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Community Water System · PWS IL1115600

Aqua Illinois-Nunda

Kankakee, Illinois 60901 - drinking water served from groundwater sources to 485 people, tracked in EPA SDWIS and UCMR5.

485
People served
194
EPA violations
5
Health-based
Untested
UCMR5 result

The verdict

EPA records 194 drinking-water violations at Aqua Illinois-Nunda, 3% of them health-based - above the Illinois per-system average.

194
Total EPA violations on record
3%
Health-based (MCL / treatment failure)
485
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Aqua Illinois-Nunda

Aqua Illinois-Nunda is a private-owned community water system that delivers drinking water to 485 residents in Kankakee, Illinois (McHenry County) through 194 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 194 total violations for this system , of which 5 (3%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 156 monitoring and reporting violations are on file. The most recent violation on record dates to 2016.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 36 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, 199 of 487 UCMR5-tested systems have reported PFAS detections (40.9%).

Aqua Illinois-Nunda's 194 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
485
Total Violations
194
Health-Based Violations
5
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
194
County
McHenry
School/Daycare
No
MCL Violations
4
Monitoring Violations
156
Treatment Tech Violations
1

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 36 2014
Lead and Copper Rule MR 13 2015
Nitrate MR 11 1994
Chlorine MR 11 2014
Public Notice Other 10 2016
Aldicarb sulfone MR 8 1993
Aldicarb sulfoxide MR 8 1993
Aldicarb MR 8 1993
BHC-GAMMA MR 4 1993
Methoxychlor MR 4 1993
Toxaphene MR 4 1993
Carbofuran MR 4 1993
Atrazine MR 4 1993
LASSO MR 4 1993
Heptachlor MR 4 1993
Heptachlor epoxide MR 4 1993
2,4-D MR 4 1993
2,4,5-TP MR 4 1993
Pentachlorophenol MR 4 1993
Total Polychlorinated Biphenyls (PCB) MR 4 1993
1,2-DIBROMO-3-CHLOROPROPANE MR 4 1993
ETHYLENE DIBROMIDE MR 4 1993
Chlordane MR 4 1993
Consumer Confidence Rule Other 4 2014
Coliform (TCR) MCL 4 1992
Lead and Copper Rule TT 1 1994
Gross Alpha, Excl. Radon and U MR 1 1977

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 Aqua Illinois-Nunda.

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 IL1115600 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 Aqua Illinois-Nunda 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
2016 Public Notice Other 10 SDWIS / IL1115600 / 7500
2015 Lead and Copper Rule MR 13 SDWIS / IL1115600 / 5000
2014 Coliform (TCR) MR 36 SDWIS / IL1115600 / 3100
2014 Chlorine MR 11 SDWIS / IL1115600 / 0999
2014 Consumer Confidence Rule Other 4 SDWIS / IL1115600 / 7000
1994 Nitrate MR 11 SDWIS / IL1115600 / 1040
1994 Lead and Copper Rule TT 1 SDWIS / IL1115600 / 5000
1993 Aldicarb sulfone MR 8 SDWIS / IL1115600 / 2044
1993 Aldicarb sulfoxide MR 8 SDWIS / IL1115600 / 2043
1993 Aldicarb MR 8 SDWIS / IL1115600 / 2047
1993 BHC-GAMMA MR 4 SDWIS / IL1115600 / 2010
1993 Methoxychlor MR 4 SDWIS / IL1115600 / 2015
1993 Toxaphene MR 4 SDWIS / IL1115600 / 2020
1993 Carbofuran MR 4 SDWIS / IL1115600 / 2046
1993 Atrazine MR 4 SDWIS / IL1115600 / 2050

How Aqua Illinois-Nunda Compares

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

Metric Aqua Illinois-Nunda Illinois avg Federal benchmark
Total violations 194 69.4 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 5 10.3 Indicates a contaminant exceeded a federal MCL
PFAS detection None 40.9% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 485 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 Aqua Illinois-Nunda water safe to drink? ▼
Aqua Illinois-Nunda (PWS ID: IL1115600) has 194 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 485 people using Groundwater sources.
How many people does Aqua Illinois-Nunda serve? ▼
Aqua Illinois-Nunda serves 485 people in Kankakee, Illinois. It is a Private-owned system using Groundwater water sources with 194 service connections.
What type of violations does Aqua Illinois-Nunda have? ▼
Aqua Illinois-Nunda has 194 total violations: 5 health-based violations (MCL exceedances or treatment failures), 156 monitoring/reporting violations, and 1 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Aqua Illinois-Nunda water? ▼
No PFAS testing data is available for Aqua Illinois-Nunda under the EPA's UCMR5 monitoring program.
What water source does Aqua Illinois-Nunda use? ▼
Aqua Illinois-Nunda 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.