COMPTON-CITY, WATER DEPT.
CA · PWS ID CA1910026 · Community water system
112
contaminants tested
24
detected
74,877
people served
PFAS detected
“Forever chemicals” from UCMR-5 — the only fresh nationwide measurements (2023–2025).
| Contaminant | Max | Detection rate | Period |
|---|---|---|---|
| PFHxS | 0.0041 ug/L | 2/13 | 2024 |
| PFOS | 0.0170 ug/L | 2/13 | 2024 |
| PFOA | 0.0049 ug/L | 1/13 | 2024 |
Other contaminants detected
| Contaminant | Max | Detection rate | Source | Period |
|---|---|---|---|---|
| TTHM | 74.3 UG/L | 229/244 | SYR4 | 2012–2019 |
| Dibromochloromethane | 25.6 UG/L | 225/244 | SYR4 | 2012–2019 |
| Bromoform | 35.9 UG/L | 223/244 | SYR4 | 2012–2019 |
| Bromodichloromethane | 23.4 UG/L | 210/244 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 22.9 UG/L | 200/232 | SYR4 | 2012–2019 |
| Dibromoacetic acid | 7.6 UG/L | 195/232 | SYR4 | 2012–2019 |
| Chloroform | 19.5 UG/L | 184/244 | SYR4 | 2012–2019 |
| Dichloroacetic Acid | 10.5 UG/L | 82/232 | SYR4 | 2012–2019 |
| Tetrachloroethylene | 6.5 UG/L | 57/158 | SYR4 | 2012–2019 |
| Trichloroethylene | 3.9 UG/L | 44/146 | SYR4 | 2012–2019 |
| Trichloroacetic Acid | 6 UG/L | 39/232 | SYR4 | 2012–2019 |
| Nitrate | 1310.8 UG/L | 34/136 | SYR4 | 2012–2019 |
| Fluoride | 380 UG/L | 29/29 | SYR4 | 2012–2019 |
| LEAD SUMMARY | 0.0060 mg/L | 21/21 | LCR | 2024 |
| Barium | 150 UG/L | 17/29 | SYR4 | 2012–2019 |
| cis-1,2-Dichloroethylene | 2.3 UG/L | 15/138 | SYR4 | 2012–2019 |
| Arsenic | 5.1 UG/L | 10/29 | SYR4 | 2012–2019 |
| Combined Uranium | 8.195 UG/L | 6/10 | SYR4 | 2013–2019 |
| lithium | 58 ug/L | 4/13 | UCMR-5 | 2024 |
| COPPER, FREE | 4900 UG/L | 3/48 | SYR4 | 2012–2019 |
| Lead | 17 UG/L | 1/45 | SYR4 | 2012–2019 |
88 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-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 tetrachlorideChlordaneChromiumDICHLOROMETHANEDalaponDi(2-ethylhexyl) adipateDi(2-ethylhexyl) phthalateDinosebDiquatETHYLENE DIBROMIDEEndothallEndrinEthylbenzeneGlyphosateGross Beta Particle ActivityHEXACHLOROBENZENEHFPO-DAHeptachlorHeptachlor epoxideHexachlorocyclopentadieneLASSOMercuryMethoxychlorMonobromoacetic acidMonochloroacetic acidNEtFOSAANFDHANMeFOSAANitrate-NitriteNitriteOXAMYLPFBAPFBSPFDAPFDoAPFEESAPFHpAPFHpSPFHxAPFMBAPFMPAPFNAPFPeAPFPeSPFTAPFTrDAPFUnAPentachlorophenolPicloramSeleniumSimazineStyreneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneVinyl chlorideXylenes, Totalo-Dichlorobenzenep-Dichlorobenzenetrans-1,2-Dichloroethylene
Areas served
COMPTON