MAYWOOD MUTUAL WATER CO. #1
CA · PWS ID CA1910084 · Community water system
111
contaminants tested
17
detected
5,500
people served
PFAS detected
“Forever chemicals” from UCMR-5 — the only fresh nationwide measurements (2023–2025).
| Contaminant | Max | Detection rate | Period |
|---|---|---|---|
| PFOS | 0.0113 ug/L | 4/4 | 2024 |
Other contaminants detected
| Contaminant | Max | Detection rate | Source | Period |
|---|---|---|---|---|
| TTHM | 58.5 UG/L | 61/64 | SYR4 | 2012–2019 |
| Bromoform | 21.1 UG/L | 58/64 | SYR4 | 2012–2019 |
| Dibromochloromethane | 18.2 UG/L | 58/64 | SYR4 | 2012–2019 |
| Bromodichloromethane | 17.4 UG/L | 51/64 | SYR4 | 2012–2019 |
| Chloroform | 21.1 UG/L | 50/64 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 26.8 UG/L | 50/64 | SYR4 | 2012–2019 |
| Dibromoacetic acid | 5.9 UG/L | 49/64 | SYR4 | 2012–2019 |
| LEAD SUMMARY | 0.0090 mg/L | 41/41 | LCR | 2024 |
| Dichloroacetic Acid | 16.6 UG/L | 39/64 | SYR4 | 2012–2019 |
| Trichloroacetic Acid | 6.4 UG/L | 31/64 | SYR4 | 2012–2019 |
| Nitrate | 1100 UG/L | 16/34 | SYR4 | 2012–2019 |
| Fluoride | 600 UG/L | 9/9 | SYR4 | 2012–2018 |
| Barium | 190 UG/L | 8/9 | SYR4 | 2012–2018 |
| Combined Uranium | 3.278 UG/L | 2/5 | SYR4 | 2012–2018 |
| Nitrate-Nitrite | 1000000 UG/L | 2/4 | SYR4 | 2012–2017 |
| lithium | 12.6 ug/L | 2/4 | UCMR-5 | 2024 |
94 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 epoxideHexachlorocyclopentadieneLASSOLeadMercuryMethoxychlorMonobromoacetic acidMonochloroacetic acidNEtFOSAANFDHANMeFOSAANitriteOXAMYLPFBAPFBSPFDAPFDoAPFEESAPFHpAPFHpSPFHxAPFHxSPFMBAPFMPAPFNAPFOAPFPeAPFPeSPFTAPFTrDAPFUnAPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl chlorideXylenes, Totalcis-1,2-Dichloroethyleneo-Dichlorobenzenep-Dichlorobenzenetrans-1,2-Dichloroethylene