Illinois

State intelligence is assembled from EPA SDWA compliance records, American Community Survey demographic and economic indicators, FEMA NRI hazard exposure profiles, and state-reported financial disclosures. Each service market receives a MISI score (0–100) based on five families: Operational Stress, Capex Pressure, Revenue Fragility, Rate Constraint, and Governance Risk. Scores are deterministic and threshold-based. In v0.1.2, the headline composite remains a blended structural stress measure rather than a pure physical-condition index. A frozen national reference and a 50 percent single-factor cap reduce the dominance of near-universal and very rare factors, while the component bars continue to separate infrastructure, socioeconomic, and observability readings. Peer context is provided by percentile ranking within population-based cohorts.

Munimetric tracks infrastructure stress across 452 community drinking-water systems in Illinois, covering compliance conditions, capital needs, revenue and rate pressure, and governance risk. Use this page to research which systems face the highest structural stress and how Illinois compares nationally.

Which water systems in Illinois face the most infrastructure stress?

The highest-stress systems in Illinois are ranked by MISI score above. Stress reflects operational burden, capital gaps, revenue fragility, rate affordability constraints, and governance risk—not a single compliance event. In v0.1.2, the headline composite remains a blended structural stress measure rather than a pure physical-condition index. A frozen national reference and a 50 percent single-factor cap reduce the dominance of near-universal and very rare factors, while the component bars continue to separate infrastructure, socioeconomic, and observability readings.

How does Illinois compare to other states for drinking water infrastructure risk?

Illinois is compared against all 50 states and territories using average MISI score, market count, and band distribution. The state comparison table above shows where Illinois ranks nationally and how its average score compares.

Are there lead pipe or corrosion-related concerns in Illinois water systems?

Where lead and copper rule compliance data is available from EPA SDWA records, Munimetric factors it into the Operational Stress family. Specific lead service line inventories vary by system. Individual system profiles contain the most detailed compliance context available.

What compliance signals are active in Illinois?

Munimetric tracks signals such as compliance escalation, monitoring and reporting failures, data staleness, and financial stress indicators across Illinois systems. The signal frequency table above summarizes which signals are most prevalent statewide.

Does Munimetric track boil water advisories in Illinois?

Munimetric does not track real-time boil water advisories. For current advisories, contact your local water utility or state drinking water program. Munimetric monitors structural conditions—compliance posture, infrastructure stress, and governance risk—that provide broader context around system reliability.

• How Munimetric scores drinking water systems
• Browse all water system profiles in the Screener
• Track in Illinois
• Compare water infrastructure risk across all U.S. states
• Water infrastructure research & guides

• Murphysboro water system profile
• Coal City drinking water infrastructure profile
• Highland MISI score & system data
• Elgin water system profile
• Richton Park drinking water infrastructure profile
• Chicago MISI score & system data
• Benton water system profile
• Riverside drinking water infrastructure profile
• Steger MISI score & system data
• Batavia water system profile
• Morris drinking water infrastructure profile
• Troy MISI score & system data
• Calumet City water system profile
• Dixmoor drinking water infrastructure profile
• Joliet MISI score & system data