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Community Water System · PWS IL1530100

Mound City

Mound City, Illinois 62963 - drinking water served from groundwater sources to 526 people, tracked in EPA SDWIS and UCMR5.

526
People served
86
EPA violations
0
Health-based
Untested
UCMR5 result

The verdict

EPA records 86 drinking-water violations at Mound City - above the Illinois per-system average.

86
Total EPA violations on record
0%
Health-based (MCL / treatment failure)
526
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Mound City

Mound City is a local-owned community water system that delivers drinking water to 526 residents in Mound City, Illinois (Pulaski County) through 166 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 86 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 68 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 Consumer Confidence Rule, recorded in 8 violations (Other). 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%).

Mound City's 86 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
526
Total Violations
86
Health-Based Violations
0
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
166
County
Pulaski
School/Daycare
No
MCL Violations
0
Monitoring Violations
68
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Consumer Confidence Rule Other 8 2017
Xylenes, Total MR 7 2004
Public Notice Other 4 2005
Lead and Copper Rule MR 4 2017
Revised Total Coliform Rule MON 4 2018
Chlorine MR 4 2018
cis-1,2-Dichloroethylene MR 3 1992
o-Dichlorobenzene MR 3 1992
1,1-Dichloroethylene MR 3 1992
trans-1,2-Dichloroethylene MR 3 1992
1,2-Dichloroethane MR 3 1992
1,1,1-Trichloroethane MR 3 1992
1,2-Dichloropropane MR 3 1992
Trichloroethylene MR 3 1992
Tetrachloroethylene MR 3 1992
Ethylbenzene MR 3 1992
Carbon tetrachloride MR 3 1992
Toluene MR 3 1992
Benzene MR 3 1992
CHLOROBENZENE MR 3 1992
p-Dichlorobenzene MR 3 1992
Styrene MR 3 1992
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 Mound City.

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 IL1530100 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 Mound City 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 MON 4 SDWIS / IL1530100 / 8000
2018 Chlorine MR 4 SDWIS / IL1530100 / 0999
2017 Consumer Confidence Rule Other 8 SDWIS / IL1530100 / 7000
2017 Lead and Copper Rule MR 4 SDWIS / IL1530100 / 5000
2005 Public Notice Other 4 SDWIS / IL1530100 / 7500
2004 Xylenes, Total MR 7 SDWIS / IL1530100 / 2955
1992 cis-1,2-Dichloroethylene MR 3 SDWIS / IL1530100 / 2380
1992 o-Dichlorobenzene MR 3 SDWIS / IL1530100 / 2968
1992 1,1-Dichloroethylene MR 3 SDWIS / IL1530100 / 2977
1992 trans-1,2-Dichloroethylene MR 3 SDWIS / IL1530100 / 2979
1992 1,2-Dichloroethane MR 3 SDWIS / IL1530100 / 2980
1992 1,1,1-Trichloroethane MR 3 SDWIS / IL1530100 / 2981
1992 1,2-Dichloropropane MR 3 SDWIS / IL1530100 / 2983
1992 Trichloroethylene MR 3 SDWIS / IL1530100 / 2984
1992 Tetrachloroethylene MR 3 SDWIS / IL1530100 / 2987

How Mound City Compares

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

Metric Mound City Illinois avg Federal benchmark
Total violations 86 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 25.3% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 526 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 Mound City water safe to drink? ▼
Mound City (PWS ID: IL1530100) has 86 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 526 people using Groundwater sources.
How many people does Mound City serve? ▼
Mound City serves 526 people in Mound City, Illinois. It is a Local-owned system using Groundwater water sources with 166 service connections.
What type of violations does Mound City have? ▼
Mound City has 86 total violations: 0 health-based violations (MCL exceedances or treatment failures), 68 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Mound City water? ▼
No PFAS testing data is available for Mound City under the EPA's UCMR5 monitoring program.
What water source does Mound City use? ▼
Mound City 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.