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Herrick, IL Tap Water Quality 2026

Water quality report for Herrick, IL — PFAS, lead and copper results, violation history and state inspection findings from EPA SDWIS.

A look at Herrick's drinking water using EPA enforcement records: violations, lead and copper results, PFAS sampling and state inspection findings.

Main Utility: Herrick PWSID: IL1730150 Updated: 2026 Q2
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1 violation currently open

Lead is 3.10 ppb, 21% of the action level. PFAS has never been sampled at this system.

F

Herrick earns an F for water quality

Graded on violations and lead, with state inspection findings. PFAS not tested.

Lead: 3.10 ppb — 21% of the federal action level
PFAS never sampled at this system
43 violations since 2015, 1 health-based
1 violation currently open
Herrick's lead level vs. all Illinois community water systems
0 ppb5 ppb10 ppb15 ppb
Lead level: 3.10 ppb — 21% of the federal action level
✓ Lower lead than 44% of Illinois utilities
Population Served
355
~280 connections
Water Source
Groundwater
Drawn from wells — SDWIS source code GW
Active Violations
1
1 open of 43 since 2015

Lead & Copper Testing

Lead (Pb)
90th percentile of tap samples collected across the distribution system
21% of EPA action level
3.10 ppb
Action level: 15 ppb
Copper (Cu)
90th percentile of tap samples. SDWIS reports a copper figure only when a system exceeds the action level, so any value here is an exceedance.
153.8% of EPA action level
2,000 ppb
Action level: 1,300 ppb
The 90th-percentile lead result is 3.10 ppb, 21% of the 15 ppb federal action level. The action level is a treatment trigger, not a legal maximum, and it is measured across sampled taps rather than at any single home. Copper reached the action level here; a copper figure appears in SDWIS only when a system triggers it.

Contaminant Violations (2015–Present)

ContaminantTypeMeasuredLimitPeriodStatus
LEAD AND COPPER RULE REVISIONS REPORTING FAILURE — — 2025 Unaddressed
Total Haloacetic Acids (HAA5) MONITORING AND REPORTING — 0.060 mg/L 2025 Archived
Lead and Copper Rule TREATMENT TECHNIQUE — TT 2023 Unaddressed
Lead and Copper Rule MONITORING AND REPORTING — TT 2022 Resolved
Consumer Confidence Rule OTHER — — 2022 Resolved
Consumer Confidence Rule OTHER — — 2021 Resolved
Consumer Confidence Rule OTHER — — 2020 Resolved
Endrin MONITORING AND REPORTING — 0.002 mg/L 2020–2022 Resolved
BHC-GAMMA MONITORING AND REPORTING — 0.0002 mg/L 2020–2022 Resolved
Methoxychlor MONITORING AND REPORTING — 0.04 mg/L 2020–2022 Resolved
Toxaphene MONITORING AND REPORTING — 0.003 mg/L 2020–2022 Resolved
Dalapon MONITORING AND REPORTING — 0.2 mg/L 2020–2022 Resolved
Diquat MONITORING AND REPORTING — 0.02 mg/L 2020–2022 Resolved
Endothall MONITORING AND REPORTING — 0.1 mg/L 2020–2022 Resolved
Di(2-ethylhexyl) adipate MONITORING AND REPORTING — 0.4 mg/L 2020–2022 Resolved
OXAMYL MONITORING AND REPORTING — 0.2 mg/L 2020–2022 Resolved
Simazine MONITORING AND REPORTING — 0.004 mg/L 2020–2022 Resolved
Di(2-ethylhexyl) phthalate MONITORING AND REPORTING — 0.006 mg/L 2020–2022 Resolved
Picloram MONITORING AND REPORTING — 0.5 mg/L 2020–2022 Resolved
Dinoseb MONITORING AND REPORTING — 0.007 mg/L 2020–2022 Resolved
Hexachlorocyclopentadiene MONITORING AND REPORTING — 0.05 mg/L 2020–2022 Resolved
Aldicarb sulfoxide MONITORING AND REPORTING — — 2020–2022 Resolved
Aldicarb sulfone MONITORING AND REPORTING — — 2020–2022 Resolved
Carbofuran MONITORING AND REPORTING — 0.04 mg/L 2020–2022 Resolved
Aldicarb MONITORING AND REPORTING — — 2020–2022 Resolved
Atrazine MONITORING AND REPORTING — 0.003 mg/L 2020–2022 Resolved
LASSO MONITORING AND REPORTING — — 2020–2022 Resolved
Heptachlor MONITORING AND REPORTING — 0.0004 mg/L 2020–2022 Resolved
Heptachlor epoxide MONITORING AND REPORTING — 0.0002 mg/L 2020–2022 Resolved
2,4-D MONITORING AND REPORTING — 0.07 mg/L 2020–2022 Resolved
2,4,5-TP MONITORING AND REPORTING — 0.05 mg/L 2020–2022 Resolved
HEXACHLOROBENZENE MONITORING AND REPORTING — 0.001 mg/L 2020–2022 Resolved
Benzo(a)pyrene MONITORING AND REPORTING — 0.0002 mg/L 2020–2022 Resolved
Pentachlorophenol MONITORING AND REPORTING — 0.001 mg/L 2020–2022 Resolved
Total Polychlorinated Biphenyls (PCB) MONITORING AND REPORTING — 0.0005 mg/L 2020–2022 Resolved
1,2-DIBROMO-3-CHLOROPROPANE MONITORING AND REPORTING — 0.0002 mg/L 2020–2022 Resolved
ETHYLENE DIBROMIDE MONITORING AND REPORTING — 0.00005 mg/L 2020–2022 Resolved
Chlordane MONITORING AND REPORTING — 0.002 mg/L 2020–2022 Resolved
Lead and Copper Rule MONITORING AND REPORTING — TT 2019 Resolved
Consumer Confidence Rule OTHER — — 2019 Resolved
Consumer Confidence Rule OTHER — — 2018 Resolved
Consumer Confidence Rule OTHER — — 2017 Resolved
Lead and Copper Rule MONITORING AND REPORTING — TT 2017 Resolved
Understanding violation types MCL violations mean a contaminant exceeded the federal maximum limit — the most serious type.
TT (Treatment Technique) violations mean required treatment procedures weren't followed, but don't necessarily mean contamination occurred.

Violation History

1 violation remains open, out of 43 recorded since 2015 (1 health-based).

About the Main Water System

Utility Herrick
PWSID IL1730150
Water source Groundwater — Drawn from wells — SDWIS source code GW
Population served 355
Service connections 280
Systems serving this area 1
Regulator State primacy agency
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Herrick tap water safe to drink? ▼
No federal limit is exceeded on record. 1 violation(s) remain open. Lead is 3.10 ppb, 21% of the action level.
Does Herrick water have PFAS? ▼
This system has never been sampled for PFAS. EPA's national monitoring covered systems serving 3,300 people or more, so no results exist — which is not evidence that none is present.
Who supplies water to Herrick? ▼
Herrick (PWSID IL1730150). Groundwater. Drawn from wells — SDWIS source code GW
When was this system last inspected? ▼
It was last inspected on 2026-01-20. Inspectors recorded 3 significant deficiencies.

What Should Herrick Residents Do?

1
Read your annual water report
Your supplier publishes a Consumer Confidence Report each July covering the prior year.
2
Check for a lead service line
Lead reaches tap water mainly through service lines and household plumbing. Suppliers now publish an inventory identifying lead lines.
3
Follow the open violation
This system has an unresolved violation. Contact the supplier for its corrective-action schedule.

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