What is the Munimetric score for Connecticut?

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

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

Connecticut 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 Connecticut 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 Connecticut 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 Connecticut?

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

Does Munimetric track boil water advisories in Connecticut?

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 Connecticut have recent recorded drinking-water violations?

Stored public records show 30 covered systems with recent drinking-water violations, with 301 recorded violations across 57 covered systems in the recent 3 years window.

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

Stored contaminant-monitoring summaries are present for 55 covered systems; 39 systems have PFAS detection context in this state summary.

How does Munimetric summarize lead & copper context in Connecticut?

Stored lead & copper summaries are present for 57 covered systems; 24 systems have violation or action-level context in this state summary.

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

Stored identity records group covered Connecticut systems by source-water type: Surface water: 45, Groundwater: 12.

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

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

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 / Connecticut

Connecticut

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

Statewide Munimetric profile for Connecticut, covering drinking-water market scores, signal activity, infrastructure stress context, and population insights across 57 scored service markets serving approximately 2.6 million people. This state profile highlights what is happening and why it matters using water-system, fiscal, capital, and signal context.

Connecticut has an average MISI infrastructure stress score of 33.6/100 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 57 covered systems. Updated May 2026.

National context

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

57Markets scored

33.6Headline composite

~2.6MPop. served

235Active signals

Band distribution (MISI)

State headline composite

Component of current headline composite

Infrastructure Stress15.6 / 100

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

Socioeconomic Stress15.7 / 100

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

Observability Stress2.3 / 100

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

33.6 headline compositeConnecticut state composite57 markets~2.6M people served

State interpretation guide

How to read Connecticut headline composite

Plain-language summary

Connecticut currently shows an average MISI headline composite of 33.6 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

57 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 Connecticut 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

30 of 57Systems with recent public violation rows.

Source-water mix57 systems

Surface water45
Groundwater12
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 57 of 57 included scored systems.
PFAS monitoring summary records are stored for 55 of 57 included systems; missing records are not treated as non-detections.
Lead and copper summary records are stored for 57 of 57 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 Connecticut have recent recorded drinking-water violations?: Stored public records show 30 covered systems with recent drinking-water violations, with 301 recorded violations across 57 covered systems in the recent 3 years window.
How does Munimetric summarize PFAS public-record context in Connecticut?: Stored contaminant-monitoring summaries are present for 55 covered systems; 39 systems have PFAS detection context in this state summary.
How does Munimetric summarize lead & copper context in Connecticut?: Stored lead & copper summaries are present for 57 covered systems; 24 systems have violation or action-level context in this state summary.
What source-water types are represented across covered Connecticut systems?: Stored identity records group covered Connecticut systems by source-water type: Surface water: 45, Groundwater: 12.
Where can I find official drinking-water records for Connecticut?: The Official records drawer lists Public drinking-water profile, Contaminant monitoring records links where currently available for Connecticut.
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
Berlin Water Control CommissionCT0070021	5,128	Surface water	46	37	recent violations recorded, recent enforcement history, recent monitoring/reporting failures, PFAS detections in stored records, lead/copper context
Aquarion-New Milford RegionalCT0960011	13,331	Groundwater	46	4	recent violations recorded, recent enforcement history, recent monitoring/reporting failures, PFAS detections in stored records, lead/copper context
Wallingford Water DepartmentCT1480011	37,267	Surface water	44	14	recent violations recorded, recent enforcement history, recent monitoring/reporting failures, PFAS detections in stored records
Colchester Sewer & Water CommissionCT0280011	4,020	Groundwater	20	43	recent violations recorded, recent enforcement history, recent monitoring/reporting failures, PFAS detections in stored records
Putnam Water Pollution Control AuthorityCT1160011	7,300	Surface water	20	0	recent violations recorded, recent monitoring/reporting failures, PFAS detections in stored records, lead/copper context
Southington Water DepartmentCT1310011	43,069	Surface water	18	56	recent violations recorded, recent enforcement history, recent monitoring/reporting failures, PFAS detections in stored records, lead/copper context
Kensington Fire DistrictCT0070011	7,553	Surface water	12	21	recent violations recorded, recent enforcement history, recent monitoring/reporting failures
Watertown Water & Sewer AuthorityCT1530021	9,972	Surface water	10	18	recent violations recorded, recent enforcement history, recent monitoring/reporting failures

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

57 of the community drinking-water systems in Connecticut are currently scored. Analytics below are calculated from this covered subset only. Covered systems serve approximately 2.6M people.

What the Data Suggests

Connecticut has 57 scored service markets in the Munimetric coverage set, covering roughly 2.6 million residents in total. At the latest reading, the state-level average lands at 33.6 out of 100, indicating early but meaningful signs of structural stress in aggregate. About 25% of scored markets sit in elevated-stress bands, a notable but not extreme share.

Across state markets, Rate Constraint stands out as the dominant contributor to headline stress (14.5 points average), with Capex Pressure a distant second at 9.8. That pattern suggests a particular kind of pressure — concentrated rather than broadly distributed.

235 active signals are recorded across state markets. The most prevalent is Income Erosion, affecting 57 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 33.6 as of May 19, 2026. Movement since May 17, 2026 is flat.

Compact summary from 42 stored state observations.

State Family Contribution Summary

Rate Constraint14.5 / 20.0

Capex Pressure9.8 / 20.0

Operational Stress5.7 / 20.0

Governance Risk3.5 / 20.0

Revenue Fragility0.0 / 20.0

Signals

Signal Frequency

Signal	Severity	Markets affected	% of scored
Income Erosion	high	57	100%
Compliance Escalation	high	41	72%
PFAS Contamination Risk	high	39	68%
Lead & Copper Rule Risk	high	24	42%
Utility Data Staleness	high	24	42%
Infrastructure Capital Gap	high	23	40%
Parent-Government Fiscal Stress	high	15	26%
Monitoring / Reporting Failures	medium	11	19%
Rapid Score Deterioration	medium	1	2%

Markets

Top Markets

#	Market	Score	Band	Population	Signals
1	Colchester Sewer & Water Commission	52.8	Fragile	4K	6
2	Aquarion Water Co of Ct-New Milford	51.5	Fragile	13K	7
3	Southington Water Department	49.7	Fragile	43K	6
4	Manchester Water Department	48.8	Fragile	51K	5
5	Ctwc - Unionville System	45.9	Fragile	15K	6
6	New Britain Water Department	45.5	Fragile	74K	5
7	Winsted Water Works	45.2	Fragile	8K	5
8	Bristol Water Department	44.0	Fragile	52K	5
9	Danbury Water Department	42.6	Fragile	62K	6
10	Aquarion Water Co of Ct-Main System	42.4	Fragile	352K	5
11	Avon Water Co	42.0	Fragile	12K	5
12	Ctwc - Crystal Water Company	42.0	Fragile	6K	5
13	Meriden Water Division	41.0	Fragile	58K	5
14	Jewett City Water Company	40.9	Fragile	7K	5
15	Aquarion Water Co of Ct-New Canaan Sys	39.9	Watch	10K	5
16	Aquarion Water Co of Ct-Ridgefield Sys	39.9	Watch	7K	5
17	Regional Water Authority	39.4	Watch	419K	5
18	Bethel Water Dept	39.2	Watch	10K	5
19	Aquarion Water Co of Ct-Greenwich System	38.8	Watch	53K	5
20	Cromwell Fire District Water Department	38.0	Watch	14K	4

Comparison

State Comparison

National average: 25.0

Rank	State	Avg Score	Band	Markets	Delta vs State
1	Massachusetts	37.9	Watch	255	+4.3
2	Connecticut	33.6	Watch	57	+0.0
3	Oklahoma	32.6	Watch	148	-1.0
4	Louisiana	32.5	Watch	239	-1.1

Analytical posture

State Stress Analytics

Score Distribution

Distribution of scored market scores with the state average overlay.

57 markets plotted.

Stress vs Population

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

57 markets plotted.

Population View

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

~2.6M people served by 57 systems in Connecticut

Stable

Watch

Fragile

High Stress

Critical

57 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

33.6

Trend

+8.9

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	Colchester Sewer & Water Commission	52.8	Fragile	4K	6
2	Aquarion Water Co of Ct-New Milford	51.5	Fragile	13K	7
3	Southington Water Department	49.7	Fragile	43K	6
4	Manchester Water Department	48.8	Fragile	51K	5
5	Ctwc - Unionville System	45.9	Fragile	15K	6
6	New Britain Water Department	45.5	Fragile	74K	5
7	Winsted Water Works	45.2	Fragile	8K	5
8	Bristol Water Department	44.0	Fragile	52K	5
9	Danbury Water Department	42.6	Fragile	62K	6
10	Aquarion Water Co of Ct-Main System	42.4	Fragile	352K	5
11	Avon Water Co	42.0	Fragile	12K	5
12	Ctwc - Crystal Water Company	42.0	Fragile	6K	5
13	Meriden Water Division	41.0	Fragile	58K	5
14	Jewett City Water Company	40.9	Fragile	7K	5
15	Aquarion Water Co of Ct-New Canaan Sys	39.9	Watch	10K	5
16	Aquarion Water Co of Ct-Ridgefield Sys	39.9	Watch	7K	5
17	Regional Water Authority	39.4	Watch	419K	5
18	Bethel Water Dept	39.2	Watch	10K	5
19	Aquarion Water Co of Ct-Greenwich System	38.8	Watch	53K	5
20	Cromwell Fire District Water Department	38.0	Watch	14K	4

Detailed records

Registers

#	Market	Score	Band	Population	Signals
1	Colchester Sewer & Water Commission	52.8	Fragile	4K	6
2	Aquarion Water Co of Ct-New Milford	51.5	Fragile	13K	7
3	Southington Water Department	49.7	Fragile	43K	6
4	Manchester Water Department	48.8	Fragile	51K	5
5	Ctwc - Unionville System	45.9	Fragile	15K	6
6	New Britain Water Department	45.5	Fragile	74K	5
7	Winsted Water Works	45.2	Fragile	8K	5
8	Bristol Water Department	44.0	Fragile	52K	5
9	Danbury Water Department	42.6	Fragile	62K	6
10	Aquarion Water Co of Ct-Main System	42.4	Fragile	352K	5
11	Avon Water Co	42.0	Fragile	12K	5
12	Ctwc - Crystal Water Company	42.0	Fragile	6K	5
13	Meriden Water Division	41.0	Fragile	58K	5
14	Jewett City Water Company	40.9	Fragile	7K	5
15	Aquarion Water Co of Ct-New Canaan Sys	39.9	Watch	10K	5
16	Aquarion Water Co of Ct-Ridgefield Sys	39.9	Watch	7K	5
17	Regional Water Authority	39.4	Watch	419K	5
18	Bethel Water Dept	39.2	Watch	10K	5
19	Aquarion Water Co of Ct-Greenwich System	38.8	Watch	53K	5
20	Cromwell Fire District Water Department	38.0	Watch	14K	4

Munimetric tracks infrastructure stress across 57 community drinking-water systems in Connecticut, 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 Connecticut compares nationally.

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

Munimetric tracks infrastructure stress across 57 community drinking-water systems in Connecticut. 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 Connecticut 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 Connecticut?: Munimetric assigns a state-level average MISI score based on the individual scores of all covered community water systems in Connecticut. 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 Connecticut face the most infrastructure stress?: The state page ranks the highest-stress systems in Connecticut 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 Connecticut compare to other states for drinking water infrastructure risk?: Connecticut 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 Connecticut 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 Connecticut 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 Connecticut?: Munimetric tracks signals such as compliance escalation, monitoring and reporting failures, population decline, income erosion, data staleness, and parent-government fiscal stress across Connecticut water systems.
Does Munimetric track boil water advisories in Connecticut?: 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.

Connecticut

Connecticut Infrastructure Track

Funding mix

Big projects

How to read Connecticut headline composite

Plain-language summary

Why this page stands out

What to do next

Priority Connecticut 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 Connecticut

Connecticut

Funding mix

Big projects

How to read Connecticut headline composite

Plain-language summary

Why this page stands out

What to do next

Priority Connecticut 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 Connecticut

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