A96/100
La Puente Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 14,401 residents · California
What's In La Puente's Tap Water?
32
Contaminants Tested
1
Exceed EPA Limits
0
Above EPA Goals
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 5.60 mg/L | 1.30 mg/L | Over Limit |
EPA Violation History
No violations in the past 5 years
This system has a clean compliance history.
Understanding violation severity
Tier 1Urgent health risk. Utility must notify all customers within 24 hours.Tier 2Important health or treatment issue. Customers notified within 30 days.Tier 3Administrative or monitoring issue. Reported in the annual water quality report.
Source: EPA Safe Drinking Water Information System (SDWIS) · Updated quarterly
Water Utility Details
CITY OF INDUSTRY WATERWORKS SYSTEMS
Population Served
6,158
Water Source
Groundwater
System ID
CA1910029
LA PUENTE VALLEY CWD
Population Served
8,243
Water Source
Groundwater
System ID
CA1910060
Frequently Asked Questions About La Puente Water
Is La Puente tap water safe to drink?
La Puente, California tap water receives a grade of A (96/100), which is considered excellent. Out of 32 contaminants tested, 1 exceed EPA maximum contaminant levels (MCLs) and 1 exceed health guidelines (MCLGs). While the water meets federal standards, some residents may still choose to use a filter for additional peace of mind.
What contaminants are in La Puente's water?
Of the 32 contaminants tested in La Puente's water supply, the most notable include Copper (90th percentile). 1 contaminant(s) exceed EPA legal limits (MCLs). 1 contaminant(s) exceed EPA health goals (MCLGs), which are non-enforceable targets set at levels with no known health risk.
Does La Puente have any water quality violations?
Yes, La Puente has 1 EPA violation(s) on record, with the most recent in 1999. Violation types include MCL. 1 of these are health-based violations, which are the most serious category.
Do I need a water filter in La Puente?
Based on EPA data, using a water filter in La Puente is recommended. 1 contaminant(s) exceed legal limits. An NSF-certified filter — such as a reverse osmosis or activated carbon system — can effectively reduce many common contaminants. Choose a filter certified to remove the specific contaminants found in your area.
Where does La Puente's tap water come from?
La Puente's drinking water is sourced from groundwater and supplied by CITY OF INDUSTRY WATERWORKS SYSTEMS and 1 other water system(s). The system serves approximately 14,401 people. Groundwater is pumped from underground aquifers, which often provides natural filtration.
How often is La Puente's water tested?
Under the Safe Drinking Water Act (SDWA), water utilities are required to regularly test for over 90 contaminants. Testing frequency varies by contaminant — some are tested monthly, others quarterly or annually. La Puente's water systems must report results to the EPA and publish an annual Consumer Confidence Report (CCR). The data on this page reflects the latest available EPA testing data.
How does La Puente's water compare to other cities in California?
La Puente's water quality score of 96/100 earns a grade of A, which is considered excellent. This places La Puente among the better-performing water systems in California. Visit our California state page to see how all cities in the state compare.
What should I do if I'm concerned about La Puente's water quality?
If you have concerns about La Puente's tap water, consider these steps: (1) Request your utility's annual Consumer Confidence Report for detailed local data. (2) Get your water independently tested through a state-certified laboratory. (3) Consider an NSF-certified water filter rated for the contaminants found in your area. (4) Contact your water utility (CITY OF INDUSTRY WATERWORKS SYSTEMS) with specific questions. (5) Report water quality issues to your state drinking water program or the EPA Safe Drinking Water Hotline at 800-426-4791.