F0/100
Cadiz Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 3,353 residents · Ohio
What's In Cadiz's Tap Water?
32
Contaminants Tested
1
Exceed EPA Limits
0
Above EPA Goals
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 50.00 mg/L | 1.30 mg/L | Over Limit |
EPA Violation History
6
Violations (last 5yr)
5
Unresolved
6
Health-Related
TIER 1 — URGENTUnresolved
Violation related to Nitrate
TIER 1 — URGENTUnresolved
Violation related to Nitrate
When: August 1, 2025 – August 31, 2025Rule: Surface Water Treatment RuleEnforcement: Informal — resolved cooperativelyVerify on EPA.gov
TIER 1 — URGENTUnresolved
Violation related to Nitrate
When: July 1, 2025 – July 31, 2025Rule: Surface Water Treatment RuleEnforcement: Informal — resolved cooperativelyVerify on EPA.gov
TIER 1 — URGENTUnresolved
Violation related to Nitrate
When: June 1, 2025 – June 30, 2025Rule: Surface Water Treatment RuleEnforcement: Informal — resolved cooperativelyVerify on EPA.gov
TIER 2Unresolved
Treatment technique violation
When: October 17, 2024Rule: Ground Water RuleEnforcement: Informal — resolved cooperativelyVerify on EPA.gov
TIER 2Resolved
Violation related to Nitrite
When: June 3, 2024 – July 15, 2024Rule: Stage 1 DBPREnforcement: Resolving — corrective action underway
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
CADIZ VILLAGE PWS
Population Served
3,353
Water Source
Surface Water
System ID
OH3400214
Frequently Asked Questions About Cadiz Water
Is Cadiz tap water safe to drink?
Cadiz, Ohio tap water receives a grade of F (0/100), which is considered failing. 1 contaminant(s) exceed EPA maximum contaminant levels and 74 violation(s) are on record. Residents should consider using an NSF-certified water filter to reduce contaminant exposure.
What contaminants are in Cadiz's water?
Of the 32 contaminants tested in Cadiz'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 Cadiz have any water quality violations?
Yes, Cadiz has 74 EPA violation(s) on record, with the most recent in 2025. Violation types include TT, Other, MCL. 49 of these are health-based violations, which are the most serious category.
Do I need a water filter in Cadiz?
Based on EPA data, using a water filter in Cadiz 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 Cadiz's tap water come from?
Cadiz's drinking water is sourced from surface water and supplied by CADIZ VILLAGE PWS. The system serves approximately 3,353 people. Surface water sources include rivers, lakes, and reservoirs.
How often is Cadiz'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. Cadiz'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 Cadiz's water compare to other cities in Ohio?
Cadiz's water quality score of 0/100 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 Cadiz's water quality?
If you have concerns about Cadiz'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 (CADIZ 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.