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Non-Transient Non-Community Water System · PWS IL3161212

Lucky Monk

South Barrington, Illinois 60010 - drinking water served from groundwater sources to 736 people, tracked in EPA SDWIS and UCMR5.

736
People served
1,722
EPA violations
0
Health-based
Untested
UCMR5 result

The verdict

EPA records 1,722 drinking-water violations at Lucky Monk - above the Illinois per-system average.

1,722
Total EPA violations on record
0%
Health-based (MCL / treatment failure)
736
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Lucky Monk

Lucky Monk is a private-owned non-transient non-community water system that delivers drinking water to 736 residents in South Barrington, Illinois (Cook County) through 1 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 1,722 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 1,704 monitoring and reporting violations are on file. The most recent violation on record dates to 2023.

The most frequently cited contaminant at this system is Carbofuran, recorded in 41 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%).

Lucky Monk's 1,722 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
736
Total Violations
1,722
Health-Based Violations
0
Water Source
Groundwater

System Details

System Type
Non-Transient Non-Community
Owner Type
Private
Connections
1
County
Cook
School/Daycare
No
MCL Violations
0
Monitoring Violations
1,704
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Carbofuran MR 41 2022
1,2-DIBROMO-3-CHLOROPROPANE MR 41 2022
ETHYLENE DIBROMIDE MR 41 2022
BHC-GAMMA MR 37 2022
Toxaphene MR 37 2022
LASSO MR 37 2022
Heptachlor epoxide MR 37 2022
2,4,5-TP MR 37 2022
Pentachlorophenol MR 37 2022
Chlordane MR 37 2022
Atrazine MR 37 2022
Heptachlor MR 37 2022
Total Polychlorinated Biphenyls (PCB) MR 37 2022
Methoxychlor MR 37 2022
2,4-D MR 37 2022
1,2-Dichloroethane MR 32 2022
p-Dichlorobenzene MR 32 2022
trans-1,2-Dichloroethylene MR 32 2022
Carbon tetrachloride MR 32 2022
1,2-Dichloropropane MR 32 2022
1,1,1-Trichloroethane MR 32 2022
Styrene MR 32 2022
Trichloroethylene MR 32 2022
1,1,2-Trichloroethane MR 32 2022
Tetrachloroethylene MR 32 2022
CHLOROBENZENE MR 32 2022
Benzene MR 32 2022
Toluene MR 32 2022
cis-1,2-Dichloroethylene MR 32 2022
Ethylbenzene MR 32 2022

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 Lucky Monk.

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 IL3161212 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 Lucky Monk 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
2023 Public Notice Other 17 SDWIS / IL3161212 / 7500
2022 Carbofuran MR 41 SDWIS / IL3161212 / 2046
2022 1,2-DIBROMO-3-CHLOROPROPANE MR 41 SDWIS / IL3161212 / 2931
2022 ETHYLENE DIBROMIDE MR 41 SDWIS / IL3161212 / 2946
2022 BHC-GAMMA MR 37 SDWIS / IL3161212 / 2010
2022 Toxaphene MR 37 SDWIS / IL3161212 / 2020
2022 LASSO MR 37 SDWIS / IL3161212 / 2051
2022 Heptachlor epoxide MR 37 SDWIS / IL3161212 / 2067
2022 2,4,5-TP MR 37 SDWIS / IL3161212 / 2110
2022 Pentachlorophenol MR 37 SDWIS / IL3161212 / 2326
2022 Chlordane MR 37 SDWIS / IL3161212 / 2959
2022 Atrazine MR 37 SDWIS / IL3161212 / 2050
2022 Heptachlor MR 37 SDWIS / IL3161212 / 2065
2022 Total Polychlorinated Biphenyls (PCB) MR 37 SDWIS / IL3161212 / 2383
2022 Methoxychlor MR 37 SDWIS / IL3161212 / 2015

How Lucky Monk Compares

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

Metric Lucky Monk Illinois avg Federal benchmark
Total violations 1,722 69.4 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 0 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 736 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 Lucky Monk water safe to drink? ▼
Lucky Monk (PWS ID: IL3161212) has 1722 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 736 people using Groundwater sources.
How many people does Lucky Monk serve? ▼
Lucky Monk serves 736 people in South Barrington, Illinois. It is a Private-owned system using Groundwater water sources with 1 service connections.
What type of violations does Lucky Monk have? ▼
Lucky Monk has 1,722 total violations: 0 health-based violations (MCL exceedances or treatment failures), 1,704 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Lucky Monk water? ▼
No PFAS testing data is available for Lucky Monk under the EPA's UCMR5 monitoring program.
What water source does Lucky Monk use? ▼
Lucky Monk 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.