Tap WaterIndex

← Wisconsin

Tap water quality report

Sanctuary of Delafield

EPA monitoring tested this supplier for 64 contaminants and detected 12. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

64
contaminants tested
12
detected
27
people served
5
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.

5
health-based violations
9
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2024-06-01 → 2024-06-30
MCL Health-based Resolved 2024-06-01 → 2024-06-30
MCL Health-based Resolved 2024-06-01 → 2024-06-30
MCL Health-based Resolved 2024-06-01 → 2024-06-30
MCL Health-based Resolved 2024-06-01 → 2024-06-30
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
46.2 µg/L 3.6%
of the EPA limit 1300 µg/L
worst single sample: 48 µg/L
19/20 SYR4 2016–2019
Lead
1.4265 µg/L 9.5%
of the EPA limit 15 µg/L
worst single sample: 2.4 µg/L
12/21 SYR4 2016–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 7/7 LCR 2024
Combined Radium (-226 And -228)
1.932 pCi/L 39%
of the EPA limit 5 pCi/L
worst single sample: 1.98 pCi/L
4/4 SYR4 2016–2017
Gross Alpha, Excl. Radon And U
2.93317 pCi/L 20%
of the EPA limit 15 pCi/L
worst single sample: 3.01667 pCi/L
4/4 SYR4 2016–2017
Barium
179 µg/L 9%
of the EPA limit 2000 µg/L
worst single sample: 180 µg/L
2/2 SYR4 2016–2018
Fluoride
319 µg/L 8%
of the EPA limit 4000 µg/L
worst single sample: 320 µg/L
2/2 SYR4 2016–2018
Nitrate
60 µg/L 0.6%
of the EPA limit 10000 µg/L
 2/6 SYR4 2016–2019
Antimony, Total
1.1 µg/L 18%
of the EPA limit 6 µg/L
 1/2 SYR4 2016–2018
Arsenic
6.6 µg/L 66%
of the EPA limit 10 µg/L
 1/2 SYR4 2016–2018
Combined Uranium
0.2300 µg/L 0.8%
of the EPA limit 30 µg/L
 1/1 SYR4 2016
Nitrate-Nitrite
110 µg/L 1.1%
of the EPA limit 10000 µg/L
 1/1 SYR4 2018
52 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-Dichloropropane2,4,5-TP2,4-DAtrazineBhc-GammaBenzeneBeryllium, TotalChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDinosebDiquatEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Frequently asked questions about Sanctuary of Delafield

Is Sanctuary of Delafield tap water safe to drink?

EPA monitoring detected 12 contaminants in Sanctuary of Delafield'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 Sanctuary of Delafield's water?

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

How many people does Sanctuary of Delafield serve?

Sanctuary of Delafield reports serving 27 people in Wisconsin, per its EPA record.

Has Sanctuary of Delafield had any water quality violations?

The EPA has 9 violations on file for Sanctuary of Delafield, 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.