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Community Water System · PWS IL1977490

Southeast Joliet SD

Joliet, Illinois 60433 - drinking water served from groundwater sources to 2,000 people, tracked in EPA SDWIS and UCMR5.

2,000
People served
338
EPA violations
12
Health-based
Untested
UCMR5 result

The verdict

EPA records 338 drinking-water violations at Southeast Joliet SD, 4% of them health-based - above the Illinois per-system average.

338
Total EPA violations on record
4%
Health-based (MCL / treatment failure)
2,000
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Southeast Joliet SD

Southeast Joliet SD is a local-owned community water system that delivers drinking water to 2,000 residents in Joliet, Illinois (Will County) through 627 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 338 total violations for this system , of which 12 (4%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 289 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 40 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%).

Southeast Joliet SD's 338 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
2,000
Total Violations
338
Health-Based Violations
12
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
627
County
Will
School/Daycare
No
MCL Violations
10
Monitoring Violations
289
Treatment Tech Violations
2

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 40 2013
Chlorine MR 24 2025
1,2-Dichloroethane MR 13 1994
Trichloroethylene MR 13 1994
p-Dichlorobenzene MR 13 1994
1,1-Dichloroethylene MR 13 1994
1,1,1-Trichloroethane MR 13 1994
Carbon tetrachloride MR 13 1994
Benzene MR 13 1994
Revised Total Coliform Rule MON 13 2025
cis-1,2-Dichloroethylene MR 10 1994
Xylenes, Total MR 10 1994
1,2-Dichloropropane MR 10 1994
CHLOROBENZENE MR 10 1994
Ethylbenzene MR 10 1994
trans-1,2-Dichloroethylene MR 10 1994
Toluene MR 10 1994
Styrene MR 10 1994
o-Dichlorobenzene MR 10 1994
Coliform (TCR) MCL 10 1999
Tetrachloroethylene MR 10 1994
Public Notice Other 7 2025
LEAD AND COPPER RULE REVISIONS RPT 4 2025
Nitrate MR 3 1994
1,2,4-Trichlorobenzene MR 3 1994
1,1,2-Trichloroethane MR 3 1994
TTHM MR 3 2025
Total Haloacetic Acids (HAA5) MR 3 2025
DICHLOROMETHANE MR 3 1994
Lead and Copper Rule MR 2 1994

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 Southeast Joliet SD.

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 IL1977490 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 Southeast Joliet SD 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 Chlorine MR 24 SDWIS / IL1977490 / 0999
2025 Revised Total Coliform Rule MON 13 SDWIS / IL1977490 / 8000
2025 Public Notice Other 7 SDWIS / IL1977490 / 7500
2025 LEAD AND COPPER RULE REVISIONS RPT 4 SDWIS / IL1977490 / 5200
2025 TTHM MR 3 SDWIS / IL1977490 / 2950
2025 Total Haloacetic Acids (HAA5) MR 3 SDWIS / IL1977490 / 2456
2025 Consumer Confidence Rule Other 1 SDWIS / IL1977490 / 7000
2024 LEAD AND COPPER RULE REVISIONS TT 2 SDWIS / IL1977490 / 5200
2013 Coliform (TCR) MR 40 SDWIS / IL1977490 / 3100
1999 Coliform (TCR) MCL 10 SDWIS / IL1977490 / 3100
1994 1,2-Dichloroethane MR 13 SDWIS / IL1977490 / 2980
1994 Trichloroethylene MR 13 SDWIS / IL1977490 / 2984
1994 p-Dichlorobenzene MR 13 SDWIS / IL1977490 / 2969
1994 1,1-Dichloroethylene MR 13 SDWIS / IL1977490 / 2977
1994 1,1,1-Trichloroethane MR 13 SDWIS / IL1977490 / 2981

How Southeast Joliet SD Compares

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

Metric Southeast Joliet SD Illinois avg Federal benchmark
Total violations 338 69.4 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 12 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 2,000 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 Southeast Joliet SD water safe to drink? ▼
Southeast Joliet SD (PWS ID: IL1977490) has 338 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 2,000 people using Groundwater sources.
How many people does Southeast Joliet SD serve? ▼
Southeast Joliet SD serves 2,000 people in Joliet, Illinois. It is a Local-owned system using Groundwater water sources with 627 service connections.
What type of violations does Southeast Joliet SD have? ▼
Southeast Joliet SD has 338 total violations: 12 health-based violations (MCL exceedances or treatment failures), 289 monitoring/reporting violations, and 2 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Southeast Joliet SD water? ▼
No PFAS testing data is available for Southeast Joliet SD under the EPA's UCMR5 monitoring program.
What water source does Southeast Joliet SD use? ▼
Southeast Joliet SD 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.