Water Quality in TUCSON, AZ (85716)
EPA violation data for public water systems serving ZIP code 85716.
35
Total Violations
5
Health-Based
30
Monitoring / Reporting
35
Resolved
What does this mean?
35 of 35 violations have been resolved. 5 are health-based violations, meaning contaminant levels exceeded federal safety limits. The remaining 30 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 (35 total)
| Contaminant | Category | MCL Limit | Measured | Date | Status | Health Effects |
|---|---|---|---|---|---|---|
| Revised Total Coliform Rule | Monitoring | N/A | N/A | Jul 31, 2025 | Resolved | N/A |
| Revised Total Coliform Rule | Monitoring | N/A | N/A | Mar 22, 2025 | Resolved | N/A |
| Revised Total Coliform Rule | Monitoring | N/A | N/A | Mar 22, 2025 | Resolved | N/A |
| E. COLI | Monitoring | 0 | N/A | Mar 4, 2025 | Resolved | Severe gastrointestinal illness; may be fatal in vulnerable populations |
| E. COLI | Monitoring | 0 | N/A | Mar 4, 2025 | Resolved | Severe gastrointestinal illness; may be fatal in vulnerable populations |
| E. COLI | Monitoring | 0 | N/A | Mar 4, 2025 | Resolved | Severe gastrointestinal illness; may be fatal in vulnerable populations |
| E. COLI | Monitoring | 0 | N/A | Mar 4, 2025 | Resolved | Severe gastrointestinal illness; may be fatal in vulnerable populations |
| LEAD AND COPPER RULE REVISIONS | Health-Based | N/A | N/A | Oct 16, 2024 | Resolved | N/A |
| LEAD AND COPPER RULE REVISIONS | Health-Based | N/A | N/A | Oct 16, 2024 | Resolved | N/A |
| LEAD AND COPPER RULE REVISIONS | Health-Based | N/A | N/A | Oct 16, 2024 | Resolved | N/A |
Lead & Copper Levels
Violation Timeline
2025(7)
Revised Total Coliform Rule
3A
Revised Total Coliform Rule
4A
Revised Total Coliform Rule
4A
E. COLI
34
E. COLI
34
E. COLI
34
E. COLI
34
2024(9)
LEAD AND COPPER RULE REVISIONS
2E
LEAD AND COPPER RULE REVISIONS
2E
LEAD AND COPPER RULE REVISIONS
2E
LEAD AND COPPER RULE REVISIONS
2E
LEAD AND COPPER RULE REVISIONS
4G
LEAD AND COPPER RULE REVISIONS
4G
LEAD AND COPPER RULE REVISIONS
4G
LEAD AND COPPER RULE REVISIONS
4G
Revised Total Coliform Rule
3A
How Does This Compare?
TUCSON (85716) has 35 recorded violations, including 5 health-based. All violations have been resolved, which is a positive sign for current water quality. 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.