PlainEnviro

Rapid City Water Quality

South Dakota

Health Violations

The tap water in Rapid City, South Dakota is served by 44 EPA-regulated water systems covering approximately 92,904 people. 50 health-based violations are on record, most recently for 0400 in 2025. Data source: EPA Safe Drinking Water Information System.

44
Water Systems
92,904
Population Served
50
Total Violations
50
Health-Based Violations

Drinking water in Rapid City, South Dakota is delivered through 44 EPA-regulated community water systems serving an estimated 92,904 people. Each system is tracked in the EPA Safe Drinking Water Information System (SDWIS) under the Safe Drinking Water Act, which requires testing for regulated contaminants, consumer notification of violations, and publication of an annual Consumer Confidence Report.

The SDWIS record for Rapid City shows 50 total violations across all 44 systems, of which 50 are health-based, meaning either a Maximum Contaminant Level (MCL) was exceeded or a required treatment technique was not followed. Contaminants cited in health-based violations include 0400, 4010, 8000, 0700, 3100. 7 TRI-reporting industrial facilities are also located within the city limits.

A past EPA violation does not mean the water is currently unsafe, utilities are required to notify customers and remediate under state primacy oversight. For current water-quality status and treatment practices, review your local utility's most recent Consumer Confidence Report or contact the South Dakota drinking water program. All records above reflect federal EPA SDWIS data and are not independently verified against state databases.

Community Water Systems

System Name Pop. Served Violations Status
RAPID CITY 72,009 0 Clean
RAPID VALLEY SANITARY DISTRICT 11,408 0 Clean
COLONIAL PINE HILLS SANITARY DISTRIC 1,200 0 Clean
CHAPEL LANE WATER COMPANY 1,200 1 Health
WONDERLAND HOMES 750 1 Health
SUN VALLEY DEVELOPMENT 650 1 Health
HISEGA MEADOWS WATER INC 491 0 Clean
HART RANCH 438 0 Clean
PINE GROVE 425 0 Clean
SOUTH CANYON COUNTRY ESTATES 420 0 Clean
THE RANCH AT BLACK GAP 375 1 Health
PRAIRIE ACRES LLC 350 2 Health
STAGEBARN SANITARY DISTRICT 295 1 Health
PRAIRIE ACRES NORTH 288 5 Health
CARRIAGE HILLS 267 1 Health
HAPPY HOLIDAY RV RESORT 264 1 Health
BOULDER PARK WATER USERS ASSOCIATION 200 1 Health
PRAIRIE ACRES SOUTH 170 5 Health
STRATO RIM ESTATES WATER COMPANY 170 0 Clean
B & J MOBILE HOME PARK 135 1 Health
MIDLAND HEIGHTS 130 1 Health
EAST RIDGE ACRES 118 1 Health
ELK CREEK VILLAGE 110 1 Health
PONDEROSA MOBILE HOME RANCH 100 2 Health
PONDEROSA RIDGE 90 1 Health
SPEARFISH MEADOWS 87 1 Health
ROCK RIDGE COURT 74 1 Health
SIPHON HILL WATER ASSOCIATION 68 4 Health
ELK VALLEY RANCHETTES 62 1 Health
ELK CREEK VALLEY VIEW ASSOC 52 1 Health
WEST NIKE SUBDIVISION 50 0 Clean
GOLDEN HILLS HOMES 47 1 Health
WHISPERING PINES WATER ASSOCIATION 45 0 Clean
BOXELDER HIGH COUNTRY ASSOCIATION 45 0 Clean
CEDAR GULCH 1 45 5 Health
HIGHLAND HILLS 38 3 Health
HAPPY HOLIDAY WATER ASSOCIATION 35 1 Health
RIMROCK RIDGE WATER ASSOCIATION 35 0 Clean
RIMROCK HEIGHTS HOMEOWNERS ASSOCIATI 35 0 Clean
PONDEROSA PARK 31 0 Clean
HIDDEN VALLEY WATER ASSOCIATION INC 27 2 Health
DARLINGTON ESTATES 25 1 Health
PONDEROSA WATER COMPANY 25 1 Health
PINEVIEW WATER ASSOCIATION 25 1 Health

Does this city have health-based water violations?

Health-based violations indicate contaminant levels that exceeded EPA maximum contaminant levels (MCLs). This does not necessarily mean water is currently unsafe.

Contaminant Begin Date
0400 2025-07-07
4010 2025-07-01
0400 2025-02-01
0400 2025-02-01
0400 2024-05-21
8000 2023-07-01
8000 2023-07-01
8000 2023-07-01
0700 2019-11-24
0700 2019-10-08
0700 2019-10-08
0700 2019-10-08
0700 2019-10-08
0400 2019-06-10
0700 2018-11-20
0700 2018-11-20
0700 2018-10-23
0700 2017-11-30
0700 2017-11-30
0400 2017-10-01
8000 2017-04-13
0700 2016-10-01
0700 2016-04-01
0400 2016-02-01
3100 2015-12-01
0400 2015-02-01
0400 2015-02-01
0400 2015-02-01
0400 2015-02-01
0400 2015-02-01
0400 2015-02-01
0400 2015-02-01
0400 2015-02-01
0400 2015-02-01
0400 2015-02-01
0400 2015-02-01
0400 2015-02-01
0400 2015-02-01
0400 2015-02-01
0400 2015-02-01
0400 2015-02-01
0400 2015-02-01
0400 2015-02-01
0400 2011-03-08
0400 2011-03-08
0700 2010-08-03
0400 2010-02-01
0400 2009-01-01
0400 2009-01-01
0400 2005-02-01

TRI Facilities in Rapid City

Facility Total Releases
Pete Lien & Sons Inc 193.6K lbs
Gcc Dacotah 130.1K lbs
Midwest Manufacturing Inc DBA Dakota Panel 11.8K lbs
Truenorth Steel - Rapid City 79 lbs
Forterra Concrete Products - Rapid City 0 lbs
Forest Products Distributors Inc 0 lbs
Hubbard Feeds Inc 0 lbs

Frequently Asked Questions

Is Rapid City, South Dakota water safe to drink? ▼
Rapid City is served by 44 EPA-regulated water systems covering approximately 92,904 people. 50 health-based violations have been recorded. A past violation does not necessarily mean water is currently unsafe, systems are required to notify customers and resolve issues. Contact your local water utility for current status.
How many water violations does Rapid City have? ▼
Rapid City water systems have a total of 50 violations on record in the EPA Safe Drinking Water Information System, of which 50 are health-based (MCL exceedances). The remaining violations are monitoring or reporting violations.
What contaminants were found in Rapid City water? ▼
Health-based violations for Rapid City water systems include the following contaminants: 0400, 4010, 8000, 0700, 3100. Source: EPA Safe Drinking Water Information System (SDWIS).
How many water systems serve Rapid City? ▼
44 EPA-regulated community water systems serve Rapid City, South Dakota, collectively covering approximately 92,904 people. Data is from the EPA Safe Drinking Water Information System (SDWIS).
Where does Rapid City get its drinking water? ▼
Rapid City's water supply comes from 44 EPA-regulated community water systems. Source type data is not available for all systems. For detailed supply information, contact your local water utility. Source: EPA SDWIS.
Are there pollution sources near Rapid City? ▼
Yes, 7 EPA Toxic Release Inventory (TRI) facilities are registered in Rapid City, South Dakota, reporting a combined 335.5K lbs of toxic chemical releases. TRI data reflects self-reported emissions; it does not measure exposure or health effects. Source: EPA TRI.

Related Guides

Understanding Water Quality Violations
What MCL violations mean and how to read EPA data
How to Check Environmental Quality
Step-by-step guide to checking your local environment
Understanding EPA Data
How EPA collects and publishes environmental data

About This Data

Water system data comes from the EPA's Safe Drinking Water Information System (SDWIS). Violations are reported by state agencies to EPA and include both health-based (MCL exceedances) and monitoring/reporting violations.

A reported violation does not necessarily mean water is currently unsafe to drink. Many violations are resolved quickly, and public water systems are required to notify customers of significant issues. For current water quality, contact your local water utility.

TRI facility data comes from the EPA Toxic Release Inventory. Facilities shown are those that self-report to the TRI program. PlainEnviro presents this data without advocacy framing.

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

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Data sourced from U.S. EPA environmental datasets. See our methodology for details. Retrieved and formatted by PlainEnviro Editorial