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TAN OAK APTS

PWS ID: WI2301080 · BROOKFIELD, Wisconsin 53005

TAN OAK APTS serves 325 people in BROOKFIELD, Wisconsin using Groundwater water sources. It has 603 recorded EPA violations, including 26 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: TAN OAK APTS

TAN OAK APTS is a private-owned community water system that delivers drinking water to 325 residents in BROOKFIELD, Wisconsin (Kenosha County) through 5 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 603 total violations for this system , of which 26 (4%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 563 monitoring and reporting violations are on file. The most recent violation on record dates to 2024.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 42 violations (MR). 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. TAN OAK APTS's 603 violations sit above the Wisconsin average. Statewide, 78 of 202 UCMR5-tested systems have reported PFAS detections (38.6%). 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
325
Total Violations
603
Health-Based Violations
26
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
5
County
Kenosha
School/Daycare
No
MCL Violations
25
Monitoring Violations
563
Treatment Tech Violations
1

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 42 2010
Coliform (TCR) MCL 25 2012
Lead and Copper Rule MR 25 2012
Beryllium, Total MR 15 2000
Antimony, Total MR 15 2000
Nickel MR 15 2000
Thallium, Total MR 15 2000
1,2,4-Trichlorobenzene MR 13 1999
Xylenes, Total MR 13 1999
DICHLOROMETHANE MR 13 1999
o-Dichlorobenzene MR 13 1999
p-Dichlorobenzene MR 13 1999
trans-1,2-Dichloroethylene MR 13 1999
1,1,1-Trichloroethane MR 13 1999
1,2-Dichloropropane MR 13 1999
Trichloroethylene MR 13 1999
1,1,2-Trichloroethane MR 13 1999
Tetrachloroethylene MR 13 1999
CHLOROBENZENE MR 13 1999
Vinyl chloride MR 13 1999
1,1-Dichloroethylene MR 13 1999
1,2-Dichloroethane MR 13 1999
Carbon tetrachloride MR 13 1999
Ethylbenzene MR 13 1999
cis-1,2-Dichloroethylene MR 13 1999
Styrene MR 13 1999
Benzene MR 13 1999
Toluene MR 13 1999
Public Notice Other 7 2024
Consumer Confidence Rule Other 6 2010

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 TAN OAK APTS.

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 WI2301080 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 TAN OAK APTS 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
2024 Public Notice Other 7 SDWIS / WI2301080 / 7500
2024 LEAD AND COPPER RULE REVISIONS RPT 1 SDWIS / WI2301080 / 5200
2024 LEAD AND COPPER RULE REVISIONS TT 1 SDWIS / WI2301080 / 5200
2012 Coliform (TCR) MCL 25 SDWIS / WI2301080 / 3100
2012 Lead and Copper Rule MR 25 SDWIS / WI2301080 / 5000
2010 Coliform (TCR) MR 42 SDWIS / WI2301080 / 3100
2010 Consumer Confidence Rule Other 6 SDWIS / WI2301080 / 7000
2007 Combined Uranium MR 5 SDWIS / WI2301080 / 4006
2007 Gross Alpha, Excl. Radon and U MR 5 SDWIS / WI2301080 / 4000
2007 Radium-226 MR 5 SDWIS / WI2301080 / 4020
2007 Combined Radium (-226 and -228) MR 5 SDWIS / WI2301080 / 4010
2007 Radium-228 MR 5 SDWIS / WI2301080 / 4030
2000 Beryllium, Total MR 15 SDWIS / WI2301080 / 1075
2000 Antimony, Total MR 15 SDWIS / WI2301080 / 1074
2000 Nickel MR 15 SDWIS / WI2301080 / 1036

How TAN OAK APTS Compares

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

Metric TAN OAK APTS Wisconsin avg Federal benchmark
Total violations 603 26 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 26 5.3 Indicates a contaminant exceeded a federal MCL
PFAS detection None 38.6% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 325 467 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
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is TAN OAK APTS water safe to drink? ▼
TAN OAK APTS (PWS ID: WI2301080) has 603 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 325 people using Groundwater sources.
How many people does TAN OAK APTS serve? ▼
TAN OAK APTS serves 325 people in BROOKFIELD, Wisconsin. It is a Private-owned system using Groundwater water sources with 5 service connections.
What type of violations does TAN OAK APTS have? ▼
TAN OAK APTS has 603 total violations: 26 health-based violations (MCL exceedances or treatment failures), 563 monitoring/reporting violations, and 1 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in TAN OAK APTS water? ▼
No PFAS testing data is available for TAN OAK APTS under the EPA's UCMR5 monitoring program.
What water source does TAN OAK APTS use? ▼
TAN OAK APTS uses Groundwater as its primary water source. It is classified as a Community Water System (CWS), serving residential populations year-round.
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.

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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.

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