Tap WaterIndex

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Tap water quality report

Estelline

EPA monitoring tested this supplier for 16 contaminants and detected 10. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

16
contaminants tested
10
detected
749
people served
67
health-based violations
South Dakota rankingsLead in South DakotaPFAS in South Dakota
Water source
GWP
Ownership
Local government
Counties served
Hamlin

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.

67
health-based violations
193
violations on file
0
still open
ViolationTypeStatusPeriod
TT Health-based Resolved 2023-03-30
TT Health-based Resolved 2023-03-30
MCL Health-based Resolved 2007-07-01 → 2007-09-30
MCL Health-based Resolved 2007-07-01 → 2007-09-30
MCL Health-based Resolved 2007-07-01 → 2007-09-30
MCL Health-based Resolved 2007-07-01 → 2007-09-30
MCL Health-based Resolved 2005-11-01 → 2005-11-30
MCL Health-based Resolved 2005-11-01 → 2005-11-30
MCL Health-based Resolved 2005-11-01 → 2005-11-30
MCL Health-based Resolved 2004-07-01 → 2004-07-31

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 single worst sample on record — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Nitrate
9400 µg/L 94%
of the EPA limit 10000 µg/L
 28/28 SYR4 2012–2019
Copper
150 µg/L 12%
of the EPA limit 1300 µg/L
 20/20 SYR4 2014–2017
Lead
4.5 µg/L 30%
of the EPA limit 15 µg/L
 20/20 SYR4 2014–2017
Lead
0.0030 mg/L 20%
of the EPA limit 0.0150 mg/L
 14/14 LCR 2023
TTHM
11.4 µg/L 14%
of the EPA limit 80 µg/L
 3/7 SYR4 2013–2019
Total Haloacetic Acids (HAA5)
4.38 µg/L 7.3%
of the EPA limit 60 µg/L
 3/7 SYR4 2013–2019
Barium
179 µg/L 9%
of the EPA limit 2000 µg/L
 2/2 SYR4 2012–2019
Chromium
5.9 µg/L 5.9%
of the EPA limit 100 µg/L
 2/2 SYR4 2012–2019
Selenium
2.4 µg/L 4.8%
of the EPA limit 50 µg/L
 2/2 SYR4 2012–2019
Arsenic
1 µg/L 10%
of the EPA limit 10 µg/L
 1/2 SYR4 2012–2019
6 contaminants tested, none detected
Antimony, TotalBeryllium, TotalCadmiumMercuryNitriteThallium, Total

Utility contact

Contact
ZEBULION GILBERTSON
Phone
6058732388
Email
estellsd@heartlandpower.org

Frequently asked questions about Estelline

Is Estelline tap water safe to drink?

EPA monitoring detected 10 contaminants in Estelline'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 Estelline's water?

EPA monitoring detected Nitrate, Copper, Lead, Lead, TTHM, and others. The full list with the level and data source for each is above.

How many people does Estelline serve?

Estelline reports serving 749 people in South Dakota, per its EPA record.

Has Estelline had any water quality violations?

The EPA has 193 violations on file for Estelline, of which 67 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.