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Tap water quality report

Mequon on the Square Condominium Owners Association Inc

EPA monitoring tested this supplier for 69 contaminants and detected 10. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

69
contaminants tested
10
detected
110
people served
22
health-based violations
Wisconsin rankingsLead in WisconsinPFAS in Wisconsin
Water source
Ground water
Ownership
Private
Counties served
Ozaukee

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.

22
health-based violations
409
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2003-08-01 → 2003-08-31
MCL Health-based Resolved 2003-08-01 → 2003-08-31
MCL Health-based Resolved 2003-08-01 → 2003-08-31
MCL Health-based Resolved 2003-08-01 → 2003-08-31
MCL Health-based Resolved 2003-08-01 → 2003-08-31
MCL Health-based Resolved 2003-07-01 → 2003-07-31
MCL Health-based Resolved 2003-07-01 → 2003-07-31
MCL Health-based Resolved 2003-07-01 → 2003-07-31
MCL Health-based Resolved 2003-07-01 → 2003-07-31
MCL Health-based Resolved 1998-05-01 → 1998-05-31

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.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Lead
0.00050 mg/L 3.3%
of the EPA limit 0.0150 mg/L
 16/16 LCR 2024
Copper
314.3 µg/L 24%
of the EPA limit 1300 µg/L
worst single sample: 413 µg/L
15/15 SYR4 2012–2018
Lead
0.4133 µg/L 2.8%
of the EPA limit 15 µg/L
worst single sample: 0.4210 µg/L
4/15 SYR4 2012–2018
Nitrate
250 µg/L 2.5%
of the EPA limit 10000 µg/L
 4/10 SYR4 2013–2019
Arsenic
7.37 µg/L 74%
of the EPA limit 10 µg/L
worst single sample: 7.4 µg/L
3/3 SYR4 2012–2018
Barium
108.77 µg/L 5.4%
of the EPA limit 2000 µg/L
worst single sample: 110 µg/L
3/3 SYR4 2012–2018
Fluoride
649 µg/L 16%
of the EPA limit 4000 µg/L
worst single sample: 650 µg/L
2/3 SYR4 2012–2018
Chromium
1.95 µg/L 2%
of the EPA limit 100 µg/L
 1/3 SYR4 2012–2018
Combined Radium (-226 And -228)
3.07 pCi/L 61%
of the EPA limit 5 pCi/L
 1/1 SYR4 2015
Gross Alpha, Excl. Radon And U
2.3 pCi/L 15%
of the EPA limit 15 pCi/L
 1/1 SYR4 2015
59 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, TotalAtrazineBhc-GammaBenzeneBeryllium, TotalBromodichloromethaneBromoformChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneChloroformDichloromethaneDalaponDibromochloromethaneDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNitrate-NitriteNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Frequently asked questions about Mequon on the Square Condominium Owners Association Inc

Is Mequon on the Square Condominium Owners Association Inc tap water safe to drink?

EPA monitoring detected 10 contaminants in Mequon on the Square Condominium Owners Association Inc'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 Mequon on the Square Condominium Owners Association Inc's water?

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

How many people does Mequon on the Square Condominium Owners Association Inc serve?

Mequon on the Square Condominium Owners Association Inc reports serving 110 people in Wisconsin, per its EPA record.

Has Mequon on the Square Condominium Owners Association Inc had any water quality violations?

The EPA has 409 violations on file for Mequon on the Square Condominium Owners Association Inc, of which 22 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.