Water Quality in TUSTIN, CA (92780)
EPA violation data for public water systems serving ZIP code 92780.
73
Total Violations
3
Health-Based
70
Monitoring / Reporting
60
Resolved
What does this mean?
60 of 73 violations have been resolved. 3 are health-based violations, meaning contaminant levels exceeded federal safety limits. The remaining 70 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 (73 total)
| Contaminant | Category | MCL Limit | Measured | Date | Status | Health Effects |
|---|---|---|---|---|---|---|
| Consumer Confidence Rule | Monitoring | N/A | N/A | Jun 30, 2025 | Resolved | N/A |
| Consumer Confidence Rule | Monitoring | N/A | N/A | Jun 30, 2025 | Resolved | N/A |
| Lead and Copper Rule | Monitoring | N/A | N/A | Jun 30, 2025 | Active | N/A |
| Lead and Copper Rule | Monitoring | N/A | N/A | Jun 30, 2025 | Active | N/A |
| Surface Water Treatment Rule | Monitoring | N/A | N/A | May 31, 2025 | Resolved | N/A |
| Revised Total Coliform Rule | Monitoring | N/A | N/A | May 31, 2025 | Resolved | N/A |
| Revised Total Coliform Rule | Monitoring | N/A | N/A | May 31, 2025 | Resolved | N/A |
| Revised Total Coliform Rule | Monitoring | N/A | N/A | May 31, 2025 | Resolved | N/A |
| Surface Water Treatment Rule | Monitoring | N/A | N/A | May 31, 2025 | Resolved | N/A |
| Surface Water Treatment Rule | Monitoring | N/A | N/A | May 31, 2025 | Resolved | N/A |
Lead & Copper Levels
Violation Timeline
2025(30)
Consumer Confidence Rule
71
Consumer Confidence Rule
71
Lead and Copper Rule
52
Lead and Copper Rule
52
Surface Water Treatment Rule
36
Revised Total Coliform Rule
3A
Revised Total Coliform Rule
3A
Revised Total Coliform Rule
3A
Surface Water Treatment Rule
36
Surface Water Treatment Rule
36
Revised Total Coliform Rule
5A
Revised Total Coliform Rule
5A
Stage 2 Disinfectants and Disinfection Byproducts Rule
35
Stage 2 Disinfectants and Disinfection Byproducts Rule
35
Chlorine
27
Chlorine
27
Chlorine
27
Surface Water Treatment Rule
36
Surface Water Treatment Rule
36
Surface Water Treatment Rule
36
Revised Total Coliform Rule
3A
Revised Total Coliform Rule
3A
Revised Total Coliform Rule
3A
Public Notice
75
Revised Total Coliform Rule
3A
Surface Water Treatment Rule
36
Surface Water Treatment Rule
36
Surface Water Treatment Rule
36
Revised Total Coliform Rule
3A
Revised Total Coliform Rule
3A
2024(31)
Surface Water Treatment Rule
36
TTHM
27
Surface Water Treatment Rule
36
Surface Water Treatment Rule
36
TTHM
27
Total Haloacetic Acids (HAA5)
27
Total Haloacetic Acids (HAA5)
27
Revised Total Coliform Rule
3A
Revised Total Coliform Rule
3A
Revised Total Coliform Rule
3A
Chlorine
27
Chlorine
27
Chlorine
27
Stage 1 Disinfectants and Disinfection Byproducts Rule
12
Stage 1 Disinfectants and Disinfection Byproducts Rule
12
Stage 1 Disinfectants and Disinfection Byproducts Rule
12
Revised Total Coliform Rule
3A
Revised Total Coliform Rule
3A
Revised Total Coliform Rule
3A
Surface Water Treatment Rule
36
Surface Water Treatment Rule
36
Surface Water Treatment Rule
36
Revised Total Coliform Rule
3A
Revised Total Coliform Rule
3A
Revised Total Coliform Rule
3A
Surface Water Treatment Rule
36
Surface Water Treatment Rule
36
Surface Water Treatment Rule
36
Chlorine
27
Chlorine
27
Chlorine
27
How Does This Compare?
TUSTIN (92780) has 73 recorded violations, including 3 health-based. 13 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
Activated Carbon Filter
Excellent for removing chlorine, chloramine, and disinfection byproducts like THMs and HAAs. Available as pitcher filters, countertop, or under-sink units.
Targets:THMs, HAAs, Chlorine, Chloramine, Taste & Odor
Look for:NSF/ANSI 42 & 53 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.