Tap Water Quality in Cincinnati, Ohio (ZIP 45240)
Serving Cincinnati, Ohio
Is the Tap Water Safe in Cincinnati, Ohio?
Tap water in Cincinnati, Ohio (ZIP 45240) has 5 contaminants above EPA health-based guidelines (MCLGs) in at least one of the 1 city served. We recommend reviewing detailed city reports below and considering a certified water filter for additional protection.
ZIP 45240 is served by 1 water utility providing water to Cincinnati. Water quality varies by utility and city. Click on the cities below to see detailed reports for your specific area.
How does Ohio water quality rank nationally? →Get your water tested in Ohio →
Water Quality Report for ZIP 45240
5 contaminants above EPA health guidelines
These levels represent the worst case across all cities in this ZIP code. Check individual city reports for specific details.
Found in Cincinnati
Found in Cincinnati
Found in Cincinnati
Found in Cincinnati
Found in Cincinnati
Water Utilities Serving ZIP 45240
Your Water Quality Can Change
New EPA violations, contaminant spikes, and filter recommendations for your area — we'll email you when it matters.
Free forever. Unsubscribe anytime. We never share your email.
Best Water Filters for Cincinnati (ZIP 45240)
Based on the contaminants found in your area, we recommend NSF-certified water filters that can remove the specific contaminants above health guidelines.
Frequently Asked Questions about Cincinnati Tap Water
Is the tap water safe in Cincinnati, Ohio (ZIP 45240)?
Which water utilities serve ZIP code 45240?
How do I pay my water bill in Cincinnati (ZIP 45240)?
What contaminants are in Cincinnati water (ZIP 45240)?
Should I use a water filter in Cincinnati (ZIP 45240)?
What cities are in ZIP code 45240?
How we built this page
Water-quality data on this page comes from public federal and state records for the 1 utility serving ZIP 45240. We refresh each utility's record whenever its underlying source publishes new data.
- Contaminants & violations: EPA Safe Drinking Water Information System (SDWIS) plus the Unregulated Contaminant Monitoring Rule (UCMR-5) for PFAS and emerging contaminants.
- Annual reports: the most recent published Consumer Confidence Report (CCR) from each utility serving this ZIP, where available.
- Service area & contact: EPA SDWIS plus the Ohio Department of Environmental Protection / Drinking Water program.
Spotted a data issue? Use the Spotted something off? link at the bottom of the page — corrections feed back into the next data refresh. Learn more about TapWaterData.
Spotted something off on this page?
Residents keep our data honest.
Stay Informed About Your Water Quality
Get EPA reports, filter recommendations, and safety alerts for your area.
Join 10,000+ people protecting their families. Unsubscribe anytime.