B64/100
EAGLE BUTTE — Water Quality Report 2026
Serving 4,000 people · South Dakota
Water Source
Purchased Surface Water
County
—
System ID
SD4600010
Violations
24
Contaminant Test Results
EPA Violation History
4
Violations (last 5yr)
0
Unresolved
1
Health-Related
TIER 2Resolved
Maximum contaminant level violation
When: November 15, 2024 – October 30, 2025Rule: Total Coliform RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved
Failed Level 2 Assessment under Revised Total Coliform Rule
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: August 1, 2024 – September 30, 2024Rule: Stage 2 DBPREnforcement: Resolving — corrective action underway
TIER 3Resolved
Failed Level 2 Assessment under Revised Total Coliform Rule
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: August 1, 2024 – September 30, 2024Rule: Stage 2 DBPREnforcement: Resolving — corrective action underway
TIER 3Resolved
Failed Level 2 Assessment under Revised Total Coliform Rule
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: January 1, 2024 – March 31, 2024Rule: Stage 1 DBPREnforcement: Resolving — corrective action underway
Understanding violation severity
Tier 1Urgent health risk. Utility must notify all customers within 24 hours.Tier 2Important health or treatment issue. Customers notified within 30 days.Tier 3Administrative or monitoring issue. Reported in the annual water quality report.
Source: EPA Safe Drinking Water Information System (SDWIS) · Updated quarterly
Frequently Asked Questions About EAGLE BUTTE
Is EAGLE BUTTE water safe to drink?
EAGLE BUTTE water receives a grade of B (64/100), which is considered good. Out of 31 contaminants tested, none exceed EPA legal limits. The water meets federal safety standards.
What contaminants has EAGLE BUTTE detected?
31 contaminants were tested in EAGLE BUTTE's water. No contaminants exceed EPA legal limits or health goals, indicating good water quality management.
Does EAGLE BUTTE have any EPA violations?
Yes, EAGLE BUTTE has 24 EPA violation(s) on record, with the most recent in 2024. Violation types include TT, MR, Other. 3 are health-based violations.
How many people does EAGLE BUTTE serve?
EAGLE BUTTE serves approximately 4,000 people, South Dakota. The system provides water to 1 community: Eagle Butte.
What type of water does EAGLE BUTTE provide?
EAGLE BUTTE sources its water from purchased surface water. Surface water comes from rivers, lakes, or reservoirs and typically requires more extensive treatment. The utility's system ID is SD4600010.
How does EAGLE BUTTE compare to other utilities in South Dakota?
EAGLE BUTTE scores 64/100 with a grade of B (good). This is an above-average performance for utilities statewide. Visit our South Dakota state page for a full comparison of water systems.