What is the Munimetric score for Maine?

Munimetric assigns a state-level average MISI score based on the individual scores of all covered community water systems in Maine. 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 Maine face the most infrastructure stress?

The state page ranks the highest-stress systems in Maine 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 Maine compare to other states for drinking water infrastructure risk?

Maine 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 Maine 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 Maine 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 Maine?

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

Does Munimetric track boil water advisories in Maine?

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 Maine have recent recorded drinking-water violations?

Stored public records show 12 covered systems with recent drinking-water violations, with 47 recorded violations across 33 covered systems in the recent 3 years window.

How does Munimetric summarize PFAS public-record context in Maine?

Stored contaminant-monitoring summaries are present for 33 covered systems; 9 systems have PFAS detection context in this state summary.

How does Munimetric summarize lead & copper context in Maine?

Stored lead & copper summaries are present for 33 covered systems; 27 systems have violation or action-level context in this state summary.

What source-water types are represented across covered Maine systems?

Stored identity records group covered Maine systems by source-water type: Surface water: 19, Groundwater: 14.

Where can I find official drinking-water records for Maine?

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

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 / Maine

Maine

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

Statewide Munimetric profile for Maine, covering drinking-water market scores, signal activity, infrastructure stress context, and population insights across 33 scored service markets serving approximately 519,852 people. This state profile highlights what is happening and why it matters using water-system, fiscal, capital, and signal context.

Maine has an average MISI infrastructure stress score of 19.9/100 in the Watch band as of 2026-05-19. Public records summarize recent drinking-water violations, PFAS monitoring records, lead and copper context, and source-water mix across 33 covered systems. This state view keeps municipal infrastructure context separate from current-condition advisories and individual utility determinations. Updated May 2026.

National context

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

33Markets scored

19.9Headline composite

~520KPop. served

129Active signals

Band distribution (MISI)

State headline composite

Component of current headline composite

Infrastructure Stress17.7 / 100

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

Socioeconomic Stress2.2 / 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.

19.9 headline compositeMaine state composite33 markets~520K people served

State interpretation guide

How to read Maine headline composite

Plain-language summary

Maine currently shows an average MISI headline composite of 19.9 versus a national average of 25.0. 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

33 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 Track to monitor changes in high-stress systems over time.

Priority Maine 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

12 of 33Systems with recent public violation rows.

Source-water mix33 systems

Surface water19
Groundwater14
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 33 of 33 included scored systems.
PFAS monitoring summary records are stored for 33 of 33 included systems; missing records are not treated as non-detections.
Lead and copper summary records are stored for 33 of 33 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 Maine have recent recorded drinking-water violations?: Stored public records show 12 covered systems with recent drinking-water violations, with 47 recorded violations across 33 covered systems in the recent 3 years window.
How does Munimetric summarize PFAS public-record context in Maine?: Stored contaminant-monitoring summaries are present for 33 covered systems; 9 systems have PFAS detection context in this state summary.
How does Munimetric summarize lead & copper context in Maine?: Stored lead & copper summaries are present for 33 covered systems; 27 systems have violation or action-level context in this state summary.
What source-water types are represented across covered Maine systems?: Stored identity records group covered Maine systems by source-water type: Surface water: 19, Groundwater: 14.
Where can I find official drinking-water records for Maine?: The Official records drawer lists Public drinking-water profile, Contaminant monitoring records links where currently available for Maine.
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
Ellsworth Water DepartmentME0090520	3,910	Surface water	16	51	recent violations recorded, recent enforcement history, recent monitoring/reporting failures, lead/copper context
Lisbon Water DepartmentME0090870	6,643	Groundwater	8	84	recent violations recorded, recent enforcement history, PFAS detections in stored records
Farmington Village Corp Water DeptME0090540	4,050	Groundwater	4	12	recent violations recorded, recent enforcement history, recent monitoring/reporting failures, lead/copper context
Gardiner Water DistrictME0090610	9,000	Groundwater	3	4	recent violations recorded, recent enforcement history, PFAS detections in stored records, lead/copper context
Kennebunk, Kennebunkport & Wells WdME0090760	35,663	Surface water	2	38	recent violations recorded, recent enforcement history, recent monitoring/reporting failures, lead/copper context
Houlton Water CompanyME0090700	4,735	Groundwater	2	22	recent violations recorded, recent enforcement history, recent monitoring/reporting failures, PFAS detections in stored records
Yarmouth Water DistrictME0091670	8,000	Groundwater	2	16	recent violations recorded, recent enforcement history, recent monitoring/reporting failures, PFAS detections in stored records
Caribou Utilities DistrictME0090320	3,943	Groundwater	2	16	recent violations recorded, recent enforcement history, recent monitoring/reporting failures, 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

33 of the community drinking-water systems in Maine are currently scored. Analytics below are calculated from this covered subset only. Covered systems serve approximately 520K people.

What the Data Suggests

Maine has 33 scored service markets in the Munimetric coverage set, covering roughly 519,852 residents in total. At the latest reading, the state-level average lands at 19.9 out of 100, indicating early but meaningful signs of structural stress in aggregate. No markets currently sit in elevated-stress bands.

Across state markets, Operational Stress (10.1 points average) and Capex Pressure (7.5) are the leading contributors to headline stress. The relatively close spacing suggests pressure is spread across more than one dimension.

129 active signals are recorded across state markets. The most prevalent is Current Drought Severity, affecting 30 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 19.9 as of May 19, 2026. Movement since May 17, 2026 is flat.

Compact summary from 42 stored state observations.

State Family Contribution Summary

Operational Stress10.1 / 20.0

Capex Pressure7.5 / 20.0

Governance Risk1.8 / 20.0

Revenue Fragility0.4 / 20.0

Rate Constraint0.0 / 20.0

Signals

Signal Frequency

Signal	Severity	Markets affected	% of scored
Current Drought Severity	high	30	91%
Climate Hazard Exposure	medium	28	85%
Lead & Copper Rule Risk	high	27	82%
Compliance Escalation	high	18	55%
Parent-Government Fiscal Stress	high	12	36%
PFAS Contamination Risk	high	9	27%
High-AGI Out-Migration	high	3	9%
Infrastructure Capital Gap	low	1	3%
Monitoring / Reporting Failures	medium	1	3%

Markets

Top Markets

#	Market	Score	Band	Population	Signals
1	Kittery Water District	34.2	Watch	14K	5
2	Kennebec Water District	30.9	Watch	22K	6
3	Yarmouth Water District	29.7	Watch	8K	5
4	Bangor Water District	29.1	Watch	27K	5
5	Portland Water Dist / Greater	27.9	Watch	135K	6
6	Gardiner Water District	27.3	Watch	9K	5
7	Caribou Utilities District	25.1	Watch	4K	5
8	Greater Augusta Utility District	25.0	Watch	14K	5
9	Orono-Veazie Water District	24.5	Watch	6K	4
10	Ellsworth Water Department	23.5	Watch	4K	4
11	Sanford Water District	23.3	Watch	14K	4
12	Kennebunk, Kennebunkport & Wells Wd	23.3	Watch	36K	4
13	Hampden Water District	23.3	Watch	5K	4
14	Lisbon Water Department	22.4	Watch	7K	5
15	Lewiston Water & Sewer Division	21.9	Watch	24K	4
16	Maine Water Company Millinocket Division	21.5	Watch	5K	4
17	Maine Water Company Biddeford Saco Div	21.3	Watch	43K	4
18	Presque Isle Water District	21.0	Watch	6K	4
19	Rumford Water District	20.5	Watch	4K	4
20	Houlton Water Company	18.3	Stable	5K	4

Comparison

State Comparison

National average: 25.0

Rank	State	Avg Score	Band	Markets	Delta vs State
47	North Dakota	19.9	Watch	29	+0.1
48	Virginia	19.9	Stable	162	+0.0
49	Maine	19.9	Watch	33	+0.0
50	Montana	19.2	Stable	38	-0.7
51	Michigan	18.8	Stable	304	-1.1

Analytical posture

State Stress Analytics

Score Distribution

Distribution of scored market scores with the state average overlay.

33 markets plotted.

Stress vs Population

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

33 markets plotted.

Population View

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

~520K people served by 33 systems in Maine

Stable

Watch

Fragile

High Stress

Critical

33 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

19.9

Trend

+19.9

Observations

Extended layers

Advanced State Context

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

Markets & signals

Priority Views

#	Service Market	Score	Band	Pop.	Signals
1	Kittery Water District	34.2	Watch	14K	5
2	Kennebec Water District	30.9	Watch	22K	6
3	Yarmouth Water District	29.7	Watch	8K	5
4	Bangor Water District	29.1	Watch	27K	5
5	Portland Water Dist / Greater	27.9	Watch	135K	6
6	Gardiner Water District	27.3	Watch	9K	5
7	Caribou Utilities District	25.1	Watch	4K	5
8	Greater Augusta Utility District	25.0	Watch	14K	5
9	Orono-Veazie Water District	24.5	Watch	6K	4
10	Ellsworth Water Department	23.5	Watch	4K	4
11	Sanford Water District	23.3	Watch	14K	4
12	Kennebunk, Kennebunkport & Wells Wd	23.3	Watch	36K	4
13	Hampden Water District	23.3	Watch	5K	4
14	Lisbon Water Department	22.4	Watch	7K	5
15	Lewiston Water & Sewer Division	21.9	Watch	24K	4
16	Maine Water Company Millinocket Division	21.5	Watch	5K	4
17	Maine Water Company Biddeford Saco Div	21.3	Watch	43K	4
18	Presque Isle Water District	21.0	Watch	6K	4
19	Rumford Water District	20.5	Watch	4K	4
20	Houlton Water Company	18.3	Stable	5K	4

Detailed records

Registers

#	Market	Score	Band	Population	Signals
1	Kittery Water District	34.2	Watch	14K	5
2	Kennebec Water District	30.9	Watch	22K	6
3	Yarmouth Water District	29.7	Watch	8K	5
4	Bangor Water District	29.1	Watch	27K	5
5	Portland Water Dist / Greater	27.9	Watch	135K	6
6	Gardiner Water District	27.3	Watch	9K	5
7	Caribou Utilities District	25.1	Watch	4K	5
8	Greater Augusta Utility District	25.0	Watch	14K	5
9	Orono-Veazie Water District	24.5	Watch	6K	4
10	Ellsworth Water Department	23.5	Watch	4K	4
11	Sanford Water District	23.3	Watch	14K	4
12	Kennebunk, Kennebunkport & Wells Wd	23.3	Watch	36K	4
13	Hampden Water District	23.3	Watch	5K	4
14	Lisbon Water Department	22.4	Watch	7K	5
15	Lewiston Water & Sewer Division	21.9	Watch	24K	4
16	Maine Water Company Millinocket Division	21.5	Watch	5K	4
17	Maine Water Company Biddeford Saco Div	21.3	Watch	43K	4
18	Presque Isle Water District	21.0	Watch	6K	4
19	Rumford Water District	20.5	Watch	4K	4
20	Houlton Water Company	18.3	Stable	5K	4

Munimetric tracks infrastructure stress across 33 community drinking-water systems in Maine, 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 Maine compares nationally.

Which water systems in Maine face the most infrastructure stress?: The highest-stress systems in Maine 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 Maine compare to other states for drinking water infrastructure risk?: Maine is compared against all 50 states and territories using average MISI score, market count, and band distribution. The state comparison table above shows where Maine ranks nationally and how its average score compares.
Are there lead pipe or corrosion-related concerns in Maine 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 Maine?: Munimetric tracks signals such as compliance escalation, monitoring and reporting failures, data staleness, and financial stress indicators across Maine systems. The signal frequency table above summarizes which signals are most prevalent statewide.
Does Munimetric track boil water advisories in Maine?: 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

Workflow access covers exports, Track, Munex, alerts, and repeat monitoring tools.

Get the Water Stress Brief Request workflow access

Water Infrastructure in Maine

Munimetric tracks infrastructure stress across 33 community drinking-water systems in Maine. 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 Maine 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 Maine?: Munimetric assigns a state-level average MISI score based on the individual scores of all covered community water systems in Maine. 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 Maine face the most infrastructure stress?: The state page ranks the highest-stress systems in Maine 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 Maine compare to other states for drinking water infrastructure risk?: Maine 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 Maine 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 Maine 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 Maine?: Munimetric tracks signals such as compliance escalation, monitoring and reporting failures, population decline, income erosion, data staleness, and parent-government fiscal stress across Maine water systems.
Does Munimetric track boil water advisories in Maine?: 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.

Maine

Maine Infrastructure Track

Funding mix

Big projects

How to read Maine headline composite

Plain-language summary

Why this page stands out

What to do next

Priority Maine paths

Statewide Water Quality Context

What This Page Shows

What the Data Suggests

Recent Movement

State Family Contribution Summary

Signal Frequency

Top Markets

State Comparison

State Stress Analytics

Score Distribution

Stress vs Population

Population View

Peer Constellation

Score Trend

Advanced State Context

Priority Views

Registers

Keep monitoring this state

Water Infrastructure in Maine

Maine

Funding mix

Big projects

How to read Maine headline composite

Plain-language summary

Why this page stands out

What to do next

Priority Maine paths

Statewide Water Quality Context

What This Page Shows

What the Data Suggests

Recent Movement

State Family Contribution Summary

Signal Frequency

Top Markets

State Comparison

State Stress Analytics

Score Trend

Advanced State Context

Priority Views

Registers

Keep monitoring this state

Water Infrastructure in Maine

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