STATE REPORT SD HEALTH VIOLATIONS: 24

South Dakota Home Safety Profiles by ZIP

392 ZIP codes · 93 water systems · UPC plumbing code

Data: ZipCheckup Home Safety Score model 4.0.0; EPA SDWIS, UCMR 5, EPA radon zones, EPA AirData, NWS, State plumbing boards, Rewiring America

ZipCheckup tracks drinking-water and home-safety data for 392 ZIP codes across South Dakota, covering 93 public water systems that serve about 694,442 people. 88 ZIP codes are mapped to at least one water system with an EPA violation on record.

392
ZIP Codes
93
Water Systems
88
ZIPs with Violations
UPC
Plumbing Code
C · 69
Avg Safety Score
72%
EPA Radon Zone 1 (county-level potential)
#32
of 50 States
19%
ZIPs Rated A or B
30%
ZIPs with Violations
C
South Dakota average: 69/100 - ranked #32 of 50 states. 4 points below the national average (73). Water systems mapped to 30% of ZIP codes have recorded violations.

State averages can hide local differences, and the lower average for South Dakota is a summary, not a finding about any single ZIP code or water system; the reports for individual ZIP codes, cities and water systems show what the average leaves out.

Score Distribution

How South Dakota's 392 ZIP codes are distributed across safety grades.

0
A
10
B
42
C
0
D
0
F
85-10070-8455-6940-540-39

Home Safety Scores by State

Loading map…
F (0-39) D (40-54) C (55-69) B (70-84) A (85+)

Model 4.0.0 inputs: EPA SDWIS, UCMR5 PFAS, EPA radon zones, annual county AQI •

Top 10 ZIP Codes by Home Safety Score in South Dakota

Highest Home Safety Scores in the state.

#ZIP CodeCityCountyScoreGrade
1 57701 Rapid CityPennington 83 B
2 57702 Rapid CityPennington 83 B
3 57718 Black HawkMeade 83 B
4 57748 HowesMeade 83 B
5 57769 PiedmontMeade 83 B
6 57785 SturgisMeade 83 B
7 57790 WallPennington 83 B
8 57626 FaithMeade 82 B
9 57706 Ellsworth AfbMeade 79 B
10 57719 Box ElderPennington 78 B

10 Lowest-Scoring ZIP Codes in South Dakota

#ZIP CodeCityCountyScoreGradeViolations
1 57401 AberdeenBrown 55 C 20
2 57703 Rapid CityPennington 62 C 10
3 57110 Sioux FallsMinnehaha 62 C 5
4 57263 South ShoreCodington 65 C 4
5 57201 WatertownCodington 65 C 4
6 57005 BrandonMinnehaha 65 C 3
7 57106 Sioux FallsMinnehaha 66 C 1
8 57068 Valley SpringsMinnehaha 66 C 2
9 57026 ElktonBrookings 66 C 1
10 57022 Dell RapidsMinnehaha 66 C 1

County Rankings

Water quality breakdown by county. 66 counties with data in South Dakota.

Loading county map…
F (0-39) D (40-54) C (55-69) B (70-84) A (85+)

County-level aggregation of measured ZIP Home Safety Scores • EPA SDWIS, UCMR 5 PFAS, EPA radon zones, EPA AirData

CountyAvg ScoreGradeZIPsBest ZIPWorst ZIP
46003 N/A N/A 3 N/A N/A
46005 N/A N/A 9 N/A N/A
46007 N/A N/A 3 N/A N/A
46009 N/A N/A 5 N/A N/A
46011 67 C 7 57002 (67) 57026 (66)
46013 66 C 15 57427 (67) 57401 (55)
46015 N/A N/A 4 N/A N/A
46017 N/A N/A 2 N/A N/A
46019 N/A N/A 4 N/A N/A
46021 N/A N/A 3 N/A N/A
46023 N/A N/A 7 N/A N/A
46025 N/A N/A 8 N/A N/A
46027 67 C 3 57010 (67) 57073 (67)
46029 65 C 5 57201 (65) 57263 (65)
46031 N/A N/A 9 N/A N/A
46033 N/A N/A 5 N/A N/A
46035 N/A N/A 2 N/A N/A
46037 N/A N/A 7 N/A N/A
46039 N/A N/A 6 N/A N/A
46041 N/A N/A 8 N/A N/A
46043 N/A N/A 5 N/A N/A
46045 N/A N/A 4 N/A N/A
46047 N/A N/A 5 N/A N/A
46049 N/A N/A 4 N/A N/A
46051 N/A N/A 9 N/A N/A
46053 N/A N/A 7 N/A N/A
46055 N/A N/A 3 N/A N/A
46057 N/A N/A 8 N/A N/A
46059 N/A N/A 5 N/A N/A
46061 N/A N/A 3 N/A N/A
46063 N/A N/A 6 N/A N/A
46065 67 C 3 57501 (67) 57536 (67)
46067 N/A N/A 7 N/A N/A
46069 N/A N/A 3 N/A N/A
46071 N/A N/A 5 N/A N/A
46073 N/A N/A 3 N/A N/A
46075 N/A N/A 3 N/A N/A
46077 N/A N/A 5 N/A N/A
46079 N/A N/A 7 N/A N/A
46081 N/A N/A 7 N/A N/A
46083 N/A N/A 9 N/A N/A
46085 N/A N/A 6 N/A N/A
46087 N/A N/A 7 N/A N/A
46089 N/A N/A 3 N/A N/A
46091 N/A N/A 7 N/A N/A
46093 82 B 12 57718 (83) 57706 (79)
46095 N/A N/A 3 N/A N/A
46097 N/A N/A 4 N/A N/A
46099 66 C 30 57003 (67) 57110 (62)
46101 N/A N/A 5 N/A N/A
46102 N/A N/A 7 N/A N/A
46103 76 B 13 57701 (83) 57703 (62)
46105 N/A N/A 5 N/A N/A
46107 N/A N/A 4 N/A N/A
46109 N/A N/A 9 N/A N/A
46111 N/A N/A 3 N/A N/A
46115 N/A N/A 9 N/A N/A
46117 N/A N/A 2 N/A N/A
46119 N/A N/A 2 N/A N/A
46121 N/A N/A 5 N/A N/A
46123 N/A N/A 5 N/A N/A
46125 N/A N/A 6 N/A N/A
46127 N/A N/A 4 N/A N/A
46129 N/A N/A 5 N/A N/A
46135 N/A N/A 8 N/A N/A
46137 N/A N/A 2 N/A N/A

Most Common Contaminants in South Dakota

Contaminant / RuleCategoryZIPs AffectedViolationsHealth Risk
Revised Total Coliform Rule Microbiological 46 57 No
Consumer Confidence Report Rule Reporting 45 49 Yes
Lead Inorganic 24 24 No
Gross Alpha Radionuclides 17 29 Yes
Gross Beta Radionuclides 17 26 Yes
Combined Radium Radionuclides 14 14 No
Total Trihalomethanes (TTHM) Disinfection Byproducts 6 6 No
Haloacetic Acids (HAA5) Disinfection Byproducts 6 6 No

Overview

We track multi-source home safety signals for 392 ZIP records across South Dakota. Home Safety Score model 4.0.0 is published for 52 scored records; missing required evidence suppresses the score.

The EPA snapshots used for this build directly map water systems to 293 ZIP records, covering 93 community water systems that serve approximately 694,442 people.

88 of 293 ZIP codes with a reported violation count in the available EPA record (30%) have recorded EPA violations. 24 health-based violations appear in the available health breakdown.

Plumbing Regulations

South Dakota follows the Uniform Plumbing Code (2018 edition).

  • Plumbing code: UPC (2018)
  • Homeowner DIY: Licensed plumber required
  • Water heater permit: Required
  • Annual backflow test: Required

Full South Dakota regulations →

Areas with Most Violations

ZIP Code City Home Safety Grade Violations Health-Based System
57401 Aberdeen C 20 10 Aberdeen
57719 Box Elder B 12 9 Box Elder
57703 Rapid City C 10 9 Rapid Valley Sanitary District
57706 Ellsworth Afb B 9 9 Ellsworth Afb
57783 Spearfish — 7 1 Spearfish
57625 Eagle Butte — 6 1 Eagle Butte
57110 Sioux Falls C 5 2 Sioux Falls
57201 Watertown C 4 0 Watertown Municipal Utilities
57263 South Shore C 4 0 Sioux Rural Water System
57626 Faith B 4 0 Tri-county Rural Water System

Areas with No Violations

ZIP Code City Home Safety Grade System Population
57002 Aurora C Brookings-deuel Rural Water System 6,200
57003 Baltic C Minnehaha Community Water Corporation 13,435
57007 Brookings — Brookings Municipal Utilities 23,377
57010 Burbank C Clay Rural Water System 4,780
57012 Canistota — Tm Rural Water District 4,250
57018 Colton C Minnehaha Community Water Corporation 13,435
57020 Crooks C Minnehaha Community Water Corporation 13,435
57021 Davis — Tm Rural Water District 4,250
57025 Elk Point — Clay Rural Water System 4,780
57029 Freeman — By Water District 13,320

Home Safety Score

Average Home Safety Score for South Dakota: C (69/100) across 52 scored of 392 tracked ZIP records.

Model 4.0.0 uses the canonical components water-compliance, pfas-mcl-screen, radon-zone, annual-aqi across 3 required domains. The sections below provide additional context and do not change that score. Missing required evidence suppresses the score, and a favorable result is not a property-level safety certification.

Lead & Copper

  • Average of reported 90th-percentile lead results: 0.0031 mg/L (EPA action level: 0.015 mg/L)
  • 0 of 293 ZIP codes with known status exceed the EPA lead action level

Radon Risk

  • High risk (Zone 1): 282 ZIP codes (72%)
  • Moderate risk (Zone 2): 107 ZIP codes
  • Low risk (Zone 3): 0 ZIP codes

ZIP Code Reports for South Dakota

Largest Communities

ZIP Code City Population Safety Grade Violations
57110 Sioux Falls 247,460 C 5
57033 Hartford 243,998 C 0
57106 Sioux Falls 243,243 C 1
57005 Brandon 242,190 C 3
57032 Harrisburg 237,974 — 3
57108 Sioux Falls 237,974 — 3
57020 Crooks 236,352 C 0
57103 Sioux Falls 230,127 — 1
57055 Renner 229,897 C 0
57104 Sioux Falls 229,897 C 0
57107 Sioux Falls 229,897 C 0
57105 Sioux Falls 216,462 C 0
57117 Sioux Falls 216,462 C 0
57197 Sioux Falls 216,462 — 0
57719 Box Elder 110,186 B 12
57703 Rapid City 98,856 C 10
57701 Rapid City 88,588 B 2
57702 Rapid City 83,202 B 2
57718 Black Hawk 77,646 B 2
57401 Aberdeen 54,903 C 20

Lowest Published Home Safety Scores

ZIP Code City Score Grade Violations
57401 Aberdeen 55 C 20
57110 Sioux Falls 62 C 5
57703 Rapid City 62 C 10
57005 Brandon 65 C 3
57201 Watertown 65 C 4

Highest Published Home Safety Scores

ZIP Code City Score Grade Violations
57701 Rapid City 83 B 2
57702 Rapid City 83 B 2
57718 Black Hawk 83 B 2
57748 Howes 83 B 2
57769 Piedmont 83 B 2

All 392 ZIP Codes in South Dakota

Data Sources

Reporting periods vary by source. Missing data is shown as unavailable, not as zero.

Largest water systems in South Dakota

The 12 largest community water systems in South Dakota, out of 93 in our data.

Show all 12 water systems

Systems with the most violations in South Dakota

12 systems in South Dakota with the most recorded EPA violations.

Frequently Asked Questions

Is the water safe to drink in South Dakota?

South Dakota has 93 community water systems serving 694,442 people across 392 ZIP codes. There are 64 recorded violations among these water systems, including 24 health-based. 88 of 392 ZIP codes are mapped to at least one water system with a recorded violation.

What plumbing code does South Dakota follow?

South Dakota's listed plumbing code type is UPC as of our last review; local jurisdictions may adopt or amend codes. Plumbing work may require a licensed plumber; check state exemptions and local requirements.

What is the radon risk in South Dakota?

72% of ZIP codes in South Dakota are mapped to counties classified as EPA Radon Zone 1 (highest county-level radon potential).

How to cite this page

APA ZipCheckup. (2026). South Dakota Home Safety Profiles by ZIP. https://zipcheckup.com/states/south-dakota/
BibTeX 
@misc{zipcheckup-states-south-dakota,
  author = {{ZipCheckup}},
  title  = {{South Dakota Home Safety Profiles by ZIP}},
  year   = {2026},
  url    = {https://zipcheckup.com/states/south-dakota/}
}

Page version: October 2026.

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