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Community Water System · PWS IL1130100

Arrowsmith

Arrowsmith, Illinois 61722 - drinking water served from groundwater sources to 315 people, tracked in EPA SDWIS and UCMR5.

315
People served
58
EPA violations
0
Health-based
Untested
UCMR5 result

The verdict

EPA records 58 drinking-water violations at Arrowsmith - below the Illinois per-system average.

58
Total EPA violations on record
0%
Health-based (MCL / treatment failure)
315
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Arrowsmith

Arrowsmith is a local-owned community water system that delivers drinking water to 315 residents in Arrowsmith, Illinois (McLean County) through 128 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 58 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 44 monitoring and reporting violations are on file. The most recent violation on record dates to 2010.

The most frequently cited contaminant at this system is Nitrate, recorded in 12 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%).

Arrowsmith's 58 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
315
Total Violations
58
Health-Based Violations
0
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
128
County
McLean
School/Daycare
No
MCL Violations
0
Monitoring Violations
44
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Nitrate MR 12 2007
Chlorine MR 8 2005
Lead and Copper Rule MR 8 2010
TTHM MR 6 2004
Total Haloacetic Acids (HAA5) MR 6 2004
Coliform (TCR) MR 3 1998
Consumer Confidence Rule Other 2 2005
Public Notice Other 2 2008
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 Arrowsmith.

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 IL1130100 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 Arrowsmith 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
2010 Lead and Copper Rule MR 8 SDWIS / IL1130100 / 5000
2008 Public Notice Other 2 SDWIS / IL1130100 / 7500
2007 Nitrate MR 12 SDWIS / IL1130100 / 1040
2005 Chlorine MR 8 SDWIS / IL1130100 / 0999
2005 Consumer Confidence Rule Other 2 SDWIS / IL1130100 / 7000
2004 TTHM MR 6 SDWIS / IL1130100 / 2950
2004 Total Haloacetic Acids (HAA5) MR 6 SDWIS / IL1130100 / 2456
1998 Coliform (TCR) MR 3 SDWIS / IL1130100 / 3100
1977 Gross Alpha, Excl. Radon and U MR 1 SDWIS / IL1130100 / 4000

How Arrowsmith Compares

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

Metric Arrowsmith Illinois avg Federal benchmark
Total violations 58 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 40.9% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 315 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 Arrowsmith water safe to drink? ▼
Arrowsmith (PWS ID: IL1130100) has 58 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 315 people using Groundwater sources.
How many people does Arrowsmith serve? ▼
Arrowsmith serves 315 people in Arrowsmith, Illinois. It is a Local-owned system using Groundwater water sources with 128 service connections.
What type of violations does Arrowsmith have? ▼
Arrowsmith has 58 total violations: 0 health-based violations (MCL exceedances or treatment failures), 44 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Arrowsmith water? ▼
No PFAS testing data is available for Arrowsmith under the EPA's UCMR5 monitoring program.
What water source does Arrowsmith use? ▼
Arrowsmith 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.