Tap WaterIndex

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Tap water quality report

Northwood First Subdivision

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
90
people served
0
health-based violations
South Dakota rankingsLead in South DakotaPFAS in South Dakota
Water source
SWP
Ownership
Private
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.

0
health-based violations
9
violations on file
0
still open
ViolationTypeStatusPeriod
Other Monitoring Resolved 2023-07-01
Other Monitoring Resolved 2023-07-01
MR Monitoring Resolved 2023-04-01 → 2023-06-30
MR Monitoring Resolved 2023-04-01 → 2023-06-30
MR Monitoring Resolved 2023-04-01 → 2023-06-30
MR Monitoring Resolved 2020-04-01 → 2020-06-30
MR Monitoring Resolved 2020-04-01 → 2020-06-30
MR Monitoring Resolved 2015-07-01
MR Monitoring Resolved 2015-07-01

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
120 µg/L 9.2%
of the EPA limit 1300 µg/L
 20/20 SYR4 2014–2019
Lead
4.7 µg/L 31%
of the EPA limit 15 µg/L
 20/20 SYR4 2014–2019
Lead
0.0010 mg/L 6.7%
of the EPA limit 0.0150 mg/L
 5/5 LCR 2025
TTHM
11.4 µg/L 14%
of the EPA limit 80 µg/L
 5/5 SYR4 2015–2019
Total Haloacetic Acids (HAA5)
21.7 µg/L 36%
of the EPA limit 60 µg/L
 5/5 SYR4 2015–2019

Utility contact

Contact
ANDY VAN STEENWYK
Phone
6052257924
Email
wdm@midco.net

Frequently asked questions about Northwood First Subdivision

Is Northwood First Subdivision tap water safe to drink?

EPA monitoring detected 5 contaminants in Northwood First Subdivision'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 Northwood First Subdivision'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 Northwood First Subdivision serve?

Northwood First Subdivision reports serving 90 people in South Dakota, per its EPA record.

Has Northwood First Subdivision had any water quality violations?

The EPA has 9 violations on file for Northwood First Subdivision, 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.