Is Cedar Grove 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
MCL	Health-based	Resolved	1997-07-01 → 1997-07-31
MCL	Health-based	Resolved	1997-07-01 → 1997-07-31
MCL	Health-based	Resolved	1997-07-01 → 1997-07-31
MCL	Health-based	Resolved	1997-07-01 → 1997-07-31
MCL	Health-based	Resolved	1994-12-01 → 1994-12-31
MR	Monitoring	Resolved	2014-09-01 → 2014-11-30
MR	Monitoring	Resolved	2014-09-01 → 2014-11-30
MR	Monitoring	Resolved	2014-09-01 → 2014-11-30
MR	Monitoring	Resolved	2014-09-01 → 2014-11-30
MR	Monitoring	Resolved	2014-09-01 → 2014-11-30

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	303.45 µg/L 23% of the EPA limit 1300 µg/L worst single sample: 532 µg/L	54/95	SYR4	2014–2019
Lead	22.78 µg/L 152% of the EPA limit, at the 95th percentile of samples — 15 µg/L worst single sample: 26.7 µg/L	25/95	SYR4	2014–2019
Lead	0.0089 mg/L 59% of the EPA limit 0.0150 mg/L	19/19	LCR	2023
Bromodichloromethane	4.527 µg/L No EPA limit set worst single sample: 4.8 µg/L	8/8	SYR4	2013–2019
Chloroform	7.535 µg/L No EPA limit set worst single sample: 8.2 µg/L	8/8	SYR4	2013–2019
Dibromochloromethane	2.788 µg/L No EPA limit set worst single sample: 2.9 µg/L	8/8	SYR4	2013–2019
TTHM	15.069 µg/L 19% of the EPA limit 80 µg/L worst single sample: 16.28 µg/L	8/8	SYR4	2013–2019
Total Haloacetic Acids (HAA5)	5.3149 µg/L 8.9% of the EPA limit 60 µg/L worst single sample: 5.506 µg/L	8/8	SYR4	2013–2019
Trichloroacetic Acid	1.8275 µg/L No EPA limit set worst single sample: 1.95 µg/L	8/8	SYR4	2013–2019
Dichloroacetic Acid	2.628 µg/L No EPA limit set worst single sample: 2.64 µg/L	7/8	SYR4	2013–2019
Barium	27.8 µg/L 1.4% of the EPA limit 2000 µg/L worst single sample: 28.4 µg/L	6/6	SYR4	2014–2017
Dibromoacetic Acid	0.7450 µg/L No EPA limit set worst single sample: 0.7500 µg/L	6/8	SYR4	2013–2019
Fluoride	722.5 µg/L 18% of the EPA limit 4000 µg/L worst single sample: 730 µg/L	6/6	SYR4	2014–2017
Arsenic	2.414 µg/L 24% of the EPA limit 10 µg/L worst single sample: 2.45 µg/L	5/6	SYR4	2014–2017
Combined Radium (-226 And -228)	1.985 pCi/L 40% of the EPA limit 5 pCi/L worst single sample: 2.057 pCi/L	4/4	SYR4	2014–2017
Gross Alpha, Excl. Radon And U	3.854 pCi/L 26% of the EPA limit 15 pCi/L worst single sample: 4.09 pCi/L	3/3	SYR4	2014
Chromium	0.6967 µg/L 0.7% of the EPA limit 100 µg/L worst single sample: 0.7090 µg/L	2/6	SYR4	2014–2017
Cadmium	0.1080 µg/L 2.2% of the EPA limit 5 µg/L	1/6	SYR4	2014–2017
Monobromoacetic Acid	0.4100 µg/L No EPA limit set	1/8	SYR4	2013–2019

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, TotalBromoformChlorobenzeneCarbofuranCarbon TetrachlorideChlordaneDichloromethaneDalaponDinosebDiquatEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonochloroacetic AcidNitrateNitrate-NitriteNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

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Frequently asked questions about Cedar Grove Waterworks

Is Cedar Grove Waterworks tap water safe to drink?

EPA monitoring detected 19 contaminants in Cedar Grove 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 Cedar Grove 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 Cedar Grove Waterworks serve?

Cedar Grove Waterworks reports serving 2,213 people in Wisconsin, per its EPA record.

Has Cedar Grove Waterworks had any water quality violations?

The EPA has 81 violations on file for Cedar Grove Waterworks, of which 5 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.