Tap WaterIndex

← South Dakota

Tap water quality report

Wentworth

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
181
people served
0
health-based violations
South Dakota rankingsLead in South DakotaPFAS in South Dakota
Water source
GWP
Ownership
Local government
Counties served
Lake

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.

0
health-based violations
67
violations on file
0
still open
ViolationTypeStatusPeriod
Other Monitoring Archived 2001-04-08 → 2001-05-07
MR Monitoring Resolved 2001-03-01 → 2001-03-31
MR Monitoring Resolved 2001-03-01 → 2001-03-31
MR Monitoring Resolved 2001-03-01 → 2001-03-31
Other Monitoring Archived 2000-03-11 → 2000-04-10
MR Monitoring Resolved 2000-01-01 → 2000-01-31
MR Monitoring Resolved 2000-01-01 → 2000-01-31
MR Monitoring Resolved 2000-01-01 → 2000-01-31
Other Monitoring Archived 1998-04-12 → 1998-05-11
MR Monitoring Archived 1998-02-01 → 1998-02-28

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
30 µg/L 2.3%
of the EPA limit 1300 µg/L
 30/30 SYR4 2012–2018
Lead
4.8 µg/L 32%
of the EPA limit 15 µg/L
 30/30 SYR4 2012–2018
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 13/13 LCR 2024
TTHM
84.2 µg/L 105%
of the EPA limit, in the worst sample — 80 µg/L
 10/10 SYR4 2013–2018
Total Haloacetic Acids (HAA5)
21 µg/L 35%
of the EPA limit 60 µg/L
 10/10 SYR4 2013–2018

Utility contact

Contact
JEFF CARRUTHERS
Phone
6059972098
Email
jeff@bigsiouxcws.com

Frequently asked questions about Wentworth

Is Wentworth tap water safe to drink?

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

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

How many people does Wentworth serve?

Wentworth reports serving 181 people in South Dakota, per its EPA record.

Has Wentworth had any water quality violations?

The EPA has 67 violations on file for Wentworth, of which 0 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.