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Tap water quality report

Sioux Rural Water

EPA monitoring tested this supplier for 50 contaminants and detected 13. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

50
contaminants tested
13
detected
4,280
people served
3
health-based violations
South Dakota rankingsLead in South DakotaPFAS in South Dakota
Water source
Ground water
Ownership
Private
Counties served
Clark, Codington, Deuel, 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.

3
health-based violations
9
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2020-04-01 → 2020-06-30
MCL Health-based Resolved 2020-04-01 → 2020-06-30
MCL Health-based Resolved 2020-04-01 → 2020-06-30
MR Monitoring Resolved 2022-01-01 → 2022-12-31
MR Monitoring Resolved 2022-01-01 → 2022-12-31
MR Monitoring Resolved 2022-01-01 → 2022-12-31
MR Monitoring Resolved 2022-01-01 → 2022-12-31
MR Monitoring Resolved 2022-01-01 → 2022-12-31
MR Monitoring Resolved 2022-01-01 → 2022-12-31

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
797.5 µg/L 61%
of the EPA limit 1300 µg/L
worst single sample: 1570 µg/L
60/60 SYR4 2013–2019
Lead
6.24 µg/L 42%
of the EPA limit 15 µg/L
worst single sample: 11.1 µg/L
60/60 SYR4 2013–2019
TTHM
108.9 µg/L 136%
of the EPA limit, at the 95th percentile of samples — 80 µg/L
worst single sample: 114 µg/L
18/18 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
80.04 µg/L 133%
of the EPA limit, at the 95th percentile of samples — 60 µg/L
worst single sample: 95 µg/L
18/18 SYR4 2012–2019
Lead
0.0040 mg/L 27%
of the EPA limit 0.0150 mg/L
 14/14 LCR 2025
Nitrate
3200 µg/L 32%
of the EPA limit 10000 µg/L
 12/12 SYR4 2017–2019
Lithium
52.2 µg/L
No EPA limit set
 4/4 UCMR-5 2023
Antimony, Total
0.3900 µg/L 6.5%
of the EPA limit 6 µg/L
worst single sample: 0.4000 µg/L
2/2 SYR4 2013
Arsenic
2 µg/L 20%
of the EPA limit 10 µg/L
 2/2 SYR4 2013
Barium
103.275 µg/L 5.2%
of the EPA limit 2000 µg/L
worst single sample: 105 µg/L
2/2 SYR4 2013
Chromium
9.66 µg/L 9.7%
of the EPA limit 100 µg/L
worst single sample: 9.7 µg/L
2/2 SYR4 2013
Gross Alpha, Excl. Radon And U
6.735 pCi/L 45%
of the EPA limit 15 pCi/L
worst single sample: 6.8 pCi/L
2/2 SYR4 2019
Selenium
2.78 µg/L 5.6%
of the EPA limit 50 µg/L
worst single sample: 2.8 µg/L
2/2 SYR4 2013
37 contaminants tested, none detected
11Cl-PF3OUdS4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaBeryllium, TotalCadmiumCombined Radium (-226 And -228)Combined UraniumGross Beta Particle ActivityHfpo-DaMercuryNetfosaaNfdhaNmefosaaNitritePfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaThallium, Total

Utility contact

Contact
TRAVIS STEFFENSEN
Phone
6058821321
Email
[email protected]

Frequently asked questions about Sioux Rural Water

Is Sioux Rural Water tap water safe to drink?

EPA monitoring detected 13 contaminants in Sioux Rural Water'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 Sioux Rural Water's water?

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

How many people does Sioux Rural Water serve?

Sioux Rural Water reports serving 4,280 people in South Dakota, per its EPA record.

Has Sioux Rural Water had any water quality violations?

The EPA has 9 violations on file for Sioux Rural Water, of which 3 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.