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LAKE COUNTRY SCHOOL

PWS ID: WI2683609 · HARTFORD, Wisconsin 53029

LAKE COUNTRY SCHOOL serves 623 people in HARTFORD, Wisconsin using Groundwater water sources. It has 110 recorded EPA violations, including 9 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: LAKE COUNTRY SCHOOL

LAKE COUNTRY SCHOOL is a local-owned non-transient non-community water system that delivers drinking water to 623 residents in HARTFORD, Wisconsin (Waukesha County) through 1 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 110 total violations for this system , of which 9 (8%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 101 monitoring and reporting violations are on file. The most recent violation on record dates to 2020.

The most frequently cited contaminant at this system is Lead and Copper Rule, recorded in 8 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. LAKE COUNTRY SCHOOL's 110 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
623
Total Violations
110
Health-Based Violations
9
Water Source
Groundwater

System Details

System Type
Non-Transient Non-Community
Owner Type
Local
Connections
1
County
Waukesha
School/Daycare
Yes
MCL Violations
6
Monitoring Violations
101
Treatment Tech Violations
3

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Lead and Copper Rule MR 8 1995
Coliform (TCR) MCL 6 2012
Nitrate MR 5 2020
p-Dichlorobenzene MR 4 1995
1,2-Dichloropropane MR 4 1995
Toluene MR 4 1995
cis-1,2-Dichloroethylene MR 4 1995
Xylenes, Total MR 4 1995
DICHLOROMETHANE MR 4 1995
o-Dichlorobenzene MR 4 1995
Vinyl chloride MR 4 1995
1,1,1-Trichloroethane MR 4 1995
Carbon tetrachloride MR 4 1995
1,1,2-Trichloroethane MR 4 1995
Styrene MR 4 1995
Benzene MR 4 1995
Trichloroethylene MR 4 1995
Ethylbenzene MR 4 1995
Coliform (TCR) MR 4 1994
1,2-Dichloroethane MR 4 1995
Tetrachloroethylene MR 4 1995
1,2,4-Trichlorobenzene MR 4 1995
CHLOROBENZENE MR 4 1995
1,1-Dichloroethylene MR 4 1995
trans-1,2-Dichloroethylene MR 4 1995
Lead and Copper Rule TT 3 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 LAKE COUNTRY SCHOOL.

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 WI2683609 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 LAKE COUNTRY SCHOOL 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
2020 Nitrate MR 5 SDWIS / WI2683609 / 1040
2012 Coliform (TCR) MCL 6 SDWIS / WI2683609 / 3100
1995 Lead and Copper Rule MR 8 SDWIS / WI2683609 / 5000
1995 p-Dichlorobenzene MR 4 SDWIS / WI2683609 / 2969
1995 1,2-Dichloropropane MR 4 SDWIS / WI2683609 / 2983
1995 Toluene MR 4 SDWIS / WI2683609 / 2991
1995 cis-1,2-Dichloroethylene MR 4 SDWIS / WI2683609 / 2380
1995 Xylenes, Total MR 4 SDWIS / WI2683609 / 2955
1995 DICHLOROMETHANE MR 4 SDWIS / WI2683609 / 2964
1995 o-Dichlorobenzene MR 4 SDWIS / WI2683609 / 2968
1995 Vinyl chloride MR 4 SDWIS / WI2683609 / 2976
1995 1,1,1-Trichloroethane MR 4 SDWIS / WI2683609 / 2981
1995 Carbon tetrachloride MR 4 SDWIS / WI2683609 / 2982
1995 1,1,2-Trichloroethane MR 4 SDWIS / WI2683609 / 2985
1995 Styrene MR 4 SDWIS / WI2683609 / 2996

How LAKE COUNTRY SCHOOL Compares

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

Metric LAKE COUNTRY SCHOOL Wisconsin avg Federal benchmark
Total violations 110 26 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 9 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 623 467 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 LAKE COUNTRY SCHOOL water safe to drink? ▼
LAKE COUNTRY SCHOOL (PWS ID: WI2683609) has 110 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 623 people using Groundwater sources.
How many people does LAKE COUNTRY SCHOOL serve? ▼
LAKE COUNTRY SCHOOL serves 623 people in HARTFORD, Wisconsin. It is a Local-owned system using Groundwater water sources with 1 service connections.
What type of violations does LAKE COUNTRY SCHOOL have? ▼
LAKE COUNTRY SCHOOL has 110 total violations: 9 health-based violations (MCL exceedances or treatment failures), 101 monitoring/reporting violations, and 3 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in LAKE COUNTRY SCHOOL water? ▼
No PFAS testing data is available for LAKE COUNTRY SCHOOL under the EPA's UCMR5 monitoring program.
What water source does LAKE COUNTRY SCHOOL use? ▼
LAKE COUNTRY SCHOOL 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.

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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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