C48/100
Clewiston Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 14,098 residents · Florida
What's In Clewiston's Tap Water?
66
Contaminants Tested
0
Exceed EPA Limits
2
Above EPA Goals
2 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
chlorate | 353.00 µg/L | — | Above Goal |
Lead (90th percentile) | < 0.001 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
4
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.
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.
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: January 1, 2023 – October 28, 2023Rule: 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: January 1, 2023 – October 28, 2023Rule: 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
CLEWISTON, CITY OF
Population Served
9,600
Water Source
Purchased Surface Water
System ID
FL5260053
SOUTH SHORE WATER ASSN., INC.
Population Served
4,498
Water Source
Purchased Surface Water
System ID
FL5260262
Frequently Asked Questions About Clewiston Water
Is Clewiston tap water safe to drink?
Clewiston, Florida tap water receives a grade of C (48/100), which is considered fair. 0 contaminant(s) exceed EPA maximum contaminant levels and 42 violation(s) are on record. Residents should consider using an NSF-certified water filter to reduce contaminant exposure.
What contaminants are in Clewiston's water?
Of the 66 contaminants tested in Clewiston's water supply, the most notable include Lead (90th percentile), chlorate. No contaminants exceed EPA legal limits. 2 contaminant(s) exceed EPA health goals (MCLGs), which are non-enforceable targets set at levels with no known health risk.
Does Clewiston have any water quality violations?
Yes, Clewiston has 42 EPA violation(s) on record, with the most recent in 2024. Violation types include MR, Other, MCL. 14 of these are health-based violations, which are the most serious category.
Do I need a water filter in Clewiston?
Clewiston 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. 2 contaminant(s) exceed these stricter goals.
Where does Clewiston's tap water come from?
Clewiston's drinking water is sourced from purchased surface water and supplied by CLEWISTON, CITY OF and 1 other water system(s). The system serves approximately 14,098 people. Surface water sources include rivers, lakes, and reservoirs.
How often is Clewiston'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. Clewiston'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 Clewiston's water compare to other cities in Florida?
Clewiston's water quality score of 48/100 earns a grade of C, which is considered fair. This is a below-average score that indicates room for improvement. Visit our Florida state page to see how all cities in the state compare.
What should I do if I'm concerned about Clewiston's water quality?
If you have concerns about Clewiston'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 (CLEWISTON, CITY OF) 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.