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Non-Transient Non-Community Water System · PWS IL3019562

Millburn School

Twin Lakes, Illinois 53181 - drinking water served from groundwater sources to 400 people, tracked in EPA SDWIS and UCMR5.

400
People served
270
EPA violations
4
Health-based
Untested
UCMR5 result

The verdict

EPA records 270 drinking-water violations at Millburn School, 1% of them health-based - above the Illinois per-system average.

270
Total EPA violations on record
1%
Health-based (MCL / treatment failure)
400
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Millburn School

Millburn School is a local-owned non-transient non-community water system that delivers drinking water to 400 residents in Twin Lakes, Illinois (Lake County) through 1 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 270 total violations for this system , of which 4 (1%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 262 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 Benzene, 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 Illinois, EPA tracks 5,117 public water systems serving 12,576,876 people, with 355,322 cumulative violations and 52,932 health-based violations on record. About 81% of systems in the state carry at least one violation, and state-wide the average per system is 69.4 violations. Statewide, 123 of 487 UCMR5-tested systems have reported PFAS detections (25.3%).

Millburn School's 270 violations sit above the Illinois 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
400
Total Violations
270
Health-Based Violations
4
Water Source
Groundwater

System Details

System Type
Non-Transient Non-Community
Owner Type
Local
Connections
1
County
Lake
School/Daycare
Yes
MCL Violations
0
Monitoring Violations
262
Treatment Tech Violations
4

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Benzene MR 8 2006
Toluene MR 8 2006
Styrene MR 8 2006
cis-1,2-Dichloroethylene MR 8 2006
Xylenes, Total MR 8 2006
1,2-Dichloropropane MR 8 2006
Trichloroethylene MR 8 2006
Tetrachloroethylene MR 8 2006
1,2,4-Trichlorobenzene MR 8 2006
DICHLOROMETHANE MR 8 2006
o-Dichlorobenzene MR 8 2006
p-Dichlorobenzene MR 8 2006
Vinyl chloride MR 8 2006
1,1-Dichloroethylene MR 8 2006
trans-1,2-Dichloroethylene MR 8 2006
1,1,1-Trichloroethane MR 8 2006
Carbon tetrachloride MR 8 2006
CHLOROBENZENE MR 8 2006
Ethylbenzene MR 8 2006
1,2-Dichloroethane MR 8 2006
1,1,2-Trichloroethane MR 8 2006
OXAMYL MR 6 2020
Carbofuran MR 6 2020
Barium MR 4 2002
Cadmium MR 4 2002
Chromium MR 4 2002
Antimony, Total MR 4 2002
Beryllium, Total MR 4 2002
CYANIDE MR 4 2002
Mercury MR 4 2002

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 Millburn 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 IL3019562 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Illinois Drinking Water Authority

Illinois EPA, Bureau of Water is the primacy agency that licenses and inspects Millburn School under EPA-delegated authority.

Open IL regulator portal

Source: Illinois EPA, Bureau of Water

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 REVISIONS TT 4 SDWIS / IL3019562 / 5200
2024 LEAD AND COPPER RULE REVISIONS RPT 4 SDWIS / IL3019562 / 5200
2023 Lead and Copper Rule MR 2 SDWIS / IL3019562 / 5000
2020 OXAMYL MR 6 SDWIS / IL3019562 / 2036
2020 Carbofuran MR 6 SDWIS / IL3019562 / 2046
2018 TTHM MR 3 SDWIS / IL3019562 / 2950
2018 Total Haloacetic Acids (HAA5) MR 3 SDWIS / IL3019562 / 2456
2006 Benzene MR 8 SDWIS / IL3019562 / 2990
2006 Toluene MR 8 SDWIS / IL3019562 / 2991
2006 Styrene MR 8 SDWIS / IL3019562 / 2996
2006 cis-1,2-Dichloroethylene MR 8 SDWIS / IL3019562 / 2380
2006 Xylenes, Total MR 8 SDWIS / IL3019562 / 2955
2006 1,2-Dichloropropane MR 8 SDWIS / IL3019562 / 2983
2006 Trichloroethylene MR 8 SDWIS / IL3019562 / 2984
2006 Tetrachloroethylene MR 8 SDWIS / IL3019562 / 2987

How Millburn School Compares

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

Metric Millburn School Illinois avg Federal benchmark
Total violations 270 69.4 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 4 10.3 Indicates a contaminant exceeded a federal MCL
PFAS detection None 25.3% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 400 2,458 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 5,117 regulated public water systems in Illinois.

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 Millburn School water safe to drink? ▼
Millburn School (PWS ID: IL3019562) has 270 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 400 people using Groundwater sources.
How many people does Millburn School serve? ▼
Millburn School serves 400 people in Twin Lakes, Illinois. It is a Local-owned system using Groundwater water sources with 1 service connections.
What type of violations does Millburn School have? ▼
Millburn School has 270 total violations: 4 health-based violations (MCL exceedances or treatment failures), 262 monitoring/reporting violations, and 4 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Millburn School water? ▼
No PFAS testing data is available for Millburn School under the EPA's UCMR5 monitoring program.
What water source does Millburn School use? ▼
Millburn 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.
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.