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Community Water System · PWS SD4600875

Spearfish Meadows

Rapid City, South Dakota 57701 - drinking water served from groundwater sources to 87 people, tracked in EPA SDWIS and UCMR5.

87
People served
386
EPA violations
31
Health-based
Untested
UCMR5 result

The verdict

EPA records 386 drinking-water violations at Spearfish Meadows, 8% of them health-based - above the South Dakota per-system average.

386
Total EPA violations on record
8%
Health-based (MCL / treatment failure)
87
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Spearfish Meadows

Spearfish Meadows is a private-owned community water system that delivers drinking water to 87 residents in Rapid City, South Dakota (Lawrence County) through 30 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 386 total violations for this system , of which 31 (8%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 292 monitoring and reporting violations are on file. The most recent violation on record dates to 2016.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 35 violations (MR). This system has not yet been sampled under EPA's UCMR5 PFAS monitoring program, so no PFAS detection data is available here.

Across South Dakota, EPA tracks 654 public water systems serving 915,901 people, with 56,254 cumulative violations and 8,399 health-based violations on record. About 92% of systems in the state carry at least one violation, and state-wide the average per system is 86 violations. Statewide, 42 of 49 UCMR5-tested systems have reported PFAS detections (85.7%).

Spearfish Meadows's 386 violations sit above the South Dakota average.

All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.

Population Served
87
Total Violations
386
Health-Based Violations
31
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
30
County
Lawrence
School/Daycare
No
MCL Violations
29
Monitoring Violations
292
Treatment Tech Violations
2

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 35 2002
Coliform (TCR) MCL 29 1996
Lead and Copper Rule MR 14 1998
Heptachlor MR 5 1996
Heptachlor epoxide MR 5 1996
Benzo(a)pyrene MR 5 1996
Methoxychlor MR 5 1996
Di(2-ethylhexyl) phthalate MR 5 1996
Hexachlorocyclopentadiene MR 5 1996
Endrin MR 5 1996
HEXACHLOROBENZENE MR 5 1996
BHC-GAMMA MR 5 1996
Chlordane MR 5 1996
Toxaphene MR 5 1996
Simazine MR 5 1996
Aldicarb sulfone MR 5 1996
Aldicarb sulfoxide MR 5 1996
OXAMYL MR 5 1996
Dalapon MR 5 1996
2,4,5-TP MR 5 1996
Pentachlorophenol MR 5 1996
Picloram MR 5 1996
2,4-D MR 5 1996
ETHYLENE DIBROMIDE MR 5 1996
Endothall MR 5 1996
Dinoseb MR 5 1996
Carbofuran MR 5 1996
Aldicarb MR 5 1996
Diquat MR 5 1996
LASSO MR 5 1996

Verify This Water System

The figures above are aggregated from EPA's public databases. To verify the underlying records, or to file a complaint, request a Consumer Confidence Report, or check current monitoring status, go directly to the federal and state regulators that enforce the Safe Drinking Water Act for Spearfish Meadows.

Federal Source of Truth

EPA SDWIS, Federal Reports

EPA's Safe Drinking Water Information System (SDWIS) holds the federal compliance record for every regulated public water system. Open the system-level report by PWS ID:

View PWS ID SD4600875 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

South Dakota Drinking Water Authority

South Dakota's primacy agency administers the Safe Drinking Water Act locally. Search EPA SDWIS for the current state contact, or use the state's public health or environment department portal.

Find SD regulator via EPA SDWIS

Violation Timeline

Each row links to the EPA SDWIS public record for verification. Cross-reference the contaminant code on EPA's federal report to see violation dates, return-to-compliance status, and enforcement actions.

Year (latest) Contaminant Category Count EPA Record
2016 Groundwater Rule TT 2 SDWIS / SD4600875 / 0700
2015 E. COLI MR 2 SDWIS / SD4600875 / 3014
2002 Coliform (TCR) MR 35 SDWIS / SD4600875 / 3100
2000 Aldicarb sulfoxide Other 1 SDWIS / SD4600875 / 2043
2000 Di(2-ethylhexyl) phthalate Other 1 SDWIS / SD4600875 / 2039
2000 Di(2-ethylhexyl) adipate Other 1 SDWIS / SD4600875 / 2035
2000 Chlordane Other 1 SDWIS / SD4600875 / 2959
2000 Butachlor Other 1 SDWIS / SD4600875 / 2076
2000 Glyphosate Other 1 SDWIS / SD4600875 / 2034
2000 Benzo(a)pyrene Other 1 SDWIS / SD4600875 / 2306
2000 Aldicarb sulfone Other 1 SDWIS / SD4600875 / 2044
2000 Atrazine Other 1 SDWIS / SD4600875 / 2050
2000 Aldrin Other 1 SDWIS / SD4600875 / 2356
2000 OXAMYL Other 1 SDWIS / SD4600875 / 2036
2000 Aldicarb Other 1 SDWIS / SD4600875 / 2047

How Spearfish Meadows Compares

Cross-reference this system's record against state averages and the federal MCL framework for context.

Metric Spearfish Meadows South Dakota avg Federal benchmark
Total violations 386 86 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 31 12.8 Indicates a contaminant exceeded a federal MCL
PFAS detection None 85.7% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 87 1,400 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 654 regulated public water systems in South Dakota.

Federal MCL reference, Safe Drinking Water Act thresholds ▼
Contaminant Federal MCL / Action Level Note
Lead 0 mg/L (Action Level: 0.015 mg/L) Lead and Copper Rule treatment technique
Arsenic 0.010 mg/L (10 ppb) Health-based MCL since 2006
Total Coliform Treatment technique (RTCR) Indicator organism, monitoring trigger
PFOA / PFOS (PFAS) 4.0 ppt each (final 2024 rule) Compliance deadline 2029 (EPA proposed extending to 2031, not yet final as of May 2026)
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is Spearfish Meadows water safe to drink? ▼
Spearfish Meadows (PWS ID: SD4600875) has 386 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 87 people using Groundwater sources.
How many people does Spearfish Meadows serve? ▼
Spearfish Meadows serves 87 people in Rapid City, South Dakota. It is a Private-owned system using Groundwater water sources with 30 service connections.
What type of violations does Spearfish Meadows have? ▼
Spearfish Meadows has 386 total violations: 31 health-based violations (MCL exceedances or treatment failures), 292 monitoring/reporting violations, and 2 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Spearfish Meadows water? ▼
No PFAS testing data is available for Spearfish Meadows under the EPA's UCMR5 monitoring program.
What water source does Spearfish Meadows use? ▼
Spearfish Meadows uses Groundwater as its primary water source. It is classified as a Community Water System (CWS), serving residential populations year-round.
Where does this data come from? ▼
All data comes from the EPA Safe Drinking Water Information System (SDWIS) and the UCMR5 PFAS monitoring program. SDWIS tracks compliance for all public water systems regulated under the Safe Drinking Water Act.
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025. This data is provided for informational purposes only.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater Editorial

Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. This system's figures are rendered directly from EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.