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Non-Transient Non-Community Water System · PWS WI2680504

Sendiks

Milwaukee, Wisconsin 53223 - drinking water served from groundwater sources to 310 people, tracked in EPA SDWIS and UCMR5.

310
People served
139
EPA violations
27
Health-based
Untested
UCMR5 result

The verdict

EPA records 139 drinking-water violations at Sendiks, 19% of them health-based - above the Wisconsin per-system average.

139
Total EPA violations on record
19%
Health-based (MCL / treatment failure)
310
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Sendiks

Sendiks is a private-owned non-transient non-community water system that delivers drinking water to 310 residents in Milwaukee, Wisconsin (Waukesha County) through 1 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 139 total violations for this system , of which 27 (19%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 108 monitoring and reporting violations are on file. The most recent violation on record dates to 2012.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 24 violations (MCL, health-based). This system has not yet been sampled under EPA's UCMR5 PFAS monitoring program, so no PFAS detection data is available here.

Across Wisconsin, EPA tracks 10,988 public water systems serving 5,131,439 people, with 285,161 cumulative violations and 58,688 health-based violations on record. About 72% of systems in the state carry at least one violation, and state-wide the average per system is 26 violations. Statewide, 51 of 202 UCMR5-tested systems have reported PFAS detections (25.2%).

Sendiks's 139 violations sit above the Wisconsin average.

All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.

Population Served
310
Total Violations
139
Health-Based Violations
27
Water Source
Groundwater

System Details

System Type
Non-Transient Non-Community
Owner Type
Private
Connections
1
County
Waukesha
School/Daycare
No
MCL Violations
27
Monitoring Violations
108
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MCL 24 2012
Coliform (TCR) MR 18 2005
Lead and Copper Rule MR 6 2012
1,2,4-Trichlorobenzene MR 4 2003
cis-1,2-Dichloroethylene MR 4 2003
DICHLOROMETHANE MR 4 2003
p-Dichlorobenzene MR 4 2003
1,1-Dichloroethylene MR 4 2003
trans-1,2-Dichloroethylene MR 4 2003
1,1,1-Trichloroethane MR 4 2003
Carbon tetrachloride MR 4 2003
1,2-Dichloropropane MR 4 2003
1,1,2-Trichloroethane MR 4 2003
Tetrachloroethylene MR 4 2003
o-Dichlorobenzene MR 4 2003
Toluene MR 4 2003
Trichloroethylene MR 4 2003
Styrene MR 4 2003
Ethylbenzene MR 4 2003
1,2-Dichloroethane MR 4 2003
CHLOROBENZENE MR 4 2003
Xylenes, Total MR 4 2003
Vinyl chloride MR 4 2003
Benzene MR 4 2003
Public Notice Other 3 2003
Vinyl chloride MCL 3 1992

Verify This Water System

The figures above are aggregated from EPA's public databases. To verify the underlying records, or to file a complaint, request a Consumer Confidence Report, or check current monitoring status, go directly to the federal and state regulators that enforce the Safe Drinking Water Act for Sendiks.

Federal Source of Truth

EPA SDWIS, Federal Reports

EPA's Safe Drinking Water Information System (SDWIS) holds the federal compliance record for every regulated public water system. Open the system-level report by PWS ID:

View PWS ID WI2680504 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Wisconsin Drinking Water Authority

Wisconsin DNR, Drinking Water and Groundwater is the primacy agency that licenses and inspects Sendiks under EPA-delegated authority.

Open WI regulator portal

Source: Wisconsin DNR, Drinking Water and Groundwater

Violation Timeline

Each row links to the EPA SDWIS public record for verification. Cross-reference the contaminant code on EPA's federal report to see violation dates, return-to-compliance status, and enforcement actions.

Year (latest) Contaminant Category Count EPA Record
2012 Coliform (TCR) MCL 24 SDWIS / WI2680504 / 3100
2012 Lead and Copper Rule MR 6 SDWIS / WI2680504 / 5000
2005 Coliform (TCR) MR 18 SDWIS / WI2680504 / 3100
2003 1,2,4-Trichlorobenzene MR 4 SDWIS / WI2680504 / 2378
2003 cis-1,2-Dichloroethylene MR 4 SDWIS / WI2680504 / 2380
2003 DICHLOROMETHANE MR 4 SDWIS / WI2680504 / 2964
2003 p-Dichlorobenzene MR 4 SDWIS / WI2680504 / 2969
2003 1,1-Dichloroethylene MR 4 SDWIS / WI2680504 / 2977
2003 trans-1,2-Dichloroethylene MR 4 SDWIS / WI2680504 / 2979
2003 1,1,1-Trichloroethane MR 4 SDWIS / WI2680504 / 2981
2003 Carbon tetrachloride MR 4 SDWIS / WI2680504 / 2982
2003 1,2-Dichloropropane MR 4 SDWIS / WI2680504 / 2983
2003 1,1,2-Trichloroethane MR 4 SDWIS / WI2680504 / 2985
2003 Tetrachloroethylene MR 4 SDWIS / WI2680504 / 2987
2003 o-Dichlorobenzene MR 4 SDWIS / WI2680504 / 2968

How Sendiks Compares

Cross-reference this system's record against state averages and the federal MCL framework for context.

Metric Sendiks Wisconsin avg Federal benchmark
Total violations 139 26 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 27 5.3 Indicates a contaminant exceeded a federal MCL
PFAS detection None 25.2% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 310 467 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 10,988 regulated public water systems in Wisconsin.

Federal MCL reference, Safe Drinking Water Act thresholds ▼
Contaminant Federal MCL / Action Level Note
Lead 0 mg/L (Action Level: 0.015 mg/L) Lead and Copper Rule treatment technique
Arsenic 0.010 mg/L (10 ppb) Health-based MCL since 2006
Total Coliform Treatment technique (RTCR) Indicator organism, monitoring trigger
PFOA / PFOS (PFAS) 4.0 ppt each (final 2024 rule) Compliance deadline 2029 (EPA proposed extending to 2031, not yet final as of May 2026)
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is Sendiks water safe to drink? ▼
Sendiks (PWS ID: WI2680504) has 139 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 310 people using Groundwater sources.
How many people does Sendiks serve? ▼
Sendiks serves 310 people in Milwaukee, Wisconsin. It is a Private-owned system using Groundwater water sources with 1 service connections.
What type of violations does Sendiks have? ▼
Sendiks has 139 total violations: 27 health-based violations (MCL exceedances or treatment failures), 108 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Sendiks water? ▼
No PFAS testing data is available for Sendiks under the EPA's UCMR5 monitoring program.
What water source does Sendiks use? ▼
Sendiks uses Groundwater as its primary water source. It is classified as a Non-Transient Non-Community Water System, serving the same people for at least 6 months per year.
Where does this data come from? ▼
All data comes from the EPA Safe Drinking Water Information System (SDWIS) and the UCMR5 PFAS monitoring program. SDWIS tracks compliance for all public water systems regulated under the Safe Drinking Water Act.
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025. This data is provided for informational purposes only.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater Editorial

Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. This system's figures are rendered directly from EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.