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Leola, SD Tap Water Quality 2026

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

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

Main Utility: Leola PWSID: SD4600194 Updated: 2026 Q2
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1 violation currently open

Lead is 1.00 ppb, 7% of the action level. PFAS has never been sampled at this system.

C

Leola earns a C for water quality

Graded on violations and lead, with state inspection findings. PFAS not tested.

Lead: 1.00 ppb — 7% of the federal action level
PFAS never sampled at this system
5 violations since 2015, 2 health-based
1 violation currently open
Leola's lead level vs. all South Dakota community water systems
0 ppb5 ppb10 ppb15 ppb
Lead level: 1.00 ppb — 7% of the federal action level
✓ Lower lead than 96% of South Dakota utilities
Population Served
433
~280 connections
Water Source
Surface water
Purchased from another system — SDWIS source code SWP
Active Violations
1
1 open of 5 since 2015

Lead & Copper Testing

Lead (Pb)
90th percentile of tap samples collected across the distribution system
7% of EPA action level
1.00 ppb
Action level: 15 ppb
The 90th-percentile lead result is 1.00 ppb, 7% 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
Revised Total Coliform Rule MONITORING FAILURE — — 2023 Resolved
Groundwater Rule TREATMENT TECHNIQUE — — 2023 Unaddressed
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2023 Resolved
Long Term 2 Enhanced Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2019 Resolved
Revised Total Coliform Rule OTHER — — 2016 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

1 violation remains open, out of 5 recorded since 2015 (2 health-based).

About the Main Water System

Utility Leola
PWSID SD4600194
Water source Surface water — Purchased from another system — SDWIS source code SWP
Population served 433
Service connections 280
Systems serving this area 2
Regulator State primacy agency
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Leola tap water safe to drink? ▼
No federal limit is exceeded on record. 1 violation(s) remain open. Lead is 1.00 ppb, 7% of the action level.
Does Leola water have PFAS? ▼
This system has never been sampled for PFAS. EPA's national monitoring covered systems serving 3,300 people or more, so no results exist — which is not evidence that none is present.
Who supplies water to Leola? ▼
Leola (PWSID SD4600194), one of 2 systems serving this area. Surface water. Purchased from another system — SDWIS source code SWP
When was this system last inspected? ▼
It was last inspected on 2022-12-06. No significant deficiencies were recorded.

What Should Leola 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
Follow the open violation
This system has an unresolved violation. Contact the supplier for its corrective-action schedule.

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