Is Cedarburg L & W Commission Tap Water Safe? Quality Report

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

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	2010-07-01 → 2010-09-30
MCL	Health-based	Resolved	2010-07-01 → 2010-09-30
MCL	Health-based	Resolved	2010-07-01 → 2010-09-30
MCL	Health-based	Resolved	2010-07-01 → 2010-09-30
MCL	Health-based	Resolved	2010-07-01 → 2010-09-30
MCL	Health-based	Resolved	2010-07-01 → 2010-09-30
MCL	Health-based	Resolved	2010-07-01 → 2010-09-30
MR	Monitoring	Resolved	2003-01-01 → 2003-12-31
MR	Monitoring	Resolved	2003-01-01 → 2003-12-31
MR	Monitoring	Resolved	2003-01-01 → 2003-12-31

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
Fluoride	1188.5 µg/L 30% of the EPA limit 4000 µg/L worst single sample: 1510 µg/L	104/200	SYR4	2012–2019
Copper	1700 µg/L 131% of the EPA limit, at the 95th percentile of samples — 1300 µg/L worst single sample: 2000 µg/L	60/60	SYR4	2014–2017
Lead	14.2 µg/L 95% of the EPA limit 15 µg/L worst single sample: 310 µg/L	60/60	SYR4	2014–2017
Trichloroethylene	15.4 µg/L 308% of the EPA limit, at the 95th percentile of samples — 5 µg/L worst single sample: 18 µg/L	57/159	SYR4	2012–2019
Nitrate	1330 µg/L 13% of the EPA limit 10000 µg/L worst single sample: 1500 µg/L	38/48	SYR4	2012–2019
cis-1,2-Dichloroethylene	2.945 µg/L 4.2% of the EPA limit 70 µg/L worst single sample: 3.3 µg/L	38/143	SYR4	2012–2019
Dibromochloromethane	6.195 µg/L No EPA limit set worst single sample: 6.9 µg/L	30/125	SYR4	2012–2019
Bromodichloromethane	4.37 µg/L No EPA limit set worst single sample: 6.1 µg/L	23/125	SYR4	2012–2019
TTHM	18.05 µg/L 23% of the EPA limit 80 µg/L worst single sample: 24.7 µg/L	20/20	SYR4	2012–2019
Bromoform	3.6 µg/L No EPA limit set worst single sample: 4.5 µg/L	19/125	SYR4	2012–2019
Total Haloacetic Acids (HAA5)	3.943 µg/L 6.6% of the EPA limit 60 µg/L worst single sample: 5.32 µg/L	18/20	SYR4	2012–2019
Chloroform	3.58 µg/L No EPA limit set worst single sample: 9.5 µg/L	17/125	SYR4	2012–2019
Dibromoacetic Acid	2.42 µg/L No EPA limit set worst single sample: 2.5 µg/L	17/20	SYR4	2012–2019
Lead	0.0076 mg/L 51% of the EPA limit 0.0150 mg/L	16/16	LCR	2023
Barium	140 µg/L 7% of the EPA limit 2000 µg/L	8/8	SYR4	2014–2017
Dichloroacetic Acid	1.492 µg/L No EPA limit set worst single sample: 1.8 µg/L	8/20	SYR4	2012–2019
trans-1,2-Dichloroethylene	1.17 µg/L 1.2% of the EPA limit 100 µg/L worst single sample: 1.2 µg/L	7/112	SYR4	2012–2019
Nitrate-Nitrite	1250 µg/L 13% of the EPA limit 10000 µg/L worst single sample: 1300 µg/L	6/8	SYR4	2014–2017
Vinyl Chloride	0.7125 µg/L 36% of the EPA limit 2 µg/L worst single sample: 0.7500 µg/L	6/110	SYR4	2012–2019
Combined Radium (-226 And -228)	1.7822 pCi/L 36% of the EPA limit 5 pCi/L worst single sample: 1.832 pCi/L	4/4	SYR4	2014
Monobromoacetic Acid	0.5770 µg/L No EPA limit set worst single sample: 0.5800 µg/L	4/20	SYR4	2012–2019
Arsenic	3.3 µg/L 33% of the EPA limit 10 µg/L	2/8	SYR4	2014–2017
Combined Uranium	0.7480 µg/L 2.5% of the EPA limit 30 µg/L	1/1	SYR4	2017
Trichloroacetic Acid	0.2300 µg/L No EPA limit set	1/20	SYR4	2012–2019

52 contaminants tested, none detected

1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane2,4,5-TP2,4-DAntimony, TotalAtrazineBhc-GammaBenzeneBeryllium, TotalChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonochloroacetic AcidNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneXylenes, TotalO-DichlorobenzeneP-Dichlorobenzene

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Frequently asked questions about Cedarburg L & W Commission

Is Cedarburg L & W Commission tap water safe to drink?

EPA monitoring detected 24 contaminants in Cedarburg L & W Commission'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 Cedarburg L & W Commission's water?

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

How many people does Cedarburg L & W Commission serve?

Cedarburg L & W Commission reports serving 12,500 people in Wisconsin, per its EPA record.

Has Cedarburg L & W Commission had any water quality violations?

The EPA has 96 violations on file for Cedarburg L & W Commission, of which 7 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.