The Power of Information

National Drinking Water Database


Long Beach Water Department Utilities - Los Angeles, CA


Serves 452,905 people

Hydrogen sulfide

Hydrogen sulfide is a constituent of crude petroleum and natural gas; it is also released from decomposing waste in landfills and sewers and from food processing factories, coke ovens, paper mills, tanneries, and petroleum refineries.
 
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
9 days
Tests ConductedNumber of individual tests done for this contaminant
36 tests

Testing Summary

ContaminantAverage/
Maximum
Result
Health Limit
Exceeded
Legal Limit
Exceeded

Testing History

-Tested      -Detected      -Over Health Guidelines      -Over Legal Limit*
Hydrogen sulfideHydrogen sulfide is a constituent of crude petroleum and natural gas; it is also released from decomposing waste in landfills and sewers and from food processing factories, coke ovens, paper mills, tanneries, and petroleum refineries.157.68 ppb
320 ppb
NoLegal 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 Hydrogen sulfide

Health Based Limits for Hydrogen sulfide

There are no health based standards that EWG is using for this chemical

Testing Results

Testing DateAverage
Result
Samples taken that dayNumber of Non-DetectsRange of Results
2006-08-100 ppb220 ppb
2006-07-20245 ppb20110 to 380 ppb
2006-06-29130 ppb2040 to 220 ppb
2006-05-31270 ppb10270 ppb
2006-05-26320 ppb10320 ppb
2004-10-1430 ppb1030 ppb
2004-07-28231.56 ppb9024 to 1000 ppb
2004-07-2150.1 ppb1040 to 260 ppb
2004-07-14142.5 ppb810 to 260 ppb