Delaware, Ohio Water Quality Report
Water quality data for 2 water systems serving 193,895 people.
Water Source
Detected Contaminants
| Contaminant | Detected Level | EPA Limit (MCL) | Health Guideline | % of Limit | Status |
|---|---|---|---|---|---|
| lithium | 15.4 | No federal limit | 10.0 ug/L(EPA/USGS HBSL) | 154% | Above guideline |
| PFBA | 0.011 | No federal limit | 1000.0 ug/L(EWG) | 0% | Below guideline |
| PFBS | 0.004 | No federal limit | 2000.0 ug/L(EPA Health Advisory) | 0% | Below guideline |
| PFHxA | 0.009 | No federal limit | 1000.0 ug/L(EWG) | 0% | Below guideline |
| PFOA | 0.004 | 0.004 ug/L | 0.090 ug/L(EWG) | 105% | Above limit |
| PFPeA | 0.006 | 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
Get a Free Water Quality Consultation
Connect with a certified water treatment professional in Delaware, Ohio.
Get Water Quality Alerts
Be the first to know when water quality changes in Delaware.
Compliance & Violations
Active Violations (3)
Violation
Unknown
Violation
Unknown
Violation
Unknown
Resolved Violations (123)
02
Apr 1, 2014 — Jun 30, 2014
02
Apr 1, 2014 — Jun 30, 2014
02
Apr 1, 2014 — Jun 30, 2014
02
Apr 1, 2014 — Jun 30, 2014
53
Jan 1, 2014 — Jun 30, 2014
+ 118 more resolved violations
Frequently Asked Questions
Is Delaware tap water safe to drink?
Delaware'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 Delaware tap water?
6 contaminants have been detected in Delaware's water supply across 2 water systems. See the full contaminant table above for details.
How can I improve my water quality in Delaware?
Install a water filter rated for the specific contaminants found in Delaware's water. See our filter recommendations above. You can also request your utility's Consumer Confidence Report for the most current test results.
Does Delaware have any water quality violations?
Yes, Delaware currently has 3 active violations. See the violations section above for details.