are stored for 39 of 42 included systems; missing records are not treated as non-detections.
Lead and copper summary records are stored for 40 of 42 included systems; missing records are not treated as absence of lead/copper context.

Water quality questionsDefinitions and public-record context

How many covered systems in New Hampshire have recent recorded drinking-water violations?: Stored public records show 11 covered systems with recent drinking-water violations, with 72 recorded violations across 42 covered systems in the recent 3 years window.
How does Munimetric summarize PFAS public-record context in New Hampshire?: Stored contaminant-monitoring summaries are present for 39 covered systems; 16 systems have PFAS detection context in this state summary.
How does Munimetric summarize lead & copper context in New Hampshire?: Stored lead & copper summaries are present for 40 covered systems; 37 systems have violation or action-level context in this state summary.
What source-water types are represented across covered New Hampshire systems?: Stored identity records group covered New Hampshire systems by source-water type: Surface water: 24, Groundwater: 18.
Where can I find official drinking-water records for New Hampshire?: The Official records drawer lists Public drinking-water profile, Contaminant monitoring records links where currently available for New Hampshire.
Is this a real-time statewide tap-water condition rating?: No. This is not a real-time tap-water condition determination. Munimetric summarizes stored public-record context for research and navigation, and this layer does not change MISI.

Official records

Public drinking-water profileEPA ECHO: Federal drinking-water dashboard and public-record search entry point.
Contaminant monitoring recordsEPA UCMR: Federal contaminant-monitoring program reference and public data entry point.

Methodology/source notes

Methodology/source notesDisplayed from stored public drinking-water records and official program references. This layer does not change MISI.
Enforcement historyEPA ECHO / SDWIS: Violation and enforcement counts are aggregated from stored public compliance records across covered systems.
Contaminant monitoring recordsEPA UCMR: PFAS context uses stored contaminant-monitoring summaries where available; missing records are not treated as non-detections.
State drinking-water programOfficial link not currently stored for this state program mapping.

Top recent compliance-burden systemsRecent 3 years

System	Population	Source water	Recent violations	Recent enforcement	Public-record flags
North Conway Water PctNH0511030	5,500	Groundwater	44	16	recent violations recorded, recent enforcement history, recent monitoring/reporting failures, lead/copper context
Meredith Water DeptNH1521010	3,750	Surface water	6	24	recent violations recorded, recent enforcement history, lead/copper context
Salem Water DeptNH2051010	21,000	Surface water	4	16	recent violations recorded, recent enforcement history, recent monitoring/reporting failures, PFAS detections in stored records, lead/copper context
Seabrook Water DeptNH2111010	14,000	Groundwater	4	16	recent violations recorded, recent enforcement history, recent monitoring/reporting failures, PFAS detections in stored records, lead/copper context
Aquarion Water/NhNH1051010	34,000	Groundwater	4	8	recent violations recorded, recent enforcement history, recent monitoring/reporting failures, PFAS detections in stored records, lead/copper context
Peterborough Water WorksNH1871010	4,500	Groundwater	3	6	recent violations recorded, recent enforcement history, recent monitoring/reporting failures, lead/copper context
Milford Water Utilities DeptNH1561010	9,500	Surface water	2	8	recent violations recorded, recent enforcement history, lead/copper context
Claremont Water DeptNH0461010	9,000	Surface water	2	8	recent violations recorded, recent enforcement history, lead/copper context

This is not a real-time tap-water condition determination. For current advisories or health guidance, consult the utility or state drinking-water program.

Executive context

What This Page Shows

42 of the community drinking-water systems in New Hampshire are currently scored. Analytics below are calculated from this covered subset only. Covered systems serve approximately 711K people.

What the Data Suggests

New Hampshire has 42 scored service markets in the Munimetric coverage set, covering roughly 711,044 residents in total. At the latest reading, the state-level average lands at 19.8 out of 100, indicating limited signs of structural stress in aggregate. No markets currently sit in elevated-stress bands.

Across state markets, Operational Stress (8.5 points average) and Capex Pressure (8.4) are the leading contributors to headline stress. The relatively close spacing suggests pressure is spread across more than one dimension.

167 active signals are recorded across state markets. The most prevalent is Climate Hazard Exposure, affecting 40 markets.

State-level average stress has been relatively steady between recent observation periods, suggesting the current picture reflects persistent conditions rather than a sudden shift.

This summary is based on structured, source-backed public data and is intended for research and monitoring only. It is not investment advice, a credit opinion, or municipal advisory guidance.

Recent Movement

Latest average MISI is 19.8 as of Jul 1, 2026. Movement since Jun 30, 2026 is flat.

Compact summary from 62 stored state observations.

State Family Contribution Summary

Operational Stress8.5 / 20.0

Capex Pressure8.4 / 20.0

Governance Risk1.8 / 20.0

Revenue Fragility1.0 / 20.0

Rate Constraint0.0 / 20.0

Signals

Signal Frequency

Signal	Severity	Markets affected	% of scored
Climate Hazard Exposure	medium	40	95%
Lead & Copper Rule Risk	high	37	88%
Current Drought Severity	medium	33	79%
PFAS Contamination Risk	high	16	38%
Parent-Government Fiscal Stress	high	16	38%
Compliance Escalation	high	13	31%
High-AGI Out-Migration	high	11	26%
Monitoring / Reporting Failures	medium	1	2%

Markets

Top Markets

#	Market	Score	Band	Population	Signals
1	Exeter Water Dept	37.7	Watch	12K	6
2	Dover Water Dept	35.7	Watch	29K	6
3	Peterborough Water Works	31.2	Watch	5K	5
4	Manchester Water Works	29.0	Watch	124K	6
5	Aquarion Water/Nh	28.3	Watch	34K	5
6	Salem Water Dept	28.3	Watch	21K	5
7	Portsmouth Water Works	28.0	Watch	33K	5
8	Rye Water Dist	27.9	Watch	4K	6
9	Seabrook Water Dept	26.3	Watch	14K	5
10	Milford Water Utilities Dept	25.3	Watch	10K	5
11	Bristol Water Works	25.1	Watch	4K	4
12	Derry Water Dept	23.5	Watch	17K	4
13	Hudson Water Dept	23.4	Watch	17K	5
14	Peu/Londonderry	22.4	Watch	5K	4
15	Somersworth Water Works	22.2	Watch	12K	5
16	Central Hooksett Water Pct	21.4	Watch	5K	4
17	Jaffrey Water Works	21.2	Watch	4K	5
18	Pembroke Water Works	21.2	Watch	5K	5
19	Lebanon Water Dept	20.8	Watch	10K	3
20	Berlin Water Works	20.8	Watch	10K	3

Comparison

State Comparison

National average: 24.5

Rank	State	Avg Score	Band	Markets	Delta vs State
41	North Dakota	20.1	Watch	29	+0.3
42	Tennessee	19.8	Stable	261	+0.1
43	New Hampshire	19.3	Stable	42	-0.4
44	Vermont	19.3	Stable	31	-0.5
45	Virginia	19.1	Stable	162	-0.7

Analytical posture

State Stress Analytics

Score Distribution

Distribution of scored market scores with the state average overlay.

42 markets plotted.

Stress vs Population

Each point is a scored market; tooltip reveals market-level context.

42 markets plotted.

Population View

People served by community water systems in New Hampshire, colored by stress band.

~711K people served by 42 systems in New Hampshire

Stable

Watch

Fragile

High Stress

Critical

42 scored systems · colored by stress band

Peer Constellation

Select a market to see its nearest peers by score similarity.

Center market:

24 nearest peers by score distance.

Score Trend

Latest

19.8

Trend

+19.8

Observations

Extended layers

Advanced State Context

Priority views, detailed registers, and methodology supporting the analytical core above.

Markets & signals

Priority Views

#	Market	Score	Band	Population	Signals
1	Exeter Water Dept	37.7	Watch	12K	6
2	Dover Water Dept	35.7	Watch	29K	6
3	Peterborough Water Works	31.2	Watch	5K	5
4	Manchester Water Works	29.0	Watch	124K	6
5	Aquarion Water/Nh	28.3	Watch	34K	5
6	Salem Water Dept	28.3	Watch	21K	5
7	Portsmouth Water Works	28.0	Watch	33K	5
8	Rye Water Dist	27.9	Watch	4K	6
9	Seabrook Water Dept	26.3	Watch	14K	5
10	Milford Water Utilities Dept	25.3	Watch	10K	5
11	Bristol Water Works	25.1	Watch	4K	4
12	Derry Water Dept	23.5	Watch	17K	4
13	Hudson Water Dept	23.4	Watch	17K	5
14	Peu/Londonderry	22.4	Watch	5K	4
15	Somersworth Water Works	22.2	Watch	12K	5
16	Central Hooksett Water Pct	21.4	Watch	5K	4
17	Jaffrey Water Works	21.2	Watch	4K	5
18	Pembroke Water Works	21.2	Watch	5K	5
19	Lebanon Water Dept	20.8	Watch	10K	3
20	Berlin Water Works	20.8	Watch	10K	3

Detailed records

Registers

#	Market	Score	Band	Population	Signals
1	Exeter Water Dept	37.7	Watch	12K	6
2	Dover Water Dept	35.7	Watch	29K	6
3	Peterborough Water Works	31.2	Watch	5K	5
4	Manchester Water Works	29.0	Watch	124K	6
5	Aquarion Water/Nh	28.3	Watch	34K	5
6	Salem Water Dept	28.3	Watch	21K	5
7	Portsmouth Water Works	28.0	Watch	33K	5
8	Rye Water Dist	27.9	Watch	4K	6
9	Seabrook Water Dept	26.3	Watch	14K	5
10	Milford Water Utilities Dept	25.3	Watch	10K	5
11	Bristol Water Works	25.1	Watch	4K	4
12	Derry Water Dept	23.5	Watch	17K	4
13	Hudson Water Dept	23.4	Watch	17K	5
14	Peu/Londonderry	22.4	Watch	5K	4
15	Somersworth Water Works	22.2	Watch	12K	5
16	Central Hooksett Water Pct	21.4	Watch	5K	4
17	Jaffrey Water Works	21.2	Watch	4K	5
18	Pembroke Water Works	21.2	Watch	5K	5
19	Lebanon Water Dept	20.8	Watch	10K	3
20	Berlin Water Works	20.8	Watch	10K	3

Munimetric tracks infrastructure stress across 42 community drinking-water systems in New Hampshire, covering compliance conditions, capital needs, revenue and rate pressure, and governance risk. Use this page to research which systems face the highest structural stress and how New Hampshire compares nationally.

Which water systems in New Hampshire face the most infrastructure stress?: The highest-stress systems in New Hampshire are ranked by MISI score above. Stress reflects operational burden, capital gaps, revenue fragility, rate affordability constraints, and governance risk—not a single compliance event. In v0.1.2, the headline composite remains a blended structural stress measure rather than a pure physical-condition index. A frozen national reference and a 50 percent single-factor cap reduce the dominance of near-universal and very rare factors, while the component bars continue to separate infrastructure, socioeconomic, and observability readings.
How does New Hampshire compare to other states for drinking water infrastructure risk?: New Hampshire is compared against all 50 states and territories using average MISI score, market count, and band distribution. The state comparison table above shows where New Hampshire ranks nationally and how its average score compares.
Are there lead pipe or corrosion-related concerns in New Hampshire water systems?: Where lead and copper rule compliance data is available from EPA SDWA records, Munimetric factors it into the Operational Stress family. Specific lead service line inventories vary by system. Individual system profiles contain the most detailed compliance context available.
What compliance signals are active in New Hampshire?: Munimetric tracks signals such as compliance escalation, monitoring and reporting failures, data staleness, and financial stress indicators across New Hampshire systems. The signal frequency table above summarizes which signals are most prevalent statewide.
Does Munimetric track boil water advisories in New Hampshire?: Munimetric does not track real-time boil water advisories. For current advisories, contact your local water utility or state drinking water program. Munimetric monitors structural conditions—compliance posture, infrastructure stress, and governance risk—that provide broader context around system reliability.

Keep monitoring this state

Research access covers saved monitoring, alerts, recurring briefs, and team review.

Get the Water Stress Brief Request research access

Water Infrastructure in New Hampshire

Munimetric tracks infrastructure stress across 42 community drinking-water systems in New Hampshire. Each system receives a Munimetric Infrastructure Stress Index (MISI) score from 0 to 100, calculated across five risk families: Operational Stress, Capex Pressure, Revenue Fragility, Rate Constraint, and Governance Risk. Higher scores indicate more structural stress. Scores are source-backed and deterministic, drawing from EPA SDWA compliance records, American Community Survey demographic and economic data, FEMA National Risk Index hazard profiles, and state financial disclosures.

State-level monitoring shows which systems face the highest structural stress, how New Hampshire compares against other states nationally, and which monitoring signals are most active across the state. Each individual system profile includes compliance history, score family drivers, peer rankings within population-based cohorts where safeguards pass, and public source context. Full provenance cards and source workbench views remain workflow-gated. Munimetric covers community water systems across all 50 states and territories. This is structural risk research—not a water quality rating, advisory feed, or credit rating. Updated May 2026.

The statewide public-record layer adds drinking-water violation categories, PFAS monitoring summaries where stored, lead and copper context, source-water mix, and official record links across covered systems. These records help explain water-system context alongside infrastructure stress without turning Munimetric into a tap-water safety determination.

What is the Munimetric score for New Hampshire?: Munimetric assigns a state-level average MISI score based on the individual scores of all covered community water systems in New Hampshire. The state average, band distribution, and market-level rankings are shown on this page. Higher MISI values indicate greater structural stress.
Which water systems in New Hampshire face the most infrastructure stress?: The state page ranks the highest-stress systems in New Hampshire by MISI score. Stress reflects operational burden, capital gaps, revenue fragility, rate affordability constraints, and governance risk, not a single compliance event. The headline remains a blended structural stress composite rather than a pure physical-condition index. Workflow actions remain reserved for account access.
How does New Hampshire compare to other states for drinking water infrastructure risk?: New Hampshire is compared against all 50 states and territories using average MISI score, market count, and band distribution. Munimetric tracks nationwide coverage across 9,000+ scored service markets.
Are there lead pipe or corrosion-related concerns in New Hampshire water systems?: Where lead and copper rule compliance data is available from EPA SDWA records, Munimetric factors it into the Operational Stress family score. Specific lead service line inventories vary by system. Individual system profiles contain the most detailed compliance context available.
Does Munimetric include PFAS monitoring context for New Hampshire water systems?: Munimetric summarizes stored PFAS monitoring context where public contaminant-monitoring records are available. Missing PFAS summaries remain missing records, not non-detections, and this public-record layer does not change the MISI score by itself.
What compliance signals are active in New Hampshire?: Munimetric tracks signals such as compliance escalation, monitoring and reporting failures, population decline, income erosion, data staleness, and parent-government fiscal stress across New Hampshire water systems.
Does Munimetric track boil water advisories in New Hampshire?: Munimetric does not track real-time boil water advisories. For current advisories, contact your local water utility or state drinking water program. Munimetric monitors structural conditions that provide context around system reliability over time.