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Non-Transient Non-Community Water System · PWS WI7440846

Little Sunshines Learning Center II

Three Lakes, Wisconsin 54562 - drinking water served from groundwater sources to 78 people, tracked in EPA SDWIS and UCMR5.

78
People served
70
EPA violations
7
Health-based
Untested
UCMR5 result

The verdict

EPA records 70 drinking-water violations at Little Sunshines Learning Center II, 10% of them health-based - above the Wisconsin per-system average.

70
Total EPA violations on record
10%
Health-based (MCL / treatment failure)
78
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Little Sunshines Learning Center II

Little Sunshines Learning Center II is a private-owned non-transient non-community water system that delivers drinking water to 78 residents in Three Lakes, Wisconsin (Oneida County) through 1 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 70 total violations for this system , of which 7 (10%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 56 monitoring and reporting violations are on file. The most recent violation on record dates to 2019.

The most frequently cited contaminant at this system is Lead and Copper Rule, recorded in 23 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%).

Little Sunshines Learning Center II's 70 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
78
Total Violations
70
Health-Based Violations
7
Water Source
Groundwater

System Details

System Type
Non-Transient Non-Community
Owner Type
Private
Connections
1
County
Oneida
School/Daycare
Yes
MCL Violations
6
Monitoring Violations
56
Treatment Tech Violations
1

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Lead and Copper Rule MR 23 2015
Coliform (TCR) MR 17 2013
Revised Total Coliform Rule MON 16 2019
Public Notice Other 7 2019
Coliform (TCR) MCL 6 2011
Lead and Copper Rule TT 1 2011

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 Little Sunshines Learning Center II.

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 WI7440846 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 Little Sunshines Learning Center II 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
2019 Revised Total Coliform Rule MON 16 SDWIS / WI7440846 / 8000
2019 Public Notice Other 7 SDWIS / WI7440846 / 7500
2015 Lead and Copper Rule MR 23 SDWIS / WI7440846 / 5000
2013 Coliform (TCR) MR 17 SDWIS / WI7440846 / 3100
2011 Coliform (TCR) MCL 6 SDWIS / WI7440846 / 3100
2011 Lead and Copper Rule TT 1 SDWIS / WI7440846 / 5000

How Little Sunshines Learning Center II Compares

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

Metric Little Sunshines Learning Center II Wisconsin avg Federal benchmark
Total violations 70 26 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 7 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 78 467 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 Little Sunshines Learning Center II water safe to drink? ▼
Little Sunshines Learning Center II (PWS ID: WI7440846) has 70 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 78 people using Groundwater sources.
How many people does Little Sunshines Learning Center II serve? ▼
Little Sunshines Learning Center II serves 78 people in Three Lakes, Wisconsin. It is a Private-owned system using Groundwater water sources with 1 service connections.
What type of violations does Little Sunshines Learning Center II have? ▼
Little Sunshines Learning Center II has 70 total violations: 7 health-based violations (MCL exceedances or treatment failures), 56 monitoring/reporting violations, and 1 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Little Sunshines Learning Center II water? ▼
No PFAS testing data is available for Little Sunshines Learning Center II under the EPA's UCMR5 monitoring program.
What water source does Little Sunshines Learning Center II use? ▼
Little Sunshines Learning Center II 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.