Chadwick
Community water system in Chadwick, Carroll County, Illinois, serving 523 people from ground water. 2 rules violated in the past three years, 1 still unresolved. Owned by local government.
Quarterly compliance history
2023
2023
2024
2024
2024
2024
2025
2025
2025
2025
2026
2026
2026
Still in violation
EPA data updated Oct 7, 2026
Lead and Copper Rule Revisions
Treatment Technique Violation
Health-based
1 violation, Oct 2024 to open
Lead and Copper Rule Revisions
Treatment Technique Violation Health-based1 violation, 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.
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 ruleAlso violated in the past three years
Jul to Sep 2023 to Jul to Sep 2026
Stage 1 Disinfectants and Disinfection Byproducts Rule
Monitoring and Reporting
1 violation, Oct 2023 to Nov 2023 · Chlorine (MRDL)
Stage 1 Disinfectants and Disinfection Byproducts Rule
Monitoring and Reporting1 violation, Oct 2023 to Nov 2023 · Chlorine (MRDL)
Monitoring and Reporting: 1 violation, Oct 2023 to Nov 2023. 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: Chlorine (MRDL).
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.
Measured contaminant levels are not part of this record; each system publishes them in its annual Consumer Confidence Report.
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. Retrieved from ECHO on Oct 11, 2026.