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Tap water quality report

Rock River Leisure Estates Coop

EPA monitoring tested this supplier for 68 contaminants and detected 9. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

68
contaminants tested
9
detected
650
people served
5
health-based violations
Wisconsin rankingsLead in WisconsinPFAS in Wisconsin
Water source
Ground water
Ownership
Private
Counties served
Rock

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.

5
health-based violations
24
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2003-09-01 → 2003-09-30
MCL Health-based Resolved 2003-09-01 → 2003-09-30
MCL Health-based Resolved 2003-09-01 → 2003-09-30
MCL Health-based Resolved 2003-09-01 → 2003-09-30
MCL Health-based Resolved 2003-09-01 → 2003-09-30
RPT Monitoring Resolved 2025-07-02
Other Monitoring Resolved 2023-07-01
Other Monitoring Resolved 2023-07-01
Other Monitoring Resolved 2023-07-01
Other Monitoring Resolved 2023-07-01

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.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Copper
162.7 µg/L 13%
of the EPA limit 1300 µg/L
worst single sample: 253 µg/L
15/15 SYR4 2012–2018
Nitrate
1500 µg/L 15%
of the EPA limit 10000 µg/L
 12/24 SYR4 2013–2019
Lead
0.0101 mg/L 67%
of the EPA limit 0.0150 mg/L
 9/9 LCR 2024
Lead
3.365 µg/L 22%
of the EPA limit 15 µg/L
worst single sample: 4.1 µg/L
8/15 SYR4 2012–2018
Barium
15 µg/L 0.8%
of the EPA limit 2000 µg/L
 5/6 SYR4 2012–2018
Fluoride
195.5 µg/L 4.9%
of the EPA limit 4000 µg/L
worst single sample: 200 µg/L
4/6 SYR4 2012–2018
Nitrate-Nitrite
1500 µg/L 15%
of the EPA limit 10000 µg/L
 3/6 SYR4 2012–2018
Combined Radium (-226 And -228)
1.82875 pCi/L 37%
of the EPA limit 5 pCi/L
worst single sample: 1.834 pCi/L
2/2 SYR4 2015–2018
Gross Alpha, Excl. Radon And U
3.909 pCi/L 26%
of the EPA limit 15 pCi/L
worst single sample: 4.03 pCi/L
2/2 SYR4 2015–2018
59 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, TotalBromodichloromethaneBromoformChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneChloroformChromiumDichloromethaneDalaponDi(2-ethylhexyl) PhthalateDibromochloromethaneDinosebDiquatEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Frequently asked questions about Rock River Leisure Estates Coop

Is Rock River Leisure Estates Coop tap water safe to drink?

EPA monitoring detected 9 contaminants in Rock River Leisure Estates Coop'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 Rock River Leisure Estates Coop's water?

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

How many people does Rock River Leisure Estates Coop serve?

Rock River Leisure Estates Coop reports serving 650 people in Wisconsin, per its EPA record.

Has Rock River Leisure Estates Coop had any water quality violations?

The EPA has 24 violations on file for Rock River Leisure Estates Coop, of which 5 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.