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Community Water System · PWS IL1795450

Harvard Hills Water Corporation

Washington, Illinois 61571 - drinking water served from groundwater sources to 250 people, tracked in EPA SDWIS and UCMR5.

250
People served
45
EPA violations
9
Health-based
Untested
UCMR5 result

The verdict

EPA records 45 drinking-water violations at Harvard Hills Water Corporation, 20% of them health-based - below the Illinois per-system average.

45
Total EPA violations on record
20%
Health-based (MCL / treatment failure)
250
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Harvard Hills Water Corporation

Harvard Hills Water Corporation is a private-owned community water system that delivers drinking water to 250 residents in Washington, Illinois (Tazewell County) through 86 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 45 total violations for this system , of which 9 (20%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 20 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 Coliform (TCR), 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, 199 of 487 UCMR5-tested systems have reported PFAS detections (40.9%).

Harvard Hills Water Corporation's 45 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
250
Total Violations
45
Health-Based Violations
9
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
86
County
Tazewell
School/Daycare
No
MCL Violations
4
Monitoring Violations
20
Treatment Tech Violations
5

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 9 1998
Consumer Confidence Rule Other 9 2025
Gross Alpha, Excl. Radon and U MR 7 1982
Lead and Copper Rule TT 5 2023
Lead and Copper Rule MR 4 2024
Coliform (TCR) MCL 4 2007
Public Notice Other 3 2025

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 Harvard Hills Water 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 IL1795450 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 Harvard Hills Water 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 Consumer Confidence Rule Other 9 SDWIS / IL1795450 / 7000
2025 Public Notice Other 3 SDWIS / IL1795450 / 7500
2024 Lead and Copper Rule MR 4 SDWIS / IL1795450 / 5000
2023 Lead and Copper Rule TT 5 SDWIS / IL1795450 / 5000
2007 Coliform (TCR) MCL 4 SDWIS / IL1795450 / 3100
1998 Coliform (TCR) MR 9 SDWIS / IL1795450 / 3100
1982 Gross Alpha, Excl. Radon and U MR 7 SDWIS / IL1795450 / 4000

How Harvard Hills Water Corporation Compares

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

Metric Harvard Hills Water Corporation Illinois avg Federal benchmark
Total violations 45 69.4 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 9 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 250 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 Harvard Hills Water Corporation water safe to drink? ▼
Harvard Hills Water Corporation (PWS ID: IL1795450) has 45 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 250 people using Groundwater sources.
How many people does Harvard Hills Water Corporation serve? ▼
Harvard Hills Water Corporation serves 250 people in Washington, Illinois. It is a Private-owned system using Groundwater water sources with 86 service connections.
What type of violations does Harvard Hills Water Corporation have? ▼
Harvard Hills Water Corporation has 45 total violations: 9 health-based violations (MCL exceedances or treatment failures), 20 monitoring/reporting violations, and 5 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Harvard Hills Water Corporation water? ▼
No PFAS testing data is available for Harvard Hills Water Corporation under the EPA's UCMR5 monitoring program.
What water source does Harvard Hills Water Corporation use? ▼
Harvard Hills Water Corporation 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.