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EWG's Tap Water Database — 2021 UPDATE

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Perfluorooctane sulfonate (PFOS)

Camp Pendleton (South)

Perfluorooctane sulfonate (PFOS) is a member of a group of perfluorinated chemicals used in many consumer products. PFOS and other perfluorinated chemicals can cause serious health effects, including cancer, endocrine disruption, accelerated puberty, liver and immune system damage, and thyroid changes. These chemicals are persistent in the environment and they accumulate in people. Click here to read more about perfluorinated chemicals.

MORE ABOUT THIS CONTAMINANT

 

274

Samples

0

Samples exceeding legal limit (MCL)

93

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013ND30ND
2014ND30ND
2015N/A00N/A
20169.83 ppt61ND - 59.0 ppt
201746.9 ppt8514ND - 650.0 ppt
201834.6 ppt10116ND - 470.0 ppt
201921.2 ppt7662ND - 350.0 ppt

ppt = parts per trillion

State and national drinking water standards and health guidelines

EWG Health Guideline 1 ppt

The EWG Health Guideline of 1 ppt for PFOS was defined by EWG based on studies by Phillipe Grandjean of Harvard University and many other independent researchers who found reduced effectiveness of vaccines and adverse impacts on mammary gland development from exposure to PFOA and PFOS, the two PFAS most widely detected in drinking water. This health guideline applies to the entire class of PFAS detected in water.

EPA Maximum Contaminant
Level (MCL) 4 ppt

ppt = parts per trillion

All test results

Date Lab ID Result
2013-11-13201311140275AMND
2013-11-22201311230024AMND
2013-11-26201311260884AMND
2014-05-199590-030-1205ND
2014-05-219590-039-1050ND
2014-05-239590-049-1030ND
2016-04-019590-014-1123ND
2016-04-019590-031-1150ND
2016-04-019590-036-1058ND
2016-04-219590-039-1130ND
2016-04-219590-043-140059.0 ppt
2016-04-279590-019-1245ND
2017-05-045810-039-0915ND
2017-05-105810-039-1200ND
2017-05-155810-014-1202ND
2017-05-155810-031-1138ND
2017-05-155810-036-1125ND
2017-05-155810-039-1125ND
2017-05-225810-039-1125ND
2017-05-305810-039-1125ND
2017-06-065810-031-1113ND
2017-06-065810-036-1046ND
2017-06-065810-039-1105ND
2017-06-135810-014-1336ND
2017-06-135810-039-1010ND
2017-06-205810-039-1112ND
2017-06-265810-039-1040ND
2017-07-035810-039-1155ND
2017-07-105810-014-1120ND
2017-07-105810-031-1134ND
2017-07-105810-036-1102ND
2017-07-105810-039-1038ND
2017-07-175810-039-1206ND
2017-07-245810-039-1025ND
2017-08-035810-014-1158ND
2017-08-035810-031-1212ND
2017-08-035810-036-1138ND
2017-08-035810-039-1105ND
2017-08-095810-039-1255ND
2017-08-145810-032-1300ND
2017-08-145810-049-1247ND
2017-08-165810-039-1145ND
2017-08-215810-039-1235ND
2017-08-235810-021-0845370.0 ppt
2017-08-235810-043-073076.0 ppt
2017-08-285810-030-105274.0 ppt
2017-08-285810-039-1000ND
2017-09-055810-032-1105ND
2017-09-055810-049-1130ND
2017-09-135810-014-1334ND
2017-09-135810-030-1105ND
2017-09-135810-031-1346ND
2017-09-135810-036-1320ND
2017-09-145810-020-1134ND
2017-09-145810-051-1116ND
2017-09-155810-035-1209ND
2017-09-185810-039-1055ND
2017-09-255810-021-1232420.0 ppt
2017-09-255810-022-1215600.0 ppt
2017-09-265810-039-1220ND
2017-09-275810-019-1135ND
2017-09-275810-037-1115ND
2017-09-285810-033-125845.0 ppt
2017-09-285810-034-1230ND
2017-09-285810-043-113565.0 ppt
2017-09-285810-044-1158ND
2017-10-045810-014-1113ND
2017-10-045810-036-1041ND
2017-10-045810-039-1056ND
2017-10-055810-032-1500ND
2017-10-055810-049-1447ND
2017-10-125810-039-1151ND
2017-10-135810-020-1043ND
2017-10-135810-035-1055ND
2017-10-135810-051-1027ND
2017-10-185810-019-1255ND
2017-10-185810-034-1100ND
2017-10-185810-037-1238ND
2017-10-185810-039-1020ND
2017-10-195810-021-1049460.0 ppt
2017-10-195810-022-1026650.0 ppt
2017-10-205810-043-113555.0 ppt
2017-10-205810-044-1116ND
2017-10-255810-033-114248.0 ppt
2017-10-265810-020-1212ND
2017-10-265810-035-1256ND
2017-10-265810-039-1140ND
2017-10-265810-051-1150ND
2017-10-275810-021-1029460.0 ppt
2017-10-275810-022-1008620.0 ppt
2017-10-315810-039-1108ND
2017-11-085810-032-1235ND
2017-11-085810-039-1135ND
2017-12-045810-030-124543.0 ppt
2017-12-045810-032-1000ND
2017-12-075810-039-1210ND
2017-12-135810-018-0740ND
2018-01-045810-032-1120ND
2018-01-045810-049-1150ND
2018-01-105810-039-1325ND
2018-02-055810-030-1315ND
2018-02-075810-032-1310ND
2018-02-075810-049-1325ND
2018-02-145810-039-1210ND
2018-03-055810-032-1120ND
2018-03-055810-049-1130ND
2018-03-205810-039-1340ND
2018-04-025810-032-1112ND
2018-04-025810-049-1124ND
2018-04-095810-039-1310ND
2018-04-255810-030-1300ND
2018-05-015810-032-1252ND
2018-05-015810-049-1245ND
2018-05-245810-039-1215ND
2018-06-145810-039-1130ND
2018-06-185810-049-1036ND
2018-06-215810-030-100349.0 ppt
2018-06-265810-032-0933ND
2018-07-235810-039-1115ND
2018-07-255810-030-1243ND
2018-08-065810-032-1052ND
2018-08-065810-049-1017ND
2018-08-105810-031-1330ND
2018-08-165810-014-1032ND
2018-08-175810-020-1058ND
2018-08-175810-035-1115ND
2018-08-175810-051-1043ND
2018-08-205810-036-1202ND
2018-08-235810-021-1143420.0 ppt
2018-08-235810-022-1133420.0 ppt
2018-08-235810-033-122048.0 ppt
2018-08-235810-034-1220ND
2018-08-235810-043-111047.0 ppt
2018-08-235810-044-1052ND
2018-08-245810-018-0720ND
2018-08-245810-037-0800ND
2018-08-285810-019-0740ND
2018-08-285810-039-1125ND
2018-08-305810-014-1322ND
2018-08-305810-020-1045ND
2018-08-305810-031-1334ND
2018-08-305810-035-1026ND
2018-08-305810-036-1313ND
2018-08-305810-051-1036ND
2018-09-045810-032-1030ND
2018-09-045810-049-1010ND
2018-09-125810-014-1110ND
2018-09-125810-031-1132ND
2018-09-125810-036-1055ND
2018-09-135810-020-1123ND
2018-09-135810-030-1026ND
2018-09-135810-033-121745.0 ppt
2018-09-135810-034-1158ND
2018-09-135810-035-1136ND
2018-09-135810-051-1105ND
2018-09-145810-021-1157420.0 ppt
2018-09-145810-022-1140450.0 ppt
2018-09-195810-043-120066.0 ppt
2018-09-195810-044-1150ND
2018-09-245810-019-1205ND
2018-09-245810-037-1140ND
2018-09-245810-039-1300ND
2018-09-275810-018-1000ND
2018-10-015810-032-1023ND
2018-10-015810-049-1000ND
2018-10-095810-014-1132ND
2018-10-095810-031-1155ND
2018-10-095810-036-1217ND
2018-10-115810-020-1127ND
2018-10-115810-034-1152ND
2018-10-115810-035-1115ND
2018-10-115810-051-1135ND
2018-10-125810-043-102554.0 ppt
2018-10-125810-044-1046ND
2018-10-175810-019-1156ND
2018-10-175810-037-1135ND
2018-10-185810-018-1142ND
2018-10-185810-022-1007440.0 ppt
2018-10-185810-033-103246.0 ppt
2018-10-225810-039-1300ND
2018-10-245810-033-095544.0 ppt
2018-10-245810-034-1005ND
2018-10-245810-043-102751.0 ppt
2018-10-245810-044-1020ND
2018-10-255810-019-1205ND
2018-10-255810-021-1117470.0 ppt
2018-10-255810-022-1107420.0 ppt
2018-10-255810-037-1215ND
2018-10-295810-036-1142ND
2018-10-305810-018-0720ND
2018-11-065810-030-1245ND
2018-11-135810-032-1255ND
2018-11-135810-049-1240ND
2018-11-195810-039-1100ND
2018-12-045810-030-0956ND
2018-12-075810-032-1230ND
2018-12-075810-049-1210ND
2018-12-125810-039-1215ND
2019-01-025810-032-0845ND
2019-01-025810-049-0823ND
2019-01-045810-030-124052.0 ppt
2019-01-235810-039-1200ND
2019-02-045810-032-1025ND
2019-02-045810-049-1005ND
2019-02-115810-039-1245ND
2019-03-045810-030-094617.0 ppt
2019-03-205810-032-090515.0 ppt
2019-03-205810-049-08453.70 ppt
2019-03-255810-039-121711.0 ppt
2019-04-025810-032-111011.0 ppt
2019-04-025810-049-11302.70 ppt
2019-04-225810-039-130018.0 ppt
2019-05-075810-032-082528.0 ppt
2019-05-075810-049-10106.60 ppt
2019-05-095810-030-080613.0 ppt
2019-05-145810-039-115511.0 ppt
2019-06-035810-032-102015.0 ppt
2019-06-035810-049-09503.80 ppt
2019-06-175810-039-115515.0 ppt
2019-06-195810-034-111015.0 ppt
2019-06-195810-035-103524.0 ppt
2019-06-205810-019-104817.0 ppt
2019-06-205810-037-11207.80 ppt
2019-06-265810-014-112719.0 ppt
2019-06-265810-031-1110ND
2019-06-275810-020-100619.0 ppt
2019-06-275810-043-103352.0 ppt
2019-06-275810-044-103517.0 ppt
2019-06-275810-051-10003.40 ppt
2019-07-025810-032-10502.30 ppt
2019-07-025810-049-10408.20 ppt
2019-07-035810-030-110519.0 ppt
2019-07-235810-039-1250ND
2019-08-085810-014-104223.0 ppt
2019-08-085810-031-1106ND
2019-08-155810-035-114314.0 ppt
2019-08-155810-051-12023.60 ppt
2019-08-205810-032-083517.0 ppt
2019-08-205810-034-102012.0 ppt
2019-08-205810-049-08154.00 ppt
2019-08-265810-020-09157.90 ppt
2019-08-265810-039-1250ND
2019-08-265810-043-111546.0 ppt
2019-08-265810-044-102130.0 ppt
2019-08-275810-019-094817.0 ppt
2019-08-275810-037-093213.0 ppt
2019-09-095810-032-102522.0 ppt
2019-09-095810-049-09505.60 ppt
2019-09-195810-030-063016.0 ppt
2019-09-245810-039-121020.0 ppt
2019-10-085810-032-090010.00 ppt
2019-10-085810-049-0835ND
2019-10-115810-014-130519.0 ppt
2019-10-115810-031-1042ND
2019-10-115810-036-111228.0 ppt
2019-10-145810-039-115017.0 ppt
2019-10-175810-019-110816.0 ppt
2019-10-175810-037-105011.0 ppt
2019-10-175810-051-11354.00 ppt
2019-10-235810-043-111654.0 ppt
2019-10-235810-044-113210.00 ppt
2019-10-255810-020-102816.0 ppt
2019-10-255810-021-1202350.0 ppt
2019-10-255810-022-1144310.0 ppt
2019-10-255810-034-11208.70 ppt
2019-10-255810-035-104416.0 ppt
2019-10-305810-030-113011.0 ppt
2019-11-115810-032-073010.00 ppt
2019-11-115810-049-0745ND
2019-11-125810-039-1155ND
2019-12-025810-032-075915.0 ppt
2019-12-025810-049-08094.00 ppt
2019-12-035810-030-111014.0 ppt
2019-12-115810-039-114513.0 ppt