The Power of Information

National Drinking Water Database


City of Newport Utilities - Newport, RI


Serves 43,809 people

Dibenz[a,h]anthracene

Dibenz[a,h]anthracene a polycyclic aromatic hydrocarbon (PAH) released from the incomplete combustion of fossil fuels.
 
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
23 days
Tests ConductedNumber of individual tests done for this contaminant
77 tests

Testing Summary

ContaminantAverage/
Maximum
Result
Health Limit
Exceeded
Legal Limit
Exceeded

Testing History

-Tested      -Detected      -Over Health Guidelines      -Over Legal Limit*
Dibenz[a,h]anthraceneDibenz[a,h]anthracene a polycyclic aromatic hydrocarbon (PAH) released from the incomplete combustion of fossil fuels.0 ppb
0 ppb
No
<0.01 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 Dibenz[a,h]anthracene

Health Based Limits for Dibenz[a,h]anthracene

StandardDescriptionLevel
EPA Human Health Water Quality CriteriaWater quality criteria set by the US EPA provide guidance for states and tribes authorized to establish water quality standards under the Clean Water Act (CWA) to protect human health. These are non-enforceable standards based upon exposure by both drinking water and the contribution of water contamination to other consumed foods. Source: U.S. Environmental Protection Agency.<0.01 ppb

Testing Results

Testing DateAverage
Result
Samples taken that dayNumber of Non-DetectsRange of Results
2009-01-120 ppb330 ppb
2008-10-060 ppb550 ppb
2008-07-140 ppb550 ppb
2008-05-060 ppb660 ppb
2008-01-070 ppb550 ppb
2007-11-130 ppb220 ppb
2007-08-300 ppb110 ppb
2007-08-210 ppb220 ppb
2007-05-140 ppb330 ppb
2007-01-080 ppb220 ppb
2006-10-020 ppb110 ppb
2006-07-310 ppb330 ppb
2006-05-080 ppb330 ppb
2006-02-140 ppb220 ppb
2005-10-170 ppb330 ppb
2005-07-110 ppb550 ppb
2005-05-090 ppb440 ppb
2005-01-100 ppb550 ppb
2004-10-180 ppb220 ppb
2004-07-120 ppb440 ppb
2004-06-240 ppb220 ppb
2004-04-190 ppb660 ppb
2004-01-210 ppb330 ppb