Dubuque, Iowa Water Quality Report
Water quality data for 13 water systems serving 60,533 people.
Water Source
Detected Contaminants
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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Compliance & Violations
Active Violations (13)
66
Dec 1, 2024
66
Dec 1, 2024
75
Nov 20, 2023
75
Nov 20, 2023
75
Nov 20, 2023
75
Aug 21, 2023
75
Aug 21, 2023
75
Aug 21, 2023
75
Oct 26, 2022
75
Oct 26, 2022
75
Oct 26, 2022
66
Dec 1, 2021
66
Dec 1, 2021
Resolved Violations (487)
27
Aug 1, 2025 — Aug 31, 2025
27
Aug 1, 2025 — Aug 31, 2025
3A
May 1, 2025 — May 31, 2025
3A
May 1, 2025 — May 31, 2025
3A
May 1, 2025 — May 31, 2025
+ 482 more resolved violations
Frequently Asked Questions
Is Dubuque tap water safe to drink?
Dubuque's water has 1 contaminant detected above EPA limits. While the water is treated, residents may want to consider additional filtration.
What contaminants are in Dubuque tap water?
2 contaminants have been detected in Dubuque's water supply across 13 water systems. See the full contaminant table above for details.
How can I improve my water quality in Dubuque?
Install a water filter rated for the specific contaminants found in Dubuque's water. See our filter recommendations above. You can also request your utility's Consumer Confidence Report for the most current test results.
Does Dubuque have any water quality violations?
Yes, Dubuque currently has 246 active violations. See the violations section above for details.