Northwest Suburban Municipal Jawa
EPA ID: IL0315400 · 1 people served · 2 ZIP codes
Zero violations in five consecutive years of EPA monitoring — Northwest Suburban Municipal Jawa has held a clean track record across every reporting cycle in that span, with no enforcement activity of any kind on file for the full service population of 1 resident.
Data: EPA SDWIS Last verified: 2026-04-02
Service Area Demographics
The Northwest Suburban Municipal Jawa serves a community with a median household income of $95,240 and an estimated 32,485 residents across its service area. Approximately 81% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
Environmental Justice Note: 46% of the population in this service area is classified as disadvantaged under EPA's EJScreen criteria. Communities with higher disadvantaged populations often face disproportionate environmental and health burdens, including aging water infrastructure and limited resources for remediation.
🌊 Where Does Your Water Come From?
Northwest Suburban Municipal Jawa's water is drawn from rivers, lakes, or reservoirs. Surface water sources are more exposed to agricultural runoff, stormwater, and upstream discharges, but they typically receive more intensive treatment before reaching your tap.
About 1% of homes in Cook County, Illinois rely on private wells rather than public water systems. Private well owners are responsible for their own water testing and treatment.
Infrastructure Risk
Comparable Water Systems
Similar-sized systems in Illinois
Estimated Remediation Costs
Average estimated costs across ZIP codes served by this system
Based on national averages for common remediation projects. Actual costs vary by property. Only issues flagged by EPA, FEMA, or state data for each ZIP code are included.
System Overview
Northwest Suburban Municipal Jawa (EPA ID: IL0315400) is a community water system in Illinois that serves approximately 1 people from surface water sources.
This system provides water to 2 ZIP codes across 1 community.
Violation History
Lead & Copper
No Lead and Copper Rule sampling data available for this water system.
Need help with your water quality?
Typical cost: Water test: typically $20–$50 (DIY kit) · Professional inspection: $150–$400
Find the Right Water FilterFree tip: Let cold water run for 2 minutes before drinking — this helps flush lead from your pipes.
ZIP Codes Served
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Northwest Suburban Municipal Jawa (IL0315400) on EPA.gov.
Frequently Asked Questions
Is Northwest Suburban Municipal Jawa water safe to drink?
Based on EPA records, Northwest Suburban Municipal Jawa has no recorded violations in the past 5 years — a positive indicator of water quality management.
How many people does Northwest Suburban Municipal Jawa serve?
Northwest Suburban Municipal Jawa serves approximately 1 people across 2 ZIP codes in Illinois.
Where does Northwest Suburban Municipal Jawa get its water?
The primary water source is surface water.
Lead Service Line Inventory
Service line breakdown reported under the federal Lead and Copper Rule Improvements (LCRI) inventory requirement:
This system reports zero confirmed lead service lines in its inventory. Unknown-material counts may still warrant verification.
Federal LCRI rule (effective October 2024) requires every public water system to inventory its service lines and complete lead-line replacement within 10 years.
Source: EPA SDWIS Federal Service Line Inventory (Phase 2) · Submitted 2026
ZipCheckup is not affiliated with the utility or state agency. Inventory figures render verbatim from the public LCRI submission cited above; ZipCheckup does not perform inspections or replacements.