PlainWater
States → Illinois

Non-Transient Non-Community Water System · PWS IL3159889

Arntzen Corporation

Woodstock, Illinois 60098 - drinking water served from groundwater sources to 30 people, tracked in EPA SDWIS and UCMR5.

30
People served
52
EPA violations
0
Health-based
Untested
UCMR5 result

The verdict

EPA records 52 drinking-water violations at Arntzen Corporation - below the Illinois per-system average.

52
Total EPA violations on record
0%
Health-based (MCL / treatment failure)
30
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Arntzen Corporation

Arntzen Corporation is a private-owned non-transient non-community water system that delivers drinking water to 30 residents in Woodstock, Illinois (McHenry County) through 1 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 52 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 51 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 Lead and Copper Rule, recorded in 5 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%).

Arntzen Corporation's 52 violations sit below 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
30
Total Violations
52
Health-Based Violations
0
Water Source
Groundwater

System Details

System Type
Non-Transient Non-Community
Owner Type
Private
Connections
1
County
McHenry
School/Daycare
No
MCL Violations
0
Monitoring Violations
51
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Lead and Copper Rule MR 5 2023
BHC-GAMMA MR 3 2017
2,4,5-TP MR 3 2017
Pentachlorophenol MR 3 2017
ETHYLENE DIBROMIDE MR 3 2017
Chlordane MR 3 2017
Carbofuran MR 3 2017
Heptachlor MR 3 2017
Heptachlor epoxide MR 3 2017
2,4-D MR 3 2017
Atrazine MR 3 2017
1,2-DIBROMO-3-CHLOROPROPANE MR 3 2017
LASSO MR 3 2017
Toxaphene MR 3 2017
Total Polychlorinated Biphenyls (PCB) MR 3 2017
Methoxychlor MR 3 2017
Public Notice Other 1 2025
Nitrate MR 1 2017

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 Arntzen Corporation.

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 IL3159889 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 Arntzen Corporation 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 Public Notice Other 1 SDWIS / IL3159889 / 7500
2023 Lead and Copper Rule MR 5 SDWIS / IL3159889 / 5000
2017 BHC-GAMMA MR 3 SDWIS / IL3159889 / 2010
2017 2,4,5-TP MR 3 SDWIS / IL3159889 / 2110
2017 Pentachlorophenol MR 3 SDWIS / IL3159889 / 2326
2017 ETHYLENE DIBROMIDE MR 3 SDWIS / IL3159889 / 2946
2017 Chlordane MR 3 SDWIS / IL3159889 / 2959
2017 Carbofuran MR 3 SDWIS / IL3159889 / 2046
2017 Heptachlor MR 3 SDWIS / IL3159889 / 2065
2017 Heptachlor epoxide MR 3 SDWIS / IL3159889 / 2067
2017 2,4-D MR 3 SDWIS / IL3159889 / 2105
2017 Atrazine MR 3 SDWIS / IL3159889 / 2050
2017 1,2-DIBROMO-3-CHLOROPROPANE MR 3 SDWIS / IL3159889 / 2931
2017 LASSO MR 3 SDWIS / IL3159889 / 2051
2017 Toxaphene MR 3 SDWIS / IL3159889 / 2020

How Arntzen Corporation Compares

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

Metric Arntzen Corporation Illinois avg Federal benchmark
Total violations 52 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 30 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 Arntzen Corporation water safe to drink? ▼
Arntzen Corporation (PWS ID: IL3159889) has 52 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 30 people using Groundwater sources.
How many people does Arntzen Corporation serve? ▼
Arntzen Corporation serves 30 people in Woodstock, Illinois. It is a Private-owned system using Groundwater water sources with 1 service connections.
What type of violations does Arntzen Corporation have? ▼
Arntzen Corporation has 52 total violations: 0 health-based violations (MCL exceedances or treatment failures), 51 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Arntzen Corporation water? ▼
No PFAS testing data is available for Arntzen Corporation under the EPA's UCMR5 monitoring program.
What water source does Arntzen Corporation use? ▼
Arntzen Corporation 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.