F13/100
Caldwell Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 5,289 residents · Ohio
What's In Caldwell's Tap Water?
35
Contaminants Tested
1
Exceed EPA Limits
0
Above EPA Goals
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 40.00 mg/L | 1.30 mg/L | Over Limit |
EPA Violation History
2
Violations (last 5yr)
1
Unresolved
0
Health-Related
TIER 3Resolved
Surface water treatment technique failure
When: July 1, 2025 – August 20, 2025Enforcement: Resolving — corrective action underway
TIER 3Unresolved
Surface water treatment technique failure
Understanding violation severity
Tier 1Urgent health risk. Utility must notify all customers within 24 hours.Tier 2Important health or treatment issue. Customers notified within 30 days.Tier 3Administrative or monitoring issue. Reported in the annual water quality report.
Source: EPA Safe Drinking Water Information System (SDWIS) · Updated quarterly
Water Utility Details
CALDWELL VILLAGE PWS
Population Served
3,300
Water Source
Surface Water
System ID
OH6100011
PURE WATER CORPORATION
Population Served
1,989
Water Source
Purchased Surface Water
System ID
OH6100303
Frequently Asked Questions About Caldwell Water
Is Caldwell tap water safe to drink?
Caldwell, Ohio tap water receives a grade of F (13/100), which is considered failing. 1 contaminant(s) exceed EPA maximum contaminant levels and 65 violation(s) are on record. Residents should consider using an NSF-certified water filter to reduce contaminant exposure.
What contaminants are in Caldwell's water?
Of the 35 contaminants tested in Caldwell's water supply, the most notable include Copper (90th percentile). 1 contaminant(s) exceed EPA legal limits (MCLs). 1 contaminant(s) exceed EPA health goals (MCLGs), which are non-enforceable targets set at levels with no known health risk.
Does Caldwell have any water quality violations?
Yes, Caldwell has 65 EPA violation(s) on record, with the most recent in 2025. Violation types include Other, MR, RPT. 30 of these are health-based violations, which are the most serious category.
Do I need a water filter in Caldwell?
Based on EPA data, using a water filter in Caldwell is recommended. 1 contaminant(s) exceed legal limits. An NSF-certified filter — such as a reverse osmosis or activated carbon system — can effectively reduce many common contaminants. Choose a filter certified to remove the specific contaminants found in your area.
Where does Caldwell's tap water come from?
Caldwell's drinking water is sourced from surface water and supplied by CALDWELL VILLAGE PWS and 1 other water system(s). The system serves approximately 5,289 people. Surface water sources include rivers, lakes, and reservoirs.
How often is Caldwell's water tested?
Under the Safe Drinking Water Act (SDWA), water utilities are required to regularly test for over 90 contaminants. Testing frequency varies by contaminant — some are tested monthly, others quarterly or annually. Caldwell's water systems must report results to the EPA and publish an annual Consumer Confidence Report (CCR). The data on this page reflects the latest available EPA testing data.
How does Caldwell's water compare to other cities in Ohio?
Caldwell's water quality score of 13/100 earns a grade of F, which is considered failing. This is a concerning score that suggests significant water quality issues. Visit our Ohio state page to see how all cities in the state compare.
What should I do if I'm concerned about Caldwell's water quality?
If you have concerns about Caldwell's tap water, consider these steps: (1) Request your utility's annual Consumer Confidence Report for detailed local data. (2) Get your water independently tested through a state-certified laboratory. (3) Consider an NSF-certified water filter rated for the contaminants found in your area. (4) Contact your water utility (CALDWELL VILLAGE PWS) with specific questions. (5) Report water quality issues to your state drinking water program or the EPA Safe Drinking Water Hotline at 800-426-4791.