Water Quality in Poplar Grove, IL: 5 Violations — Grade C
Grade C · Score 65/100 · 5 water systems · Updated 2026-05-03
Poplar Grove's water has moderate compliance issues. Residents in affected areas should consider filtration.
Data: EPA Safe Drinking Water Information System (SDWIS) Last verified: 2026-05-03
Federal EPA data for Poplar Grove, IL shows 5 water compliance events in the record — the table below identifies system names and violation types.
Water Quality by ZIP Code in Poplar Grove
Water quality varies across Poplar Grove's 1 ZIP codes. Check your specific ZIP for detailed contaminant data.
| ZIP Code | Grade | Score | Violations | Health | |
|---|---|---|---|---|---|
| 61065 | C | 65 | 5 | 0 | View report → |
Water Quality Overview
Poplar Grove, Illinois receives a water quality grade of C with an overall score of 65 out of 100, based on EPA compliance data from the Safe Drinking Water Information System (SDWIS).
The 5 water systems serving Poplar Grove have accumulated 5 EPA violations (all monitoring/reporting type). These violations are tracked across 1 ZIP codes serving approximately 5,549 people.
What Grade C Means
A grade of C indicates moderate compliance issues. Poplar Grove's water systems have some violations that warrant attention. While the water may still be safe for most people, residents in affected ZIP codes should consider additional testing or filtration.
Lead Levels
The average 90th percentile lead level across Poplar Grove water systems is 0.0007 mg/L — within EPA limits. No ZIP codes exceed the EPA lead action level.
Radon Risk
Poplar Grove is in EPA Radon Zone 1 (High risk). The EPA recommends all homes in Zone 1 areas be tested for radon. Radon is the second leading cause of lung cancer after smoking.
Water Systems Serving Poplar Grove
Poplar Grove is served by 5 community water systems regulated under the Safe Drinking Water Act. These systems collectively serve approximately 5,549 people across 1 ZIP codes.
Each water system is identified by a Public Water System ID (PWSID) and is required to:
- Test for over 90 regulated contaminants on a regular schedule
- Report results to the EPA and state regulators
- Issue an annual Consumer Confidence Report (CCR) to all customers
- Take corrective action when violations occur
The EPA has taken 10 enforcement actions against water systems serving Poplar Grove. Enforcement actions range from informal compliance assistance to formal orders and penalties.
How to Check Your Water in Poplar Grove
Enter your ZIP code on ZipCheckup to see your specific water system data, including contaminant levels, violation history, and safety scores
Request your CCR — your water utility must provide an annual Consumer Confidence Report with detailed test results for all monitored contaminants
Get a home test — certified kits cost $20–$50 and test for lead, bacteria, and common contaminants. Professional lab tests ($150–$400) cover a broader panel
Consider filtration — NSF-certified filters can remove specific contaminants. Reverse osmosis removes the broadest range; activated carbon is effective for chlorine and many organics
Check for advisories — monitor your local utility website and local news for boil water advisories or system alerts
Contaminants Detected in Poplar Grove Water Systems
The following contaminants have been detected or caused violations across Poplar Grove's water systems:
| Contaminant | Category | MCL | Violations | ZIPs Affected | Health-Based |
|---|---|---|---|---|---|
| Surface Water Treatment Rule | Treatment Technique | N/A | 3 | 1 | No |
| Haloacetic Acids (HAA5) | Disinfection Byproducts | 0.06 mg/L | 2 | 1 | No |
MCL = Maximum Contaminant Level (EPA enforceable standard). Health-based violations indicate levels that may pose direct health risks.
EPA Enforcement History
The EPA and state regulators have taken 8 enforcement actions against water systems serving Poplar Grove. Recent actions:
| Date | Action Type |
|---|---|
| 2025-05-21 | State Informal Action |
| 2025-04-29 | State Informal Action |
| 2025-01-21 | State Informal Action |
| 2025-01-21 | State Informal Enforcement |
| 2024-10-15 | State Informal Action |
| 2024-10-15 | State Informal Enforcement |
| 2024-07-26 | State Order Extension |
| 2023-08-22 | State Informal Action |
Enforcement actions range from informal compliance assistance to formal orders and penalties. The most recent action was on 2025-05-21.
Poplar Grove vs. Nearby Illinois Cities
How Poplar Grove's water quality compares to similar cities in Illinois:
| City | Grade | Violations | Systems | Population |
|---|---|---|---|---|
| Poplar Grove | C | 5 | 5 | 5,549 |
| Watseka | D | 5 | 2 | 5,555 |
| Spring Valley | B | 0 | 1 | 5,582 |
| Hardin | D | 0 | 2 | 5,514 |
Common Questions About Poplar Grove Water
These are the most common questions residents search for about water quality in Poplar Grove, Illinois:
Is Poplar Grove water hard or soft? Water hardness varies by source. Poplar Grove's 5 water systems use multiple sources. Check your ZIP code report for specific hardness data.
Can I drink Poplar Grove tap water? Poplar Grove's water receives a grade of C (65/100). No health-based violations have been recorded, but home testing is always recommended.
What is the best water filter for Poplar Grove? A NSF/ANSI 53-certified filter for lead removal is a good general choice. See our Water Filter Matcher for personalized recommendations.
Poplar Grove vs. Illinois Average
Understanding how Poplar Grove compares to the broader Illinois average helps contextualize your local water quality. Factors like water source, treatment methods, and infrastructure age all contribute to differences between cities in the same state.
To see how individual neighborhoods compare, check the ZIP code reports below — water quality can vary significantly even within Poplar Grove.
ZIP Codes in Poplar Grove
Poplar Grove spans 1 ZIP code. The ZIP with the lowest water quality score is 61065. Each ZIP code has its own water quality profile based on the specific water system serving that area. Check each ZIP code for detailed contaminant data, violation history, and system information.
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- Lead/copper: EPA Lead and Copper Rule sampling data
- Radon: EPA Map of Radon Zones
- Enforcement: EPA ECHO database
- Filter recommendations: NSF/ANSI certified products
Updated daily.