WATER & SEWER COMMISSION 4 OF ST MARY
LA · PWS ID LA1101011 · Community water system
112
contaminants tested
25
detected
9,709
people served
PFAS detected
“Forever chemicals” from UCMR-5 — the only fresh nationwide measurements (2023–2025).
| Contaminant | Max | Detection rate | Period |
|---|---|---|---|
| PFBA | 0.0229 ug/L | 2/4 | 2024 |
Other contaminants detected
| Contaminant | Max | Detection rate | Source | Period |
|---|---|---|---|---|
| Chloroform | 67.9 UG/L | 66/66 | SYR4 | 2012–2019 |
| Bromodichloromethane | 22 UG/L | 65/66 | SYR4 | 2012–2019 |
| TTHM | 80.8 UG/L | 63/63 | SYR4 | 2012–2019 |
| Dichloroacetic Acid | 45.3 UG/L | 62/64 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 78.9 UG/L | 62/64 | SYR4 | 2012–2019 |
| Trichloroacetic Acid | 32.8 UG/L | 62/64 | SYR4 | 2012–2019 |
| Dibromochloromethane | 16 UG/L | 56/65 | SYR4 | 2012–2019 |
| Dibromoacetic acid | 6.6 UG/L | 45/65 | SYR4 | 2012–2019 |
| Monochloroacetic acid | 11.9 UG/L | 38/64 | SYR4 | 2012–2019 |
| COPPER, FREE | 1100 UG/L | 31/45 | SYR4 | 2014–2019 |
| Lead | 5 UG/L | 23/45 | SYR4 | 2014–2019 |
| LEAD SUMMARY | 0.0080 mg/L | 12/12 | LCR | 2023 |
| Nitrate-Nitrite | 760 UG/L | 10/16 | SYR4 | 2012–2019 |
| Monobromoacetic acid | 7.7 UG/L | 8/65 | SYR4 | 2012–2019 |
| Di(2-ethylhexyl) phthalate | 1.36 UG/L | 6/16 | SYR4 | 2012–2019 |
| Fluoride | 100 UG/L | 6/8 | SYR4 | 2012–2019 |
| Barium | 72 UG/L | 5/8 | SYR4 | 2012–2019 |
| Bromoform | 3.5 UG/L | 4/68 | SYR4 | 2012–2019 |
| Dalapon | 38.27 UG/L | 4/13 | SYR4 | 2012–2019 |
| Gross Beta Particle Activity | 3.54 PCI/L | 4/8 | SYR4 | 2012–2019 |
| Atrazine | 0.4400 UG/L | 3/16 | SYR4 | 2012–2019 |
| Combined Radium (-226 and -228) | 0.8000 PCI/L | 2/5 | SYR4 | 2015–2019 |
| Xylenes, Total | 1.7 UG/L | 2/8 | SYR4 | 2012–2019 |
| Selenium | 1 UG/L | 1/8 | SYR4 | 2012–2019 |
87 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, TotalArsenicAsbestosBHC-GAMMABenzeneBenzo(a)pyreneBeryllium, TotalCHLOROBENZENECYANIDECadmiumCarbofuranCarbon tetrachlorideChlordaneChromiumCombined UraniumDICHLOROMETHANEDi(2-ethylhexyl) adipateDinosebDiquatETHYLENE DIBROMIDEEndothallEndrinEthylbenzeneGlyphosateGross Alpha, Excl. Radon and UHEXACHLOROBENZENEHFPO-DAHeptachlorHeptachlor epoxideHexachlorocyclopentadieneLASSOMercuryMethoxychlorNEtFOSAANFDHANMeFOSAAOXAMYLPFBSPFDAPFDoAPFEESAPFHpAPFHpSPFHxAPFHxSPFMBAPFMPAPFNAPFOAPFOSPFPeAPFPeSPFTAPFTrDAPFUnAPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl chloridecis-1,2-Dichloroethylenelithiumo-Dichlorobenzenep-Dichlorobenzenetrans-1,2-Dichloroethylene