- EPA's UCMR 5 testing looked for 30 contaminants here and found 2.
- PFBA (a PFAS): found in 2 of 2 samples, average 7.3 ppt, highest 7.4 ppt (EPA UCMR 5 testing, Sep 2024–Mar 2025)
- PFPeA (a PFAS): found in 1 of 2 samples, average 2.5 ppt, highest 5 ppt (EPA UCMR 5 testing, Sep 2024–Mar 2025)
- Lead, 90th percentile: 0 ppb at the latest result in EPA records for a monitoring period that ran on or after July 1, 2021, at or below EPA's 15 ppb action level (EPA SDWIS, monitoring period Jan 1, 2022–Dec 31, 2024). The 90th percentile is a system-wide measure from homes sampled under EPA's lead rule; it isn't a result for your home.
- Health-based violation: Lead and Copper Rule, LEAD AND COPPER RULE REVISIONS, from Oct 2024, with no return-to-compliance action in EPA records (EPA SDWIS)
Public EPA test results
Can you drink Monterey Park tap water? What EPA records show
EPA CA1910092 · serves Monterey Park, CA · about 61,096 people (EPA SDWIS)
This report shows EPA's federal records for this water system: UCMR 5 testing, lead testing and violations. It isn't a test of the water at your tap, and it has no Water Score.
Public EPA test results
Monterey Park-City, Water Dept. (EPA CA1910092)
ScoreYourWater.com gives no verdict on your tap water; it shows what the public records say, as of October 14, 2026. For Monterey Park's main utility, Monterey Park-City, Water Dept.: 1 health-based violation since July 1, 2021 in EPA records (EPA SDWIS). PFOA and PFOS were not detected at or above EPA's reporting level in EPA's UCMR 5 testing.
What EPA records show for Monterey Park-City, Water Dept., as of October 14, 2026
Health-based violation: Lead and Copper Rule, LEAD AND COPPER RULE REVISIONS, from Oct 2024, with no return-to-compliance action in EPA records (EPA SDWIS).
Lead, 90th percentile: 0 ppb at the latest result in EPA records for a monitoring period that ran on or after July 1, 2021, at or below EPA's 15 ppb action level (EPA SDWIS, monitoring period Jan 1, 2022–Dec 31, 2024). The 90th percentile is a system-wide measure from homes sampled under EPA's lead rule; it isn't a result for your home.
EPA's UCMR 5 testing looked for 30 contaminants here and found 2.
PFOA and PFOS were not detected at or above EPA's reporting level in EPA's UCMR 5 testing.
Source: EPA records (SDWIS, UCMR 5). SDWIS: data as of Oct 14, 2026. EPA UCMR 5 data, samples through June 2026.
Your water bill names your utility.
Does Monterey Park-City, Water Dept. use chloramine?
We didn't find chloramine in Monterey Park-City, Water Dept.'s EPA treatment records. That's not a complete list; your utility's annual water quality report says which disinfectant it uses.