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Community Water System · PWS IL1870200

Roseville

Roseville, Illinois 61473 - drinking water served from groundwater sources to 915 people, tracked in EPA SDWIS and UCMR5.

915
People served
130
EPA violations
72
Health-based
Untested
UCMR5 result

The verdict

EPA records 130 drinking-water violations at Roseville, 55% of them health-based - above the Illinois per-system average.

130
Total EPA violations on record
55%
Health-based (MCL / treatment failure)
915
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Roseville

Roseville is a local-owned community water system that delivers drinking water to 915 residents in Roseville, Illinois (Warren County) through 495 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 130 total violations for this system , of which 72 (55%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 42 monitoring and reporting violations are on file. The most recent violation on record dates to 2018.

The most frequently cited contaminant at this system is Nitrate, recorded in 48 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, 123 of 487 UCMR5-tested systems have reported PFAS detections (25.3%).

Roseville's 130 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
915
Total Violations
130
Health-Based Violations
72
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
495
County
Warren
School/Daycare
No
MCL Violations
72
Monitoring Violations
42
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Nitrate MCL 48 1995
Coliform (TCR) MR 39 2002
Coliform (TCR) MCL 18 2003
Revised Total Coliform Rule MCL 6 2018
Consumer Confidence Rule Other 4 2017
Lead and Copper Rule MR 2 1995
Public Notice Other 2 2003
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 Roseville.

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 IL1870200 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 Roseville 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
2018 Revised Total Coliform Rule MCL 6 SDWIS / IL1870200 / 8000
2017 Consumer Confidence Rule Other 4 SDWIS / IL1870200 / 7000
2003 Coliform (TCR) MCL 18 SDWIS / IL1870200 / 3100
2003 Public Notice Other 2 SDWIS / IL1870200 / 7500
2002 Coliform (TCR) MR 39 SDWIS / IL1870200 / 3100
1995 Nitrate MCL 48 SDWIS / IL1870200 / 1040
1995 Lead and Copper Rule MR 2 SDWIS / IL1870200 / 5000
1977 Gross Alpha, Excl. Radon and U MR 1 SDWIS / IL1870200 / 4000

How Roseville Compares

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

Metric Roseville Illinois avg Federal benchmark
Total violations 130 69.4 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 72 10.3 Indicates a contaminant exceeded a federal MCL
PFAS detection None 25.3% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 915 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 Roseville water safe to drink? ▼
Roseville (PWS ID: IL1870200) has 130 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 915 people using Groundwater sources.
How many people does Roseville serve? ▼
Roseville serves 915 people in Roseville, Illinois. It is a Local-owned system using Groundwater water sources with 495 service connections.
What type of violations does Roseville have? ▼
Roseville has 130 total violations: 72 health-based violations (MCL exceedances or treatment failures), 42 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Roseville water? ▼
No PFAS testing data is available for Roseville under the EPA's UCMR5 monitoring program.
What water source does Roseville use? ▼
Roseville 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.