Water Quality in Lees Summit, MO: 42 Violations — Grade C
Grade C · Score 64/100 · 3 water systems · Updated 2026-05-03
Lees Summit'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
Lees Summit, MO — 42 compliance events documented in the federal drinking water record.
Water Quality Map: Lees Summit, MO
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Water Quality by ZIP Code in Lees Summit
Water quality varies across Lees Summit's 7 ZIP codes. Check your specific ZIP for detailed contaminant data.
| ZIP Code | Grade | Score | Violations | Health | |
|---|---|---|---|---|---|
| 64063 | C | 62 | 6 | 0 | View report → |
| 64081 | C | 62 | 6 | 0 | View report → |
| 64086 | C | 62 | 6 | 0 | View report → |
| 64002 | C | 63 | 6 | 0 | View report → |
| 64065 | C | 63 | 6 | 0 | View report → |
| 64064 | C | 67 | 6 | 0 | View report → |
| 64082 | C | 67 | 6 | 0 | View report → |
Water Quality Overview
Lees Summit, Missouri receives a water quality grade of C with an overall score of 64 out of 100, based on EPA compliance data from the Safe Drinking Water Information System (SDWIS).
The 3 water systems serving Lees Summit have accumulated 42 EPA violations (all monitoring/reporting type). These violations are tracked across 7 ZIP codes serving approximately 117,174 people.
What Grade C Means
A grade of C indicates moderate compliance issues. Lees Summit'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 Lees Summit water systems is 0.0015 mg/L — within EPA limits. No ZIP codes exceed the EPA lead action level.
Radon Risk
Lees Summit 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 Lees Summit
Lees Summit is served by 3 community water systems regulated under the Safe Drinking Water Act. These systems collectively serve approximately 117,174 people across 7 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 70 enforcement actions against water systems serving Lees Summit. Enforcement actions range from informal compliance assistance to formal orders and penalties.
How to Check Your Water in Lees Summit
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 Lees Summit Water Systems
The following contaminants have been detected or caused violations across Lees Summit's water systems:
| Contaminant | Category | MCL | Violations | ZIPs Affected | Health-Based |
|---|---|---|---|---|---|
| Surface Water Treatment Rule | Treatment Technique | N/A | 14 | 7 | No |
| Total Trihalomethanes (TTHM) | Disinfection Byproducts | 0.08 mg/L | 7 | 7 | No |
| Lead and Copper Rule | Treatment Technique | N/A | 7 | 7 | 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 10 enforcement actions against water systems serving Lees Summit. Recent actions:
| Date | Action Type |
|---|---|
| 2025-05-07 | State Order Extension |
| 2024-07-15 | State Order Extension |
| 2024-07-02 | State Informal Action |
| 2024-07-02 | State Informal Enforcement |
| 2023-09-26 | State Informal Action |
| 2023-09-19 | State Order Extension |
| 2022-09-07 | State Order Extension |
| 2022-08-03 | State Informal Action |
| 2022-06-28 | State Order Extension |
| 2022-06-27 | State Informal Action |
Enforcement actions range from informal compliance assistance to formal orders and penalties. The most recent action was on 2025-05-07.
Lees Summit vs. Nearby Missouri Cities
How Lees Summit's water quality compares to similar cities in Missouri:
| City | Grade | Violations | Systems | Population |
|---|---|---|---|---|
| Lees Summit | C | 42 | 3 | 117,174 |
| Independence | C | 9 | 3 | 120,830 |
| Harrisburg | D | 0 | 1 | 126,254 |
| Joplin | C | 24 | 5 | 104,908 |
Recommended Water Filters for Lees Summit
Based on contaminants detected in Lees Summit's water supply, these filter types are recommended:
Reverse Osmosis (under-sink)
- Removes: Lead
- Effectiveness: 95-99%
- Cost range: $150–$500
- Certification: NSF/ANSI 58
- Recommended products:
- Waterdrop G3P800
- Aquasana AQ-5200
- Clearly Filtered Pitcher
Water Quality by ZIP Code in Lees Summit
Water quality varies across Lees Summit's ZIP codes. The table below shows the worst-scoring and best-scoring areas:
| ZIP Code | Score | Grade | Violations | Health-Based |
|---|---|---|---|---|
| 64063 | 62 | C | 6 | 0 |
| 64081 | 62 | C | 6 | 0 |
| 64086 | 62 | C | 6 | 0 |
| 64002 | 63 | C | 6 | 0 |
| 64065 | 63 | C | 6 | 0 |
| 64064 | 67 | C | 6 | 0 |
| 64082 | 67 | C | 6 | 0 |
Common Questions About Lees Summit Water
These are the most common questions residents search for about water quality in Lees Summit, Missouri:
Is Lees Summit water hard or soft? Water hardness varies by source. Lees Summit's 3 water systems use multiple sources. Check your ZIP code report for specific hardness data.
Can I drink Lees Summit tap water? Lees Summit's water receives a grade of C (64/100). No health-based violations have been recorded, but home testing is always recommended.
What is the best water filter for Lees Summit? Based on detected contaminants, a reverse osmosis (under-sink) filter is most recommended. See our Water Filter Matcher for personalized recommendations.
Lees Summit vs. Missouri Average
Understanding how Lees Summit 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 Lees Summit.
ZIP Codes in Lees Summit
Lees Summit spans 7 ZIP codes. The ZIP with the lowest water quality score is 64002. 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.