Non-Transient Non-Community Water System · PWS WI2461534

Daystar Properties

Oconomowoc, Wisconsin 53066 - drinking water served from groundwater sources to 80 people, tracked in EPA SDWIS and UCMR5.

Compiled by PlainWater Editorial, Drinking Water Quality Editorial Team · May 15, 2026

80
People served: 100
EPA violations: 0
Health-based: Untested
UCMR5 result

The verdict

EPA records 100 drinking-water violations at Daystar Properties - above the Wisconsin per-system average.

100
Total EPA violations on record: 0%
Health-based (MCL / treatment failure): 80
People served by this system: N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Daystar Properties

Daystar Properties is a private-owned non-transient non-community water system that delivers drinking water to 80 residents in Oconomowoc, Wisconsin (Ozaukee County) through 1 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 100 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 100 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 Lead and Copper Rule, recorded in 6 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%).

Daystar Properties's 100 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

Total Violations

100

Health-Based Violations

Water Source

Groundwater

System Details

System Type: Non-Transient Non-Community
Owner Type: Private
Connections: 1
County: Ozaukee
School/Daycare: No
MCL Violations: 0
Monitoring Violations: 100
Treatment Tech Violations: 0

Violation History

Contaminant violations recorded by EPA.

Contaminant	Category	Count	Latest
Lead and Copper Rule	MR	6	2024
Coliform (TCR)	MR	5	2010
Revised Total Coliform Rule	MON	5	2017
1,2,4-Trichlorobenzene	MR	4	2004
DICHLOROMETHANE	MR	4	2004
Vinyl chloride	MR	4	2004
1,1-Dichloroethylene	MR	4	2004
1,2-Dichloroethane	MR	4	2004
1,1,1-Trichloroethane	MR	4	2004
Carbon tetrachloride	MR	4	2004
1,2-Dichloropropane	MR	4	2004
CHLOROBENZENE	MR	4	2004
Benzene	MR	4	2004
Ethylbenzene	MR	4	2004
Trichloroethylene	MR	4	2004
Styrene	MR	4	2004
1,1,2-Trichloroethane	MR	4	2004
Xylenes, Total	MR	4	2004
p-Dichlorobenzene	MR	4	2004
cis-1,2-Dichloroethylene	MR	4	2004
o-Dichlorobenzene	MR	4	2004
Tetrachloroethylene	MR	4	2004
Toluene	MR	4	2004
trans-1,2-Dichloroethylene	MR	4	2004

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 Daystar 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 WI2461534 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 Daystar 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
2024	Lead and Copper Rule	MR	6	SDWIS / WI2461534 / 5000
2017	Revised Total Coliform Rule	MON	5	SDWIS / WI2461534 / 8000
2010	Coliform (TCR)	MR	5	SDWIS / WI2461534 / 3100
2004	1,2,4-Trichlorobenzene	MR	4	SDWIS / WI2461534 / 2378
2004	DICHLOROMETHANE	MR	4	SDWIS / WI2461534 / 2964
2004	Vinyl chloride	MR	4	SDWIS / WI2461534 / 2976
2004	1,1-Dichloroethylene	MR	4	SDWIS / WI2461534 / 2977
2004	1,2-Dichloroethane	MR	4	SDWIS / WI2461534 / 2980
2004	1,1,1-Trichloroethane	MR	4	SDWIS / WI2461534 / 2981
2004	Carbon tetrachloride	MR	4	SDWIS / WI2461534 / 2982
2004	1,2-Dichloropropane	MR	4	SDWIS / WI2461534 / 2983
2004	CHLOROBENZENE	MR	4	SDWIS / WI2461534 / 2989
2004	Benzene	MR	4	SDWIS / WI2461534 / 2990
2004	Ethylbenzene	MR	4	SDWIS / WI2461534 / 2992
2004	Trichloroethylene	MR	4	SDWIS / WI2461534 / 2984

How Daystar Properties Compares

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

Metric	Daystar Properties	Wisconsin avg	Federal benchmark
Total violations	100	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	80	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 Daystar Properties water safe to drink? ▼

Daystar Properties (PWS ID: WI2461534) has 100 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 80 people using Groundwater sources.

How many people does Daystar Properties serve? ▼

Daystar Properties serves 80 people in Oconomowoc, Wisconsin. It is a Private-owned system using Groundwater water sources with 1 service connections.

What type of violations does Daystar Properties have? ▼

Daystar Properties has 100 total violations: 0 health-based violations (MCL exceedances or treatment failures), 100 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.

Has PFAS been detected in Daystar Properties water? ▼

No PFAS testing data is available for Daystar Properties under the EPA's UCMR5 monitoring program.

What water source does Daystar Properties use? ▼

Daystar Properties 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.