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Norris, SD Tap Water Quality 2026

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

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

Main Utility: Sicangu Mni Wiconi Rural Water System PWSID: 084690516 Updated: 2026 Q2
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1 violation currently open

Lead is 1.10 ppb, 7% of the action level. No PFAS was detected.

D

Norris earns a D for water quality

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

Lead: 1.10 ppb — 7% of the federal action level
PFAS tested, none detected
9 violations since 2015, 3 health-based
1 violation currently open
Norris's lead level vs. all South Dakota community water systems
0 ppb5 ppb10 ppb15 ppb
Lead level: 1.10 ppb — 7% of the federal action level
✓ Lower lead than 64% of South Dakota utilities
Population Served
61
~888 connections
Water Source
Surface water
Purchased from another system — SDWIS source code SWP
Active Violations
1
1 open of 9 since 2015

Lead & Copper Testing

Lead (Pb)
90th percentile of tap samples collected across the distribution system
7% of EPA action level
1.10 ppb
Action level: 15 ppb
The 90th-percentile lead result is 1.10 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
LEAD AND COPPER RULE REVISIONS REPORTING FAILURE — — 2024 Unaddressed
LEAD AND COPPER RULE REVISIONS TREATMENT TECHNIQUE — — 2024 Unaddressed
Lead and Copper Rule MONITORING AND REPORTING — TT 2023 Resolved
Revised Total Coliform Rule REPORTING FAILURE — — 2023 Resolved
Revised Total Coliform Rule REPORTING FAILURE — — 2022 Resolved
Revised Total Coliform Rule MONITORING FAILURE — — 2017 Resolved
Coliform (TCR) MCL EXCEEDANCE — 5% of samples 2015 Resolved
Coliform (TCR) MONITORING AND REPORTING — 5% of samples 2015 Resolved
Coliform (TCR) MCL EXCEEDANCE — 5% of samples 2015 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 9 recorded since 2015 (3 health-based).

About the Main Water System

Utility Sicangu Mni Wiconi Rural Water System
PWSID 084690516
Water source Surface water — Purchased from another system — SDWIS source code SWP
Population served 61
Service connections 888
Systems serving this area 2
Regulator US EPA (tribal primacy)
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Norris tap water safe to drink? ▼
No federal limit is exceeded on record. 1 violation(s) remain open. Lead is 1.10 ppb, 7% of the action level.
Does Norris water have PFAS? ▼
It was tested for the six regulated PFAS compounds and none were detected.
Who supplies water to Norris? ▼
Sicangu Mni Wiconi Rural Water System (PWSID 084690516), 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 2023-10-12. No significant deficiencies were recorded.

What Should Norris 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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