Is Brookfield Water Utility Tap Water Safe? Quality Report

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

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.

157

health-based violations

502

violations on file

still open

Violation	Type	Status	Period
MCL	Health-based	Archived	2026-01-01 → 2026-03-31
MCL	Health-based	Resolved	2020-04-01 → 2020-06-30
MCL	Health-based	Resolved	2020-04-01 → 2020-06-30
MCL	Health-based	Resolved	2020-04-01 → 2020-06-30
MCL	Health-based	Resolved	2020-04-01 → 2020-06-30
MCL	Health-based	Resolved	2020-01-01 → 2020-03-31
MCL	Health-based	Resolved	2020-01-01 → 2020-03-31
MCL	Health-based	Resolved	2020-01-01 → 2020-03-31
MCL	Health-based	Resolved	2020-01-01 → 2020-03-31
MCL	Health-based	Resolved	2019-10-01 → 2019-12-31

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
Combined Radium (-226 And -228)	8.07 pCi/L 161% of the EPA limit, at the 95th percentile of samples — 5 pCi/L worst single sample: 9.7 pCi/L	107/107	SYR4	2012–2019
Gross Alpha, Excl. Radon And U	16.25 pCi/L 108% of the EPA limit, at the 95th percentile of samples — 15 pCi/L worst single sample: 38.2447 pCi/L	96/96	SYR4	2012–2019
Copper	1100 µg/L 85% of the EPA limit 1300 µg/L worst single sample: 1700 µg/L	89/90	SYR4	2013–2019
Lead	11.35 µg/L 76% of the EPA limit 15 µg/L worst single sample: 65 µg/L	72/90	SYR4	2013–2019
Dibromochloromethane	9.75 µg/L No EPA limit set worst single sample: 15 µg/L	51/84	SYR4	2012–2019
Bromodichloromethane	12.2 µg/L No EPA limit set worst single sample: 18 µg/L	49/84	SYR4	2012–2019
TTHM	33.3 µg/L 42% of the EPA limit 80 µg/L worst single sample: 50.2 µg/L	48/48	SYR4	2012–2019
Bromoform	5.39 µg/L No EPA limit set worst single sample: 6.7 µg/L	43/84	SYR4	2012–2019
Chloroform	8.875 µg/L No EPA limit set worst single sample: 16 µg/L	38/84	SYR4	2012–2019
Nitrate	853.5 µg/L 8.5% of the EPA limit 10000 µg/L worst single sample: 1100 µg/L	38/202	SYR4	2012–2019
Barium	153 µg/L 7.7% of the EPA limit 2000 µg/L worst single sample: 160 µg/L	35/35	SYR4	2014–2019
Fluoride	793 µg/L 20% of the EPA limit 4000 µg/L worst single sample: 810 µg/L	35/35	SYR4	2014–2019
Total Haloacetic Acids (HAA5)	9.658 µg/L 16% of the EPA limit 60 µg/L worst single sample: 12.48 µg/L	33/36	SYR4	2012–2019
Dibromoacetic Acid	3.55 µg/L No EPA limit set worst single sample: 3.9 µg/L	31/36	SYR4	2012–2019
Arsenic	5.62 µg/L 56% of the EPA limit 10 µg/L worst single sample: 6 µg/L	20/34	SYR4	2014–2017
Lead	0.0015 mg/L 10% of the EPA limit 0.0150 mg/L	16/16	LCR	2023
Trichloroacetic Acid	2.94 µg/L No EPA limit set worst single sample: 3.2 µg/L	14/36	SYR4	2012–2019
Dichloroacetic Acid	4.9 µg/L No EPA limit set worst single sample: 5.1 µg/L	11/36	SYR4	2012–2019
Monobromoacetic Acid	0.8990 µg/L No EPA limit set worst single sample: 0.9500 µg/L	7/36	SYR4	2012–2019
Nitrate-Nitrite	856 µg/L 8.6% of the EPA limit 10000 µg/L worst single sample: 860 µg/L	5/34	SYR4	2014–2017
Combined Uranium	0.9683 µg/L 3.2% of the EPA limit 30 µg/L worst single sample: 1 µg/L	3/4	SYR4	2013–2017
Di(2-ethylhexyl) Phthalate	2.3 µg/L 38% of the EPA limit 6 µg/L	1/5	SYR4	2014–2017
Mercury	0.1500 µg/L 7.5% of the EPA limit 2 µg/L	1/34	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, TotalChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDinosebDiquatEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMethoxychlorMonochloroacetic AcidNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Frequently asked questions about Brookfield Water Utility

Is Brookfield Water Utility tap water safe to drink?

EPA monitoring detected 23 contaminants in Brookfield Water Utility'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 Brookfield Water Utility's water?

EPA monitoring detected Combined Radium (-226 And -228), Gross Alpha, Excl. Radon And U, Copper, Lead, Dibromochloromethane, and others. The full list with the level and data source for each is above.

How many people does Brookfield Water Utility serve?

Brookfield Water Utility reports serving 29,070 people, per its EPA record.

Has Brookfield Water Utility had any water quality violations?

The EPA has 502 violations on file for Brookfield Water Utility, of which 157 are health-based (a contaminant limit or required treatment was breached) and 1 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.