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Community Water System · PWS IL1550050

Granville

Granville, Illinois 61326 - drinking water served from groundwater sources to 1,359 people, tracked in EPA SDWIS and UCMR5.

1,359
People served
392
EPA violations
208
Health-based
Untested
UCMR5 result

The verdict

EPA records 392 drinking-water violations at Granville, 53% of them health-based - above the Illinois per-system average.

392
Total EPA violations on record
53%
Health-based (MCL / treatment failure)
1,359
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Granville

Granville is a local-owned community water system that delivers drinking water to 1,359 residents in Granville, Illinois (Putnam County) through 653 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 392 total violations for this system , of which 208 (53%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 142 monitoring and reporting violations are on file. The most recent violation on record dates to 2020.

The most frequently cited contaminant at this system is Combined Radium (-226 and -228), recorded in 149 violations (MCL, health-based). 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%).

Granville's 392 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
1,359
Total Violations
392
Health-Based Violations
208
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
653
County
Putnam
School/Daycare
No
MCL Violations
208
Monitoring Violations
142
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Combined Radium (-226 and -228) MCL 149 2005
Gross Alpha, Excl. Radon and U MCL 57 2005
Coliform (TCR) MR 11 1996
BHC-GAMMA MR 4 2020
Diquat MR 4 2020
Endothall MR 4 2020
Di(2-ethylhexyl) adipate MR 4 2020
OXAMYL MR 4 2020
Simazine MR 4 2020
Picloram MR 4 2020
Dinoseb MR 4 2020
Hexachlorocyclopentadiene MR 4 2020
Aldicarb sulfoxide MR 4 2020
Atrazine MR 4 2020
LASSO MR 4 2020
Heptachlor MR 4 2020
2,4,5-TP MR 4 2020
HEXACHLOROBENZENE MR 4 2020
Benzo(a)pyrene MR 4 2020
1,2-DIBROMO-3-CHLOROPROPANE MR 4 2020
ETHYLENE DIBROMIDE MR 4 2020
Toxaphene MR 4 2020
Carbofuran MR 4 2020
Aldicarb sulfone MR 4 2020
2,4-D MR 4 2020
Endrin MR 4 2020
Di(2-ethylhexyl) phthalate MR 4 2020
Dalapon MR 4 2020
Total Polychlorinated Biphenyls (PCB) MR 4 2020
Methoxychlor MR 4 2020

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 Granville.

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 IL1550050 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 Granville 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
2020 BHC-GAMMA MR 4 SDWIS / IL1550050 / 2010
2020 Diquat MR 4 SDWIS / IL1550050 / 2032
2020 Endothall MR 4 SDWIS / IL1550050 / 2033
2020 Di(2-ethylhexyl) adipate MR 4 SDWIS / IL1550050 / 2035
2020 OXAMYL MR 4 SDWIS / IL1550050 / 2036
2020 Simazine MR 4 SDWIS / IL1550050 / 2037
2020 Picloram MR 4 SDWIS / IL1550050 / 2040
2020 Dinoseb MR 4 SDWIS / IL1550050 / 2041
2020 Hexachlorocyclopentadiene MR 4 SDWIS / IL1550050 / 2042
2020 Aldicarb sulfoxide MR 4 SDWIS / IL1550050 / 2043
2020 Atrazine MR 4 SDWIS / IL1550050 / 2050
2020 LASSO MR 4 SDWIS / IL1550050 / 2051
2020 Heptachlor MR 4 SDWIS / IL1550050 / 2065
2020 2,4,5-TP MR 4 SDWIS / IL1550050 / 2110
2020 HEXACHLOROBENZENE MR 4 SDWIS / IL1550050 / 2274

How Granville Compares

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

Metric Granville Illinois avg Federal benchmark
Total violations 392 69.4 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 208 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 1,359 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 Granville water safe to drink? ▼
Granville (PWS ID: IL1550050) has 392 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 1,359 people using Groundwater sources.
How many people does Granville serve? ▼
Granville serves 1,359 people in Granville, Illinois. It is a Local-owned system using Groundwater water sources with 653 service connections.
What type of violations does Granville have? ▼
Granville has 392 total violations: 208 health-based violations (MCL exceedances or treatment failures), 142 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Granville water? ▼
No PFAS testing data is available for Granville under the EPA's UCMR5 monitoring program.
What water source does Granville use? ▼
Granville 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.