Is Oostburg Waterworks Tap Water Safe? Quality Report

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

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

violations on file

still open

Violation	Type	Status	Period
Other	Monitoring	Resolved	2002-07-01
MR	Monitoring	Resolved	2000-10-01 → 2000-10-31
MR	Monitoring	Resolved	2000-10-01 → 2000-10-31
MR	Monitoring	Resolved	2000-10-01 → 2000-10-31
MR	Monitoring	Resolved	1995-01-01 → 1995-01-31
MR	Monitoring	Archived	1991-08-01 → 1991-08-31
MR	Monitoring	Archived	1991-08-01 → 1991-08-31
MR	Monitoring	Archived	1991-07-01 → 1991-07-31
MR	Monitoring	Archived	1991-07-01 → 1991-07-31

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	119.8 µg/L 9.2% of the EPA limit 1300 µg/L worst single sample: 1590 µg/L	37/40	SYR4	2014–2017
Lead	13.91 µg/L 93% of the EPA limit 15 µg/L worst single sample: 37.6 µg/L	27/40	SYR4	2014–2017
Lead	0.0105 mg/L 70% of the EPA limit 0.0150 mg/L	15/15	LCR	2023
Bromodichloromethane	9.92 µg/L No EPA limit set worst single sample: 10 µg/L	9/9	SYR4	2013–2019
Chloroform	18.2 µg/L No EPA limit set worst single sample: 23 µg/L	9/9	SYR4	2013–2019
Dibromochloromethane	6.98 µg/L No EPA limit set worst single sample: 7.1 µg/L	9/9	SYR4	2013–2019
Dichloroacetic Acid	3 µg/L No EPA limit set	9/9	SYR4	2013–2019
TTHM	35.42 µg/L 44% of the EPA limit 80 µg/L worst single sample: 39.5 µg/L	9/9	SYR4	2013–2019
Total Haloacetic Acids (HAA5)	7.108 µg/L 12% of the EPA limit 60 µg/L worst single sample: 7.2 µg/L	9/9	SYR4	2013–2019
Trichloroacetic Acid	2.08 µg/L No EPA limit set worst single sample: 2.2 µg/L	9/9	SYR4	2013–2019
Arsenic	7.825 µg/L 78% of the EPA limit 10 µg/L worst single sample: 8.2 µg/L	6/6	SYR4	2014–2017
Barium	51 µg/L 2.6% of the EPA limit 2000 µg/L worst single sample: 54 µg/L	6/6	SYR4	2014–2017
Fluoride	987.5 µg/L 25% of the EPA limit 4000 µg/L worst single sample: 1000 µg/L	6/6	SYR4	2014–2017
Dibromoacetic Acid	1.66 µg/L No EPA limit set worst single sample: 1.7 µg/L	5/9	SYR4	2013–2019
Bromoform	1.83 µg/L No EPA limit set worst single sample: 1.9 µg/L	3/9	SYR4	2013–2019
Combined Uranium	0.4750 µg/L 1.6% of the EPA limit 30 µg/L worst single sample: 0.4840 µg/L	2/2	SYR4	2014
Gross Alpha, Excl. Radon And U	3.35887 pCi/L 22% of the EPA limit 15 pCi/L worst single sample: 3.42 pCi/L	2/2	SYR4	2014
Monobromoacetic Acid	1.6485 µg/L No EPA limit set worst single sample: 1.7 µg/L	2/9	SYR4	2013–2019
Cadmium	0.2600 µg/L 5.2% of the EPA limit 5 µg/L	1/6	SYR4	2014–2017
Chromium	1 µg/L 1% of the EPA limit 100 µg/L	1/6	SYR4	2014–2017

54 contaminants tested, none detected

1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-Dichloropropane2,4,5-TP2,4-DAntimony, TotalAtrazineBhc-GammaBenzeneBeryllium, TotalChlorobenzeneCarbofuranCarbon TetrachlorideChlordaneDichloromethaneDalaponDinosebDiquatEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonochloroacetic AcidNitrateNitrate-NitriteNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

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Frequently asked questions about Oostburg Waterworks

Is Oostburg Waterworks tap water safe to drink?

EPA monitoring detected 20 contaminants in Oostburg Waterworks'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 Oostburg Waterworks's water?

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

How many people does Oostburg Waterworks serve?

Oostburg Waterworks reports serving 3,110 people in Wisconsin, per its EPA record.

Has Oostburg Waterworks had any water quality violations?

The EPA has 9 violations on file for Oostburg Waterworks, 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.