MAYWOOD MUTUAL WATER CO. #3
CA · PWS ID CA1910086 · Community water system
110
contaminants tested
20
detected
6,059
people served
PFAS detected
“Forever chemicals” from UCMR-5 — the only fresh nationwide measurements (2023–2025).
| Contaminant | Max | Detection rate | Period |
|---|---|---|---|
| PFOS | 0.0264 ug/L | 4/6 | 2025 |
| PFHxS | 0.0061 ug/L | 3/6 | 2025 |
| PFOA | 0.0073 ug/L | 3/6 | 2025 |
Other contaminants detected
| Contaminant | Max | Detection rate | Source | Period |
|---|---|---|---|---|
| Trichloroethylene | 5.5 UG/L | 64/94 | SYR4 | 2012–2019 |
| TTHM | 109.9 UG/L | 63/116 | SYR4 | 2012–2019 |
| Dibromochloromethane | 42.7 UG/L | 62/116 | SYR4 | 2012–2019 |
| Bromodichloromethane | 19 UG/L | 60/117 | SYR4 | 2012–2019 |
| Bromoform | 40.8 UG/L | 60/116 | SYR4 | 2012–2019 |
| Nitrate | 3842 UG/L | 54/68 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 19.8 UG/L | 53/64 | SYR4 | 2012–2019 |
| Dibromoacetic acid | 15.9 UG/L | 51/64 | SYR4 | 2012–2019 |
| Chloroform | 9.3 UG/L | 47/118 | SYR4 | 2012–2019 |
| LEAD SUMMARY | 0.0050 mg/L | 39/39 | LCR | 2025 |
| Dichloroacetic Acid | 3.3 UG/L | 24/64 | SYR4 | 2012–2019 |
| Trichloroacetic Acid | 3 UG/L | 18/64 | SYR4 | 2012–2019 |
| Lead | 60 UG/L | 10/198 | SYR4 | 2014–2019 |
| Fluoride | 350 UG/L | 5/6 | SYR4 | 2014–2019 |
| Combined Uranium | 3.129 UG/L | 4/8 | SYR4 | 2014–2019 |
| lithium | 21.8 ug/L | 3/6 | UCMR-5 | 2025 |
| Barium | 120 UG/L | 2/6 | SYR4 | 2014–2019 |
90 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, TotalArsenicAsbestosAtrazineBHC-GAMMABenzeneBenzo(a)pyreneBeryllium, TotalCHLOROBENZENECOPPER, FREECYANIDECadmiumCarbofuranCarbon tetrachlorideChlordaneChromiumDICHLOROMETHANEDalaponDi(2-ethylhexyl) adipateDi(2-ethylhexyl) phthalateDinosebDiquatETHYLENE DIBROMIDEEndothallEndrinEthylbenzeneGlyphosateHEXACHLOROBENZENEHFPO-DAHeptachlorHeptachlor epoxideHexachlorocyclopentadieneLASSOMercuryMethoxychlorMonobromoacetic acidMonochloroacetic acidNEtFOSAANFDHANMeFOSAANitriteOXAMYLPFBAPFBSPFDAPFDoAPFEESAPFHpAPFHpSPFHxAPFMBAPFMPAPFNAPFPeAPFPeSPFTAPFTrDAPFUnAPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneVinyl chlorideXylenes, Totalcis-1,2-Dichloroethyleneo-Dichlorobenzenep-Dichlorobenzenetrans-1,2-Dichloroethylene