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Community Water System · PWS IL0970320

Promontory Pointe Homeowners Association

Lake Zurich, Illinois 60047 - drinking water served from groundwater sources to 78 people, tracked in EPA SDWIS and UCMR5.

78
People served
163
EPA violations
82
Health-based
Untested
UCMR5 result

The verdict

EPA records 163 drinking-water violations at Promontory Pointe Homeowners Association, 50% of them health-based - above the Illinois per-system average.

163
Total EPA violations on record
50%
Health-based (MCL / treatment failure)
78
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Promontory Pointe Homeowners Association

Promontory Pointe Homeowners Association is a private-owned community water system that delivers drinking water to 78 residents in Lake Zurich, Illinois (Lake County) through 26 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 163 total violations for this system , of which 82 (50%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 52 monitoring and reporting violations are on file. The most recent violation on record dates to 2025.

The most frequently cited contaminant at this system is Combined Radium (-226 and -228), recorded in 70 violations (MCL, health-based). 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%).

Promontory Pointe Homeowners Association's 163 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
78
Total Violations
163
Health-Based Violations
82
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
26
County
Lake
School/Daycare
No
MCL Violations
82
Monitoring Violations
52
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Combined Radium (-226 and -228) MCL 70 2005
Gross Alpha, Excl. Radon and U MCL 12 2005
Consumer Confidence Rule Other 7 2025
Chromium MR 4 2002
CYANIDE MR 4 2002
Fluoride MR 4 2002
Antimony, Total MR 4 2002
Beryllium, Total MR 4 2002
Selenium MR 4 2002
Combined Radium (-226 and -228) MR 4 2003
Mercury MR 4 2002
Arsenic MR 4 2002
Thallium, Total MR 4 2002
Barium MR 4 2002
Nickel MR 4 2002
Cadmium 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 Promontory Pointe Homeowners Association.

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 IL0970320 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 Promontory Pointe Homeowners Association 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
2025 Consumer Confidence Rule Other 7 SDWIS / IL0970320 / 7000
2005 Combined Radium (-226 and -228) MCL 70 SDWIS / IL0970320 / 4010
2005 Gross Alpha, Excl. Radon and U MCL 12 SDWIS / IL0970320 / 4000
2003 Combined Radium (-226 and -228) MR 4 SDWIS / IL0970320 / 4010
2002 Chromium MR 4 SDWIS / IL0970320 / 1020
2002 CYANIDE MR 4 SDWIS / IL0970320 / 1024
2002 Fluoride MR 4 SDWIS / IL0970320 / 1025
2002 Antimony, Total MR 4 SDWIS / IL0970320 / 1074
2002 Beryllium, Total MR 4 SDWIS / IL0970320 / 1075
2002 Selenium MR 4 SDWIS / IL0970320 / 1045
2002 Mercury MR 4 SDWIS / IL0970320 / 1035
2002 Arsenic MR 4 SDWIS / IL0970320 / 1005
2002 Thallium, Total MR 4 SDWIS / IL0970320 / 1085
2002 Barium MR 4 SDWIS / IL0970320 / 1010
2002 Nickel MR 4 SDWIS / IL0970320 / 1036

How Promontory Pointe Homeowners Association Compares

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

Metric Promontory Pointe Homeowners Association Illinois avg Federal benchmark
Total violations 163 69.4 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 82 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 78 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 Promontory Pointe Homeowners Association water safe to drink? ▼
Promontory Pointe Homeowners Association (PWS ID: IL0970320) has 163 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 Promontory Pointe Homeowners Association serve? ▼
Promontory Pointe Homeowners Association serves 78 people in Lake Zurich, Illinois. It is a Private-owned system using Groundwater water sources with 26 service connections.
What type of violations does Promontory Pointe Homeowners Association have? ▼
Promontory Pointe Homeowners Association has 163 total violations: 82 health-based violations (MCL exceedances or treatment failures), 52 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Promontory Pointe Homeowners Association water? ▼
No PFAS testing data is available for Promontory Pointe Homeowners Association under the EPA's UCMR5 monitoring program.
What water source does Promontory Pointe Homeowners Association use? ▼
Promontory Pointe Homeowners Association uses Groundwater as its primary water source. It is classified as a Community Water System (CWS), serving residential populations year-round.
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.