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Tap water quality report

Wells St Station 435 East

EPA monitoring tested this supplier for 14 contaminants and detected 8. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

14
contaminants tested
8
detected
25
people served
0
health-based violations
Wisconsin rankingsLead in WisconsinPFAS in Wisconsin
Water source
GWP
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
10
violations on file
0
still open
ViolationTypeStatusPeriod
Other Monitoring Resolved 2023-07-01
Other Monitoring Resolved 2023-07-01
MR Monitoring Resolved 2017-01-01 → 2017-12-31
MR Monitoring Resolved 2017-01-01 → 2017-12-31
MR Monitoring Resolved 2017-01-01 → 2017-12-31
MR Monitoring Resolved 2017-01-01 → 2017-12-31
MR Monitoring Resolved 2017-01-01 → 2017-12-31
MR Monitoring Resolved 2017-01-01 → 2017-12-31
MR Monitoring Resolved 2017-01-01 → 2017-12-31
MR Monitoring Resolved 2017-01-01 → 2017-12-31

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
Copper
63.6 µg/L 4.9%
of the EPA limit 1300 µg/L
worst single sample: 100 µg/L
15/15 SYR4 2016–2018
Lead
0.4825 µg/L 3.2%
of the EPA limit 15 µg/L
worst single sample: 0.5100 µg/L
6/15 SYR4 2016–2018
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 5/5 LCR 2024
Dichloroacetic Acid
1.049 µg/L
No EPA limit set
worst single sample: 1.1 µg/L
3/3 SYR4 2016–2019
TTHM
1.313 µg/L 1.6%
of the EPA limit 80 µg/L
worst single sample: 1.35 µg/L
3/3 SYR4 2016–2019
Total Haloacetic Acids (HAA5)
1.247 µg/L 2.1%
of the EPA limit 60 µg/L
worst single sample: 1.26 µg/L
3/3 SYR4 2016–2019
Dibromoacetic Acid
0.1700 µg/L
No EPA limit set
 1/3 SYR4 2016–2019
Trichloroacetic Acid
0.2500 µg/L
No EPA limit set
 1/3 SYR4 2016–2019
6 contaminants tested, none detected
BromodichloromethaneBromoformChloroformDibromochloromethaneMonobromoacetic AcidMonochloroacetic Acid

Utility contact

Frequently asked questions about Wells St Station 435 East

Is Wells St Station 435 East tap water safe to drink?

EPA monitoring detected 8 contaminants in Wells St Station 435 East'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 Wells St Station 435 East's water?

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

How many people does Wells St Station 435 East serve?

Wells St Station 435 East reports serving 25 people in Wisconsin, per its EPA record.

Has Wells St Station 435 East had any water quality violations?

The EPA has 10 violations on file for Wells St Station 435 East, 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.