Tap WaterIndex

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Tap water quality report

Eagle Butte

EPA monitoring tested this supplier for 35 contaminants and detected 6. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

35
contaminants tested
6
detected
4,000
people served
6
health-based violations
South Dakota rankingsLead in South DakotaPFAS in South Dakota
Water source
SWP
Ownership
Local government
Counties served
Dewey

Compliance record

Formal violations the EPA has on file for this supplier. A health-based violation means a contaminant limit or a required treatment was breached; the rest are monitoring or reporting failures — still violations, but not a measured health risk.

6
health-based violations
52
violations on file
0
still open
ViolationTypeStatusPeriod
TT Health-based Resolved 2024-11-15
TT Health-based Resolved 2024-11-15
TT Health-based Resolved 2017-11-01
TT Health-based Resolved 2017-11-01
TT Health-based Resolved 2010-02-01
TT Health-based Resolved 2010-02-01
MR Monitoring Resolved 2024-08-01 → 2024-09-30
MR Monitoring Resolved 2024-08-01 → 2024-09-30
MR Monitoring Resolved 2024-08-01 → 2024-09-30
MR Monitoring Resolved 2024-08-01 → 2024-09-30

Other contaminants detected

Each bar shows the measured level as a share of the EPA limit: green is well under, amber is close to it, red is over. For lead and copper the limit applies to exactly the 90th-percentile figure shown, so red there means a real exceedance. For everything else the limit applies to a running annual average while the figure is the 95th percentile of this system's samples — over 100% is worth reading, but is not by itself a violation. Where a single sample came in higher than that percentile, it is noted under the bar. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Copper
102 µg/L 7.8%
of the EPA limit 1300 µg/L
worst single sample: 350 µg/L
40/40 SYR4 2014–2017
Lead
6.03 µg/L 40%
of the EPA limit 15 µg/L
worst single sample: 8.7 µg/L
40/40 SYR4 2014–2017
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 15/15 LCR 2023
TTHM
34.94 µg/L 44%
of the EPA limit 80 µg/L
worst single sample: 36.5 µg/L
14/14 SYR4 2013–2019
Total Haloacetic Acids (HAA5)
27.22 µg/L 45%
of the EPA limit 60 µg/L
worst single sample: 29.3 µg/L
14/14 SYR4 2013–2019
Lithium
48.5 µg/L
No EPA limit set
 4/4 UCMR-5 2025
29 contaminants tested, none detected
11Cl-PF3OUdS4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaHfpo-DaNetfosaaNfdhaNmefosaaPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfuna

Utility contact

Contact
ROBERT RACKARD
Phone
6059648783
Email
[email protected]; jmwa

Frequently asked questions about Eagle Butte

Is Eagle Butte tap water safe to drink?

EPA monitoring detected 6 contaminants in Eagle Butte's water. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and the utility's annual Consumer Confidence Report for its official compliance status.

What contaminants were detected in Eagle Butte's water?

EPA monitoring detected Copper, Lead, Lead, TTHM, Total Haloacetic Acids (HAA5), and others. The full list with the level and data source for each is above.

How many people does Eagle Butte serve?

Eagle Butte reports serving 4,000 people in South Dakota, per its EPA record.

Has Eagle Butte had any water quality violations?

The EPA has 52 violations on file for Eagle Butte, of which 6 are health-based (a contaminant limit or required treatment was breached) and 0 remain open. The rest are monitoring or reporting failures.

Where does this data come from?

Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.