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Transient Non-Community Water System · PWS WI2460946

Dp Properties

Mequon, Wisconsin 53092 - drinking water served from groundwater sources to 65 people, tracked in EPA SDWIS and UCMR5.

65
People served
528
EPA violations
0
Health-based
Untested
UCMR5 result

The verdict

EPA records 528 drinking-water violations at Dp Properties - above the Wisconsin per-system average.

528
Total EPA violations on record
0%
Health-based (MCL / treatment failure)
65
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Dp Properties

Dp Properties is a private-owned transient non-community water system that delivers drinking water to 65 residents in Mequon, Wisconsin (Ozaukee County) through 1 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 528 total violations for this system , of which 0 (0%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 527 monitoring and reporting violations are on file. The most recent violation on record dates to 2004.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 24 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. Statewide, 51 of 202 UCMR5-tested systems have reported PFAS detections (25.2%).

Dp Properties's 528 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
65
Total Violations
528
Health-Based Violations
0
Water Source
Groundwater

System Details

System Type
Transient Non-Community
Owner Type
Private
Connections
1
County
Ozaukee
School/Daycare
No
MCL Violations
0
Monitoring Violations
527
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 24 2000
1,2,4-Trichlorobenzene MR 21 1996
o-Dichlorobenzene MR 21 1996
Benzene MR 21 1996
Styrene MR 21 1996
cis-1,2-Dichloroethylene MR 21 1996
Xylenes, Total MR 21 1996
1,1-Dichloroethylene MR 21 1996
Vinyl chloride MR 21 1996
Trichloroethylene MR 21 1996
1,2-Dichloropropane MR 21 1996
Carbon tetrachloride MR 21 1996
1,2-Dichloroethane MR 21 1996
trans-1,2-Dichloroethylene MR 21 1996
Ethylbenzene MR 21 1996
DICHLOROMETHANE MR 21 1996
p-Dichlorobenzene MR 21 1996
Tetrachloroethylene MR 21 1996
1,1,1-Trichloroethane MR 21 1996
Toluene MR 21 1996
CHLOROBENZENE MR 21 1996
1,1,2-Trichloroethane MR 21 1996
Nitrate MR 14 2004
OXAMYL MR 2 1995
Simazine MR 2 1995
Dinoseb MR 2 1995
BHC-GAMMA MR 2 1995
Endrin MR 2 1995
Carbofuran MR 2 1995
LASSO MR 2 1995

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 Dp Properties.

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 WI2460946 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 Dp Properties 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
2004 Nitrate MR 14 SDWIS / WI2460946 / 1040
2004 Public Notice Other 1 SDWIS / WI2460946 / 7500
2000 Coliform (TCR) MR 24 SDWIS / WI2460946 / 3100
1996 1,2,4-Trichlorobenzene MR 21 SDWIS / WI2460946 / 2378
1996 o-Dichlorobenzene MR 21 SDWIS / WI2460946 / 2968
1996 Benzene MR 21 SDWIS / WI2460946 / 2990
1996 Styrene MR 21 SDWIS / WI2460946 / 2996
1996 cis-1,2-Dichloroethylene MR 21 SDWIS / WI2460946 / 2380
1996 Xylenes, Total MR 21 SDWIS / WI2460946 / 2955
1996 1,1-Dichloroethylene MR 21 SDWIS / WI2460946 / 2977
1996 Vinyl chloride MR 21 SDWIS / WI2460946 / 2976
1996 Trichloroethylene MR 21 SDWIS / WI2460946 / 2984
1996 1,2-Dichloropropane MR 21 SDWIS / WI2460946 / 2983
1996 Carbon tetrachloride MR 21 SDWIS / WI2460946 / 2982
1996 1,2-Dichloroethane MR 21 SDWIS / WI2460946 / 2980

How Dp Properties Compares

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

Metric Dp Properties Wisconsin avg Federal benchmark
Total violations 528 26 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 0 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 65 467 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 Dp Properties water safe to drink? ▼
Dp Properties (PWS ID: WI2460946) has 528 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 65 people using Groundwater sources.
How many people does Dp Properties serve? ▼
Dp Properties serves 65 people in Mequon, Wisconsin. It is a Private-owned system using Groundwater water sources with 1 service connections.
What type of violations does Dp Properties have? ▼
Dp Properties has 528 total violations: 0 health-based violations (MCL exceedances or treatment failures), 527 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Dp Properties water? ▼
No PFAS testing data is available for Dp Properties under the EPA's UCMR5 monitoring program.
What water source does Dp Properties use? ▼
Dp Properties uses Groundwater as its primary water source. It is classified as a Transient Non-Community Water System, serving transient populations.
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.