Is Oglala tap water safe to drink?
- West Oglala Lakota UT, SD
- Oglala
The short answer for Oglala
Oglala tap water has lithium above EPA guidelines at 4.8× the limit (tested December 2024). See the full report with all tested compounds and filter options.
The health risk for Oglala
- lithium above limit.
lithium was detected above EPA limits. These filters are independently certified to reduce common drinking-water contaminants.
Here's what actually removes PFAS from your water
The right filter eliminates PFAS at the tap. But not all filters do - and the type you choose matters for your home.
Common pitchers like Brita do not remove PFAS. You need a filter independently certified to NSF P473 (for pitcher filters) or NSF/ANSI 58 (for reverse osmosis systems). All three options below carry the relevant certification.
| Compound | Measurement | EPA Limit | Comparison |
|---|---|---|---|
| lithium Tested: December 2024 · OGLALA RWS PIPELINE |
48.400 µg/L | 10 µg/L | 384% above limit |
View all tested compounds
OGLALA RWS PIPELINE · Tested: Multiple dates
| Compound | Measurement | EPA Limit | Comparison |
|---|---|---|---|
| lithium | 48.400 µg/L | 10 µg/L | 384% above limit |
| PFHxS | <0.003 µg/L | 0.004 µg/L | Below limit |
| HFPO-DA | <0.005 µg/L | 0.01 µg/L | Below limit |
| PFNA | <0.004 µg/L | 0.01 µg/L | Below limit |
| PFHxA | <0.003 µg/L | 3 µg/L | Below limit |
| PFBA | <0.005 µg/L | 6 µg/L | Below limit |
| 11Cl-PF3OUdS | <0.005 µg/L | 0.005 µg/L | Below limit |
| 4:2 FTS | <0.003 µg/L | 0.003 µg/L | Below limit |
| 6:2 FTS | <0.005 µg/L | 0.005 µg/L | Below limit |
| 8:2 FTS | <0.005 µg/L | 0.005 µg/L | Below limit |
| 9Cl-PF3ONS | <0.002 µg/L | 0.002 µg/L | Below limit |
| ADONA | <0.003 µg/L | 0.003 µg/L | Below limit |
| PFBS | <0.003 µg/L | 0.003 µg/L | Below limit |
| PFDA | <0.003 µg/L | 0.003 µg/L | Below limit |
| PFDoA | <0.003 µg/L | 0.003 µg/L | Below limit |
| PFHpA | <0.003 µg/L | 0.003 µg/L | Below limit |
| PFHpS | <0.003 µg/L | 0.003 µg/L | Below limit |
| PFOA | <0.004 µg/L | 0.004 µg/L | Below limit |
| PFOS | <0.004 µg/L | 0.004 µg/L | Below limit |
| PFPeA | <0.003 µg/L | 0.003 µg/L | Below limit |
| PFTrDA | <0.007 µg/L | 0.007 µg/L | Below limit |
| PFUnA | <0.002 µg/L | 0.002 µg/L | Below limit |
Water utilities serving ZIP 57764
Service area boundaries are approximate and based on state filings or modeled estimates. Contact your utility to confirm exact service at a specific address.
- OGLALA RWS PIPELINEAction advised
- WANBLEE EASTNo recent federal sampling
- WHITE HORSE CREEK WATER SYSTEMNo recent federal sampling
Frequently Asked Questions about ZIP 57764 Tap Water
What contaminants are above EPA limits in ZIP 57764?
ZIP 57764 has lithium above EPA health guidelines in the latest available data at 4.8x the EPA guideline. The full table on this page lists every tested compound and its measured level.
Will boiling ZIP 57764 tap water remove lithium?
No. Boiling tap water does not remove lithium. Lithium is a dissolved mineral, so heat does not break it down and evaporation can actually concentrate it. Reverse osmosis (NSF/ANSI 58) is the most reliable at-home option for reducing lithium.
Do basic pitcher filters remove lithium?
Standard pitcher filters are not certified to reduce lithium. Reverse osmosis (NSF/ANSI 58) is the most widely available home option for reducing lithium in drinking water.
Who provides tap water in ZIP 57764?
Public records identify OGLALA RWS PIPELINE as a primary water system associated with ZIP 57764. Service boundaries can vary by address, so confirm exact service with the utility.
When was ZIP 57764 tap water last tested?
The most recent test date used in this report is March 2025. EnviroClarity last refreshed this page on 2026-05-05.
Where can I find the official water quality report for ZIP 57764?
Every U.S. public water system is required to publish an annual Consumer Confidence Report (CCR). Contact OGLALA RWS PIPELINE or visit their website for the latest official report covering ZIP 57764. The EPA also maintains a national CCR locator.
Check another ZIP code
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Data reflects publicly reported utility records from EPA datasets and local utility disclosures. This information is educational and not medical advice.