Is Hartland Waterworks 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.

health-based violations

violations on file

still open

Violation	Type	Status	Period
MCL	Health-based	Resolved	2014-08-01 → 2014-08-31
MCL	Health-based	Resolved	2014-08-01 → 2014-08-31
MCL	Health-based	Resolved	2014-08-01 → 2014-08-31
MCL	Health-based	Resolved	2014-08-01 → 2014-08-31
MCL	Health-based	Resolved	2014-08-01 → 2014-08-31
MCL	Health-based	Resolved	1996-06-01 → 1996-06-30
MCL	Health-based	Resolved	1996-06-01 → 1996-06-30
MCL	Health-based	Resolved	1996-06-01 → 1996-06-30
MCL	Health-based	Resolved	1996-06-01 → 1996-06-30
MR	Monitoring	Resolved	2021-02-01

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
Nitrate	5600 µg/L 56% of the EPA limit 10000 µg/L worst single sample: 6560 µg/L	176/176	SYR4	2012–2019
Fluoride	1090 µg/L 27% of the EPA limit 4000 µg/L worst single sample: 1230 µg/L	105/206	SYR4	2012–2019
Copper	1825 µg/L 140% of the EPA limit, at the 95th percentile of samples — 1300 µg/L worst single sample: 5400 µg/L	66/66	SYR4	2014–2017
Lead	18.75 µg/L 125% of the EPA limit, at the 95th percentile of samples — 15 µg/L worst single sample: 230 µg/L	66/66	SYR4	2014–2017
Dibromochloromethane	4.175 µg/L No EPA limit set worst single sample: 4.4 µg/L	26/36	SYR4	2013–2019
Bromoform	3.785 µg/L No EPA limit set worst single sample: 4.3 µg/L	24/35	SYR4	2013–2019
Lead	0.0042 mg/L 28% of the EPA limit 0.0150 mg/L	20/20	LCR	2025
Bromodichloromethane	1.95 µg/L No EPA limit set worst single sample: 2.4 µg/L	19/35	SYR4	2013–2019
Barium	88.8 µg/L 4.4% of the EPA limit 2000 µg/L worst single sample: 93 µg/L	15/15	SYR4	2012–2019
Nitrate-Nitrite	5535 µg/L 55% of the EPA limit 10000 µg/L worst single sample: 5600 µg/L	14/14	SYR4	2012–2019
Combined Radium (-226 And -228)	1.86 pCi/L 37% of the EPA limit 5 pCi/L worst single sample: 2 pCi/L	5/5	SYR4	2014
Combined Uranium	0.8260 µg/L 2.8% of the EPA limit 30 µg/L worst single sample: 0.9100 µg/L	5/5	SYR4	2014
Dibromoacetic Acid	1.876 µg/L No EPA limit set worst single sample: 2.1 µg/L	5/7	SYR4	2013–2019
TTHM	6.68 µg/L 8.4% of the EPA limit 80 µg/L worst single sample: 7.5 µg/L	5/7	SYR4	2013–2019
Total Haloacetic Acids (HAA5)	2.082 µg/L 3.5% of the EPA limit 60 µg/L worst single sample: 2.1 µg/L	5/7	SYR4	2013–2019
Chromium	1.38 µg/L 1.4% of the EPA limit 100 µg/L worst single sample: 1.4 µg/L	3/15	SYR4	2012–2019
Gross Alpha, Excl. Radon And U	0.7390 pCi/L 4.9% of the EPA limit 15 pCi/L worst single sample: 0.7533 pCi/L	3/3	SYR4	2014
Dichloroacetic Acid	0.8270 µg/L No EPA limit set worst single sample: 0.8500 µg/L	2/7	SYR4	2013–2019
Trichloroethylene	7.26 µg/L 145% of the EPA limit, at the 95th percentile of samples — 5 µg/L worst single sample: 7.3 µg/L	2/49	SYR4	2012–2019
Nitrite	20 µg/L 2% of the EPA limit 1000 µg/L	1/14	SYR4	2012–2019

60 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, TotalArsenicAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneChloroformDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroacetic AcidVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

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Frequently asked questions about Hartland Waterworks

Is Hartland Waterworks tap water safe to drink?

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

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

How many people does Hartland Waterworks serve?

Hartland Waterworks reports serving 9,212 people in Wisconsin, per its EPA record.

Has Hartland Waterworks had any water quality violations?

The EPA has 16 violations on file for Hartland Waterworks, of which 9 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.