R

Rapid City, SD

—no score

Contamination score

Higher = more contaminated vs. other cities.

⚠️8 health-based violations on record.
0
Water sources
20
Violations
0
Pollution sources
0
Self-reported
0
Lawsuits

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Public water systems

Cedar Gulch 1

PWSID:
SD4602301
Source:
Ground water
Serves:
45 people

Rimrock Heights Homeowners Associati

PWSID:
SD4602356
Source:
Ground water
Serves:
35 people

Colonial Pine Hills Sanitary Distric

PWSID:
SD4600263
Source:
Ground water
Serves:
1,200 people

B & J Mobile Home Park

PWSID:
SD4602122
Source:
Ground water
Serves:
135 people

Ponderosa Water Company

PWSID:
SD4602134
Source:
Ground water
Serves:
25 people

Pineview Water Association

PWSID:
SD4602153
Source:
Ground water
Serves:
25 people

Ponderosa Park

PWSID:
SD4600405
Source:
Ground water
Serves:
50 people

Rapid City

PWSID:
SD4600406
Source:
Surface water
Serves:
72,009 people

Elk Valley Ranchettes

PWSID:
SD4602189
Source:
Ground water
Serves:
62 people

Prairie Acres North

PWSID:
SD4600884
Source:
Ground water
Serves:
288 people

Rimrock Ridge Water Association

PWSID:
SD4602084
Source:
Ground water
Serves:
35 people

Pine Grove

PWSID:
SD4600948
Source:
Ground water
Serves:
425 people

Ponderosa Ridge

PWSID:
SD4600863
Source:
Ground water
Serves:
98 people

Prairie Acres Llc

PWSID:
SD4600014
Source:
Ground water
Serves:
350 people

Strato Rim Estates Water Company

PWSID:
SD4602191
Source:
Ground water
Serves:
170 people

Hidden Valley Water Association Inc

PWSID:
SD4600269
Source:
Ground water
Serves:
27 people

Hisega Meadows Water Inc

PWSID:
SD4600271
Source:
Surface water
Serves:
491 people

South Canyon Country Estates

PWSID:
SD4600627
Source:
Ground water
Serves:
420 people

Stagebarn Sanitary District

PWSID:
SD4602159
Source:
Ground water
Serves:
295 people

Prairie Acres South

PWSID:
SD4600428
Source:
Ground water
Serves:
170 people

Hart Ranch

PWSID:
SD4600910
Source:
Ground water
Serves:
438 people

Elk Creek Village

PWSID:
SD4602237
Source:
Ground water
Serves:
110 people

Elk Creek Valley View Assoc

PWSID:
SD4602363
Source:
Ground water
Serves:
52 people

Boxelder High Country Association

PWSID:
SD4602276
Source:
Ground water
Serves:
45 people

Sheridan Lake Highlands, Inc.

PWSID:
SD4602285
Source:
Ground water
Serves:
85 people

Happy Holiday Water Association

PWSID:
SD4600420
Source:
Ground water
Serves:
35 people

Rapid Valley Sanitary District

PWSID:
SD4600274
Source:
Surface water
Serves:
11,408 people

The Ranch At Black Gap

PWSID:
SD4602203
Source:
Ground water
Serves:
375 people

West Nike Subdivision

PWSID:
SD4602260
Source:
Ground water
Serves:
50 people

Golden Hills Homes

PWSID:
SD4602213
Source:
Ground water
Serves:
47 people

Rapid City Mobile Home Park

PWSID:
SD4600257
Source:
Ground water
Serves:
170 people

Ponderosa Mobile Home Ranch

PWSID:
SD4600260
Source:
Ground water
Serves:
150 people

Chapel Lane Water Company

PWSID:
SD4600264
Source:
Ground water
Serves:
1,200 people

Carriage Hills

PWSID:
SD4600265
Source:
Ground water
Serves:
267 people

Whispering Pines Water Association

PWSID:
SD4600268
Source:
Ground water
Serves:
48 people

Wonderland Homes

PWSID:
SD4600421
Source:
Ground water
Serves:
750 people

Darlington Estates

PWSID:
SD4600403
Source:
Ground water
Serves:
25 people

Highland Hills

PWSID:
SD4600050
Source:
Ground water
Serves:
38 people

Siphon Hill Water Association

PWSID:
SD4600272
Source:
Ground water
Serves:
68 people

Sun Valley Development

PWSID:
SD4602270
Source:
Ground water
Serves:
650 people

East Ridge Acres

PWSID:
SD4601000
Source:
Ground water
Serves:
118 people

Midland Heights

PWSID:
SD4600515
Source:
Ground water
Serves:
130 people

Boulder Park Water Users Association

PWSID:
SD4602005
Source:
Ground water
Serves:
200 people

Rock Ridge Court

PWSID:
SD4602209
Source:
Ground water
Serves:
74 people

Happy Holiday Rv Resort

PWSID:
SD4600669
Source:
Ground water
Serves:
264 people

EPA & DEP violations

City-wide

20 violations

  • Combined Radium (-226 and -228) — MCL violation

    high severityHealth-basedArchived

    Combined Radium (-226 and -228) MCL violation (Archived).

    EPA SDWIS · MCL · Began Jan 1, 2026 · 7 months ago · Source ↗

  • Gross Alpha, Excl. Radon and U — MCL violation

    high severityHealth-basedArchived

    Gross Alpha, Excl. Radon and U MCL violation (Archived).

    EPA SDWIS · MCL · Began Jan 1, 2026 · 7 months ago · Source ↗

  • Revised Total Coliform Rule — MON violation

    medium severityArchived

    Revised Total Coliform Rule MON violation (Archived).

    EPA SDWIS · MON · Began Jan 1, 2026 · 7 months ago · Source ↗

  • Stage 1 Disinfectants and Disinfection Byproducts Rule — TT violation

    high severityHealth-basedUnaddressed

    Stage 1 Disinfectants and Disinfection Byproducts Rule TT violation (Unaddressed).

    EPA SDWIS · TT · Began Nov 12, 2025 · 8 months ago · Source ↗

  • Combined Radium (-226 and -228) — MCL violation

    high severityHealth-basedArchived

    Combined Radium (-226 and -228) MCL violation (Archived).

    EPA SDWIS · MCL · Began Oct 1, 2025 · 10 months ago · Source ↗

  • Stage 1 Disinfectants and Disinfection Byproducts Rule — TT violation

    high severityHealth-basedUnaddressed

    Stage 1 Disinfectants and Disinfection Byproducts Rule TT violation (Unaddressed).

    EPA SDWIS · TT · Began Jul 7, 2025 · 1 year ago · Source ↗

  • Combined Radium (-226 and -228) — MCL violation

    high severityHealth-basedArchived

    Combined Radium (-226 and -228) MCL violation (Archived).

    EPA SDWIS · MCL · Began Jul 1, 2025 · 1 year ago · Source ↗

  • Revised Total Coliform Rule — MON violation

    medium severityResolved

    Revised Total Coliform Rule MON violation (Resolved).

    EPA SDWIS · MON · Began Jul 1, 2025 · 1 year ago · Source ↗

  • Stage 1 Disinfectants and Disinfection Byproducts Rule — TT violation

    high severityHealth-basedResolved

    Stage 1 Disinfectants and Disinfection Byproducts Rule TT violation (Resolved).

    EPA SDWIS · TT · Began Feb 1, 2025 · 1 year ago · Source ↗

  • Revised Total Coliform Rule — MON violation

    medium severityResolved

    Revised Total Coliform Rule MON violation (Resolved).

    EPA SDWIS · MON · Began Nov 1, 2024 · 1 year ago · Source ↗

  • Revised Total Coliform Rule — MON violation

    medium severityResolved

    Revised Total Coliform Rule MON violation (Resolved).

    EPA SDWIS · MON · Began Oct 1, 2024 · 1 year ago · Source ↗

  • Revised Total Coliform Rule — MON violation

    medium severityResolved

    Revised Total Coliform Rule MON violation (Resolved).

    EPA SDWIS · MON · Began Oct 1, 2024 · 1 year ago · Source ↗

  • Revised Total Coliform Rule — MON violation

    medium severityResolved

    Revised Total Coliform Rule MON violation (Resolved).

    EPA SDWIS · MON · Began Aug 1, 2024 · 2 years ago · Source ↗

  • Consumer Confidence Rule — Other violation

    medium severityUnaddressed

    Consumer Confidence Rule Other violation (Unaddressed).

    EPA SDWIS · Other · Began Jul 1, 2024 · 2 years ago · Source ↗

  • Stage 1 Disinfectants and Disinfection Byproducts Rule — TT violation

    high severityHealth-basedResolved

    Stage 1 Disinfectants and Disinfection Byproducts Rule TT violation (Resolved).

    EPA SDWIS · TT · Began May 21, 2024 · 2 years ago · Source ↗

  • Public Notice — Other violation

    medium severityResolved

    Public Notice Other violation (Resolved).

    EPA SDWIS · Other · Began Mar 9, 2024 · 2 years ago · Source ↗

  • Public Notice — Other violation

    medium severityResolved

    Public Notice Other violation (Resolved).

    EPA SDWIS · Other · Began Mar 9, 2024 · 2 years ago · Source ↗

  • Revised Total Coliform Rule — MON violation

    medium severityResolved

    Revised Total Coliform Rule MON violation (Resolved).

    EPA SDWIS · MON · Began Mar 1, 2024 · 2 years ago · Source ↗

  • Revised Total Coliform Rule — MON violation

    medium severityResolved

    Revised Total Coliform Rule MON violation (Resolved).

    EPA SDWIS · MON · Began Feb 1, 2024 · 2 years ago · Source ↗

  • Vinyl chloride — MR violation

    medium severityResolved

    Vinyl chloride MR violation (Resolved).

    EPA SDWIS · MR · Began Jan 1, 2024 · 2 years ago · Source ↗

Water-related lawsuits

No lawsuits on record.

In the news & sources

No coverage linked yet.