Is Box Elder Tap Water Safe? Quality Report

Water source: Ground water
Ownership: Local government
Counties served: Pennington

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.

health-based violations

326

violations on file

still open

Violation	Type	Status	Period
MCL	Health-based	Archived	2025-07-01 → 2025-09-30
MCL	Health-based	Archived	2025-07-01 → 2025-09-30
MCL	Health-based	Archived	2025-04-01 → 2025-06-30
MCL	Health-based	Archived	2025-04-01 → 2025-06-30
MCL	Health-based	Resolved	2024-07-01 → 2024-09-30
MCL	Health-based	Resolved	2024-07-01 → 2024-09-30
MCL	Health-based	Resolved	2024-07-01 → 2024-09-30
MCL	Health-based	Resolved	2022-04-01 → 2022-06-30
MCL	Health-based	Resolved	2022-04-01 → 2022-06-30
MCL	Health-based	Resolved	2022-04-01 → 2022-06-30

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.

Contaminant	Level vs EPA limit	Detection rate	Source	Period
Copper	293.15 µg/L 23% of the EPA limit 1300 µg/L worst single sample: 586 µg/L	40/40	SYR4	2014–2017
Lead	4 µg/L 27% of the EPA limit 15 µg/L worst single sample: 5 µg/L	40/40	SYR4	2014–2017
Lead	0.0020 mg/L 13% of the EPA limit 0.0150 mg/L	14/14	LCR	2023
Nitrate	593 µg/L 5.9% of the EPA limit 10000 µg/L	6/22	SYR4	2013–2019
Gross Alpha, Excl. Radon And U	15.36 pCi/L 102% of the EPA limit, at the 95th percentile of samples — 15 pCi/L worst single sample: 16.3 pCi/L	5/5	SYR4	2014–2017
Barium	99.9 µg/L 5% of the EPA limit 2000 µg/L worst single sample: 105 µg/L	4/6	SYR4	2013–2017
Chromium	4.4 µg/L 4.4% of the EPA limit 100 µg/L worst single sample: 5 µg/L	4/6	SYR4	2013–2017
Selenium	18.25 µg/L 37% of the EPA limit 50 µg/L worst single sample: 19 µg/L	4/6	SYR4	2013–2017
Lithium	14 µg/L No EPA limit set	4/6	UCMR-5	2023
TTHM	7.379 µg/L 9.2% of the EPA limit 80 µg/L worst single sample: 7.49 µg/L	3/9	SYR4	2013–2019
Combined Uranium	8.8735 µg/L 30% of the EPA limit 30 µg/L worst single sample: 9.15 µg/L	2/5	SYR4	2014–2017
Fluoride	400 µg/L 10% of the EPA limit 4000 µg/L	1/1	SYR4	2017

39 contaminants tested, none detected

11Cl-PF3OUdS4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalArsenicBeryllium, TotalCadmiumCombined Radium (-226 And -228)Gross Beta Particle ActivityHfpo-DaMercuryNetfosaaNfdhaNmefosaaNitritePfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaThallium, TotalTotal Haloacetic Acids (HAA5)

Utility contact

Contact: JOSH SADLER
Phone: 6059231404
Email: [email protected]

Frequently asked questions about Box Elder

Is Box Elder tap water safe to drink?

EPA monitoring detected 12 contaminants in Box Elder'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 Box Elder's water?

EPA monitoring detected Copper, Lead, Lead, Nitrate, Gross Alpha, Excl. Radon And U, and others. The full list with the level and data source for each is above.

How many people does Box Elder serve?

Box Elder reports serving 14,000 people in South Dakota, per its EPA record.

Has Box Elder had any water quality violations?

The EPA has 326 violations on file for Box Elder, of which 47 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.