Lower Brule, SD Tap Water Quality 2026

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

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

Main Utility: Lower Brule Rural Water Supply System PWSID: 084690441 Updated: 2026 Q2

✅

No federal limits exceeded on record

Lead is 0.60 ppb, 4% of the action level and no violations are open. PFAS has never been sampled at this system.

Lower Brule earns a B for water quality

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

Lead: 0.60 ppb — 4% of the federal action level

PFAS never sampled at this system

55 violations since 2015, 1 health-based

No violations currently open

Lower Brule's lead level vs. all South Dakota community water systems

0 ppb5 ppb10 ppb15 ppb

Lead level: 0.60 ppb — 4% of the federal action level

✓ Lower lead than 97% of South Dakota utilities

Population Served

703

~673 connections

Water Source

Surface water

Drawn from surface water — SDWIS source code SW

Active Violations

55 since 2015, all resolved

Lead & Copper Testing

Lead (Pb)

90th percentile of tap samples collected across the distribution system

4% of EPA action level

0.60 ppb

Action level: 15 ppb

The 90th-percentile lead result is 0.60 ppb, 4% 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)

Contaminant	Type	Measured	Limit	Period	Status
Surface Water Treatment Rule	MONITORING AND REPORTING	—	—	2025	Resolved
Revised Total Coliform Rule	MONITORING FAILURE	—	—	2025	Archived
Lead and Copper Rule	MONITORING AND REPORTING	—	TT	2025	Resolved
Arsenic	MONITORING AND REPORTING	—	0.010 mg/L	2025	Archived
Barium	MONITORING AND REPORTING	—	2 mg/L	2025	Archived
Cadmium	MONITORING AND REPORTING	—	0.005 mg/L	2025	Archived
Chromium	MONITORING AND REPORTING	—	0.1 mg/L	2025	Archived
CYANIDE	MONITORING AND REPORTING	—	0.2 mg/L	2025	Archived
Fluoride	MONITORING AND REPORTING	—	4.0 mg/L	2025	Archived
Mercury	MONITORING AND REPORTING	—	0.002 mg/L	2025	Archived
Nickel	MONITORING AND REPORTING	—	—	2025	Archived
Antimony, Total	MONITORING AND REPORTING	—	0.006 mg/L	2025	Archived
Beryllium, Total	MONITORING AND REPORTING	—	0.004 mg/L	2025	Archived
Thallium, Total	MONITORING AND REPORTING	—	0.002 mg/L	2025	Archived
Selenium	MONITORING AND REPORTING	—	0.05 mg/L	2025	Archived
Consumer Confidence Rule	OTHER	—	—	2024	Resolved
Endrin	MONITORING AND REPORTING	—	0.002 mg/L	2023–2025	Archived
BHC-GAMMA	MONITORING AND REPORTING	—	0.0002 mg/L	2023–2025	Archived
Methoxychlor	MONITORING AND REPORTING	—	0.04 mg/L	2023–2025	Archived
Toxaphene	MONITORING AND REPORTING	—	0.003 mg/L	2023–2025	Archived
Dalapon	MONITORING AND REPORTING	—	0.2 mg/L	2023–2025	Archived
Diquat	MONITORING AND REPORTING	—	0.02 mg/L	2023–2025	Archived
Endothall	MONITORING AND REPORTING	—	0.1 mg/L	2023–2025	Archived
Glyphosate	MONITORING AND REPORTING	—	0.7 mg/L	2023–2025	Archived
Di(2-ethylhexyl) adipate	MONITORING AND REPORTING	—	0.4 mg/L	2023–2025	Archived
OXAMYL	MONITORING AND REPORTING	—	0.2 mg/L	2023–2025	Archived
Simazine	MONITORING AND REPORTING	—	0.004 mg/L	2023–2025	Archived
Di(2-ethylhexyl) phthalate	MONITORING AND REPORTING	—	0.006 mg/L	2023–2025	Archived
Picloram	MONITORING AND REPORTING	—	0.5 mg/L	2023–2025	Archived
Dinoseb	MONITORING AND REPORTING	—	0.007 mg/L	2023–2025	Archived
Hexachlorocyclopentadiene	MONITORING AND REPORTING	—	0.05 mg/L	2023–2025	Archived
Carbofuran	MONITORING AND REPORTING	—	0.04 mg/L	2023–2025	Archived
Atrazine	MONITORING AND REPORTING	—	0.003 mg/L	2023–2025	Archived
LASSO	MONITORING AND REPORTING	—	—	2023–2025	Archived
Heptachlor	MONITORING AND REPORTING	—	0.0004 mg/L	2023–2025	Archived
Heptachlor epoxide	MONITORING AND REPORTING	—	0.0002 mg/L	2023–2025	Archived
2,4-D	MONITORING AND REPORTING	—	0.07 mg/L	2023–2025	Archived
2,4,5-TP	MONITORING AND REPORTING	—	0.05 mg/L	2023–2025	Archived
HEXACHLOROBENZENE	MONITORING AND REPORTING	—	0.001 mg/L	2023–2025	Archived
Benzo(a)pyrene	MONITORING AND REPORTING	—	0.0002 mg/L	2023–2025	Archived
Pentachlorophenol	MONITORING AND REPORTING	—	0.001 mg/L	2023–2025	Archived
Total Polychlorinated Biphenyls (PCB)	MONITORING AND REPORTING	—	0.0005 mg/L	2023–2025	Archived
1,2-DIBROMO-3-CHLOROPROPANE	MONITORING AND REPORTING	—	0.0002 mg/L	2023–2025	Archived
ETHYLENE DIBROMIDE	MONITORING AND REPORTING	—	0.00005 mg/L	2023–2025	Archived
Chlordane	MONITORING AND REPORTING	—	0.002 mg/L	2023–2025	Archived
Lead and Copper Rule	MONITORING AND REPORTING	—	TT	2022	Resolved
CYANIDE	MONITORING AND REPORTING	—	0.2 mg/L	2022	Resolved
Fluoride	MONITORING AND REPORTING	—	4.0 mg/L	2022	Resolved
TTHM	MCL EXCEEDANCE	0.084 MG/L	0.080 mg/L	2021	Resolved
E. COLI	MONITORING AND REPORTING	—	0	2018	Resolved
Gross Alpha, Excl. Radon and U	MONITORING AND REPORTING	—	15 pCi/L	2015–2020	Resolved
Combined Uranium	MONITORING AND REPORTING	—	30 ug/L	2015–2020	Resolved
Combined Radium (-226 and -228)	MONITORING AND REPORTING	—	5 pCi/L	2015–2020	Resolved
Radium-226	MONITORING AND REPORTING	—	—	2015–2020	Resolved
Radium-228	MONITORING AND REPORTING	—	—	2015–2020	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

55 violations are on record since 2015, of which 1 were health-based. All have been resolved and none remain open.

About the Main Water System

Utility Lower Brule Rural Water Supply System

PWSID 084690441

Water source Surface water — Drawn from surface water — SDWIS source code SW

Population served 703

Service connections 673

Systems serving this area 1

Regulator US EPA (tribal primacy)

Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Lower Brule tap water safe to drink? ▼

No federal limit is exceeded on record. No violations are currently open. Lead is 0.60 ppb, 4% of the action level.

Does Lower Brule 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 Lower Brule? ▼

Lower Brule Rural Water Supply System (PWSID 084690441). Surface water. Drawn from surface water — SDWIS source code SW

When was this system last inspected? ▼

It was last inspected on 2023-09-27. Inspectors recorded 2 significant deficiencies.

What Should Lower Brule Residents Do?

Read your annual water report

Your supplier publishes a Consumer Confidence Report each July covering the prior year.

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.

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

West Brule, Sd Tap Water Quality 2026 Lyman Presho, Sd Tap Water Quality 2026 Lyman Oacoma, Sd Tap Water Quality 2026 Lyman Kennebec, Sd Tap Water Quality 2026 Lyman