GSWC - ARTESIA

CA Β· PWS ID CA1910004 Β· Community water system

112
contaminants tested
25
detected
50,415
people served
Water source
Ground water
Ownership
Private
Counties served
Los Angeles

PFAS detected

β€œForever chemicals” from UCMR-5 β€” the only fresh nationwide measurements (2023–2025).
ContaminantMaxDetection ratePeriod
PFOS 0.0130 ug/L 4/10 2024
PFHxS 0.0034 ug/L 2/10 2024

Other contaminants detected

ContaminantMaxDetection rateSourcePeriod
Arsenic 41 UG/L 2266/2585 SYR4 2012–2019
TTHM 31 UG/L 102/126 SYR4 2012–2019
Total Haloacetic Acids (HAA5) 27 UG/L 97/124 SYR4 2012–2019
Dibromochloromethane 7.4 UG/L 93/126 SYR4 2012–2019
Dichloroacetic Acid 10 UG/L 93/124 SYR4 2012–2019
Trichloroacetic Acid 6.8 UG/L 91/124 SYR4 2012–2019
Bromodichloromethane 9.2 UG/L 88/126 SYR4 2012–2019
Chloroform 13 UG/L 87/126 SYR4 2012–2019
Dibromoacetic acid 3.1 UG/L 73/124 SYR4 2012–2019
LEAD SUMMARY 0.0060 mg/L 38/38 LCR 2025
Bromoform 2 UG/L 34/126 SYR4 2012–2019
Nitrate 2200 UG/L 32/102 SYR4 2012–2019
Fluoride 550 UG/L 20/20 SYR4 2012–2018
Barium 190 UG/L 15/20 SYR4 2012–2018
Tetrachloroethylene 0.8000 UG/L 15/62 SYR4 2012–2019
1,1-Dichloroethylene 0.8900 UG/L 8/62 SYR4 2012–2019
Monobromoacetic acid 7.2 UG/L 7/124 SYR4 2012–2019
Trichloroethylene 0.6100 UG/L 7/62 SYR4 2012–2019
Monochloroacetic acid 4.2 UG/L 6/124 SYR4 2012–2019
COPPER, FREE 6.4 UG/L 4/20 SYR4 2012–2018
Nitrate-Nitrite 780000 UG/L 3/16 SYR4 2012–2018
Combined Uranium 4.172 UG/L 2/8 SYR4 2012–2019
Selenium 2.2 UG/L 1/20 SYR4 2012–2018
87 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,3,7,8-TCDD2,4,5-TP2,4-D4:2 FTS6:2 FTS8:2 FTS9Cl-PF3ONSADONAAntimony, TotalAsbestosAtrazineBHC-GAMMABenzeneBenzo(a)pyreneBeryllium, TotalCHLOROBENZENECYANIDECadmiumCarbofuranCarbon tetrachlorideChlordaneChromiumCombined Radium (-226 and -228)DICHLOROMETHANEDalaponDi(2-ethylhexyl) adipateDi(2-ethylhexyl) phthalateDinosebDiquatETHYLENE DIBROMIDEEndothallEndrinEthylbenzeneGlyphosateHEXACHLOROBENZENEHFPO-DAHeptachlorHeptachlor epoxideHexachlorocyclopentadieneLASSOLeadMercuryMethoxychlorNEtFOSAANFDHANMeFOSAANitriteOXAMYLPFBAPFBSPFDAPFDoAPFEESAPFHpAPFHpSPFHxAPFMBAPFMPAPFNAPFOAPFPeAPFPeSPFTAPFTrDAPFUnAPentachlorophenolPicloramSimazineStyreneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneVinyl chlorideXylenes, Totalcis-1,2-Dichloroethylenelithiumo-Dichlorobenzenep-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
FLORES, ROCIO
Phone
626-250-1517
Email
Rocio.Flores@gswater.com