TOLSTOY

TOLSTOY, SD · ~36 people served

Check your exact address → TOLSTOY overview

100

Excellent

PurityRadar safety score

PWSID

SD4600331

State

South Dakota

City

TOLSTOY

Population served

Primary source

SWP

Score history

No change since tracking began Jun 18, 2026.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 100

2 score updates logged since tracking began Jun 18, 2026. Each future EPA re-score adds a point.

PFAS & contaminant readings

No PFAS detections are on record for this system from EPA’s UCMR5 monitoring (2023–25). Absence of a detection isn’t a guarantee — not every system was sampled, and this dataset doesn’t cover other contaminants.

Violations & enforcement

Violations on record

Unaddressed

Health-based

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Jun 2025. Official EPA record →

Other · EPA contaminant 7500 began Mar 2024 Resolved

Monitoring · Lead & Copper Rule began Jun 2023 Resolved

Monitoring & reporting · EPA contaminant 0999 began Apr 2023 Resolved

Monitoring · Lead & Copper Rule began Feb 2023 Resolved

Monitoring & reporting · EPA contaminant 0999 began Jan 2023 Resolved

Monitoring · Lead & Copper Rule began Jul 2022 Resolved

Monitoring & reporting · EPA contaminant 0999 began Jul 2022 Resolved

Monitoring · Lead & Copper Rule began Apr 2022 Resolved

Monitoring · Lead & Copper Rule began Oct 2021 Resolved

Treatment technique · EPA contaminant 0400 health-based began Feb 2016 Resolved

Monitoring & reporting · EPA contaminant 0999 began Apr 2009 Resolved

Treatment technique · EPA contaminant 0400 health-based began Jan 2009 Resolved

Recent enforcement actions

State action · SOX Jun 2025
State action · SIF May 2024
State action · SOX Apr 2024
State action · SFG Apr 2024
State action · SIF Apr 2024
State action · SOX Aug 2023
State action · SOX Jul 2023
State action · SOX Jul 2023

This profile is built from EPA public records for system SD4600331 — SDWIS violations and UCMR5 PFAS sampling. The score is system-level and can’t account for your home’s plumbing (older pipes can add lead at the tap). For health decisions, check your exact address, read the utility’s Consumer Confidence Report, and confirm with your provider.