Water Quality in MONROVIA, CA (91016)
EPA violation data for public water systems serving ZIP code 91016.
21
Total Violations
19
Health-Based
2
Monitoring / Reporting
21
Resolved
What does this mean?
21 of 21 violations have been resolved. 19 are health-based violations, meaning contaminant levels exceeded federal safety limits. The remaining 2 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 (21 total)
| Contaminant | Category | MCL Limit | Measured | Date | Status | Health Effects |
|---|---|---|---|---|---|---|
| Nitrate | Monitoring | N/A | N/A | Apr 30, 2023 | Resolved | Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath |
| Nitrate | Monitoring | N/A | N/A | Apr 30, 2023 | Resolved | Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath |
| Surface Water Treatment Rule | Health-Based | N/A | N/A | Nov 30, 2021 | Resolved | N/A |
| Surface Water Treatment Rule | Health-Based | N/A | N/A | Oct 31, 2021 | Resolved | N/A |
| Surface Water Treatment Rule | Health-Based | N/A | N/A | Oct 31, 2021 | Resolved | N/A |
| Surface Water Treatment Rule | Health-Based | N/A | N/A | Sep 30, 2021 | Resolved | N/A |
| Surface Water Treatment Rule | Health-Based | N/A | N/A | Sep 30, 2021 | Resolved | N/A |
| Surface Water Treatment Rule | Health-Based | N/A | N/A | Aug 31, 2021 | Resolved | N/A |
| Surface Water Treatment Rule | Health-Based | N/A | N/A | Aug 31, 2021 | Resolved | N/A |
| Surface Water Treatment Rule | Health-Based | N/A | N/A | Jul 31, 2021 | Resolved | N/A |
Lead & Copper Levels
Violation Timeline
2023(2)
Nitrate
03
Nitrate
03
2021(19)
Surface Water Treatment Rule
41
Surface Water Treatment Rule
41
Surface Water Treatment Rule
41
Surface Water Treatment Rule
41
Surface Water Treatment Rule
41
Surface Water Treatment Rule
41
Surface Water Treatment Rule
41
Surface Water Treatment Rule
41
Surface Water Treatment Rule
41
Surface Water Treatment Rule
41
Surface Water Treatment Rule
41
Surface Water Treatment Rule
41
Surface Water Treatment Rule
41
Surface Water Treatment Rule
41
Surface Water Treatment Rule
41
Surface Water Treatment Rule
41
Surface Water Treatment Rule
41
Surface Water Treatment Rule
41
Surface Water Treatment Rule
41
How Does This Compare?
MONROVIA (91016) has 21 recorded violations, including 19 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
One of the few filtration methods effective at removing nitrates and nitrites. Essential for households with infants.
Targets:Nitrate, Nitrite, Dissolved Solids
Look for:NSF/ANSI 58 certified
Always look for filters certified by NSF International for the specific contaminants you want to remove.