TapWaterMap

SD / Rapid City

SD · Tap water records

Rapid City tap water, in plain English

Here is what the EPA's own data shows about tap water in Rapid City. According to EPA SDWIS data retrieved June 2026, Rapid City is served by 44 active community water systems, together reported to serve about 92,957 people.

As of June 2026, EPA records show 394 violations across the community water system(s) serving Rapid City, going back to the earliest EPA record. 54 of these are classified by the EPA as health-based (a contaminant recorded above the limit the EPA tracks); the rest are monitoring or reporting violations. Each is listed by system below, with its status.

What the EPA has on record, by system

Rapid City

72,009 served · surface water · PWSID SD4600406

As of June 2026, EPA records show no reported violations for this system in the period covered. This is not a guarantee about every substance, or about the water inside your home's plumbing.

Rapid Valley Sanitary District

11,408 served · surface water · PWSID SD4600274

As of June 2026, EPA records show no reported violations for this system in the period covered. This is not a guarantee about every substance, or about the water inside your home's plumbing.

Colonial Pine Hills Sanitary Distric

1,200 served · groundwater · PWSID SD4600263

As of June 2026, EPA records show no reported violations for this system in the period covered. This is not a guarantee about every substance, or about the water inside your home's plumbing.

Chapel Lane Water Company

1,200 served · groundwater · PWSID SD4600264

Wonderland Homes

750 served · groundwater · PWSID SD4600421

Sun Valley Development

650 served · groundwater · PWSID SD4602270

Hisega Meadows Water Inc

491 served · surface water · PWSID SD4600271

Hart Ranch

438 served · groundwater · PWSID SD4600910

Pine Grove

425 served · groundwater · PWSID SD4600948

As of June 2026, EPA records show no reported violations for this system in the period covered. This is not a guarantee about every substance, or about the water inside your home's plumbing.

South Canyon Country Estates

420 served · groundwater · PWSID SD4600627

As of June 2026, EPA records show no reported violations for this system in the period covered. This is not a guarantee about every substance, or about the water inside your home's plumbing.

The Ranch At Black Gap

375 served · groundwater · PWSID SD4602203

Prairie Acres Llc

350 served · groundwater · PWSID SD4600014

Stagebarn Sanitary District

295 served · groundwater · PWSID SD4602159

Prairie Acres North

288 served · groundwater · PWSID SD4600884

Carriage Hills

267 served · groundwater · PWSID SD4600265

Happy Holiday Rv Resort

264 served · groundwater · PWSID SD4600669

Boulder Park Water Users Association

200 served · groundwater · PWSID SD4602005

Prairie Acres South

170 served · groundwater · PWSID SD4600428

Strato Rim Estates Water Company

170 served · groundwater · PWSID SD4602191

Ponderosa Mobile Home Ranch

150 served · groundwater · PWSID SD4600260

B & J Mobile Home Park

135 served · groundwater · PWSID SD4602122

Midland Heights

130 served · groundwater · PWSID SD4600515

East Ridge Acres

118 served · groundwater · PWSID SD4601000

Elk Creek Village

110 served · groundwater · PWSID SD4602237

Ponderosa Ridge

90 served · groundwater · PWSID SD4600863

Spearfish Meadows

87 served · groundwater · PWSID SD4600875

Rock Ridge Court

74 served · groundwater · PWSID SD4602209

Siphon Hill Water Association

68 served · groundwater · PWSID SD4600272

Elk Valley Ranchettes

62 served · groundwater · PWSID SD4602189

Elk Creek Valley View Assoc

52 served · groundwater · PWSID SD4602363

West Nike Subdivision

50 served · groundwater · PWSID SD4602260

As of June 2026, EPA records show no reported violations for this system in the period covered. This is not a guarantee about every substance, or about the water inside your home's plumbing.

Whispering Pines Water Association

48 served · groundwater · PWSID SD4600268

As of June 2026, EPA records show no reported violations for this system in the period covered. This is not a guarantee about every substance, or about the water inside your home's plumbing.

Golden Hills Homes

47 served · groundwater · PWSID SD4602213

Boxelder High Country Association

45 served · groundwater · PWSID SD4602276

Cedar Gulch 1

45 served · groundwater · PWSID SD4602301

Highland Hills

38 served · groundwater · PWSID SD4600050

Happy Holiday Water Association

35 served · groundwater · PWSID SD4600420

Rimrock Ridge Water Association

35 served · groundwater · PWSID SD4602084

As of June 2026, EPA records show no reported violations for this system in the period covered. This is not a guarantee about every substance, or about the water inside your home's plumbing.

Rimrock Heights Homeowners Associati

35 served · groundwater · PWSID SD4602356

Ponderosa Park

31 served · groundwater · PWSID SD4600405

Hidden Valley Water Association Inc

27 served · groundwater · PWSID SD4600269

Darlington Estates

25 served · groundwater · PWSID SD4600403

Ponderosa Water Company

25 served · groundwater · PWSID SD4602134

Pineview Water Association

25 served · groundwater · PWSID SD4602153

What this means

A health-based violation means a contaminant was recorded above the limit the EPA tracks for it. A monitoring or reporting violation means a required test or report was late or missed — not that a contaminant was measured above a limit. “Returned to compliance” means the EPA recorded the issue as resolved.

This page summarizes the EPA's own records and does not assess whether your water is safe to drink. For the most current details, you can verify every record directly with the EPA, and contact your water system with questions.

Source: U.S. EPA Envirofacts SDWIS, retrieved June 2026. Records cover the EPA's full reporting history for these systems. Verify at EPA ECHO.