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Tap water quality report

Spearfish Valley Mobile Estates

EPA monitoring tested this supplier for 19 contaminants and detected 6. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

19
contaminants tested
6
detected
163
people served
8
health-based violations
South Dakota rankingsLead in South DakotaPFAS in South Dakota
Water source
Ground water
Ownership
Private
Counties served
Lawrence

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.

8
health-based violations
24
violations on file
0
still open
ViolationTypeStatusPeriod
TT Health-based Resolved 2021-10-01
TT Health-based Resolved 2021-10-01
MCL Health-based Resolved 1998-12-01 → 1998-12-31
MCL Health-based Resolved 1998-12-01 → 1998-12-31
MCL Health-based Resolved 1998-12-01 → 1998-12-31
MCL Health-based Resolved 1998-11-01 → 1998-11-30
MCL Health-based Resolved 1998-11-01 → 1998-11-30
MCL Health-based Resolved 1998-11-01 → 1998-11-30
MON Monitoring Resolved 2024-02-01 → 2024-02-29
MON Monitoring Resolved 2024-02-01 → 2024-02-29

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
Copper
214 µg/L 16%
of the EPA limit 1300 µg/L
 15/15 SYR4 2012–2018
Lead
3 µg/L 20%
of the EPA limit 15 µg/L
 15/15 SYR4 2012–2018
Lead
0.0030 mg/L 20%
of the EPA limit 0.0150 mg/L
 14/14 LCR 2024
Nitrate
1490 µg/L 15%
of the EPA limit 10000 µg/L
 10/10 SYR4 2015–2019
Barium
300 µg/L 15%
of the EPA limit 2000 µg/L
 1/1 SYR4 2012
Fluoride
100 µg/L 2.5%
of the EPA limit 4000 µg/L
 1/1 SYR4 2012
13 contaminants tested, none detected
Antimony, TotalArsenicBeryllium, TotalCadmiumChromiumCombined Radium (-226 And -228)Combined UraniumGross Alpha, Excl. Radon And UGross Beta Particle ActivityMercuryNitriteSeleniumThallium, Total

Utility contact

Contact
DON ZACHER
Email
donald@dakotaappraisals.com

Frequently asked questions about Spearfish Valley Mobile Estates

Is Spearfish Valley Mobile Estates tap water safe to drink?

EPA monitoring detected 6 contaminants in Spearfish Valley Mobile Estates'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 Spearfish Valley Mobile Estates's water?

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

How many people does Spearfish Valley Mobile Estates serve?

Spearfish Valley Mobile Estates reports serving 163 people in South Dakota, per its EPA record.

Has Spearfish Valley Mobile Estates had any water quality violations?

The EPA has 24 violations on file for Spearfish Valley Mobile Estates, of which 8 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.