CITY REPORT SD HEALTH VIOLATIONS: 2

Sioux Falls, SD: 2 Health Violations - Home Safety 66/100

20 ZIP codes · 9 water systems · Updated

ZipCheckup grade for Sioux Falls: C.

A mixed picture - some signals here are worth your attention.

Sioux Falls lands in the middle of the grade scale in SD; EPA records can differ from one service area to the next.

How Sioux Falls Compares

Sioux Falls66/100
South Dakota avg69/100
National avg73/100

Data: EPA SDWIS

20
ZIP Codes
9
Water Systems
4
ZIPs Linked to Systems with Violations
C · 66
Avg Safety Score
Zone 1
County Radon Potential (High)
$251K
Median Home Value
$525
Est. Remediation (0.2% of home value)

Water Quality Map: Sioux Falls, SD

Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.

A B C D F

Score Distribution

How ZIP codes in Sioux Falls score across all safety grades.

A
0
B
0
C
6
D
0
F
0

What You Should Know About Sioux Falls Water

  • Your city's water systems recorded 7 violations since 2021.
  • Average of reported 90th-percentile lead results: 0.0039 mg/L.
  • Estimated remediation: $525 per household.
  • Health risk index (ZipCheckup composite of CDC data): 12.12.

Who Supplies Your Water in Sioux Falls

Sorted by reported population served, the top 3 of 9 public water systems mapped to Sioux Falls, SD appear below, each with its own federal compliance record.

Overview

We track home safety data for 20 ZIP codes in Sioux Falls, South Dakota, covering 9 community water systems serving approximately 204,373 people. The EPA snapshots used for this build directly map water systems to 9 of 20 ZIP codes.

4 of 9 ZIP codes with a reported violation count in the available EPA record (44%) have recorded EPA violations. 2 health-based violations appear in the available health breakdown.

Home Safety Score

Average Home Safety Score for Sioux Falls: C (66/100)

Model 4.0.0 uses four measured components across three equally weighted domains. If a required domain is unavailable, no score is published:

Factor What It Measures
Water Quality EPA violations and compliance history
PFAS MCL Screen UCMR 5 testing against the covered federal MCLs
Radon Risk EPA radon zone classification
Annual AQI EPA AirData county-year median with at least 90 observed days

Water Sources

Sioux Falls water systems draw from: Groundwater, Surface water.

Lead & Copper

  • Average of reported 90th-percentile lead results: 0.0039 mg/L (EPA action level: 0.015 mg/L)
  • 0 of 9 ZIP codes with known status exceed the EPA lead action level

Radon Risk

20 of 20 ZIP records with known zones are in EPA Radon Zone 1.

The EPA recommends testing all homes regardless of radon zone. County radon zones cannot replace an in-home radon test.

Top Contaminants

Contaminant Category Violations ZIPs Affected
Chlorine Disinfectant 6 3
Stage 1 Disinfectants and Disinfection Byproducts Rule Treatment Technique 4 2
Revised Total Coliform Rule Microbiological 3 2

Areas with Most Violations

ZIP Code Safety Score Violations Health-Based System
57110 C 5 2 Sioux Falls
57108 — 3 0 Sioux Falls
57103 — 1 1 Sioux Falls
57106 C 1 0 Sioux Falls

Areas with No Violations

ZIP Code Safety Score System Population
57104 C Sioux Falls 216,462
57105 C Sioux Falls 216,462
57107 C Sioux Falls 216,462
57117 C Sioux Falls 216,462
57197 — Sioux Falls 216,462

All ZIP Codes in Sioux Falls

Data Sources

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

Health Outcomes in Sioux Falls

9.7%
Asthma (US: 9.8%)
10.5%
Diabetes (US: 10.4%)
15.6%
Poor Mental Health (US: 14.8%)

Source: CDC PLACES (County-level estimates). County health indicators are shown for context only and are not linked to this area's water records.

Compared to National Average

Asthma 9.7% ↓
Diabetes 10.5% ↑
Mental Health 15.6% ↑

Vertical line = national average. ■ Above national · ■ Below national

Top Contaminants in Sioux Falls Water

Chlorine 6 violations
Disinfectant · EPA regulatory level for the contaminant named above: 4 mg/L
Stage 1 Disinfectants and Disinfection Byproducts Rule 4 violations
Treatment Technique
Revised Total Coliform Rule 3 violations
Microbiological
Indicates possible bacterial contamination

Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.

Cost Context: What Remediation Means for Sioux Falls Homeowners

Because the median home value in Sioux Falls is large relative to the estimated cost of remediation, the ratio between them stays at or below 1%; that is a statement about two area-level numbers, not a quote for a particular house or a judgment about what an owner can pay.

Median Home Value
$250,700
Est. Remediation
$525
Remediation as % of home value 0.2%

Estimated remediation costs in Sioux Falls can be compared with local home values. The $300–$900 estimated range can be set against the median property value; actual costs vary by home. Home values are 44% above the South Dakota average.

Lead Exposure Risk for Children in Sioux Falls

0.0039
mg/L average of reported water-system 90th-percentile lead results (the 0.015 action level applies to each system's result, not to this average)

Why children are most at risk: The CDC states that no safe blood lead level in children has been identified. Children under 6 absorb lead more readily than adults, and even low levels can cause developmental delays, learning difficulties, and behavioral problems.

Available area-level lead records for Sioux Falls do not determine the lead level at an individual tap. Testing is the only way to confirm your water's lead content.

Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.

Historical NFIP Claim Context in Sioux Falls

284
Total FEMA Flood Claims
$31,779
Avg Reported Sum With Payment Data
50%
A/V Share of Claim-Record ZIPs

Historical NFIP data for Sioux Falls contains 284 flood insurance claims. Among claims with payment data, the average reported building, contents, and ICC component sum is $31,779. Among ZIP codes with claim records, 50% have an A- or V-family dominant rated zone recorded in those historical claims. This is not a complete current FEMA property-map inventory.

How flooding affects water quality: Flood events can introduce sewage, agricultural runoff, and industrial chemicals into water supplies. Even after floodwaters recede, contamination can persist in wells and aging infrastructure. The $525 remediation estimate shown here excludes flood insurance and is not derived from NFIP claim count.

Claim count does not establish current property risk. Check the exact address in FEMA's current map and obtain a property-specific insurance quote when relevant.

Source: historical FEMA National Flood Insurance Program (NFIP) claim records. No current FEMA property-map designation is asserted.

What You Can Do in Sioux Falls

  1. Test your water at home. City-level data shows averages - your tap may differ. Check the certification, price and turnaround time of any water test kit or lab service.
  2. Install a certified water filter. For Chlorine, listed in the water-quality records for Sioux Falls: if it is a rule or reporting requirement rather than a contaminant, ask your utility what the record involved; for bacteria, follow any boil-water notice from your utility; for a specific chemical contaminant, check whether a filter is certified to reduce it. Not every contaminant has a consumer filter certification.
  3. Check your home's plumbing. Homes built before 1986 may have lead solder in pipes. A licensed plumber can assess your risk.

Deep Dive Reports

Detailed analysis for Sioux Falls, SD

Frequently Asked Questions

What does the Home Safety Score mean for Sioux Falls, SD?
Sioux Falls has an average Home Safety Score of 66/100 (Grade C) under ZipCheckup model 4.0.0, an area-level model that draws on EPA water compliance records, PFAS screening, EPA radon zones, and annual EPA air quality data; see the methodology page for how inputs and coverage are handled. 7 violations appear in EPA records for water systems mapped to these ZIP codes. Check individual ZIP code reports for component details.
How many violations are on record for water systems serving Sioux Falls?
EPA records list 7 EPA violations, including 2 health-based violations for Sioux Falls water systems. These water-system violations are shown for 20 mapped ZIP codes.
Does Sioux Falls water have lead?
The average of the reported 90th-percentile lead results across the ZIP codes of Sioux Falls is 0.0039 mg/L. The EPA action level of 0.015 mg/L applies to each water system's own 90th percentile, not to this average. EPA's health goal for lead is zero. Lead levels can vary by home - testing is recommended especially in older properties.
How does Sioux Falls compare to South Dakota average?
Sioux Falls has an average Home Safety Score of 66/100, which is below the South Dakota state average of 69/100 for the same model series.
How many water systems serve Sioux Falls?
Our records map 9 water systems to 20 ZIP codes in Sioux Falls. The related population figure in our data is approximately 204,373 people; it is not a count of people served citywide.
How much does it cost to fix water issues in Sioux Falls?
Estimated remediation cost per household in Sioux Falls: $525; modeled range $300 to $900. Estimated costs may include filtration, pipe replacement, radon mitigation, or flood protection where applicable.
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How to cite this page

APA ZipCheckup. (2026). Sioux Falls, SD: 2 Health Violations - Home Safety 66/100. https://zipcheckup.com/cities/sd/sioux-falls/
BibTeX 
@misc{zipcheckup-cities-sd-sioux-falls,
  author = {{ZipCheckup}},
  title  = {{Sioux Falls, SD: 2 Health Violations - Home Safety 66/100}},
  year   = {2026},
  url    = {https://zipcheckup.com/cities/sd/sioux-falls/}
}

Page version: October 2026.

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