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Tap water quality report

Delafield Woods 411

EPA monitoring tested this supplier for 63 contaminants and detected 8. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

63
contaminants tested
8
detected
40
people served
0
health-based violations
Wisconsin rankingsLead in WisconsinPFAS in Wisconsin
Water source
Ground water
Ownership
Private
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.

0
health-based violations
28
violations on file
0
still open
ViolationTypeStatusPeriod
MR Monitoring Resolved 2022-05-07
MR Monitoring Resolved 2022-05-07
MR Monitoring Resolved 2022-05-07
MR Monitoring Resolved 2022-05-07
MR Monitoring Resolved 2021-06-01
MR Monitoring Resolved 2021-06-01
MR Monitoring Resolved 2021-06-01
MR Monitoring Resolved 2021-06-01
MON Monitoring Resolved 2020-06-01 → 2020-06-30
MON Monitoring Resolved 2020-06-01 → 2020-06-30

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.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Copper
51.6 µg/L 4%
of the EPA limit 1300 µg/L
worst single sample: 67 µg/L
25/26 SYR4 2013–2018
Lead
3.71 µg/L 25%
of the EPA limit 15 µg/L
worst single sample: 4.7 µg/L
19/26 SYR4 2013–2018
Combined Radium (-226 And -228)
5.3556 pCi/L 107%
of the EPA limit, at the 95th percentile of samples — 5 pCi/L
worst single sample: 5.46 pCi/L
9/9 SYR4 2013–2018
Gross Alpha, Excl. Radon And U
10.56 pCi/L 70%
of the EPA limit 15 pCi/L
worst single sample: 11.5 pCi/L
9/9 SYR4 2013–2018
Lead
0.00016 mg/L 1.1%
of the EPA limit 0.0150 mg/L
 6/6 LCR 2024
Barium
207.09 µg/L 10%
of the EPA limit 2000 µg/L
worst single sample: 230 µg/L
3/3 SYR4 2013–2018
Fluoride
550 µg/L 14%
of the EPA limit 4000 µg/L
worst single sample: 570 µg/L
3/3 SYR4 2013–2018
Toluene
2.343 µg/L 0.2%
of the EPA limit 1000 µg/L
worst single sample: 2.5 µg/L
3/12 SYR4 2013–2018
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 EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNitrateNitrate-NitriteNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Frequently asked questions about Delafield Woods 411

Is Delafield Woods 411 tap water safe to drink?

EPA monitoring detected 8 contaminants in Delafield Woods 411'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 Delafield Woods 411's water?

EPA monitoring detected Copper, Lead, Combined Radium (-226 And -228), Gross Alpha, Excl. Radon And U, Lead, and others. The full list with the level and data source for each is above.

How many people does Delafield Woods 411 serve?

Delafield Woods 411 reports serving 40 people in Wisconsin, per its EPA record.

Has Delafield Woods 411 had any water quality violations?

The EPA has 28 violations on file for Delafield Woods 411, of which 0 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.