Cornelius, North Carolina Water Quality Report
Water quality data for 6 water systems serving 1,142 people.
Water Source
Detected Contaminants
No contaminant data available for this location.
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Compliance & Violations
Active Violations (66)
71
Jul 1, 2025
2E
Oct 17, 2024
4G
Oct 17, 2024
75
Feb 23, 2024
75
Feb 23, 2024
75
Feb 23, 2024
75
Feb 23, 2024
71
Jul 1, 2023
71
Jul 1, 2023
71
Jul 1, 2023
66
Jan 1, 2023
66
Jan 1, 2023
71
Jul 1, 2022
71
Jul 1, 2022
71
Jul 1, 2022
71
Jul 1, 2021
71
Jul 1, 2021
71
Jul 1, 2021
71
Jul 1, 2021
71
Jul 1, 2021
71
Jul 1, 2020
71
Jul 1, 2020
71
Jul 1, 2020
71
Jul 1, 2020
71
Jul 1, 2020
66
Jan 1, 2020
66
Jan 1, 2020
71
Jul 1, 2019
71
Jul 1, 2019
71
Jul 1, 2019
71
Jul 1, 2019
71
Jul 1, 2019
75
Oct 24, 2018
75
Oct 24, 2018
71
Jul 1, 2018
71
Jul 1, 2018
71
Jul 1, 2018
71
Jul 1, 2018
71
Jul 1, 2018
75
Feb 11, 2018
75
Feb 11, 2018
75
Nov 7, 2014
75
Nov 7, 2014
75
Nov 7, 2014
75
Nov 7, 2014
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Resolved Violations (239)
71
Jul 1, 2025
71
Jul 1, 2024
71
Jul 1, 2024
71
Jul 1, 2024
71
Jul 1, 2023
+ 234 more resolved violations
Frequently Asked Questions
Is Cornelius tap water safe to drink?
Cornelius's water meets all EPA maximum contaminant levels. However, 0 contaminants were detected at various levels. Some residents may prefer additional filtration for peace of mind.
What contaminants are in Cornelius tap water?
0 contaminants have been detected in Cornelius's water supply across 6 water systems. See the full contaminant table above for details.
How can I improve my water quality in Cornelius?
Install a water filter rated for the specific contaminants found in Cornelius's water. See our filter recommendations above. You can also request your utility's Consumer Confidence Report for the most current test results.
Does Cornelius have any water quality violations?
Yes, Cornelius currently has 66 active violations. See the violations section above for details.