What is the Munimetric score for Idaho?

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

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

Idaho 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 Idaho 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 Idaho 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 Idaho?

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

Does Munimetric track boil water advisories in Idaho?

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 Idaho have recent recorded drinking-water violations?

Stored public records show 26 covered systems with recent drinking-water violations, with 199 recorded violations across 51 covered systems in the recent 3 years window.

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

Stored contaminant-monitoring summaries are present for 50 covered systems; 36 systems have PFAS detection context in this state summary.

How does Munimetric summarize lead & copper context in Idaho?

Stored lead & copper summaries are present for 50 covered systems; 14 systems have violation or action-level context in this state summary.

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

Stored identity records group covered Idaho systems by source-water type: Surface water: 6, Groundwater: 45.

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

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

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 / Idaho

Idaho

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

Idaho municipal water system monitoring across 51 scored service markets serving approximately 1.3 million people, with Munimetric scores, stress signals, market rankings, and infrastructure risk context. This state profile highlights what is happening and why it matters using water-system, fiscal, capital, and signal context.

Idaho has an average MISI infrastructure stress score of 22.5/100 in the Watch band as of 2026-08-18. Public records summarize recent drinking-water violations, PFAS monitoring records, lead and copper context, and source-water mix across 51 covered systems. Updated May 2026.

National context

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

51Markets scored

22.5Headline composite

~1.3MPop. served

215Active signals

Band distribution (MISI)

State headline composite

Component of current headline composite

Infrastructure Stress21.0 / 100

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

Socioeconomic Stress1.4 / 100

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

Observability Stress0.1 / 100

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

22.5 headline compositeIdaho state composite51 markets~1.3M people served

Falls Water Company Inc38.5watch Ammon City of37.9watch Capitol Water Corp34.0watch Eagle Water Company Inc32.8watch Mountain Home City of32.7watch Rexburg City of32.0watch Rathdrum City of31.9watch Middleton City of31.5watch Burley Water Dept30.5watch Star Sewer and Water Dist Water System29.3watch Payette City of29.1watch Ketchum City of28.0watch Blackfoot City of28.0watch City of Idaho Falls27.6watch Chubbuck City of27.4watch Pocatello City of27.4watch Shelley City of27.4watch Lewiston City of27.4watch St Anthony27.4watch Buhl City of27.2watch Twin Falls City of27.2watch Rigby City of26.8watch Fort Hall26.8watch Mountain Home Air Force Base26.6watch Jerome City of23.8watch Sun Valley Water and Sewer Dist23.7watch Garden City Water and Sewer System23.3watch United Water Idaho Inc23.1watch Rupert City of21.9watch Eagle, City of (eastern Zone)21.4watch Sandpoint Public Works Dept21.3watch Hailey Water and Sewer20.5watch Kuna City of19.3stable Meridian Water Dept19.1stable Central Shoshone County Water Dist18.2stable Caldwell City of17.5stable Nampa City of17.5stable Moscow Water Dept17.5stable Weiser City of16.9stable Lewiston Orchards Irrigation Dist15.8stable Post Falls City of13.4stable Preston City of13.1stable Avondale Irrigation Dist12.3stable East Greenacres Water Dist12.3stable Emmett City of11.9stable Filer Water Works11.5stable Fruitland City of11.1stable University of Idaho7.9stable American Falls City of7.9stable Coeur D Alene City of5.9stable Hayden Lake Irrigation Dist5.9stable Falls Water Company Inc38.5watch Ammon City of37.9watch Capitol Water Corp34.0watch Eagle Water Company Inc32.8watch Mountain Home City of32.7watch Rexburg City of32.0watch Rathdrum City of31.9watch Middleton City of31.5watch Burley Water Dept30.5watch Star Sewer and Water Dist Water System29.3watch Payette City of29.1watch Ketchum City of28.0watch Blackfoot City of28.0watch City of Idaho Falls27.6watch Chubbuck City of27.4watch Pocatello City of27.4watch Shelley City of27.4watch Lewiston City of27.4watch St Anthony27.4watch Buhl City of27.2watch Twin Falls City of27.2watch Rigby City of26.8watch Fort Hall26.8watch Mountain Home Air Force Base26.6watch Jerome City of23.8watch Sun Valley Water and Sewer Dist23.7watch Garden City Water and Sewer System23.3watch United Water Idaho Inc23.1watch Rupert City of21.9watch Eagle, City of (eastern Zone)21.4watch Sandpoint Public Works Dept21.3watch Hailey Water and Sewer20.5watch Kuna City of19.3stable Meridian Water Dept19.1stable Central Shoshone County Water Dist18.2stable Caldwell City of17.5stable Nampa City of17.5stable Moscow Water Dept17.5stable Weiser City of16.9stable Lewiston Orchards Irrigation Dist15.8stable Post Falls City of13.4stable Preston City of13.1stable Avondale Irrigation Dist12.3stable East Greenacres Water Dist12.3stable Emmett City of11.9stable Filer Water Works11.5stable Fruitland City of11.1stable University of Idaho7.9stable American Falls City of7.9stable Coeur D Alene City of5.9stable Hayden Lake Irrigation Dist5.9stable

State interpretation guide

How to read Idaho headline composite

Plain-language summary

Idaho currently shows an average MISI headline composite of 22.5 versus a national average of 24.4. 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

51 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 saved monitoring after research access is enabled to follow high-stress systems over time.

Priority Idaho 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

26 of 51Systems with recent public violation rows.

Source-water mix51 systems

Surface water6
Groundwater45
Purchased water0
Mixed source0
Not stored0

Latest identity snapshot: Jun 30, 2026

Coverage

Violation, enforcement, and compliance-burden counts use the recent 3 years window for dated stored records.
Drinking-water identity snapshots are stored for 51 of 51 included scored systems.
PFAS monitoring summary records are stored for 50 of 51 included systems; missing records are not treated as non-detections.
Lead and copper summary records are stored for 50 of 51 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 Idaho have recent recorded drinking-water violations?: Stored public records show 26 covered systems with recent drinking-water violations, with 199 recorded violations across 51 covered systems in the recent 3 years window.
How does Munimetric summarize PFAS public-record context in Idaho?: Stored contaminant-monitoring summaries are present for 50 covered systems; 36 systems have PFAS detection context in this state summary.
How does Munimetric summarize lead & copper context in Idaho?: Stored lead & copper summaries are present for 50 covered systems; 14 systems have violation or action-level context in this state summary.
What source-water types are represented across covered Idaho systems?: Stored identity records group covered Idaho systems by source-water type: Surface water: 6, Groundwater: 45.
Where can I find official drinking-water records for Idaho?: The Official records drawer lists Public drinking-water profile, Contaminant monitoring records links where currently available for Idaho.
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
Falls Water Company IncID7100030	22,650	Groundwater	50	24	recent violations recorded, recent enforcement history, recent monitoring/reporting failures, PFAS detections in stored records, lead/copper context
Capitol Water CorpID4010022	9,000	Groundwater	34	98	recent violations recorded, recent enforcement history, recent monitoring/reporting failures, PFAS detections in stored records, lead/copper context
Sun Valley Water And Sewer DistID5070051	3,400	Groundwater	22	48	recent violations recorded, recent enforcement history, recent monitoring/reporting failures
Ammon City OfID7100004	17,338	Groundwater	12	28	recent violations recorded, recent enforcement history, recent monitoring/reporting failures, PFAS detections in stored records, lead/copper context
Fruitland City OfID3380005	7,458	Surface water	10	84	recent violations recorded, recent enforcement history
Preston City OfID6210014	5,591	Groundwater	7	24	recent violations recorded, recent enforcement history, recent monitoring/reporting failures
Filer Water WorksID5420021	2,858	Groundwater	6	42	recent violations recorded, recent enforcement history
Rigby City OfID7260032	5,400	Groundwater	6	24	recent violations recorded, recent enforcement history, recent monitoring/reporting failures, PFAS detections in stored records, 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

51 of the community drinking-water systems in Idaho are currently scored. Analytics below are calculated from this covered subset only. Covered systems serve approximately 1.3M people.

What the Data Suggests

Idaho has 51 scored service markets in the Munimetric coverage set, covering roughly 1.3 million residents in total. At the latest reading, the state-level average lands at 22.5 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 stands out as the dominant contributor to headline stress (13.4 points average), with Capex Pressure a distant second at 7.6. That pattern suggests a particular kind of pressure — concentrated rather than broadly distributed.

215 active signals are recorded across state markets. The most prevalent is Current Drought Severity, affecting 51 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 22.5 as of Aug 18, 2026. Movement since Aug 17, 2026 is flat.

Compact summary from 96 stored state observations.

State Family Contribution Summary

Operational Stress13.4 / 20.0

Capex Pressure7.6 / 20.0

Governance Risk0.6 / 20.0

Revenue Fragility0.5 / 20.0

Rate Constraint0.4 / 20.0

Signals

Signal Frequency

Signal	Severity	Markets affected	% of scored
Current Drought Severity	high	51	100%
Compliance Escalation	high	41	80%
PFAS Contamination Risk	high	36	71%
Climate Hazard Exposure	medium	36	71%
Monitoring / Reporting Failures	medium	16	31%
Lead & Copper Rule Risk	high	14	27%
Parent-Government Fiscal Stress	medium	7	14%
High-AGI Out-Migration	high	7	14%
Infrastructure Capital Gap	high	3	6%
Income Erosion	medium	3	6%
Utility Data Staleness	high	1	2%

Markets

Top Markets

#	Market	Score	Band	Population	Signals
1	Falls Water Company Inc	38.5	Watch	23K	7
2	Ammon City of	37.9	Watch	17K	6
3	Capitol Water Corp	34.0	Watch	9K	6
4	Eagle Water Company Inc	32.8	Watch	11K	6
5	Mountain Home City of	32.7	Watch	15K	7
6	Rexburg City of	32.0	Watch	41K	6
7	Rathdrum City of	31.9	Watch	10K	6
8	Middleton City of	31.5	Watch	13K	5
9	Burley Water Dept	30.5	Watch	10K	6
10	Star Sewer and Water Dist Water System	29.3	Watch	14K	5
11	Payette City of	29.1	Watch	8K	5
12	Ketchum City of	28.0	Watch	4K	5
13	Blackfoot City of	28.0	Watch	13K	5
14	City of Idaho Falls	27.6	Watch	69K	5
15	Chubbuck City of	27.4	Watch	16K	4
16	Pocatello City of	27.4	Watch	58K	4
17	Shelley City of	27.4	Watch	4K	4
18	Lewiston City of	27.4	Watch	15K	4
19	St Anthony	27.4	Watch	4K	4
20	Buhl City of	27.2	Watch	5K	5

Comparison

State Comparison

National average: 24.4

Rank	State	Avg Score	Band	Markets	Delta vs State
33	Nevada	22.6	Watch	44	+0.1
34	Delaware	22.6	Watch	34	+0.0
35	Idaho	22.5	Watch	51	+0.0
36	California	21.7	Watch	711	-0.8
37	New York	21.6	Watch	347	-1.0

Analytical posture

State Stress Analytics

Score Distribution

Distribution of scored market scores with the state average overlay.

51 markets plotted.

Stress vs Population

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

51 markets plotted.

Population View

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

~1.3M people served by 51 systems in Idaho

Stable

Watch

Fragile

High Stress

Critical

51 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

22.5

Trend

+22.5

Observations

Extended layers

Advanced State Context

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

Markets & signals

Priority Views

#	Market	Score	Band	Population	Signals
1	Falls Water Company Inc	38.5	Watch	23K	7
2	Ammon City of	37.9	Watch	17K	6
3	Capitol Water Corp	34.0	Watch	9K	6
4	Eagle Water Company Inc	32.8	Watch	11K	6
5	Mountain Home City of	32.7	Watch	15K	7
6	Rexburg City of	32.0	Watch	41K	6
7	Rathdrum City of	31.9	Watch	10K	6
8	Middleton City of	31.5	Watch	13K	5
9	Burley Water Dept	30.5	Watch	10K	6
10	Star Sewer and Water Dist Water System	29.3	Watch	14K	5
11	Payette City of	29.1	Watch	8K	5
12	Ketchum City of	28.0	Watch	4K	5
13	Blackfoot City of	28.0	Watch	13K	5
14	City of Idaho Falls	27.6	Watch	69K	5
15	Chubbuck City of	27.4	Watch	16K	4
16	Pocatello City of	27.4	Watch	58K	4
17	Shelley City of	27.4	Watch	4K	4
18	Lewiston City of	27.4	Watch	15K	4
19	St Anthony	27.4	Watch	4K	4
20	Buhl City of	27.2	Watch	5K	5

Detailed records

Registers

#	Market	Score	Band	Population	Signals
1	Falls Water Company Inc	38.5	Watch	23K	7
2	Ammon City of	37.9	Watch	17K	6
3	Capitol Water Corp	34.0	Watch	9K	6
4	Eagle Water Company Inc	32.8	Watch	11K	6
5	Mountain Home City of	32.7	Watch	15K	7
6	Rexburg City of	32.0	Watch	41K	6
7	Rathdrum City of	31.9	Watch	10K	6
8	Middleton City of	31.5	Watch	13K	5
9	Burley Water Dept	30.5	Watch	10K	6
10	Star Sewer and Water Dist Water System	29.3	Watch	14K	5
11	Payette City of	29.1	Watch	8K	5
12	Ketchum City of	28.0	Watch	4K	5
13	Blackfoot City of	28.0	Watch	13K	5
14	City of Idaho Falls	27.6	Watch	69K	5
15	Chubbuck City of	27.4	Watch	16K	4
16	Pocatello City of	27.4	Watch	58K	4
17	Shelley City of	27.4	Watch	4K	4
18	Lewiston City of	27.4	Watch	15K	4
19	St Anthony	27.4	Watch	4K	4
20	Buhl City of	27.2	Watch	5K	5

Munimetric tracks infrastructure stress across 51 community drinking-water systems in Idaho, 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 Idaho compares nationally.

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

Research access covers saved monitoring, alerts, recurring briefs, and team review.

Get the Water Stress Brief Request research access

Water Infrastructure in Idaho

Munimetric tracks infrastructure stress across 51 community drinking-water systems in Idaho. 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 Idaho 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 Idaho?: Munimetric assigns a state-level average MISI score based on the individual scores of all covered community water systems in Idaho. 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 Idaho face the most infrastructure stress?: The state page ranks the highest-stress systems in Idaho 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 Idaho compare to other states for drinking water infrastructure risk?: Idaho 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 Idaho 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 Idaho 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 Idaho?: Munimetric tracks signals such as compliance escalation, monitoring and reporting failures, population decline, income erosion, data staleness, and parent-government fiscal stress across Idaho water systems.
Does Munimetric track boil water advisories in Idaho?: 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.