States ›South Dakota ›Brown County ›Aberdeen

Aberdeen, SD Tap Water Quality 2026

Water quality report for Aberdeen, SD — PFAS, lead and copper results, violation history and state inspection findings from EPA SDWIS.

A look at Aberdeen's drinking water using EPA enforcement records: violations, lead and copper results, PFAS sampling and state inspection findings.

Main Utility: Aberdeen PWSID: SD4600020 Updated: 2026 Q2
✅

No federal limits exceeded on record

Lead is 3.00 ppb, 20% of the action level and no violations are open. No PFAS was detected.

B

Aberdeen earns a B for water quality

Graded on violations, lead, and PFAS, with state inspection findings.

Lead: 3.00 ppb — 20% of the federal action level
PFAS tested, none detected
7 violations since 2015, 7 health-based
No violations currently open
Aberdeen's lead level vs. all South Dakota community water systems
0 ppb5 ppb10 ppb15 ppb
Lead level: 3.00 ppb — 20% of the federal action level
✓ Lower lead than 29% of South Dakota utilities
Population Served
19698
~8968 connections
Water Source
Surface water
Drawn from surface water — SDWIS source code SW
Active Violations
0
7 since 2015, all resolved

Lead & Copper Testing

Lead (Pb)
90th percentile of tap samples collected across the distribution system
20% of EPA action level
3.00 ppb
Action level: 15 ppb
The 90th-percentile lead result is 3.00 ppb, 20% of the 15 ppb federal action level. The action level is a treatment trigger, not a legal maximum, and it is measured across sampled taps rather than at any single home.

Contaminant Violations (2015–Present)

ContaminantTypeMeasuredLimitPeriodStatus
Interim Enhanced Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2026 Archived
Interim Enhanced Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2025 Resolved
Interim Enhanced Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2024 Resolved
Interim Enhanced Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2024 Resolved
Interim Enhanced Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2024 Resolved
Interim Enhanced Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2023 Resolved
Interim Enhanced Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2022 Resolved
Understanding violation types MCL violations mean a contaminant exceeded the federal maximum limit — the most serious type.
TT (Treatment Technique) violations mean required treatment procedures weren't followed, but don't necessarily mean contamination occurred.

Violation History

7 violations are on record since 2015, of which 7 were health-based. All have been resolved and none remain open.

About the Main Water System

Utility Aberdeen
PWSID SD4600020
Water source Surface water — Drawn from surface water — SDWIS source code SW
Population served 19,698
Service connections 8,968
Systems serving this area 5
Regulator State primacy agency
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Aberdeen tap water safe to drink? ▼
No federal limit is exceeded on record. No violations are currently open. Lead is 3.00 ppb, 20% of the action level.
Does Aberdeen water have PFAS? ▼
It was tested for the six regulated PFAS compounds and none were detected.
Who supplies water to Aberdeen? ▼
Aberdeen (PWSID SD4600020), one of 5 systems serving this area. Surface water. Drawn from surface water — SDWIS source code SW
When was this system last inspected? ▼
It was last inspected on 2024-07-26. No significant deficiencies were recorded.

What Should Aberdeen Residents Do?

1
Read your annual water report
Your supplier publishes a Consumer Confidence Report each July covering the prior year.
2
Check for a lead service line
Lead reaches tap water mainly through service lines and household plumbing. Suppliers now publish an inventory identifying lead lines.
3
Flush before drinking
If water has sat in pipes more than six hours, run the cold tap for two minutes before drinking or cooking.

Nearby Cities in South Dakota

Groton, Sd Tap Water Quality 2026 Brown Warner, Sd Tap Water Quality 2026 Brown Frederick, Sd Tap Water Quality 2026 Brown Hecla, Sd Tap Water Quality 2026 Brown Columbia, Sd Tap Water Quality 2026 Brown Prairiewood Village, Sd Tap Water Quality 2026 Brown