Tap WaterIndex

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Tap water quality report

Frederick

EPA monitoring tested this supplier for 5 contaminants and detected 5. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

5
contaminants tested
5
detected
215
people served
2
health-based violations
South Dakota rankingsLead in South DakotaPFAS in South Dakota
Water source
SWP
Ownership
Local government
Counties served
Brown

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.

2
health-based violations
22
violations on file
0
still open
ViolationTypeStatusPeriod
TT Health-based Resolved 2014-03-26
TT Health-based Resolved 2014-03-26
MR Monitoring Resolved 2020-10-01
MR Monitoring Resolved 2020-10-01
MR Monitoring Resolved 2020-10-01
Other Monitoring Resolved 2007-07-01
Other Monitoring Resolved 2007-07-01
MR Monitoring Resolved 2001-09-01 → 2001-09-30
MR Monitoring Resolved 2001-09-01 → 2001-09-30
MR Monitoring Resolved 2001-09-01 → 2001-09-30

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
Lead
0.0020 mg/L 13%
of the EPA limit 0.0150 mg/L
 14/14 LCR 2023
Copper
970 µg/L 75%
of the EPA limit 1300 µg/L
worst single sample: 1240 µg/L
10/10 SYR4 2014–2017
Lead
2.51 µg/L 17%
of the EPA limit 15 µg/L
worst single sample: 2.6 µg/L
10/10 SYR4 2014–2017
TTHM
12.19 µg/L 15%
of the EPA limit 80 µg/L
worst single sample: 13 µg/L
7/7 SYR4 2013–2019
Total Haloacetic Acids (HAA5)
24.36 µg/L 41%
of the EPA limit 60 µg/L
worst single sample: 27.6 µg/L
7/7 SYR4 2013–2019

Utility contact

Contact
DAVID LOSURE
Phone
6053292242
Email
[email protected]

Frequently asked questions about Frederick

Is Frederick tap water safe to drink?

EPA monitoring detected 5 contaminants in Frederick'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 Frederick's water?

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

How many people does Frederick serve?

Frederick reports serving 215 people in South Dakota, per its EPA record.

Has Frederick had any water quality violations?

The EPA has 22 violations on file for Frederick, of which 2 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.