Water Quality in Mansfield, IL: No Violations — Grade B
Grade B · Score 70/100 · 1 water system · Updated 2026-05-03
Mansfield's water is mostly safe. Minor violations exist but are primarily monitoring-related.
Data: EPA Safe Drinking Water Information System (SDWIS) Last verified: 2026-05-03
What does the EPA compliance record show for Mansfield, IL? Zero violations documented across 1 water system, with all health-based and monitoring thresholds met across all available federal records.
Water Quality by ZIP Code in Mansfield
Water quality varies across Mansfield's 1 ZIP codes. Check your specific ZIP for detailed contaminant data.
| ZIP Code | Grade | Score | Violations | Health | |
|---|---|---|---|---|---|
| 61854 | B | 70 | 0 | 0 | View report → |
Water Quality Overview
Mansfield, Illinois receives a water quality grade of B with an overall score of 70 out of 100, based on EPA compliance data from the Safe Drinking Water Information System (SDWIS).
No EPA violations have been recorded for the 1 water system serving Mansfield. This is a positive indicator, though it does not guarantee the absence of all contaminants — some substances (like PFAS) are not yet fully regulated.
What Grade B Means
A grade of B indicates good compliance with EPA drinking water standards. While not perfect, Mansfield's water systems meet the vast majority of federal requirements. Minor violations may exist but typically relate to monitoring or reporting rather than health-based standards.
Lead Levels
The average 90th percentile lead level across Mansfield water systems is 0.0007 mg/L — within EPA limits. No ZIP codes exceed the EPA lead action level.
With 73% of homes built before 1986, Mansfield has a higher-than-average risk of lead from older plumbing. Lead solder was banned in 1986, and homes built before this date may have lead in pipes, solder joints, or fixtures.
Radon Risk
Mansfield 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 Mansfield
Mansfield is served by 1 community water system regulated under the Safe Drinking Water Act. These systems collectively serve approximately 939 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
How to Check Your Water in Mansfield
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
Mansfield vs. Nearby Illinois Cities
How Mansfield's water quality compares to similar cities in Illinois:
| City | Grade | Violations | Systems | Population |
|---|---|---|---|---|
| Mansfield | B | 0 | 1 | 939 |
| Kinmundy | B | 1 | 1 | 940 |
| Goodfield | C | 0 | 1 | 936 |
| Iroquois | D | 0 | 1 | 950 |
Common Questions About Mansfield Water
These are the most common questions residents search for about water quality in Mansfield, Illinois:
Is Mansfield water hard or soft? Water hardness varies by source. Mansfield's 1 water system uses a single source. Check your ZIP code report for specific hardness data.
Can I drink Mansfield tap water? Mansfield's water receives a grade of B (70/100). No health-based violations have been recorded, but home testing is always recommended.
What is the best water filter for Mansfield? A NSF/ANSI 53-certified filter for lead removal is a good general choice. See our Water Filter Matcher for personalized recommendations.
Mansfield vs. Illinois Average
Understanding how Mansfield 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 Mansfield.
ZIP Codes in Mansfield
Mansfield spans 1 ZIP code. 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.
Frequently Asked Questions
Your Water is Safe — Here's How to Keep It That Way
Grade B is excellent news. Here's what proactive homeowners do to maintain water quality:
Annual Water Testing
EPA recommends annual testing even with clean water. Home test kits: $20-$50. Catches changes before they become problems.
Maintenance Filtration
A basic carbon filter removes chlorine taste and catches emerging contaminants like PFAS that aren't yet fully regulated.
Plumbing Check
Even safe city water picks up lead from home pipes. If your home was built before 1986, a one-time pipe inspection is recommended.