Munimetric Water System Profile

Aquarion Water Co of Ct-Main System, CT

Drinking Water Infrastructure Profile

Aquarion Water Co of Ct-Main System, CT, Connecticut — Munimetric water system profile with MISI stress score, active compliance signals, infrastructure context, and fiscal pressure indicators. This profile highlights what is happening and why it matters using water-system, fiscal, capital, and signal context.

Aquarion Water Co of Ct-Main System, CT has a MISI infrastructure stress score of 42.4/100 in the Fragile band as of 2026-05-19. Public records show surface-water sourcing, PFAS monitoring context, lead and copper compliance context and approximately 351,756 residents served. Updated May 2026.

FragileScore date May 19, 2026Methodology v0.1.2

State context

Current market shown in covered state context. Tile size reflects population served; color reflects stress band.

42.4Headline composite
FragileBand
80%Confidence
~352KPop. served
P83Peer percentile
7Active signals

Current headline composite

Component of current headline composite

Infrastructure Stress25.9 / 100

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

Socioeconomic Stress16.5 / 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.

42.4/100 headline compositeFragile80% confidencedrinking_water::community_water_system::250k_plus::surface_water~352K people served

Monitoring context stored

Water Quality & Supply Context

Public-record context for this system. Stored monitoring and compliance records only. Does not change MISI.

Public records
Records presentCTPWSID CT0150011.
Recent violations
5 records5 MRInorganic Chemicals
Enforcement records
5 recordsStored public enforcement rows.
PFAS monitoring records
14 detections0.01Stored PFAS monitoring records list 420 samples and 14 detections.
Lead/copper monitoring records
2 records95 samplesStored lead/copper records list 2 open LCR violations and 0 action-level records.
Source / supply context
Surface waterIdentity351,756 served; Dec 31, 2025.

Executive context

What the Data Suggests

Aquarion Water Co of Ct-Main System, CT's public water system serves roughly 351,756 residents, placing it among the larger community systems in this coverage set. The current reading places the system in a zone of moderate-to-elevated stress that goes beyond normal operating variation.

The score is being driven mainly by Capex Pressure, which is at the top of its range in the model, with Rate Constraint adding another heavy layer of pressure. That combination suggests strain is showing up across core system functions, not just one isolated dimension.

5 active stress signals are attached to this system, including 2 at high severity. That signal mix points to a system where several warning indicators are firing at once, not just one extreme outlier.

Within Community · 250k+ · Surface, this system ranks around the 83rd percentile on measured stress, placing it among the more stressed systems in its peer group.

Recent observations suggest the system has been relatively steady rather than sharply improving or deteriorating — the current picture looks more like persistent underlying pressure 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.

Analytical posture

Market Stress Analytics

Family Contribution

MISI family contributions for this market.

Capex PressureCapex Pressure: 20.0 / 20.020.0Rate ConstraintRate Constraint: 16.5 / 20.016.5Operational StressOperational Stress: 5.9 / 20.05.9Revenue FragilityRevenue Fragility: 0.0 / 20.00.0Governance RiskGovernance Risk: 0.0 / 20.00.0

Peer Position

Where Aquarion Water Co of Ct-Main System sits within its peer cohort.

0%25%50%75%100%42.4drinking_water::community_water_system::250k_plus::surface_water · 157 systems · 83th percentileLess stressMore stress
Income ErosionIncome Erosion: 15.6% weight — Available 15.6%Compliance EscalationCompliance Escalation: 9.4% weight — Available 9.4%Infrastructure Capit…Infrastructure Capital Gap: 9.4% weight — Available 9.4%Population Served De…Population Served Decline: 7.8% weight — Population-served trend is unavailable because the latest support metric snapshot is missing or incomplete. 7.8%Housing Market Weakn…Housing Market Weakness: 7.8% weight — Available 7.8%Parent-Government Fi…Parent-Government Fiscal Stress: 7.8% weight — No parent-government fiscal overlay is available for this service market. 7.8%Monitoring / Reporti…Monitoring / Reporting Failures: 6.3% weight — Available 6.3%Climate Hazard Expos…Climate Hazard Exposure: 6.3% weight — No FEMA climate-hazard risk score is available for this market. 6.3%Lead & Copper Rule R…Lead & Copper Rule Risk: 6.3% weight — Available 6.3%PFAS Contamination R…PFAS Contamination Risk: 6.3% weight — Available 6.3%SRF Dependence SpikeSRF Dependence Spike: 6.3% weight — Available 6.3%Utility Data StalenessUtility Data Staleness: 4.7% weight — Available 4.7%Formal Enforcement O…Formal Enforcement Obligations: 3.1% weight — Available 3.1%Rapid Score Deterior…Rapid Score Deterioration: 3.1% weight — Available 3.1%
AvailableMissing

Score History

Latest

42.4

Trend

+22.4

Observations

45

Mar 18, 2026 · 20.0Mar 20, 2026 · 20.0Mar 21, 2026 · 20.0Mar 22, 2026 · 20.0Mar 24, 2026 · 26.0Mar 25, 2026 · 34.0Mar 29, 2026 · 34.0Apr 2, 2026 · 34.0Apr 3, 2026 · 34.0Apr 3, 2026 · 34.0Apr 4, 2026 · 34.0Apr 5, 2026 · 34.0Apr 5, 2026 · 34.0Apr 6, 2026 · 46.0Apr 7, 2026 · 46.0Apr 8, 2026 · 46.0Apr 9, 2026 · 46.0Apr 10, 2026 · 46.0Apr 13, 2026 · 46.0Apr 14, 2026 · 46.0Apr 18, 2026 · 46.0Apr 19, 2026 · 46.0Apr 21, 2026 · 46.0Apr 22, 2026 · 46.0Apr 23, 2026 · 46.0Apr 24, 2026 · 46.0Apr 25, 2026 · 46.0Apr 26, 2026 · 42.4Apr 26, 2026 · 46.0Apr 27, 2026 · 42.4Apr 28, 2026 · 42.4Apr 29, 2026 · 42.4Apr 30, 2026 · 42.4May 1, 2026 · 42.4May 2, 2026 · 42.4May 3, 2026 · 42.4May 4, 2026 · 42.4May 5, 2026 · 42.4May 6, 2026 · 42.4May 7, 2026 · 42.4May 8, 2026 · 42.4May 9, 2026 · 42.4May 10, 2026 · 42.4May 17, 2026 · 42.4May 19, 2026 · 42.4Mar 18, 2026May 19, 2026

Structural Indicators

Operational Stress5.9 / 20.0

Operational Stress totals 5.929 points, led by compliance escalation.

Capex Pressure20.0 / 20.0

Capex Pressure totals 20.000 points, led by lead & copper rule risk.

Revenue Fragility0.0 / 20.0

Revenue Fragility totals 0.000 points with no triggered factors.

Rate Constraint16.5 / 20.0

Rate Constraint totals 16.498 points, led by income erosion.

Governance Risk0.0 / 20.0

Governance Risk totals 0.000 points with no triggered factors.

Stress movement

Diagnostics

Diagnostics & Movement

Compact status for confidence, data coverage, disclosure freshness, and stored score movement. Detailed diagnostic history remains available below.

Confidence

80%

Confidence is mainly capped by missing factor coverage.

Factor coverage

Complete

All tracked confidence factors are currently available.

Disclosure freshness

Not available

No attached disclosure document has a usable reference date. Some profile sections are selectively summarized because confidence is currently medium.

Latest movement

flat 0.0

Compared with May 17, 2026.

Last material movement

-3.6

Recorded Apr 26, 2026.

History

45 observations stored

Latest stored observation May 19, 2026.

Show detailed diagnostic history

Expanded stress diagnostics

Open detailed contribution diagnostics

No detailed factor diagnostics are stored for this profile snapshot.

Confidence summary

Confidence is mainly capped by missing factor coverage.

Missing factor coverage

No factor gaps are recorded on the latest stored score.

Disclosure freshness diagnostics

0 attached local documents · 0 structured facts

No attached disclosure document has a usable reference date. Some profile sections are selectively summarized because confidence is currently medium.

Latest reference Not available · stale after Not available

Score movement

flat 0.0

Previous run May 17, 2026

May 19, 2026

Score 42.4 in band fragile. Confidence 80%.

Delta vs prior run 0.0

May 17, 2026

Score 42.4 in band fragile. Confidence 80%.

Delta vs prior run 0.0

May 10, 2026

Score 42.4 in band fragile. Confidence 80%.

Delta vs prior run 0.0

May 9, 2026

Score 42.4 in band fragile. Confidence 80%.

Delta vs prior run 0.0

May 8, 2026

Score 42.4 in band fragile. Confidence 80%.

Delta vs prior run 0.0

May 7, 2026

Score 42.4 in band fragile. Confidence 80%.

Delta vs prior run 0.0

May 6, 2026

Score 42.4 in band fragile. Confidence 80%.

Delta vs prior run 0.0

May 5, 2026

Score 42.4 in band fragile. Confidence 80%.

Delta vs prior run 0.0

May 4, 2026

Score 42.4 in band fragile. Confidence 80%.

Delta vs prior run 0.0

May 3, 2026

Score 42.4 in band fragile. Confidence 80%.

Delta vs prior run 0.0

May 2, 2026

Score 42.4 in band fragile. Confidence 80%.

Delta vs prior run 0.0

May 1, 2026

Score 42.4 in band fragile. Confidence 80%.

Delta vs prior run 0.0

Apr 30, 2026

Score 42.4 in band fragile. Confidence 80%.

Delta vs prior run 0.0

Apr 29, 2026

Score 42.4 in band fragile. Confidence 80%.

Delta vs prior run 0.0

Apr 28, 2026

Score 42.4 in band fragile. Confidence 80%.

Delta vs prior run 0.0

Apr 27, 2026

Score 42.4 in band fragile. Confidence 80%.

Delta vs prior run 0.0

Apr 26, 2026

Score 42.4 in band fragile. Confidence 80%.

Delta vs prior run -3.6

Apr 26, 2026

Score 46.0 in band fragile. Confidence 80%.

Delta vs prior run 0.0

Apr 25, 2026

Score 46.0 in band fragile. Confidence 80%.

Delta vs prior run 0.0

Apr 24, 2026

Score 46.0 in band fragile. Confidence 80%.

Delta vs prior run 0.0

Apr 23, 2026

Score 46.0 in band fragile. Confidence 80%.

Delta vs prior run 0.0

Apr 22, 2026

Score 46.0 in band fragile. Confidence 80%.

Delta vs prior run 0.0

Apr 21, 2026

Score 46.0 in band fragile. Confidence 80%.

Delta vs prior run 0.0

Apr 19, 2026

Score 46.0 in band fragile. Confidence 80%.

Delta vs prior run 0.0

Apr 18, 2026

Score 46.0 in band fragile. Confidence 80%.

Delta vs prior run 0.0

Apr 14, 2026

Score 46.0 in band fragile. Confidence 80%.

Delta vs prior run 0.0

Apr 13, 2026

Score 46.0 in band fragile. Confidence 80%.

Delta vs prior run 0.0

Apr 10, 2026

Score 46.0 in band fragile. Confidence 80%.

Delta vs prior run 0.0

Apr 9, 2026

Score 46.0 in band fragile. Confidence 80%.

Delta vs prior run 0.0

Apr 8, 2026

Score 46.0 in band fragile. Confidence 80%.

Delta vs prior run 0.0

Apr 7, 2026

Score 46.0 in band fragile. Confidence 80%.

Delta vs prior run 0.0

Apr 6, 2026

Score 46.0 in band fragile. Confidence 80%.

Delta vs prior run 12.0

Apr 5, 2026

Score 34.0 in band watch. Confidence 71%.

Delta vs prior run 0.0

Apr 5, 2026

Score 34.0 in band watch. Confidence 81%.

Delta vs prior run 0.0

Apr 4, 2026

Score 34.0 in band watch. Confidence 81%.

Delta vs prior run 0.0

Apr 3, 2026

Score 34.0 in band watch. Confidence 81%.

Delta vs prior run 0.0

Apr 3, 2026

Score 34.0 in band watch. Confidence 81%.

Delta vs prior run 0.0

Apr 2, 2026

Score 34.0 in band watch. Confidence 81%.

Delta vs prior run 0.0

Mar 29, 2026

Score 34.0 in band watch. Confidence 77%.

Delta vs prior run 0.0

Mar 25, 2026

Score 34.0 in band watch. Confidence 77%.

Delta vs prior run 8.0

Mar 24, 2026

Score 26.0 in band watch. Confidence 63%.

Delta vs prior run 6.0

Mar 22, 2026

Score 20.0 in band stable. Confidence 63%.

Delta vs prior run 0.0

Mar 21, 2026

Score 20.0 in band stable. Confidence 63%.

Delta vs prior run 0.0

Mar 20, 2026

Score 20.0 in band stable. Confidence 63%.

Delta vs prior run 0.0

Mar 18, 2026

Score 20.0 in band stable. Confidence 63%.

Signals

Signal Timeline

MaterialactiveNot availableRank #1

Signal
pfas contamination risk
Score impact
Not available
Resolved
Active
SignificantactiveNot availableRank #2

Signal
lead copper rule risk
Score impact
Not available
Resolved
Active
MaterialresolvedNot availableRank #3

Signal
pfas contamination risk
Score impact
Not available
Resolved
Apr 7, 2026
SignificantresolvedNot availableRank #4

Signal
lead copper rule risk
Score impact
Not available
Resolved
Apr 7, 2026
MaterialactiveNot availableRank #5

Signal
Infrastructure Capital Gap
Score impact
Not available
Resolved
Active
MaterialactiveNot availableRank #6

Signal
Compliance Escalation
Score impact
Not available
Resolved
Active
SignificantactiveNot availableRank #7

Signal
Income Erosion
Score impact
Not available
Resolved
Active

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About Aquarion Water Co of Ct-Main System, CT

Aquarion Water Co of Ct-Main System, CT is a community drinking-water system in Connecticut that Munimetric monitors for infrastructure stress. The current MISI score of 42.4 out of 100 places this system in the fragile stress band as of 2026-05-19. The MISI composite reflects five structural risk families: Operational Stress, Capex Pressure, Revenue Fragility, Rate Constraint, and Governance Risk. Higher scores indicate more structural stress.

Data is assembled from EPA SDWA compliance records, American Community Survey demographic and economic indicators, FEMA National Risk Index hazard exposure data, state-reported financial disclosures, and stored public-record water quality context where available. This system serves approximately 351,756 people. The system has 5 recorded compliance violations in the SDWA record. Munimetric does not fabricate data where public records are unavailable. This profile is for structural monitoring and research—not a current-condition determination or credit rating. Updated May 2026.

What is the Munimetric score for Aquarion Water Co of Ct-Main System, CT?
The current Munimetric Infrastructure Stress Index (MISI) score for Aquarion Water Co of Ct-Main System, CT is 42.4 out of 100, placing this system in the fragile stress band. MISI is a composite of five structural risk families. Higher values indicate more stress. The score is deterministic, source-backed, and updated as new data becomes available.
Does Aquarion Water Co of Ct-Main System, CT show signs of drinking-water infrastructure stress?
Munimetric monitors structural stress indicators for Aquarion Water Co of Ct-Main System, CT across operational conditions, capital needs, revenue stability, rate affordability, and governance quality. The current MISI score and active signals shown in this profile reflect the latest available evidence from EPA, ACS, FEMA NRI, and state financial disclosures.
Does Munimetric rate current tap-water conditions for Aquarion Water Co of Ct-Main System, CT?
No. Munimetric is not a water testing service and does not make current-condition determinations. This profile tracks structural conditions: compliance posture, financial pressure, infrastructure stress, and governance quality. For current water quality testing results, consult the system's Consumer Confidence Report or contact the local water utility.
Has Aquarion Water Co of Ct-Main System, CT had a boil water advisory?
Munimetric does not track real-time boil water advisories. For current advisory status, contact your local water utility or state drinking water program. This profile tracks structural risk indicators and compliance history that provide long-term context around system reliability.
Are lead pipes or corrosion risk a concern in Aquarion Water Co of Ct-Main System, CT?
Where EPA SDWA compliance data includes lead and copper rule monitoring, violations, or enforcement actions, that information feeds into the Operational Stress component of the MISI score. Munimetric does not fabricate lead pipe data where public records are silent.
Does Munimetric include PFAS monitoring context for Aquarion Water Co of Ct-Main System, CT?
Where stored public records include UCMR or contaminant-monitoring summaries, Munimetric displays PFAS monitoring context as public-record evidence. Missing PFAS summaries are treated as missing records, not as non-detections. This context does not change MISI by itself.
What source-water context is available for Aquarion Water Co of Ct-Main System, CT?
Munimetric displays stored source-water and supply context where public drinking-water identity records are available. Source-water context helps explain treatment and supply exposure, but missing source records remain explicit rather than inferred.
Why might water rates be increasing in Aquarion Water Co of Ct-Main System, CT?
Rate pressure can reflect capital investment needs, a declining customer base, revenue fragility, affordability constraints, or parent-government fiscal stress. The Rate Constraint and Revenue Fragility score families specifically measure these pressures where data is available from public financial disclosures.
What does the MISI score mean for Aquarion Water Co of Ct-Main System, CT?
The MISI score (42.4/100) is a composite measure of structural risk across five families: Operational Stress, Capex Pressure, Revenue Fragility, Rate Constraint, and Governance Risk. The headline remains a blended structural stress composite rather than a pure physical-condition index. The current methodology also downweights factors that are nearly universal or very rare in the frozen national reference population, so one common contextual factor does not dominate the headline by itself. Higher scores indicate more structural stress. It is deterministic and source-backed, not a credit rating.