Annual Compliance Report for Public Water Supplies, 2003

              06/21/2004
State of Illinois
Public Water Supplies
Annual Compliance Report
Calendar Year 2003
The purpose of this annual compliance report is to satisfy the requirement of Section 1414(c)(3) of the
1996 Amendments to the Safe Drinking Water Act (SDWA). States with national primary
enforcement authority are to prepare, make readily available to the public, and submit to the
Administrator of the United States Environmental Protection Agency (USEPA) by July 1 of each year,
an annual report on violations occurring during the previous calendar year of national primary drinking
water regulations by public water systems (PWSs) in Illinois.
Annual Compliance Report Background
Each quarter, the Illinois EPA Environmental Protection Agency (IEPA) submits data to the Safe
Drinking Water Information System (SDWIS/FED), an automated database maintained by USEPA.
The data submitted include, but are not limited to, PWS inventory information, the incidence of
Maximum Contaminant Level, Maximum Residual Disinfectant Level, monitoring, and treatment
technique violations; and information on enforcement activity related to these violations. This report
provides the numbers of violations in each of six categories: maximum contaminant levels (MCLs),
maximum residual disinfectant level (MRDLs), treatment techniques (TT), variances and exemptions,
significant monitoring violations, and significant consumer notification violations.
Attached to this report as Appendix A is a listing for each contaminant regulated by the SDWA, the
numbers of maximum contaminant level (MCL), maximum residual disinfectant level (MRDL),
treatment technique (TT) and major monitoring and reporting (M/R) violations for each compliance
period during CY03, the number of violations that returned to compliance (RTC), and the number of
systems incurring violations. Appendix B is a detailed listing of the MCL, MRDL, and TT violations.
In Illinois, oversight of PWSs is divided between the Illinois Environmental Protection Agency
(Illinois EPA) and the Illinois Department of Public Health (Illinois DPH). Illinois EPA has been
designated as the lead agency for primary enforcement authority and oversees the community water
supply program (those supplies that serve 25 or more year round residents). Illinois DPH oversees the
non-transient, noncommunity water supplies (NTNC) that serve 25 or more of the same nonresidents at
least 60 days out of the year and include facilities such as day care centers, schools and factories.
Illinois DPH also oversees the transient non-community (TNC) water supplies that serve 25 or more
different nonresidents at least 60 days out of the year and include facilities such as campgrounds and
highway rest areas.
Page 1