Water Quality in NOGALES, AZ (85628)
EPA violation data for public water systems serving ZIP code 85628.
49
Total Violations
7
Health-Based
42
Monitoring / Reporting
41
Resolved
What does this mean?
41 of 49 violations have been resolved. 7 are health-based violations, meaning contaminant levels exceeded federal safety limits. The remaining 42 are monitoring or reporting violations (missed testing deadlines or late paperwork — not necessarily a water quality issue). Not all violations mean your water is unsafe. The EPA requires reporting even for minor administrative issues.
Violations Detail (49 total)
| Contaminant | Category | MCL Limit | Measured | Date | Status | Health Effects |
|---|---|---|---|---|---|---|
| Chlorine | Monitoring | N/A | N/A | Jun 30, 2025 | Resolved | Eye and nose irritation; stomach discomfort |
| Public Notice | Monitoring | N/A | N/A | Jun 26, 2025 | Resolved | N/A |
| Public Notice | Monitoring | N/A | N/A | Jun 26, 2025 | Resolved | N/A |
| Groundwater Rule | Health-Based | N/A | N/A | Apr 13, 2025 | Resolved | N/A |
| Groundwater Rule | Health-Based | N/A | N/A | Apr 13, 2025 | Resolved | N/A |
| Groundwater Rule | Health-Based | N/A | N/A | Apr 13, 2025 | Resolved | N/A |
| Lead and Copper Rule | Monitoring | N/A | N/A | Dec 31, 2024 | Resolved | N/A |
| Lead and Copper Rule | Monitoring | N/A | N/A | Dec 31, 2024 | Resolved | N/A |
| Public Notice | Monitoring | N/A | N/A | Dec 19, 2024 | Active | N/A |
| Revised Total Coliform Rule | Health-Based | N/A | N/A | Oct 31, 2024 | Resolved | N/A |
Lead & Copper Levels
Violation Timeline
2025(6)
Chlorine
27
Public Notice
75
Public Notice
75
Groundwater Rule
45
Groundwater Rule
45
Groundwater Rule
45
2024(14)
Lead and Copper Rule
66
Lead and Copper Rule
66
Public Notice
75
Revised Total Coliform Rule
2D
Revised Total Coliform Rule
2D
Revised Total Coliform Rule
4C
Revised Total Coliform Rule
4C
LEAD AND COPPER RULE REVISIONS
4G
LEAD AND COPPER RULE REVISIONS
4G
LEAD AND COPPER RULE REVISIONS
2E
LEAD AND COPPER RULE REVISIONS
2E
Public Notice
75
Public Notice
75
Public Notice
75
How Does This Compare?
NOGALES (85628) has 49 recorded violations, including 7 health-based. 8 remain unresolved. Consider testing your tap water independently for added peace of mind.
Recommended Water Filters
Based on the contaminants detected in your area, these filter types may help improve your water quality.
Reverse Osmosis System
Highly effective at removing heavy metals, dissolved solids, and a wide range of contaminants. Recommended for homes with lead or arsenic concerns.
Targets:Lead, Copper, Arsenic, Mercury, Cadmium
Look for:NSF/ANSI 58 certified
UV Water Purifier
Uses ultraviolet light to neutralize bacteria, viruses, and parasites without chemicals. Ideal for homes with microbial contamination concerns.
Targets:E. coli, Coliform, Giardia, Cryptosporidium
Look for:NSF/ANSI 55 (Class A) certified
Always look for filters certified by NSF International for the specific contaminants you want to remove.