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Transient Non-Community Water System · PWS IL3137653

Royal Oaks Country Farm

Harvard, Illinois 60033 - drinking water served from groundwater sources to 80 people, tracked in EPA SDWIS and UCMR5.

80
People served
21
EPA violations
4
Health-based
Untested
UCMR5 result

The verdict

EPA records 21 drinking-water violations at Royal Oaks Country Farm, 19% of them health-based - below the Illinois per-system average.

21
Total EPA violations on record
19%
Health-based (MCL / treatment failure)
80
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Royal Oaks Country Farm

Royal Oaks Country Farm is a private-owned transient non-community water system that delivers drinking water to 80 residents in Harvard, Illinois (McHenry County) through 4 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 21 total violations for this system , of which 4 (19%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 15 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 Nitrate, recorded in 9 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%).

Royal Oaks Country Farm's 21 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
80
Total Violations
21
Health-Based Violations
4
Water Source
Groundwater

System Details

System Type
Transient Non-Community
Owner Type
Private
Connections
4
County
McHenry
School/Daycare
No
MCL Violations
0
Monitoring Violations
15
Treatment Tech Violations
4

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Nitrate MR 9 2021
Revised Total Coliform Rule TT 4 2021
Revised Total Coliform Rule MON 3 2021
Public Notice Other 2 2023
Nitrite MR 2 2017
Coliform (TCR) MR 1 2007

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 Royal Oaks Country Farm.

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 IL3137653 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 Royal Oaks Country Farm 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 2 SDWIS / IL3137653 / 7500
2021 Nitrate MR 9 SDWIS / IL3137653 / 1040
2021 Revised Total Coliform Rule TT 4 SDWIS / IL3137653 / 8000
2021 Revised Total Coliform Rule MON 3 SDWIS / IL3137653 / 8000
2017 Nitrite MR 2 SDWIS / IL3137653 / 1041
2007 Coliform (TCR) MR 1 SDWIS / IL3137653 / 3100

How Royal Oaks Country Farm Compares

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

Metric Royal Oaks Country Farm Illinois avg Federal benchmark
Total violations 21 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 80 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 Royal Oaks Country Farm water safe to drink? ▼
Royal Oaks Country Farm (PWS ID: IL3137653) has 21 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 80 people using Groundwater sources.
How many people does Royal Oaks Country Farm serve? ▼
Royal Oaks Country Farm serves 80 people in Harvard, Illinois. It is a Private-owned system using Groundwater water sources with 4 service connections.
What type of violations does Royal Oaks Country Farm have? ▼
Royal Oaks Country Farm has 21 total violations: 4 health-based violations (MCL exceedances or treatment failures), 15 monitoring/reporting violations, and 4 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Royal Oaks Country Farm water? ▼
No PFAS testing data is available for Royal Oaks Country Farm under the EPA's UCMR5 monitoring program.
What water source does Royal Oaks Country Farm use? ▼
Royal Oaks Country Farm uses Groundwater as its primary water source. It is classified as a Transient Non-Community Water System, serving transient populations.
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.