D21/100
Louisville Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 13,382 residents · Mississippi
What's In Louisville's Tap Water?
31
Contaminants Tested
0
Exceed EPA Limits
0
Above EPA Goals
EPA Violation History
2
Violations (last 5yr)
2
Unresolved
0
Health-Related
TIER 3Unresolved
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: January 1, 2024 – December 31, 2024Rule: Stage 2 DBPREnforcement: Informal — resolved cooperativelyVerify on EPA.gov
TIER 3Unresolved
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: January 1, 2024 – December 31, 2024Rule: Stage 2 DBPREnforcement: Informal — resolved cooperativelyVerify on EPA.gov
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
BOND WATER ASSOCIATION #1
Population Served
1,299
Water Source
Groundwater
System ID
MS0800001
CITY OF LOUISVILLE
Population Served
7,545
Water Source
Groundwater
System ID
MS0800004
HIGHPOINT WATER ASSOCIATION #1
Population Served
2,124
Water Source
Groundwater
System ID
MS0800011
ELLISON RIDGE WATER ASSN
Population Served
1,287
Water Source
Groundwater
System ID
MS0800013
NANIH-WAIYA WATER ASSOCIATION
Population Served
1,127
Water Source
Groundwater
System ID
MS0800015
Frequently Asked Questions About Louisville Water
Is Louisville tap water safe to drink?
Louisville, Mississippi tap water receives a grade of D (21/100), which is considered poor. 1 contaminant(s) exceed EPA maximum contaminant levels and 367 violation(s) are on record. Residents should consider using an NSF-certified water filter to reduce contaminant exposure.
What contaminants are in Louisville's water?
Of the 32 contaminants tested in Louisville's water supply, the most notable include Copper (90th percentile), Lead (90th percentile). 1 contaminant(s) exceed EPA legal limits (MCLs). 2 contaminant(s) exceed EPA health goals (MCLGs), which are non-enforceable targets set at levels with no known health risk.
Does Louisville have any water quality violations?
Yes, Louisville has 367 EPA violation(s) on record, with the most recent in 2024. Violation types include MR, Other, MCL. 2 of these are health-based violations, which are the most serious category.
Do I need a water filter in Louisville?
Based on EPA data, using a water filter in Louisville is recommended. 1 contaminant(s) exceed legal limits. An NSF-certified filter — such as a reverse osmosis or activated carbon system — can effectively reduce many common contaminants. Choose a filter certified to remove the specific contaminants found in your area.
Where does Louisville's tap water come from?
Louisville's drinking water is sourced from groundwater and supplied by BOND WATER ASSOCIATION #1 and 4 other water system(s). The system serves approximately 13,382 people. Groundwater is pumped from underground aquifers, which often provides natural filtration.
How often is Louisville'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. Louisville'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 Louisville's water compare to other cities in Mississippi?
Louisville's water quality score of 21/100 earns a grade of D, which is considered poor. This is a concerning score that suggests significant water quality issues. Visit our Mississippi state page to see how all cities in the state compare.
What should I do if I'm concerned about Louisville's water quality?
If you have concerns about Louisville'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 (BOND WATER ASSOCIATION #1) 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.