GSWC-SOUTH ARCADIA
CA · PWS ID CA1910212 · Community water system
81
contaminants tested
19
detected
27,072
people served
PFAS detected
“Forever chemicals” from UCMR-5 — the only fresh nationwide measurements (2023–2025).
| Contaminant | Max | Detection rate | Period |
|---|---|---|---|
| PFHxS | 0.0070 ug/L | 6/10 | 2024 |
| PFOS | 0.0220 ug/L | 6/10 | 2024 |
| PFOA | 0.0055 ug/L | 4/10 | 2024 |
Other contaminants detected
| Contaminant | Max | Detection rate | Source | Period |
|---|---|---|---|---|
| Trichloroethylene | 20 UG/L | 562/1681 | SYR4 | 2012–2019 |
| Nitrate | 6328 UG/L | 550/550 | SYR4 | 2012–2019 |
| Tetrachloroethylene | 7.8 UG/L | 353/1634 | SYR4 | 2012–2019 |
| TTHM | 9.6 UG/L | 82/124 | SYR4 | 2012–2019 |
| Dibromochloromethane | 3.2 UG/L | 46/124 | SYR4 | 2012–2019 |
| LEAD SUMMARY | 0.0050 mg/L | 40/40 | LCR | 2023 |
| Fluoride | 910 UG/L | 39/39 | SYR4 | 2012–2019 |
| Bromoform | 3.3 UG/L | 30/124 | SYR4 | 2012–2019 |
| Bromodichloromethane | 2.3 UG/L | 27/124 | SYR4 | 2012–2019 |
| Chloroform | 1.8 UG/L | 15/124 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 3.5 UG/L | 11/124 | SYR4 | 2012–2019 |
| Dibromoacetic acid | 1.3 UG/L | 10/124 | SYR4 | 2012–2019 |
| Combined Uranium | 4.619 UG/L | 8/8 | SYR4 | 2012–2018 |
| Nitrate-Nitrite | 5600 UG/L | 7/7 | SYR4 | 2018–2019 |
| DICHLOROMETHANE | 3.4 UG/L | 2/332 | SYR4 | 2012–2019 |
| Monochloroacetic acid | 2.6 UG/L | 2/124 | SYR4 | 2012–2019 |
62 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS4:2 FTS6:2 FTS8:2 FTS9Cl-PF3ONSADONAAntimony, TotalArsenicBariumBenzeneBeryllium, TotalCHLOROBENZENECOPPER, FREECYANIDECadmiumCarbon tetrachlorideChromiumDi(2-ethylhexyl) phthalateDichloroacetic AcidEthylbenzeneHFPO-DALeadMercuryMonobromoacetic acidNEtFOSAANFDHANMeFOSAANitritePFBAPFBSPFDAPFDoAPFEESAPFHpAPFHpSPFHxAPFMBAPFMPAPFNAPFPeAPFPeSPFTAPFTrDAPFUnASeleniumStyreneThallium, TotalTolueneTrichloroacetic AcidVinyl chlorideXylenes, Totalcis-1,2-Dichloroethylenelithiumo-Dichlorobenzenep-Dichlorobenzenetrans-1,2-Dichloroethylene