A94/100
Lees Summit Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 108,172 residents · Missouri
What's In Lees Summit's Tap Water?
69
Contaminants Tested
0
Exceed EPA Limits
0
Above EPA Goals
EPA Violation History
5
Violations (last 5yr)
0
Unresolved
0
Health-Related
TIER 3Resolved
Monitoring Violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: May 1, 2024 – May 31, 2024Rule: Total Coliform RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved
Disinfection byproduct treatment technique failure
When: June 28, 2023 – September 19, 2023Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved
Monitoring Violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: May 1, 2022 – May 31, 2022Rule: Total Coliform RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved
Failed Level 2 Assessment under Revised Total Coliform Rule
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: October 1, 2021 – December 31, 2021Rule: Stage 2 DBPREnforcement: Resolving — corrective action underway
TIER 3Resolved
Failed Level 2 Assessment under Revised Total Coliform Rule
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: October 1, 2021 – December 31, 2021Rule: Stage 2 DBPREnforcement: Resolving — corrective action underway
Understanding violation severity
Tier 1Urgent health risk. Utility must notify all customers within 24 hours.Tier 2Important health or treatment issue. Customers notified within 30 days.Tier 3Administrative or monitoring issue. Reported in the annual water quality report.
Source: EPA Safe Drinking Water Information System (SDWIS) · Updated quarterly
Water Utility Details
LEES SUMMIT PWS
Population Served
99,400
Water Source
Purchased Surface Water
System ID
MO1010459
JACKSON COUNTY PWSD 15
Population Served
8,772
Water Source
Purchased Groundwater
System ID
MO1024281
Frequently Asked Questions About Lees Summit Water
Is Lees Summit tap water safe to drink?
Lees Summit, Missouri tap water receives a grade of A (94/100), which is considered excellent. Out of 76 contaminants tested, none exceed EPA maximum contaminant levels (MCLs). While the water meets federal standards, some residents may still choose to use a filter for additional peace of mind.
What contaminants are in Lees Summit's water?
76 contaminants were tested in Lees Summit's water supply. No contaminants exceed EPA legal limits (MCLs) or health goals (MCLGs), which is a positive indicator of water quality.
Does Lees Summit have any water quality violations?
Yes, Lees Summit has 11 EPA violation(s) on record, with the most recent in 2024. Violation types include MON, Other, MR. None of these are classified as health-based violations.
Do I need a water filter in Lees Summit?
Lees Summit water meets EPA standards, so a filter is not strictly necessary. However, some residents prefer the added security of a water filter. EPA health goals (MCLGs) are stricter than legal limits and are set at levels with zero expected health risk. All contaminants are within health goals.
Where does Lees Summit's tap water come from?
Lees Summit's drinking water is sourced from purchased surface water and supplied by LEES SUMMIT PWS and 1 other water system(s). The system serves approximately 108,172 people. Surface water sources include rivers, lakes, and reservoirs.
How often is Lees Summit's water tested?
Under the Safe Drinking Water Act (SDWA), water utilities are required to regularly test for over 90 contaminants. Testing frequency varies by contaminant — some are tested monthly, others quarterly or annually. Lees Summit's water systems must report results to the EPA and publish an annual Consumer Confidence Report (CCR). The data on this page reflects the latest available EPA testing data.
How does Lees Summit's water compare to other cities in Missouri?
Lees Summit's water quality score of 94/100 earns a grade of A, which is considered excellent. This places Lees Summit among the better-performing water systems in Missouri. Visit our Missouri state page to see how all cities in the state compare.
What should I do if I'm concerned about Lees Summit's water quality?
If you have concerns about Lees Summit's tap water, consider these steps: (1) Request your utility's annual Consumer Confidence Report for detailed local data. (2) Get your water independently tested through a state-certified laboratory. (3) Consider an NSF-certified water filter rated for the contaminants found in your area. (4) Contact your water utility (LEES SUMMIT PWS) with specific questions. (5) Report water quality issues to your state drinking water program or the EPA Safe Drinking Water Hotline at 800-426-4791.