What is the Munimetric score for South Dakota?

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

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

South Dakota 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 South Dakota 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 South Dakota 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 South Dakota?

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

Does Munimetric track boil water advisories in South Dakota?

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 South Dakota have recent recorded drinking-water violations?

Stored public records show 6 covered systems with recent drinking-water violations, with 31 recorded violations across 46 covered systems in the recent 3 years window.

How does Munimetric summarize PFAS public-record context in South Dakota?

Stored contaminant-monitoring summaries are present for 44 covered systems; 38 systems have PFAS detection context in this state summary.

How does Munimetric summarize lead & copper context in South Dakota?

Stored lead & copper summaries are present for 43 covered systems; 20 systems have violation or action-level context in this state summary.

What source-water types are represented across covered South Dakota systems?

Stored identity records group covered South Dakota systems by source-water type: Surface water: 16, Groundwater: 30.

Where can I find official drinking-water records for South Dakota?

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

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 / South Dakota

South Dakota

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

Statewide Munimetric profile for South Dakota, covering drinking-water market scores, signal activity, infrastructure stress context, and population insights across 46 scored service markets serving approximately 669,591 people. This state profile highlights what is happening and why it matters using water-system, fiscal, capital, and signal context.

South Dakota has an average MISI infrastructure stress score of 24.3/100 in the Watch band as of 2026-08-16. Public records summarize recent drinking-water violations, PFAS monitoring records, lead and copper context, and source-water mix across 46 covered systems. Updated May 2026.

National context

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

46Markets scored

24.3Headline composite

~670KPop. served

210Active signals

Band distribution (MISI)

State headline composite

Component of current headline composite

Infrastructure Stress17.0 / 100

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

Socioeconomic Stress3.4 / 100

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

Observability Stress3.9 / 100

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

24.3 headline compositeSouth Dakota state composite46 markets~670K people served

Eagle Butte43.3fragile Tm Rural Water District41.0fragile Clay Rural Water System40.3fragile Brown-Day-Marshall Rws38.9watch Aberdeen35.2watch Web Water Development Association34.6watch Brandon31.8watch Vermillion31.7watch Box Elder31.7watch Black Hawk Water User District30.8watch Brookings Municipal Utilities30.2watch Dell Rapids29.8watch Spearfish28.9watch Rapid Valley Sanitary District27.8watch Big Sioux Community Water System27.4watch Sioux Falls26.8watch Grant-Roberts Rural Water System25.6watch Madison25.5watch Lincoln County Rural Water System25.5watch Yankton25.0watch Mobridge25.0watch Pine Ridge Water System24.7watch Ellsworth Afb24.5watch Pierre23.5watch Rosebud Rural Water System22.7watch Brookings-Deuel Rural Water System22.2watch Kingbrook I Rural Water System22.2watch Randall Community Water District21.9watch Mitchell21.9watch Minnehaha Community Water Corp21.8watch Sioux Rural Water System21.4watch Huron21.2watch Mid-Dakota Rural Water21.1watch Rapid City20.8watch Watertown Municipal Utilities20.7watch Bon Homme-Yankton Rws20.6watch South Lincoln Rural Water System19.5stable Harrisburg19.0stable Tea19.0stable Hot Springs17.4stable Wr/Lj - Mni Wiconi14.9stable Nps-Mount Rushmore National Memorial13.0stable Sturgis9.5stable Milbank8.0stable Belle Fourche5.9stable Tripp County Water User District4.0stable Eagle Butte43.3fragile Tm Rural Water District41.0fragile Clay Rural Water System40.3fragile Brown-Day-Marshall Rws38.9watch Aberdeen35.2watch Web Water Development Association34.6watch Brandon31.8watch Vermillion31.7watch Box Elder31.7watch Black Hawk Water User District30.8watch Brookings Municipal Utilities30.2watch Dell Rapids29.8watch Spearfish28.9watch Rapid Valley Sanitary District27.8watch Big Sioux Community Water System27.4watch Sioux Falls26.8watch Grant-Roberts Rural Water System25.6watch Madison25.5watch Lincoln County Rural Water System25.5watch Yankton25.0watch Mobridge25.0watch Pine Ridge Water System24.7watch Ellsworth Afb24.5watch Pierre23.5watch Rosebud Rural Water System22.7watch Brookings-Deuel Rural Water System22.2watch Kingbrook I Rural Water System22.2watch Randall Community Water District21.9watch Mitchell21.9watch Minnehaha Community Water Corp21.8watch Sioux Rural Water System21.4watch Huron21.2watch Mid-Dakota Rural Water21.1watch Rapid City20.8watch Watertown Municipal Utilities20.7watch Bon Homme-Yankton Rws20.6watch South Lincoln Rural Water System19.5stable Harrisburg19.0stable Tea19.0stable Hot Springs17.4stable Wr/Lj - Mni Wiconi14.9stable Nps-Mount Rushmore National Memorial13.0stable Sturgis9.5stable Milbank8.0stable Belle Fourche5.9stable Tripp County Water User District4.0stable

State interpretation guide

How to read South Dakota headline composite

Plain-language summary

South Dakota currently shows an average MISI headline composite of 24.3 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

46 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 South Dakota 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

6 of 46Systems with recent public violation rows.

Source-water mix46 systems

Surface water16
Groundwater30
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 45 of 46 included scored systems.
PFAS monitoring summary records are stored for 44 of 46 included systems; missing records are not treated as non-detections.
Lead and copper summary records are stored for 43 of 46 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 South Dakota have recent recorded drinking-water violations?: Stored public records show 6 covered systems with recent drinking-water violations, with 31 recorded violations across 46 covered systems in the recent 3 years window.
How does Munimetric summarize PFAS public-record context in South Dakota?: Stored contaminant-monitoring summaries are present for 44 covered systems; 38 systems have PFAS detection context in this state summary.
How does Munimetric summarize lead & copper context in South Dakota?: Stored lead & copper summaries are present for 43 covered systems; 20 systems have violation or action-level context in this state summary.
What source-water types are represented across covered South Dakota systems?: Stored identity records group covered South Dakota systems by source-water type: Surface water: 16, Groundwater: 30.
Where can I find official drinking-water records for South Dakota?: The Official records drawer lists Public drinking-water profile, Contaminant monitoring records links where currently available for South Dakota.
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
AberdeenSD4600020	27,989	Surface water	11	32	recent violations recorded, recent enforcement history, PFAS detections in stored records, lead/copper context
Eagle ButteSD4600010	4,000	Surface water	8	16	recent violations recorded, recent enforcement history, recent monitoring/reporting failures, PFAS detections in stored records, lead/copper context
Box ElderSD4600046	14,000	Groundwater	6	14	recent violations recorded, recent enforcement history, PFAS detections in stored records
Lincoln County Rural Water SystemSD4600304	5,965	Groundwater	2	6	recent violations recorded, recent enforcement history, recent monitoring/reporting failures, PFAS detections in stored records, lead/copper context
South Lincoln Rural Water SystemSD4600870	5,250	Groundwater	2	6	recent violations recorded, recent enforcement history, recent monitoring/reporting failures, PFAS detections in stored records
MitchellSD4600214	15,651	Surface water	2	4	recent violations recorded, recent enforcement history, PFAS detections in stored records
Sioux FallsSD4600294	216,462	Surface water	0	0	PFAS detections in stored records, lead/copper context
Brookings Municipal UtilitiesSD4600071	23,377	Groundwater	0	0	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

46 of the community drinking-water systems in South Dakota are currently scored. Analytics below are calculated from this covered subset only. Covered systems serve approximately 670K people.

What the Data Suggests

South Dakota has 46 scored service markets in the Munimetric coverage set, covering roughly 669,591 residents in total. At the latest reading, the state-level average lands at 24.3 out of 100, indicating early but meaningful signs of structural stress in aggregate. A relatively small share — roughly 7% — currently sit in elevated-stress bands.

Across state markets, Capex Pressure stands out as the dominant contributor to headline stress (10.0 points average), with Operational Stress a distant second at 7.0. That pattern suggests a particular kind of pressure — concentrated rather than broadly distributed.

210 active signals are recorded across state markets. The most prevalent is PFAS Contamination Risk, affecting 38 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 24.3 as of Aug 16, 2026. Movement since Aug 15, 2026 is flat.

Compact summary from 94 stored state observations.

State Family Contribution Summary

Capex Pressure10.0 / 20.0

Operational Stress7.0 / 20.0

Governance Risk5.1 / 20.0

Revenue Fragility2.2 / 20.0

Rate Constraint0.0 / 20.0

Signals

Signal Frequency

Signal	Severity	Markets affected	% of scored
PFAS Contamination Risk	high	38	83%
Current Drought Severity	high	37	80%
Utility Data Staleness	high	34	74%
Climate Hazard Exposure	medium	26	57%
Lead & Copper Rule Risk	high	20	43%
High-AGI Out-Migration	high	18	39%
Compliance Escalation	high	14	30%
Parent-Government Fiscal Stress	high	13	28%
Population Served Decline	high	6	13%
Infrastructure Capital Gap	high	4	9%

Markets

Top Markets

#	Market	Score	Band	Population	Signals
1	Eagle Butte	43.3	Fragile	4K	7
2	Tm Rural Water District	41.0	Fragile	4K	7
3	Clay Rural Water System	40.3	Fragile	5K	6
4	Brown-Day-Marshall Rws	38.9	Watch	6K	7
5	Aberdeen	35.2	Watch	28K	6
6	Web Water Development Association	34.6	Watch	21K	6
7	Brandon	31.8	Watch	11K	6
8	Vermillion	31.7	Watch	0	5
9	Box Elder	31.7	Watch	14K	5
10	Black Hawk Water User District	30.8	Watch	5K	6
11	Brookings Municipal Utilities	30.2	Watch	23K	6
12	Dell Rapids	29.8	Watch	4K	5
13	Spearfish	28.9	Watch	44	4
14	Rapid Valley Sanitary District	27.8	Watch	11K	5
15	Big Sioux Community Water System	27.4	Watch	6K	5
16	Sioux Falls	26.8	Watch	216K	5
17	Grant-Roberts Rural Water System	25.6	Watch	5K	5
18	Madison	25.5	Watch	6K	4
19	Lincoln County Rural Water System	25.5	Watch	6K	5
20	Yankton	25.0	Watch	15K	5

Comparison

State Comparison

National average: 24.4

Rank	State	Avg Score	Band	Markets	Delta vs State
24	Mississippi	24.5	Watch	208	+0.1
25	Rhode Island	24.3	Watch	29	+0.0
26	South Dakota	24.3	Watch	46	+0.0
27	Wisconsin	24.1	Watch	195	-0.3
28	Maryland	23.7	Watch	78	-0.7

Analytical posture

State Stress Analytics

Score Distribution

Distribution of scored market scores with the state average overlay.

46 markets plotted.

Stress vs Population

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

45 markets plotted.

Population View

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

~670K people served by 46 systems in South Dakota

Stable

Watch

Fragile

High Stress

Critical

46 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

24.3

Trend

+24.3

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	Eagle Butte	43.3	Fragile	4K	7
2	Tm Rural Water District	41.0	Fragile	4K	7
3	Clay Rural Water System	40.3	Fragile	5K	6
4	Brown-Day-Marshall Rws	38.9	Watch	6K	7
5	Aberdeen	35.2	Watch	28K	6
6	Web Water Development Association	34.6	Watch	21K	6
7	Brandon	31.8	Watch	11K	6
8	Vermillion	31.7	Watch	0	5
9	Box Elder	31.7	Watch	14K	5
10	Black Hawk Water User District	30.8	Watch	5K	6
11	Brookings Municipal Utilities	30.2	Watch	23K	6
12	Dell Rapids	29.8	Watch	4K	5
13	Spearfish	28.9	Watch	44	4
14	Rapid Valley Sanitary District	27.8	Watch	11K	5
15	Big Sioux Community Water System	27.4	Watch	6K	5
16	Sioux Falls	26.8	Watch	216K	5
17	Grant-Roberts Rural Water System	25.6	Watch	5K	5
18	Madison	25.5	Watch	6K	4
19	Lincoln County Rural Water System	25.5	Watch	6K	5
20	Yankton	25.0	Watch	15K	5

Detailed records

Registers

#	Market	Score	Band	Population	Signals
1	Eagle Butte	43.3	Fragile	4K	7
2	Tm Rural Water District	41.0	Fragile	4K	7
3	Clay Rural Water System	40.3	Fragile	5K	6
4	Brown-Day-Marshall Rws	38.9	Watch	6K	7
5	Aberdeen	35.2	Watch	28K	6
6	Web Water Development Association	34.6	Watch	21K	6
7	Brandon	31.8	Watch	11K	6
8	Vermillion	31.7	Watch	0	5
9	Box Elder	31.7	Watch	14K	5
10	Black Hawk Water User District	30.8	Watch	5K	6
11	Brookings Municipal Utilities	30.2	Watch	23K	6
12	Dell Rapids	29.8	Watch	4K	5
13	Spearfish	28.9	Watch	44	4
14	Rapid Valley Sanitary District	27.8	Watch	11K	5
15	Big Sioux Community Water System	27.4	Watch	6K	5
16	Sioux Falls	26.8	Watch	216K	5
17	Grant-Roberts Rural Water System	25.6	Watch	5K	5
18	Madison	25.5	Watch	6K	4
19	Lincoln County Rural Water System	25.5	Watch	6K	5
20	Yankton	25.0	Watch	15K	5

Munimetric tracks infrastructure stress across 46 community drinking-water systems in South Dakota, 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 South Dakota compares nationally.

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

Munimetric tracks infrastructure stress across 46 community drinking-water systems in South Dakota. 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 South Dakota 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 South Dakota?: Munimetric assigns a state-level average MISI score based on the individual scores of all covered community water systems in South Dakota. 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 South Dakota face the most infrastructure stress?: The state page ranks the highest-stress systems in South Dakota 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 South Dakota compare to other states for drinking water infrastructure risk?: South Dakota 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 South Dakota 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 South Dakota 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 South Dakota?: Munimetric tracks signals such as compliance escalation, monitoring and reporting failures, population decline, income erosion, data staleness, and parent-government fiscal stress across South Dakota water systems.
Does Munimetric track boil water advisories in South Dakota?: 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.