Is Wyocena Waterworks Tap Water Safe? Quality Report

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

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	2009-08-01 → 2009-08-31
MCL	Health-based	Resolved	2009-08-01 → 2009-08-31
MCL	Health-based	Resolved	2009-08-01 → 2009-08-31
MCL	Health-based	Resolved	2009-08-01 → 2009-08-31
MCL	Health-based	Resolved	1995-07-01 → 1995-07-31
MCL	Health-based	Resolved	1995-07-01 → 1995-07-31
MCL	Health-based	Resolved	1995-07-01 → 1995-07-31
MCL	Health-based	Resolved	1995-07-01 → 1995-07-31
MCL	Health-based	Resolved	1994-09-01 → 1994-09-30
MCL	Health-based	Resolved	1994-09-01 → 1994-09-30

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
Nitrate	6900 µg/L 69% of the EPA limit 10000 µg/L worst single sample: 7300 µg/L	132/132	SYR4	2012–2019
Copper	219 µg/L 17% of the EPA limit 1300 µg/L worst single sample: 312 µg/L	71/73	SYR4	2014–2019
Lead	20.32 µg/L 135% of the EPA limit, at the 95th percentile of samples — 15 µg/L worst single sample: 42.4 µg/L	37/73	SYR4	2014–2019
Lead	0.0027 mg/L 18% of the EPA limit 0.0150 mg/L	17/17	LCR	2023
Chloroform	3.08 µg/L No EPA limit set worst single sample: 3.2 µg/L	9/20	SYR4	2012–2019
TTHM	7.2645 µg/L 9.1% of the EPA limit 80 µg/L worst single sample: 7.52 µg/L	8/8	SYR4	2013–2019
Total Haloacetic Acids (HAA5)	2.5715 µg/L 4.3% of the EPA limit 60 µg/L worst single sample: 2.68 µg/L	8/8	SYR4	2013–2019
Bromodichloromethane	2.18 µg/L No EPA limit set worst single sample: 2.3 µg/L	7/20	SYR4	2012–2019
Dibromoacetic Acid	0.6700 µg/L No EPA limit set	7/8	SYR4	2013–2019
Barium	14.575 µg/L 0.7% of the EPA limit 2000 µg/L worst single sample: 14.8 µg/L	4/4	SYR4	2014–2017
Dibromochloromethane	1.47 µg/L No EPA limit set worst single sample: 1.5 µg/L	4/20	SYR4	2012–2019
Dichloroacetic Acid	1.725 µg/L No EPA limit set worst single sample: 1.8 µg/L	4/8	SYR4	2013–2019
Combined Radium (-226 And -228)	1.931 pCi/L 39% of the EPA limit 5 pCi/L worst single sample: 1.99 pCi/L	2/2	SYR4	2014
Nitrate-Nitrite	5760 µg/L 58% of the EPA limit 10000 µg/L worst single sample: 5800 µg/L	2/2	SYR4	2017
Cadmium	6.2 µg/L 124% of the EPA limit, at the 95th percentile of samples — 5 µg/L	1/13	SYR4	2014–2017
Gross Beta Particle Activity	4.3 pCi/L No EPA limit set	1/1	SYR4	2014

60 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, TotalBromoformChlorobenzeneCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEndothallEndrinEthylbenzeneFluorideGlyphosateHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroacetic AcidTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

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Frequently asked questions about Wyocena Waterworks

Is Wyocena Waterworks tap water safe to drink?

EPA monitoring detected 16 contaminants in Wyocena 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 Wyocena Waterworks's water?

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

How many people does Wyocena Waterworks serve?

Wyocena Waterworks reports serving 768 people in Wisconsin, per its EPA record.

Has Wyocena Waterworks had any water quality violations?

The EPA has 18 violations on file for Wyocena Waterworks, of which 13 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.