Water Quality in West Covina, CA
West Covina's water has 1 contaminant above health guidelines. Consider using a certified water filter for additional protection.
Utility
SAN GABRIEL VALLEY
People Served
254,300
MCL Violations
0
Last Updated
Jul 1, 2025
Quick Summary
Contaminants Detected
⚠️ Contaminants Above Health Guidelines (1)
Total THMs
What is Total THMs?
Group of contaminants that form in drinking water systems when a disinfectant, typically chlorine, reacts with organic matter
Health Effects
Drinking water standards for total THMs are based on evidence of carcinogenicity in human and animal studies, as well as liver and kidney toxicity observed in animal studies. Individual THMs have been further associated with developmental, immune, spleen, and genotoxicity.
Affected Organs
Common Sources
Understanding the Data
This data comes from your local water utility testing. The bar charts compare detected levels against health guidelines (HGL). Contaminants above the health guideline are shown by default and may require filtration. All other tested contaminants are within safe levels and can be viewed by expanding the section above.
Recommended Water Filters for West Covina
Based on West Covina's water quality data, these NSF-certified filters are recommended to remove contaminants above health guidelines.
GHP Group Inc.
VRO-3Q VRO-3Q
NSF Certified:
Daily Production
20.3 gpd
Removes 15 contaminants:
Arsenic, Barium, Cadmium, Chromium (Total), Chromium (VI) +10 more
GHP Group Inc.
PUN3RO PUN3RO
NSF Certified:
Daily Production
23.3 gpd
Removes 15 contaminants:
Arsenic, Barium, Cadmium, Chromium (Total), Chromium (VI) +10 more
![CB-AS[2] CB-AS[2]](/_next/image?url=https%3A%2F%2Fm.media-amazon.com%2Fimages%2FI%2F61gNx3gE9pL._SX425_.jpg&w=3840&q=75)
Carbon Block Technology
CB-AS[2] CB-AS[2]
NSF Certified:
Capacity
600 gal
Filter Life
2 mo
Flow Rate
1 gpm
Removes 10 contaminants:
Arsenic, Asbestos, Cryptosporidium, Lead, Mercury +5 more
![CMTRO-75[G] CMTRO-75[G]](/_next/image?url=https%3A%2F%2Fm.media-amazon.com%2Fimages%2FI%2F61r8aJRwE8L._AC_SX522_.jpg&w=3840&q=75)
Solventum Purification Inc.
CMTRO-75[G] CMTRO-75[G]
NSF Certified:
Daily Production
23.59 gpd
Removes 15 contaminants:
Arsenic, Barium, Cadmium, Chromium (Total), Chromium (VI) +10 more
Frequently Asked Questions
West Covina's water has 1 contaminant above health guidelines. While the water meets federal legal limits, we recommend using a certified water filter for additional protection, especially for vulnerable populations like children, pregnant women, and those with compromised immune systems.