Mark
EPA ID: IL1550250 · 555 people served · 1 ZIP code
ZipCheckup's reading of EPA SDWIS for Mark (IL1550250): 1 unresolved EPA violation on record. Where compliant utilities carry no open actions, Mark shows 1 active EPA violation in the federal database for a service population of approximately 555.
Data: EPA SDWIS
Service Area Map
Coverage area for Mark Source: EPA SDWIS service area boundaries.
Service area boundary
Service Area Demographics
The Mark serves a community with a median household income of $71,071 and an estimated 2,102 residents across its service area. Approximately 82% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
💧 Where Does Your Water Come From?
Mark's water is pumped from underground aquifers. Groundwater is naturally filtered through rock and soil, but it can be vulnerable to PFAS contamination, nitrates from agriculture, and industrial chemicals that seep into the water table.
Wastewater Proximity Note: This service area ranks in the 80th percentile nationally for proximity to wastewater discharge points.
Superfund Proximity Note: This service area ranks in the 60th percentile nationally for proximity to Superfund (NPL) sites. Groundwater sources near contaminated sites may face elevated risk from industrial chemicals.
Infrastructure Risk
Detected Contaminants
How Mark compares to EPA limits
What This Means For You
Haloacetic Acids (HAA5) at 1 mg/L exceeds the EPA maximum of 0.06 mg/L. Cancer risk; reproductive & developmental effects. Consider granular activated carbon (GAC) filtration.
Stage 1 DBP Rule at 2 mg/L exceeds the EPA maximum of mg/L.
Lead and Copper Rule at 1 mg/L exceeds the EPA maximum of mg/L.
Haloacetic Acids (HAA5) was detected in this water system. granular activated carbon (GAC) filtration can reduce exposure.
Find a certified water filter →Comparable Water Systems
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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
Mark (EPA ID: IL1550250) is a community water system in Illinois that serves approximately 555 people from groundwater sources.
This system serves ZIP code 61326 in Granville.
Violation History
Status breakdown for accepted records with record years 2021-2026: 3 resolved, 0 archived, 0 addressed, and 1 unaddressed. Under this source contract, current noncompliance is the sum of addressed and unaddressed records. Archived and resolved records are excluded from current noncompliance.
Recent Violations
| Date | Contaminant | Type | Status |
|---|---|---|---|
| January 1, 2026 | Stage 1 DBP Rule | Non-health-based | Unaddressed (current) |
| October 1, 2022 | Stage 1 DBP Rule | Non-health-based | Resolved |
| July 6, 2022 | Lead and Copper Rule | Non-health-based | Resolved |
| April 1, 2022 | Haloacetic Acids (HAA5) | Health-based | Resolved |
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| Stage 1 DBP Rule | Treatment Failure | 2 | No |
| Haloacetic Acids (HAA5) | Disinfection Byproducts | 1 | Yes |
| Lead and Copper Rule | Treatment Failure | 1 | No |
Health Risk Details
Haloacetic Acids (HAA5) (EPA limit: 0.06 mg/L)
Cancer risk; reproductive & developmental effects At-risk groups: pregnant women, infants, long-term consumers of chlorinated municipal water.
Removal methods: granular activated carbon (GAC), carbon block filter, reverse osmosis. Find the right filter →
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0 mg/L | No | N/A |
No copper action-level exceedance record appears for this PWSID in the accepted LCR snapshot. This does not establish a clean copper measurement.
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
Coverage: Service area ZIP codes sourced from EPA Community Water System Service Area Boundaries v3 (March 2026 release). These ZIPs reflect the actual deployment footprint recorded by IL or modeled from parcel and building-footprint data.
- 61326 - Granville
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Mark (IL1550250) on EPA.gov.
Frequently Asked Questions
Is Mark water safe to drink?
The accepted 2026Q2 ECHO snapshot shows 1 current noncompliance record and zero current records classified as health-based. That classification is not a property-specific water test or safety guarantee.
How many people does Mark serve?
Mark serves approximately 555 people across 1 ZIP code in Illinois.
Where does Mark get its water?
The primary water source is groundwater.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Mark (IL): 1 Health Violation. https://zipcheckup.com/water-system/il1550250/
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author = {{ZipCheckup}},
title = {{Mark (IL): 1 Health Violation}},
year = {n.d.},
url = {https://zipcheckup.com/water-system/il1550250/}
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What You Can Do
Test your water
Home test kits can detect lead, bacteria, and other contaminants at your tap. Find the right filter →
Check your specific ZIP code
Water quality can vary within a system. View nearest ZIP report →
Contact your utility
Mark (EPA ID: IL1550250) - request the latest Consumer Confidence Report or ask about specific contaminants.