Gillespie
Community water system in Macoupin County, Illinois, serving 3,737 people from surface water. 8 rules violated in the past three years, 3 still unresolved. Owned by local government.
Quarterly compliance history
2023
2023
2024
2024
2024
2024
2025
2025
2025
2025
2026
2026
2026
Currently in violation
EPA data updated Oct 7, 2026
Stage 2 Disinfectants and Disinfection Byproducts Rule
Monitoring and Reporting
6 violations, Jan 2024 to open · 2 contaminants
Stage 2 Disinfectants and Disinfection Byproducts Rule
Monitoring and Reporting6 violations, Jan 2024 to open · 2 contaminants
Monitoring and Reporting: 6 violations, 2 still open, Jan 2024 to open. The system did not complete required monitoring, or did not report the results on time. This does not show that a contaminant was found.
Contaminants on the record: Total Haloacetic Acids (HAA5), TTHM (Total Trihalomethanes).
Lead and Copper Rule Revisions
Reporting ViolationTreatment Technique Violation
Health-based
3 violations, Oct 2024 to open
Lead and Copper Rule Revisions
Reporting ViolationTreatment Technique Violation Health-based3 violations, Oct 2024 to open
Treatment Technique Violation, health-based: 1 violation, open since Oct 2024. The system did not carry out a required treatment process or corrective action.
Reporting Violation: 2 violations, open since Oct 2024. The system did not report required information on time.
What the rule requires: The 2021 LCRR updated the 1991 LCR with mandatory lead service line inventories and replacement planning, a new 'trigger level' at 10 ppb requiring optimization, and strengthened public education. The 2024 Lead and Copper Rule Improvements (LCRI) further requires replacing all lead service lines within 10 years.
Health effects: Same as Lead and Copper Rule (5000). Violations typically reflect failure to complete the required lead service line inventory or submit a required replacement plan. Lead service lines are the primary source of lead at the tap in many older systems. Limit: Lead action level: 15 ppb (trigger level: 10 ppb); copper action level: 1.3 mg/L
About this rule
Public Notice Rule and Revised PN Rule
Other Violation
1 violation, Aug 2025 to open · Public Notification Rule
Public Notice Rule and Revised PN Rule
Other Violation1 violation, Aug 2025 to open · Public Notification Rule
Other Violation: 1 violation, open since Aug 2025. A requirement other than monitoring, reporting, or a contaminant limit, such as public notice or the annual water quality report.
Contaminant on the record: Public Notification Rule.
Also violated in the past three years
Jul to Sep 2023 to Jul to Sep 2026
Revised Total Coliform Rule
Monitoring Violation
1 violation, Feb 2024 to Mar 2024
Revised Total Coliform Rule
Monitoring Violation1 violation, Feb 2024 to Mar 2024
Monitoring Violation: 1 violation, Feb 2024 to Mar 2024. The system did not complete required monitoring. This does not show that a contaminant was found.
What the rule requires: The 2013 RTCR (effective 2016) replaced the original TCR. It triggers automatic E. coli testing whenever total coliform is found. A single E. coli-positive sample is an acute MCL violation. It also requires systems exceeding 5% total coliform-positive samples to conduct a formal assessment and correct any deficiencies, helping prevent contamination before it escalates.
About this rule
Interim and Long Term 1 Enhanced Surface Water Treatment Rule
Monitoring and Reporting
1 violation, Feb 2026 to Apr 2026 · Interim Enhanced Surface Water Treatment Rule
Interim and Long Term 1 Enhanced Surface Water Treatment Rule
Monitoring and Reporting1 violation, Feb 2026 to Apr 2026 · Interim Enhanced Surface Water Treatment Rule
Monitoring and Reporting: 1 violation, Feb 2026 to Apr 2026. The system did not complete required monitoring, or did not report the results on time. This does not show that a contaminant was found.
Contaminant on the record: Interim Enhanced Surface Water Treatment Rule.
Long Term 2 Enhanced Surface Water Treatment Rule
Treatment Technique Violation
Health-based
1 violation, Jan 2026 to Mar 2026
Long Term 2 Enhanced Surface Water Treatment Rule
Treatment Technique Violation Health-based1 violation, Jan 2026 to Mar 2026
Treatment Technique Violation, health-based: 1 violation, Jan 2026 to Mar 2026. The system did not carry out a required treatment process or corrective action.
What the rule requires: The LT2 ESWTR (2006) required all surface water and GWUDI systems to monitor source water for Cryptosporidium, then apply additional treatment based on measured concentrations. Higher-bin systems (more oocysts detected) must install advanced treatment — UV disinfection, ozone, or membrane filtration — beyond the original SWTR requirements.
Health effects: Cryptosporidium is a chlorine-resistant protozoan parasite that causes cryptosporidiosis — severe watery diarrhea, cramping, nausea, and fever. In immunocompromised individuals (HIV/AIDS, transplant recipients), it can be life-threatening and prolonged. Infants and the elderly are also at elevated risk. LT2 violations indicate failure to complete monitoring or apply the required additional treatment tier. Limit: Treatment technique — additional Cryptosporidium treatment based on bin classification
About this rule
Surface Water Treatment Rule
Monitoring and Reporting
1 violation, Jan 2026 to Mar 2026
Surface Water Treatment Rule
Monitoring and Reporting1 violation, Jan 2026 to Mar 2026
Monitoring and Reporting: 1 violation, Jan 2026 to Mar 2026. The system did not complete required monitoring, or did not report the results on time. This does not show that a contaminant was found.
What the rule requires: All systems using surface water (rivers, lakes, reservoirs) or groundwater under surface influence (GWUDI) must filter and disinfect. Treatment technique violations mean the system failed to maintain adequate disinfectant residual, exceeded turbidity limits, or lacked required permits. Snowmelt and storm events can raise turbidity and pathogen loads in surface water.
About this rule
Stage 1 Disinfectants and Disinfection Byproducts Rule
Monitoring and Reporting
1 violation, Jan 2024 to Mar 2024 · Chloramine
Stage 1 Disinfectants and Disinfection Byproducts Rule
Monitoring and Reporting1 violation, Jan 2024 to Mar 2024 · Chloramine
Monitoring and Reporting: 1 violation, Jan 2024 to Mar 2024. The system did not complete required monitoring, or did not report the results on time. This does not show that a contaminant was found.
Contaminant on the record: Chloramine.
Lead and copper at the tap
The 90th percentile of the tap samples the system collected in its latest monitoring period, against EPA's action level. Levels vary between homes.
Action level 0.015 mg/L · Jan 2021 to Dec 2023
About this data
Rules violated and the list above come from EPA's SDWIS violation records, one row per violation and contaminant, grouped by the rule each row belongs to. A violation counts when its non-compliance period ended on or after Jul 1, 2023, the start of the thirteen quarters ECHO's three-year figures cover, or is still open; it is unresolved when it was still open at EPA's data refresh on Oct 7, 2026. EPA's rule code 500, "Not Regulated", is left out, as in ECHO's counts. Each rule's violation count is EPA's, and one rule can carry several: a missed monitoring round for a group of contaminants is one violation per contaminant and period. Category names are EPA's violation categories.
ECHO's own summary count of rules violated agrees with this grouping for 98.8% of active systems nationally, and its count of rules being violated for 98.7%; where they differ, the figures here follow the rows listed.
A measured value shown with a rule is the sample result EPA recorded with that violation (SDWIS viol_measure), against the limit EPA recorded on the same row (state_mcl), both in EPA's unit as written; violations without a recorded value, such as missed monitoring, show none. Other measured contaminant levels are not part of this record; each system publishes them in its annual Consumer Confidence Report.
Lead and copper are the newest 90th-percentile results in EPA's SDWA data download (LCR_SAMPLES, codes PB90 and CU90): for each monitoring period a system reports the 90th-percentile value of its tap samples, which EPA compares with its action level of 0.015 mg/L for lead and 1.3 mg/L for copper (40 CFR 141.80). A result is not a measurement of any one tap.
Service area from EPA's Public Water System Service Area Boundaries dataset: Random Forest method, Federal agency. The system's location is the centre of the service area EPA publishes for the system.
Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The Illinois records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet.