Public water system profile

SPEARFISH

Explore available public water records for SPEARFISH (PWSID SD4600311). Find annual reports, results listed in those reports, official sources, and clear notes about what the records can and cannot show. This page does not show conditions at a specific tap.

View report rows

System Snapshot

Available system-level context

This snapshot shows the identity and context fields currently available for SPEARFISH (PWSID SD4600311). Read it with the source links and limitations below.

Last updated: Data reviewed:

System identity

PWSID
SD4600311
State
South Dakota
Linked communities
Spearfish
County context
Not listed in current record
System type
Not listed in current record
Source water
Groundwater produced from local wells
Population served
Not listed in current record
Service connections
Not listed in current record
Latest reviewed report
2025 report link found
Data updated
2026-07-21

Read these as system-level fields from reviewed public records. Confirm provider and address-specific questions with official utility, city, state, or EPA sources.

Report-Listed Rows

Report-listed rows summarized from the latest reviewed report

2 report-listed rows are summarized for SPEARFISH. A listed row is not the same thing as a current advisory or household tap result.

Report year
2025
Rows summarized
2
Source tables represented
1
Scope
Past reporting period
Report-row preview from the latest reviewed report for SPEARFISH
Substance and testing periodReported valueRange in reportLimit or standardSource tableReport-printed status
Alpha emittersTesting period: February 23, 20214 pCi/lHighest Level DetectedND - 4MCL: 15; MCLG: 02025 Table of Detected Regulated Contaminants For Spearfish (EPA ID 0311)Page 4Typical source, as printed: Erosion of natural depositsSource table has no violation or compliance column.
FluorideTesting period: March 19, 20250.76 ppmHighest Level Detected0.45 - 0.76MCL: 4; MCLG: <42025 Table of Detected Regulated Contaminants For Spearfish (EPA ID 0311)Page 4Typical source, as printed: Erosion of natural deposits; water additive which promotes strong teeth; discharge from fertilizer and aluminum factoriesSource table has no violation or compliance column.

Report row

Alpha emitters

Range in report
ND - 4 pCi/l
Highest Level Detected
4 pCi/l
Testing period
February 23, 2021
Sites above action level
Not applicable to this summarized entry
Limit or standard
MCL: 15; MCLG: 0
Report-printed status
Source table has no violation or compliance column.

Source · Page 4

2025 Table of Detected Regulated Contaminants For Spearfish (EPA ID 0311)

Typical source, as printed: Erosion of natural deposits

Report row

Fluoride

Range in report
0.45 - 0.76 ppm
Highest Level Detected
0.76 ppm
Testing period
March 19, 2025
Sites above action level
Not applicable to this summarized entry
Limit or standard
MCL: 4; MCLG: <4
Report-printed status
Source table has no violation or compliance column.

Source · Page 4

2025 Table of Detected Regulated Contaminants For Spearfish (EPA ID 0311)

Typical source, as printed: Erosion of natural deposits; water additive which promotes strong teeth; discharge from fertilizer and aluminum factories

Source report notes

Source: City of Spearfish 2025 Drinking Water Report. Retrieved 2026-07-19.

  • Applies to: Alpha emitters

    The source prints a February 23, 2021 sample date inside its 2025 report; that date is retained explicitly. The table has no violation or compliance column, so no status is inferred.

  • Applies to: Fluoride

    Three regulated rows lie between the selected Alpha emitters and Fluoride rows. The table has no violation or compliance column, so no status is inferred.

Review the linked source report for definitions, footnotes, and official wording.

Violation Records

Violation records shown on this page

This section shows 0 system-scoped violation detail records currently included for SPEARFISH. Annual reports and current notices can use different timing and terminology.

No system-scoped violation detail records are included in the available reviewed records for this system. This is not an official compliance finding. Check the official utility, state, or EPA source for current compliance and notice information.

Source notes for this system mention violation-related context, but this page does not currently display separate system-scoped violation detail records.

Important limitation

Profile summary note

This page summarizes public records reviewed by this site. It does not replace official notices, utility updates, or state drinking water information.

System profile limitations

  • The bounded preview shows only Alpha emitters and Fluoride from physical PDF page 4. The table has no violation or compliance column, so no status is inferred.
  • The Alpha emitters row carries a February 23, 2021 sample date inside the 2025 report. The older sample date remains visible and is not presented as a 2025 measurement.
  • The report's other results, award and report-level safety prose, source assessment, definitions, notices, health language, and footnotes are not reproduced.
  • Official provider and state links are supplied without claiming that no active advisory or other material notice exists. Those sources can change after review.
  • The Spearfish relationship supports navigation only and does not prove exclusive coverage or the provider for every address.
  • Address-level service can vary. Confirm the serving provider with a bill, account portal, utility, city, or state source.
  • The Spearfish Alert Center showed a February 4, 2026 Exit 17 area sewer-repair update saying normal water usage could resume. It is preserved as area-specific, past operational wording and is not treated as a systemwide advisory or all-clear.
  • This page shows summarized entries from the available report. It does not include a complete contaminant or violation table.
  • Missing fields are not findings. They mean the field is not shown on this page from the records currently available.
  • This page summarizes available public records. It may not include every update, notice, or urgent official advisory.

Latest Reviewed Report

Latest reviewed report found by this site

The 2025 report found for SPEARFISH summarizes a past reporting period. It is not a live alert page.

Utility reportReport data updated:

2025 Drinking Water Report

Open 2025 water quality report

The 2025 report link is available for SPEARFISH. Use the linked source report for the full table, definitions, footnotes, and official context. This page includes summarized entries from the available report. They are not a complete copy of the report table.

Report year
2025
Summarized entries shown
2
Source name
City of Spearfish 2025 Drinking Water Report
Source URL
Open report source
Source retrieved
2026-07-19
Last reviewed
2026-07-19

Use the linked source report for the full table, definitions, footnotes, and official context.

Data coverage

This page summarizes selected public records for this public water system. It may not include every report, update, current notice, or address-level service detail.

Latest reviewed report
2025 report link found
Report-listed rows
2 summarized report entries shown
Detailed violation records
No detailed system-scoped records displayed
Population served
Not listed in current record
Service connections
Not listed in current record
City context
Spearfish
County context
Not listed in current record

Local Context

City and state context for this system

SPEARFISH is linked here to Spearfish for navigation. That relationship does not confirm the provider for a specific address; use a bill, utility portal, or official lookup source.

Linked local context

Linked communities
Spearfish
County context
Not listed in current record
State context
South Dakota

Related Explainers

Related contaminants and guides

Use these explainers with SPEARFISH's report year, source table, and official report. Links are limited to existing guide and contaminant pages.

Metals and inorganic chemicals

Fluoride

Fluoride is a regulated inorganic contaminant that can occur naturally or be adjusted by a water provider. A report result alone does not establish which source applies.

Read the Fluoride contaminant guide

Radionuclides

Gross alpha particle activity

Gross alpha is an activity measurement for alpha-emitting radioactivity. It does not identify one specific substance and is not equivalent to radium, beta/photon activity, or uranium.

Read the Gross alpha particle activity contaminant guide

How to look up your drinking water system

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View How to look up your drinking water system

How to read a water quality report

A plain-English walkthrough of Consumer Confidence Reports, including report years, detected contaminants, legal limits, violations, and source notes.

View How to read a water quality report

Corrections

Suggest a correction or newer source

If you have a newer official report, utility source, or correction, send the source link for review. This helps keep profile summaries tied to public records.

Suggest an update

Evidence

Official sources and report links

Use official federal, state, utility, or report sources before treating a page as final.

Data methodology

Review source hierarchy, missing-data handling, and record limitations.

View Data methodology

Data limitations

See why limited records, missing fields, and current notices need careful interpretation.

View Data limitations