Johns Island, South Carolina Water Quality Report
Water quality data for 2 water systems serving 28,531 people.
Water Source
Detected Contaminants
| Contaminant | Detected Level | EPA Limit (MCL) | Health Guideline | % of Limit | Status |
|---|---|---|---|---|---|
| PFBS | 0.004 | No federal limit | 2000.0 ug/L(EPA Health Advisory) | 0% | Below guideline |
| PFHxA | 0.005 | No federal limit | 1000.0 ug/L(EWG) | 0% | Below guideline |
| PFOA | 0.005 | 0.004 ug/L | 0.090 ug/L(EWG) | 135% | Above limit |
| PFOS | 0.009 | 0.004 ug/L | 0.300 ug/L(EWG) | 213% | Above limit |
| PFPeA | 0.008 | No federal limit | 1000.0 ug/L(EWG) | 0% | Below guideline |
Recommended Water Filters
Based on the contaminants detected in your water supply, these filtration systems are recommended:
Reverse Osmosis (RO)
Reverse osmosis systems remove up to 99% of PFAS compounds. Recommended for homes with detected PFAS.
Up to 99% PFAS removal
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Connect with a certified water treatment professional in Johns Island, South Carolina.
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Compliance & Violations
Active Violations (4)
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Resolved Violations (34)
3A
Jan 1, 2024 — Jan 31, 2024
3A
Jan 1, 2024 — Jan 31, 2024
3A
Jan 1, 2024 — Jan 31, 2024
36
Jan 1, 2024 — Jan 31, 2024
36
Jan 1, 2024 — Jan 31, 2024
+ 29 more resolved violations
Frequently Asked Questions
Is Johns Island tap water safe to drink?
Johns Island's water has 2 contaminants detected above EPA limits. While the water is treated, residents may want to consider additional filtration.
What contaminants are in Johns Island tap water?
5 contaminants have been detected in Johns Island's water supply across 2 water systems. See the full contaminant table above for details.
How can I improve my water quality in Johns Island?
Install a water filter rated for the specific contaminants found in Johns Island's water. See our filter recommendations above. You can also request your utility's Consumer Confidence Report for the most current test results.
Does Johns Island have any water quality violations?
Yes, Johns Island currently has 4 active violations. See the violations section above for details.