Is Sturgeon Bay Waterworks Tap Water Safe? Quality Report

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

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
MR	Monitoring	Resolved	2004-04-01 → 2004-06-30
MR	Monitoring	Resolved	2004-04-01 → 2004-06-30
MR	Monitoring	Resolved	2004-04-01 → 2004-06-30
MR	Monitoring	Resolved	2004-04-01 → 2004-06-30
MR	Monitoring	Resolved	2004-04-01 → 2004-06-30
MR	Monitoring	Resolved	2004-04-01 → 2004-06-30
MR	Monitoring	Resolved	2004-04-01 → 2004-06-30
MR	Monitoring	Resolved	2004-04-01 → 2004-06-30
MR	Monitoring	Resolved	2004-04-01 → 2004-06-30
MR	Monitoring	Resolved	2004-04-01 → 2004-06-30

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 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	1064.6 µg/L 82% of the EPA limit 1300 µg/L worst single sample: 3150 µg/L	147/150	SYR4	2014–2019
Lead	20.1 µg/L 134% of the EPA limit, at the 95th percentile of samples — 15 µg/L worst single sample: 82 µg/L	139/150	SYR4	2014–2019
Fluoride	1145 µg/L 29% of the EPA limit 4000 µg/L worst single sample: 1320 µg/L	106/202	SYR4	2012–2019
Bromate	11 µg/L 110% of the EPA limit, at the 95th percentile of samples — 10 µg/L worst single sample: 15 µg/L	77/195	SYR4	2012–2019
Nitrate	5465 µg/L 55% of the EPA limit 10000 µg/L worst single sample: 5500 µg/L	68/68	SYR4	2012–2019
Lead	0.0036 mg/L 24% of the EPA limit 0.0150 mg/L	18/18	LCR	2023
Bromodichloromethane	6.34 µg/L No EPA limit set worst single sample: 7 µg/L	12/12	SYR4	2013–2019
Chloroform	13.8 µg/L No EPA limit set worst single sample: 16 µg/L	12/12	SYR4	2013–2019
Dibromochloromethane	3.28 µg/L No EPA limit set worst single sample: 3.5 µg/L	12/12	SYR4	2013–2019
TTHM	23.0655 µg/L 29% of the EPA limit 80 µg/L worst single sample: 25.7 µg/L	12/12	SYR4	2013–2019
Total Haloacetic Acids (HAA5)	7.1715 µg/L 12% of the EPA limit 60 µg/L worst single sample: 7.76 µg/L	12/12	SYR4	2013–2019
Barium	60 µg/L 3% of the EPA limit 2000 µg/L	10/10	SYR4	2014–2017
Dibromoacetic Acid	0.8800 µg/L No EPA limit set	10/12	SYR4	2013–2019
Nitrate-Nitrite	5565 µg/L 56% of the EPA limit 10000 µg/L worst single sample: 5700 µg/L	10/10	SYR4	2014–2017
Trichloroacetic Acid	3.865 µg/L No EPA limit set worst single sample: 4.9 µg/L	10/12	SYR4	2013–2019
Dichloroacetic Acid	3.175 µg/L No EPA limit set worst single sample: 3.2 µg/L	6/12	SYR4	2013–2019
Combined Uranium	0.8746 µg/L 2.9% of the EPA limit 30 µg/L worst single sample: 0.8910 µg/L	5/5	SYR4	2017
Bromoform	0.8370 µg/L No EPA limit set worst single sample: 0.8600 µg/L	3/12	SYR4	2013–2019
Monobromoacetic Acid	0.5205 µg/L No EPA limit set worst single sample: 0.5300 µg/L	2/12	SYR4	2013–2019

55 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, TotalArsenicAtrazineBhc-GammaBenzeneBeryllium, TotalChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDinosebDiquatEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonochloroacetic AcidNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Frequently asked questions about Sturgeon Bay Waterworks

Is Sturgeon Bay Waterworks tap water safe to drink?

EPA monitoring detected 19 contaminants in Sturgeon Bay 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 Sturgeon Bay Waterworks's water?

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

How many people does Sturgeon Bay Waterworks serve?

Sturgeon Bay Waterworks reports serving 9,700 people in Wisconsin, per its EPA record.

Has Sturgeon Bay Waterworks had any water quality violations?

The EPA has 12 violations on file for Sturgeon Bay 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.