Is Hartford Waterworks Tap Water Safe? Quality Report

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

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

258

violations on file

still open

Violation	Type	Status	Period
MCL	Health-based	Resolved	2005-07-01 → 2009-09-29
MCL	Health-based	Resolved	2005-07-01 → 2009-09-29
MCL	Health-based	Resolved	2005-07-01 → 2009-09-29
MCL	Health-based	Resolved	2005-07-01 → 2009-09-29
MCL	Health-based	Resolved	2005-07-01 → 2009-09-29
MCL	Health-based	Resolved	2005-07-01 → 2009-09-29
MCL	Health-based	Archived	1988-10-01 → 1989-09-30
Other	Monitoring	Resolved	2002-07-01
Other	Monitoring	Resolved	2002-07-01
Other	Monitoring	Resolved	2002-07-01

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
Fluoride	1106 µg/L 28% of the EPA limit 4000 µg/L worst single sample: 1190 µg/L	98/202	SYR4	2012–2019
Copper	1020 µg/L 78% of the EPA limit 1300 µg/L worst single sample: 1500 µg/L	60/60	SYR4	2014–2017
Lead	13.3 µg/L 89% of the EPA limit 15 µg/L worst single sample: 71 µg/L	59/60	SYR4	2014–2017
Nitrate	3630 µg/L 36% of the EPA limit 10000 µg/L worst single sample: 3980 µg/L	46/60	SYR4	2012–2019
TTHM	19.148 µg/L 24% of the EPA limit 80 µg/L worst single sample: 19.42 µg/L	18/18	SYR4	2012–2019
Total Haloacetic Acids (HAA5)	9.0105 µg/L 15% of the EPA limit 60 µg/L worst single sample: 10.43 µg/L	18/18	SYR4	2012–2019
Dibromoacetic Acid	0.8675 µg/L No EPA limit set worst single sample: 0.9500 µg/L	16/18	SYR4	2012–2019
Dibromochloromethane	2.425 µg/L No EPA limit set worst single sample: 2.5 µg/L	16/38	SYR4	2012–2019
Bromodichloromethane	5.86 µg/L No EPA limit set worst single sample: 6 µg/L	15/38	SYR4	2012–2019
Lead	0.00086 mg/L 5.7% of the EPA limit 0.0150 mg/L	15/15	LCR	2023
Chloroform	11 µg/L No EPA limit set	13/38	SYR4	2012–2019
Barium	73.55 µg/L 3.7% of the EPA limit 2000 µg/L worst single sample: 74 µg/L	10/10	SYR4	2014–2017
Dichloroacetic Acid	4.94 µg/L No EPA limit set worst single sample: 5.3 µg/L	10/18	SYR4	2012–2019
Trichloroacetic Acid	4.26 µg/L No EPA limit set worst single sample: 4.5 µg/L	9/18	SYR4	2012–2019
Nitrate-Nitrite	3090 µg/L 31% of the EPA limit 10000 µg/L worst single sample: 3300 µg/L	8/10	SYR4	2014–2017
Combined Radium (-226 And -228)	1.18 pCi/L 24% of the EPA limit 5 pCi/L worst single sample: 1.2 pCi/L	5/5	SYR4	2014
Monobromoacetic Acid	0.3540 µg/L No EPA limit set worst single sample: 0.3700 µg/L	3/18	SYR4	2012–2019
Bromoform	0.5940 µg/L No EPA limit set worst single sample: 0.6000 µg/L	2/38	SYR4	2012–2019

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

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Frequently asked questions about Hartford Waterworks

Is Hartford Waterworks tap water safe to drink?

EPA monitoring detected 18 contaminants in Hartford 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 Hartford Waterworks's water?

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

How many people does Hartford Waterworks serve?

Hartford Waterworks reports serving 15,805 people in Wisconsin, per its EPA record.

Has Hartford Waterworks had any water quality violations?

The EPA has 258 violations on file for Hartford Waterworks, 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.