Non-Transient Non-Community Water System · PWS IL3147801

Cbre West Plaza

Northbrook, Illinois 60062 - drinking water served from groundwater sources to 600 people, tracked in EPA SDWIS and UCMR5.

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

600
People served: 638
EPA violations: 0
Health-based: Untested
UCMR5 result

The verdict

EPA records 638 drinking-water violations at Cbre West Plaza - above the Illinois per-system average.

638
Total EPA violations on record: 0%
Health-based (MCL / treatment failure): 600
People served by this system: N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Cbre West Plaza

Cbre West Plaza is a private-owned non-transient non-community water system that delivers drinking water to 600 residents in Northbrook, Illinois (Cook County) through 1 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 638 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 632 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 1,2-Dichloroethane, recorded in 18 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%).

Cbre West Plaza's 638 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

600

Total Violations

638

Health-Based Violations

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: 632
Treatment Tech Violations: 0

Violation History

Contaminant violations recorded by EPA.

Contaminant	Category	Count	Latest
1,2-Dichloroethane	MR	18	2022
1,2,4-Trichlorobenzene	MR	18	2022
1,2-Dichloropropane	MR	18	2022
1,1,2-Trichloroethane	MR	18	2022
o-Dichlorobenzene	MR	18	2022
p-Dichlorobenzene	MR	18	2022
Vinyl chloride	MR	18	2022
1,1-Dichloroethylene	MR	18	2022
trans-1,2-Dichloroethylene	MR	18	2022
1,1,1-Trichloroethane	MR	18	2022
CHLOROBENZENE	MR	18	2022
Benzene	MR	18	2022
Styrene	MR	18	2022
DICHLOROMETHANE	MR	18	2022
Carbon tetrachloride	MR	18	2022
Tetrachloroethylene	MR	18	2022
Ethylbenzene	MR	18	2022
cis-1,2-Dichloroethylene	MR	18	2022
Xylenes, Total	MR	18	2022
Toluene	MR	18	2022
Trichloroethylene	MR	18	2022
Lead and Copper Rule	MR	11	2021
Methoxychlor	MR	9	2008
Carbofuran	MR	9	2008
Atrazine	MR	9	2008
LASSO	MR	9	2008
Heptachlor	MR	9	2008
Heptachlor epoxide	MR	9	2008
2,4,5-TP	MR	9	2008
Pentachlorophenol	MR	9	2008

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 Cbre West Plaza.

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 IL3147801 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 Cbre West Plaza 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	Chlorine	MR	7	SDWIS / IL3147801 / 0999
2023	Public Notice	Other	4	SDWIS / IL3147801 / 7500
2022	1,2-Dichloroethane	MR	18	SDWIS / IL3147801 / 2980
2022	1,2,4-Trichlorobenzene	MR	18	SDWIS / IL3147801 / 2378
2022	1,2-Dichloropropane	MR	18	SDWIS / IL3147801 / 2983
2022	1,1,2-Trichloroethane	MR	18	SDWIS / IL3147801 / 2985
2022	o-Dichlorobenzene	MR	18	SDWIS / IL3147801 / 2968
2022	p-Dichlorobenzene	MR	18	SDWIS / IL3147801 / 2969
2022	Vinyl chloride	MR	18	SDWIS / IL3147801 / 2976
2022	1,1-Dichloroethylene	MR	18	SDWIS / IL3147801 / 2977
2022	trans-1,2-Dichloroethylene	MR	18	SDWIS / IL3147801 / 2979
2022	1,1,1-Trichloroethane	MR	18	SDWIS / IL3147801 / 2981
2022	CHLOROBENZENE	MR	18	SDWIS / IL3147801 / 2989
2022	Benzene	MR	18	SDWIS / IL3147801 / 2990
2022	Styrene	MR	18	SDWIS / IL3147801 / 2996

How Cbre West Plaza Compares

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

Metric	Cbre West Plaza	Illinois avg	Federal benchmark
Total violations	638	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	600	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 Cbre West Plaza water safe to drink? ▼

Cbre West Plaza (PWS ID: IL3147801) has 638 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 600 people using Groundwater sources.

How many people does Cbre West Plaza serve? ▼

Cbre West Plaza serves 600 people in Northbrook, Illinois. It is a Private-owned system using Groundwater water sources with 1 service connections.

What type of violations does Cbre West Plaza have? ▼

Cbre West Plaza has 638 total violations: 0 health-based violations (MCL exceedances or treatment failures), 632 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.

Has PFAS been detected in Cbre West Plaza water? ▼

No PFAS testing data is available for Cbre West Plaza under the EPA's UCMR5 monitoring program.

What water source does Cbre West Plaza use? ▼

Cbre West Plaza 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.