Water Quality in Hunnewell, MO: 7 Violations — Grade C
Grade C · Score 68/100 · 1 water system · Updated 2026-05-03
Hunnewell'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
The public EPA compliance record for Hunnewell, MO holds 7 documented water violations — sourced from the federal Safe Drinking Water Information System, which tracks every reportable event for registered public water systems in the state.
Water Quality by ZIP Code in Hunnewell
Water quality varies across Hunnewell's 1 ZIP codes. Check your specific ZIP for detailed contaminant data.
| ZIP Code | Grade | Score | Violations | Health | |
|---|---|---|---|---|---|
| 63443 | C | 68 | 7 | 3 | View report → |
Violation Trend
EPA violations recorded for water systems serving Hunnewell.
Water Quality Overview
Hunnewell, Missouri receives a water quality grade of C with an overall score of 68 out of 100, based on EPA compliance data from the Safe Drinking Water Information System (SDWIS).
The 1 water system serving Hunnewell have accumulated 7 EPA violations, including 3 health-based violations. These violations are tracked across 1 ZIP codes serving approximately 184 people.
What Grade C Means
A grade of C indicates moderate compliance issues. Hunnewell'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 Hunnewell water systems is 0.0032 mg/L — within EPA limits. No ZIP codes exceed the EPA lead action level.
With 63% of homes built before 1986, Hunnewell 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
Hunnewell is in EPA Radon Zone 2 (Moderate risk). Testing is recommended, especially for homes with basements or ground-level living spaces.
Water Systems Serving Hunnewell
Hunnewell is served by 1 community water system regulated under the Safe Drinking Water Act. These systems collectively serve approximately 184 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 Hunnewell. Enforcement actions range from informal compliance assistance to formal orders and penalties.
How to Check Your Water in Hunnewell
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 Hunnewell Water Systems
The following contaminants have been detected or caused violations across Hunnewell's water systems:
| Contaminant | Category | MCL | Violations | ZIPs Affected | Health-Based |
|---|---|---|---|---|---|
| Total Trihalomethanes (TTHM) | Disinfection Byproducts | 0.08 mg/L | 3 | 1 | Yes |
| Lead and Copper Rule | Treatment Technique | N/A | 2 | 1 | No |
| Haloacetic Acids (HAA5) | Disinfection Byproducts | 0.06 mg/L | 1 | 1 | Yes |
MCL = Maximum Contaminant Level (EPA enforceable standard). Health-based violations indicate levels that may pose direct health risks.
Violation Trend Over Time
Year-by-year EPA violations recorded for water systems serving Hunnewell:
| Year | Total Violations | Health-Based |
|---|---|---|
| 2024 | 2 | 2 |
| 2025 | 3 | 3 |
Violations have increased from 2 in 2024 to 3 in 2025. This trend warrants monitoring.
EPA Enforcement History
The EPA and state regulators have taken 10 enforcement actions against water systems serving Hunnewell. Recent actions:
| Date | Action Type |
|---|---|
| 2025-08-22 | State Informal Action |
| 2025-08-22 | State Order Extension |
| 2025-08-14 | State Informal Enforcement |
| 2025-08-14 | State Filed Judgment |
| 2025-08-05 | State Order Extension |
| 2025-05-26 | State Order Extension |
| 2025-05-23 | State Informal Enforcement |
| 2025-05-23 | State Filed Judgment |
| 2025-03-25 | State Order Extension |
| 2025-03-11 | State Informal Enforcement |
Enforcement actions range from informal compliance assistance to formal orders and penalties. The most recent action was on 2025-08-22.
Hunnewell vs. Nearby Missouri Cities
How Hunnewell's water quality compares to similar cities in Missouri:
| City | Grade | Violations | Systems | Population |
|---|---|---|---|---|
| Hunnewell | C | 7 | 1 | 184 |
| Halltown | B | 2 | 1 | 185 |
| Harris | D | 0 | 1 | 183 |
| Lucerne | D | 0 | 1 | 183 |
Common Questions About Hunnewell Water
These are the most common questions residents search for about water quality in Hunnewell, Missouri:
Is Hunnewell water hard or soft? Water hardness varies by source. Hunnewell's 1 water system uses a single source. Check your ZIP code report for specific hardness data.
Can I drink Hunnewell tap water? Hunnewell's water receives a grade of C (68/100). There are 3 health-based violations — consider filtration.
What is the best water filter for Hunnewell? A NSF/ANSI 53-certified filter for lead removal is a good general choice. See our Water Filter Matcher for personalized recommendations.
Hunnewell vs. Missouri Average
Understanding how Hunnewell compares to the broader Missouri 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 Hunnewell.
ZIP Codes in Hunnewell
Hunnewell spans 1 ZIP code. The ZIP with the lowest water quality score is 63443. 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.