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Tap water quality report

Edgemont

EPA monitoring tested this supplier for 21 contaminants and detected 9. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

21
contaminants tested
9
detected
725
people served
61
health-based violations
South Dakota rankingsLead in South DakotaPFAS in South Dakota
Water source
Ground water
Ownership
Local government
Counties served
Fall River

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.

61
health-based violations
483
violations on file
0
still open
ViolationTypeStatusPeriod
TT Health-based Resolved 2021-10-20
TT Health-based Resolved 2021-10-20
TT Health-based Resolved 2021-09-05
TT Health-based Resolved 2021-09-05
TT Health-based Resolved 2021-09-05
MCL Health-based Resolved 2015-05-01 → 2015-05-31
MCL Health-based Resolved 2015-05-01 → 2015-05-31
MCL Health-based Resolved 2015-05-01 → 2015-05-31
MCL Health-based Resolved 2015-03-01 → 2015-03-31
MCL Health-based Resolved 2015-03-01 → 2015-03-31

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 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
438 µg/L 34%
of the EPA limit 1300 µg/L
worst single sample: 958 µg/L
60/60 SYR4 2014–2018
Lead
7 µg/L 47%
of the EPA limit 15 µg/L
worst single sample: 18 µg/L
60/60 SYR4 2014–2018
Lead
0.0030 mg/L 20%
of the EPA limit 0.0150 mg/L
 15/15 LCR 2023
Barium
70 µg/L 3.5%
of the EPA limit 2000 µg/L
 3/3 SYR4 2012–2018
Fluoride
1207 µg/L 30%
of the EPA limit 4000 µg/L
worst single sample: 1230 µg/L
3/3 SYR4 2012–2018
Gross Alpha, Excl. Radon And U
13.24 pCi/L 88%
of the EPA limit 15 pCi/L
worst single sample: 13.5 pCi/L
3/3 SYR4 2017–2018
Arsenic
8 µg/L 80%
of the EPA limit 10 µg/L
 2/3 SYR4 2015–2018
Nitrate
200 µg/L 2%
of the EPA limit 10000 µg/L
 2/8 SYR4 2012–2019
TTHM
2.859 µg/L 3.6%
of the EPA limit 80 µg/L
worst single sample: 2.87 µg/L
2/7 SYR4 2014–2019
12 contaminants tested, none detected
Antimony, TotalBeryllium, TotalCadmiumChromiumCombined Radium (-226 And -228)Combined UraniumGross Beta Particle ActivityMercuryNitriteSeleniumThallium, TotalTotal Haloacetic Acids (HAA5)

Utility contact

Contact
KYLE KAISER
Email
city@gwtc.net

Frequently asked questions about Edgemont

Is Edgemont tap water safe to drink?

EPA monitoring detected 9 contaminants in Edgemont'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 Edgemont's water?

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

How many people does Edgemont serve?

Edgemont reports serving 725 people in South Dakota, per its EPA record.

Has Edgemont had any water quality violations?

The EPA has 483 violations on file for Edgemont, of which 61 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.