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Tap water quality report

Greenwood Colony

EPA monitoring tested this supplier for 19 contaminants and detected 8. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

19
contaminants tested
8
detected
85
people served
21
health-based violations
South Dakota rankingsLead in South DakotaPFAS in South Dakota
Water source
Ground water
Ownership
Private
Counties served
Douglas

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.

21
health-based violations
304
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2014-07-01 → 2014-07-31
MCL Health-based Resolved 2014-07-01 → 2014-07-31
MCL Health-based Resolved 2014-07-01 → 2014-07-31
MCL Health-based Resolved 2006-08-01 → 2006-08-31
MCL Health-based Resolved 2006-08-01 → 2006-08-31
MCL Health-based Resolved 2006-08-01 → 2006-08-31
MCL Health-based Resolved 2005-06-01 → 2005-06-30
MCL Health-based Resolved 2005-06-01 → 2005-06-30
MCL Health-based Resolved 2005-06-01 → 2005-06-30
MCL Health-based Resolved 2001-04-01 → 2001-04-30

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 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
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 13/13 LCR 2025
Copper
40 µg/L 3.1%
of the EPA limit 1300 µg/L
 10/10 SYR4 2013–2018
Lead
0.9000 µg/L 6%
of the EPA limit 15 µg/L
 10/10 SYR4 2013–2018
Nitrate
1400 µg/L 14%
of the EPA limit 10000 µg/L
 6/6 SYR4 2017–2019
Nitrite
1140 µg/L 114%
of the EPA limit, in the worst sample — 1000 µg/L
 2/3 SYR4 2014–2018
Barium
21.1 µg/L 1.1%
of the EPA limit 2000 µg/L
 1/1 SYR4 2017
Chromium
7.1 µg/L 7.1%
of the EPA limit 100 µg/L
 1/1 SYR4 2017
Fluoride
400 µg/L 10%
of the EPA limit 4000 µg/L
 1/1 SYR4 2017
11 contaminants tested, none detected
Antimony, TotalArsenicBeryllium, TotalCadmiumCombined Radium (-226 And -228)Combined UraniumGross Alpha, Excl. Radon And UGross Beta Particle ActivityMercurySeleniumThallium, Total

Utility contact

Contact
PAUL GLANZER
Phone
6054915158
Email
mpghogs@gmail.com

Frequently asked questions about Greenwood Colony

Is Greenwood Colony tap water safe to drink?

EPA monitoring detected 8 contaminants in Greenwood Colony'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 Greenwood Colony's water?

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

How many people does Greenwood Colony serve?

Greenwood Colony reports serving 85 people in South Dakota, per its EPA record.

Has Greenwood Colony had any water quality violations?

The EPA has 304 violations on file for Greenwood Colony, of which 21 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.