The Power of Information

National Drinking Water Database


California Water Service Co. - Ela Utilities - Los Angeles, CA


Serves 151,042 people

Fenthion

Fenthion is an potent insecticide used on a variety of crops, for control of external parasites on domestic animals and livestock and in mosquito control programs. Fenthion is highly toxic to birds; uses are restricted by the FDA and EPA.
 
This Drinking Water System
Test Days Exceeding Health GuidelinesDefinition of what this is
0 days
Test Days Exceeding Legal LimitsNumber of days in which the samples taken in that day exceed the Maximum Contaminant Level (Depending on the contaminant and its MCL, that may or may not trigger an MCL violation. Some MCLs are based on averages spanning several months to a year)
0 days
Test DaysNumber of days in which this chemical has reported results in the data we received from the State
1 days
Tests ConductedNumber of individual tests done for this contaminant
2 tests

Testing Summary

ContaminantAverage/
Maximum
Result
Health Limit
Exceeded
Legal Limit
Exceeded

Testing History

-Tested      -Detected      -Over Health Guidelines      -Over Legal Limit*
FenthionFenthion is an potent insecticide used on a variety of crops, for control of external parasites on domestic animals and livestock and in mosquito control programs. Fenthion is highly toxic to birds; uses are restricted by the FDA and EPA.0 ppb
0 ppb
No
0.5 ppb
Legal at any levelThis is the Federal Limit. State Limits may be lower.
NOTE: Each dot in the above graph represents one month.
* Water utilities are noted as exceeding the legal limit if any test is above the maximum contaminant level (MCL). Most MCLs are based on annual averages so exceeding the MCL for one test does not necessarily indicate that the system is out of compliance.

Health Based and Legal Limits for Fenthion

Health Based Limits for Fenthion

StandardDescriptionLevel
Health-Based Screening LevelA benchmark concentration of contaminants in water that may be of potential concern for human health, if exceeded. For noncarcinogens, the HBSL represents the contaminant concentration in drinking water that is not expected to cause any adverse effects over a lifetime of exposure. For carcinogens, the HBSL range represents the contaminant concentration in drinking water that corresponds to an excess estimated lifetime cancer risk of 1 chance in 1 million to 1 chance in 10 thousand. Source: U.S. Geological Survey.0.5 ppb

Testing Results

Testing DateAverage
Result
Samples taken that dayNumber of Non-DetectsRange of Results
2004-12-140 ppb220 ppb