MISI Score
16.9
Stable
Project NC / Martin County
Williamston
BOTH · Martin CountyDistressedPWSID NC0459010
Score Confidence
0.9%
Peer Percentile
21.8th
As of
Sep 10, 2026
EXPLANATION
Score Drivers
- MISI score is 16.924 (Stable).
- PFAS Contamination Risk adds 5.998 points. PFAS contamination contributes +6: detections=4, max result=9.030000 ng/L. variance weighting adjusted headline contribution from 6 to 5.998.
- Compliance Escalation adds 5.929 points. Operational compliance contributes +6: 10 violations or enforcement actions have been recorded within the last three years. variance weighting adjusted headline contribution from 6.000000 to 5.929.
- Lead & Copper Rule Risk adds 4.997 points. Lead and copper risk contributes +5: lead sample exceedances=0, copper sample exceedances=0, legacy action-level exceedances=0, open LCR violations=0. variance weighting adjusted headline contribution from 5 to 4.997.
- Missing or unresolved factors: Infrastructure Capital Gap, Parent-Government Fiscal Stress.
MARKET INTERPRETATION
What the data suggests
Williamston is a smaller community water system, serving approximately 7,650 residents. At the latest reading, the system shows limited signs of structural stress.
The score is being driven mainly by Capex Pressure, with Operational Stress contributing at a lower level. The pressure is distributed rather than concentrated in a single dimension.
3 active stress signals are attached to this system. The breadth of active signals, even without concentrated high severity, suggests pressure across more than one dimension.
Within its peer cohort, this system ranks around the 22nd percentile on measured stress, placing it below typical peer-group stress levels.
Recent score history has been relatively steady, consistent with the system's overall profile.
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.
SCORE STACK
Family Contributions
Operational Stress5.9 / 20.0
Capex Pressure11.0 / 20.0
Revenue Fragility0.0 / 20.0
Rate Constraint0.0 / 20.0
Governance Risk0.0 / 20.0
SL 2020-79
SWIA Assessment History
| 2024 | 2023 | 2022 | 2021 | 2019 |
|---|---|---|---|---|
| 8 | 7 | 10 | 10 | 11 |
ACTIVE SIGNALS
3 Signals
PFAS Contamination Risk
PFAS detections can force expensive treatment retrofits and accelerate capital plans.
Score impact: 6.0 · Family: Capex Pressure
Compliance Escalation
Repeated or serious compliance failures often indicate rising operational and infrastructure stress.
Score impact: 5.9 · Family: Operational Stress
Lead & Copper Rule Risk
Lead and copper exceedances and replacement obligations can drive near-term treatment and capital pressure.
Score impact: 5.0 · Family: Capex Pressure
HISTORY
Score Trend
Latest
16.9
Trend
+4.9
Observations
113
NC TREASURER FBA
Financial Benchmarks
Population5,019
General Fund Expenditure$8.6M
Fund Balance Available$5.2M
Fund Balance %60.6%
Cash & Investments$13.1M
Assessed Valuation$450.7M
Tax Rate0.9
Effective Tax Rate0.6
Tax Collection %89.2%
Amount Uncollected$400K
Days Cash on Hand
493
Days Cash As Of
Jun 30, 2024
Population Served
7,650