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EWG's Tap Water Database — 2019 UPDATE

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Octadecanoic acid

Status: No national drinking water standard exists

 

Octadecanoic acid, also called stearic acid, is a naturally occurring fatty acid found in animal and plant lipids.

2015-2017:

FOUND

1

states detected

135

utilities detected

4.0 million

people served

States reporting octadecanoic acid in drinking water

UTILITIES WITH CONTAMINATION
State UtilitiesPeople Served
Texas1354,043,358
MORE
LESS

Filtering technologies that reduce octadecanoic acid

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Activated Carbon

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Reverse Osmosis

Utilities with the highest amounts of octadecanoic acid, 2015-2017

ALL UTILITIES
LARGE UTILITIES
UtilityLocationTestsAverage levelPeople served
Central Harris County Regional Water Aut*Houston, TX1 of 113.0 ppb0
Harris County Municipal Utility District 421*Houston, TX1 of 113.0 ppb177
Harris County MUD 422Houston, TX1 of 113.0 ppb25
City of Houston*Houston, TX1 of 113.0 ppb2,319,603
North Harris County Regional Water Authority*Houston, TX1 of 113.0 ppb0
Harris County Municipal Utility District 537Houston, TX1 of 113.0 ppb96
City of WebsterWebster, TX1 of 113.0 ppb13,710
Harris County Municipal Utility District 158Houston, TX1 of 113.0 ppb6,639
Harris County Municipal Utility District 8Houston, TX1 of 113.0 ppb6,066
TasfieldAustin, TX1 of 113.0 ppb219
North Fort Bend Water Authority*Houston, TX1 of 113.0 ppb0
North Channel Water Authority*Houston, TX1 of 113.0 ppb0
City of Hilshire VillageHouston, TX1 of 113.0 ppb746
Acorn Village Mobile Home ParkSpring, TX1 of 113.0 ppb192
Harris County Municipal Utility District 321Houston, TX1 of 113.0 ppb867
Harris County Municipal Utility District 372Houston, TX1 of 113.0 ppb2,427
Baybrook Municipal Utility District 1Houston, TX1 of 113.0 ppb1,065
Harris County Water Control and Improvement District 96Houston, TX1 of 113.0 ppb8,430
Harris County Municipal Utility District 96Houston, TX1 of 113.0 ppb5,793
West Harris County Regional Water Authority*Houston, TX1 of 113.0 ppb0
Harris County Water Control and Improvement District 110Houston, TX1 of 19.70 ppb8,439
City of GrovesGroves, TX1 of 16.40 ppb15,967
Gonzales County Water Supply CorporationGonzales, TX1 of 15.90 ppb7,782
Sebastian Municipal Utility DistrictSebastian, TX1 of 15.80 ppb2,500
City of RichwoodRichwood, TX1 of 15.10 ppb5,232
City of Southside PlaceHouston, TX1 of 14.30 ppb1,700
City of Port ArthurPort Arthur, TX2 of 24.05 ppb54,548
Sienna Plantation Municipal Utility District 2Houston, TX1 of 14.00 ppb4,785
Sienna Plantation Municipal Utility District 4Houston, TX1 of 14.00 ppb474
Sienna Plantation Municipal Utility District 10Houston, TX1 of 14.00 ppb4,992
Harris County MUD 53Houston, TX2 of 24.00 ppb16,164
Sienna Plantation Municipal Utility District 1*Sugar Land, TX1 of 14.00 ppb24
Sienna Plantation Municipal Utility District 3Houston, TX1 of 14.00 ppb7,029
Lometa Regional Water SystemAustin, TX1 of 13.90 ppb2,832
Jefferson County Water Control and Improvement District 10Nederland, TX1 of 13.80 ppb5,571
Harris County Water Control and Improvement District 50 El LagoEl Lago, TX1 of 13.70 ppb2,774
East Rio Hondo Water Supply Corporation Arroyo CityRio Hondo, TX1 of 13.70 ppb1,824
Military Highway WSC - Del Mar HeightsProgreso, TX1 of 13.70 ppb216
East Rio Hondo WSC*Rio Hondo, TX1 of 13.70 ppb21,726
Fort Bend County Municipal Utility District 50Houston, TX1 of 13.70 ppb4,218
Town of Indian LakeLos Fresnos, TX1 of 13.70 ppb695
Violet Water Supply CorporationRobstown, TX1 of 13.60 ppb2,622
City of Corpus Christi*Corpus Christi, TX1 of 13.60 ppb325,733
Corpus Christi Naval Air StationCorpus Christi, TX1 of 13.60 ppb8,349
South Texas Water Authority*Kingsville, TX1 of 13.60 ppb0
Woodland Acres SubdivisionHighlands, TX1 of 13.60 ppb729
Sunbelt Fresh Water Supply District Woodland Oaks SubdivisionHouston, TX1 of 13.40 ppb4,464
Clear Brook City MUD*Houston, TX1 of 13.40 ppb12,390
City of Three RiversThree Rivers, TX1 of 13.30 ppb4,356
Fort Bend County Municipal Utility District 41Houston, TX1 of 13.30 ppb4,167

* This water utility supplies finished drinking water to at least one other water utility. The purchasing utility is not required to test for or report Octadecanoic acid, but it likely has the contaminant in its water supply.

UtilityLocationTestsAverage levelPeople served
City of Houston*Houston, TX1 of 113.0 ppb2,319,603
City of WebsterWebster, TX1 of 113.0 ppb13,710
City of GrovesGroves, TX1 of 16.40 ppb15,967
City of Port ArthurPort Arthur, TX2 of 24.05 ppb54,548
Harris County MUD 53Houston, TX2 of 24.00 ppb16,164
East Rio Hondo WSC*Rio Hondo, TX1 of 13.70 ppb21,726
City of Corpus Christi*Corpus Christi, TX1 of 13.60 ppb325,733
Clear Brook City MUD*Houston, TX1 of 13.40 ppb12,390
City of Galena ParkGalena Park, TX3 of 33.23 ppb10,089
City of League CityLeague City, TX2 of 23.15 ppb104,857
City of BellaireBellaire, TX1 of 13.00 ppb22,473
Fort Bend County Municipal Utility District 112Sugar Land, TX2 of 22.80 ppb15,966
Nueces County WCID 3*Robstown, TX2 of 22.70 ppb14,607
City of BoerneBoerne, TX1 of 12.60 ppb16,056
City of La PorteLa Porte, TX1 of 12.60 ppb34,733
City of Beeville*Beeville, TX1 of 12.60 ppb15,039
Harlingen Water Works System*Harlingen, TX1 of 12.50 ppb85,900

* This water utility supplies finished drinking water to at least one other water utility. The purchasing utility is not required to test for or report Octadecanoic acid, but it likely has the contaminant in its water supply.