Limited pressure
The family is not currently driving the headline score.Methodology
Munimetric Stress Score
Munimetric Stress Score v0.1.1 is the current live methodology. It is deterministic, source-backed, and versioned so methodology updates do not overwrite historical scores.
Munimetric Stress Score is a source-backed, deterministic monitoring framework for structural stress in community drinking-water systems. Scores run from 0 to 100, with higher values indicating more pressure, and are organized across five fixed dimensions: Operational Stress, Capex Pressure, Revenue Fragility, Rate Constraint, and Governance Risk. Peer context and confidence are shown separately to help users interpret results without making the score itself unstable. Methodology updates are versioned over time, while detailed trigger logic and calibration remain part of the protected research framework.
Score families
Core dimensions
The methodology evaluates structural stress across five fixed dimensions of system performance and conditions.
Operational StressCompliance burden, system reliability, and operating conditions.
Capex PressureInfrastructure capital needs relative to current spending and support.
Revenue FragilityCustomer-base trends, economic softness, and demand-side risk.
Rate ConstraintAffordability limits, income capacity, and rate-setting headroom.
Governance RiskParent-government fiscal stress and disclosure freshness.
Family contributions
Score construction
The headline score reflects the combined contribution of multiple underlying dimensions. Each dimension contributes to the overall score based on observed system conditions, with higher values indicating greater structural pressure.
Early pressure
A moderate signal is present, but not yet dominant.Material pressure
The family is meaningfully contributing to system stress.Heavy pressure
This family is one of the primary reasons the score is elevated.Public bands
Score interpretation
0–20Stable
21–40Watch
41–60Fragile
61–80High Stress
81–100Critical
Bands are interpretive and designed to support prioritization, not prediction. Stable is intentionally broad at launch; low-end scores are not visually stretched beyond what the methodology supports.
Signals
What signals are for
Munimetric Signals highlight meaningful developments that help explain changes in system conditions over time. They surface notable deterioration, emerging pressure, and changes that may matter before they are reflected in long-run outcomes.
Compliance and operational deterioration
Infrastructure and capital burden
Customer-base and local economic shifts
Affordability and rate pressure
Governance and disclosure concerns
Rapid changes in system conditions
Signal design is part of the broader research framework and may evolve as coverage expands, source quality improves, and historical validation deepens. Some document-derived utility-finance indicators are being staged for future methodology versions as source coverage and validation mature; they are not all active in the current live headline score.
Coverage and scope
Coverage boundary
Coverage supports nationwide drinking-water infrastructure, with public exposure staged by confidence, readiness, and entitlement controls. Confidence reflects evidence depth, data availability, entity-mapping quality, source freshness, and provenance completeness. Lower-confidence outputs are flagged and should be interpreted with more caution.
Community drinking-water systems come first.
Wastewater remains contextual in the launch stage unless coverage and linkage quality are strong enough for reliable inclusion.
Parent-government fiscal conditions are treated as structural context, not as a fast-moving event layer.
Research and monitoring only. Not a rating agency, not investment advice, and not a municipal advisor.
Interpretation
What this methodology is and is not
Munimetric is built to make municipal infrastructure stress easier to interpret, compare, and monitor over time. It is not intended to be a black-box output, and it is not presented as a substitute for primary documents, local context, or professional judgment.
Methodology updates are versioned. Public materials describe what the score measures and how to interpret it, while detailed trigger logic, threshold calibration, and internal validation remain part of the protected research framework.