Water Quality in Flandreau, SD (57028)

EPA violation data for public water systems serving ZIP code 57028.

Based on EPA compliance data. Not a substitute for an official water quality report from your utility.

3,450

Population

4

Water Systems

10

Violations (5yr)

1

Health-Based

Location

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Water Systems Serving This Area (4)

Flandreau

1 health-based
Purchased groundwater 2,372 people served
2 violations (5yr) · 1 health-based · All resolved
Lead tested: 1 ppb (limit: 15 ppb)

Flandreau Bia School

Groundwater 450 people served
0 violations

Flandreau School

Purchased groundwater 375 people served
8 violations (5yr)
Lead tested: 7.7 ppb (limit: 15 ppb)

Pleasant Valley Colony

Groundwater 107 people served
0 violations
Lead tested: 1 ppb (limit: 15 ppb)

Contaminants Found

Stage 1 Disinfectants and Disinfection Byproducts RuleHealth-Based
1 violation
All resolved
Lead and Copper RuleMonitoring

Lead and copper testing requirement. Lead exposure can cause developmental harm in children.

3 violations
Has active
TTHMMonitoring
2 violations
Has active
Total Haloacetic Acids (HAA5)Monitoring
2 violations
Has active
Revised Total Coliform RuleMonitoring

Missed testing deadlines — not a detection of bacteria.

2 violations
All resolved

Lead & Copper Levels

Lead (Pb)

Approaching limit
7.7 ppb measured Action level: 15 ppb

Sampled: Jan 2025

How Does This Compare?

Flandreau (57028) has more violations than 67% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 10.

Fewer violations 67th percentile More violations

Recommended Water Filters

Based on health-based violations detected in your area, these filter types are commonly used to address similar contaminants. Consult your water utility's Consumer Confidence Report for the most current data.

Activated Carbon Filter

Excellent for removing chlorine, chloramine, and disinfection byproducts like THMs and HAAs. Available as pitcher filters, countertop, or under-sink units.

Targets:THMs, HAAs, Chlorine, Chloramine, Taste & Odor

Look for:NSF/ANSI 42 & 53 certified

Always look for filters certified by NSF International for the specific contaminants you want to remove. This is general educational information, not an endorsement of any specific product.

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