WWKS DISTRICT 2 OF ST HELENA
LA · PWS ID LA1091007 · Community water system
112
contaminants tested
19
detected
8,772
people served
Other contaminants detected
| Contaminant | Max | Detection rate | Source | Period |
|---|---|---|---|---|
| Lead | 4 UG/L | 13/43 | SYR4 | 2012–2019 |
| Nitrate-Nitrite | 50 UG/L | 10/52 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 14.2 UG/L | 10/14 | SYR4 | 2013–2019 |
| Dichloroacetic Acid | 9.1 UG/L | 9/14 | SYR4 | 2013–2019 |
| Trichloroacetic Acid | 5.7 UG/L | 9/14 | SYR4 | 2013–2019 |
| Bromodichloromethane | 6.8 UG/L | 8/14 | SYR4 | 2013–2019 |
| Chloroform | 21.2 UG/L | 8/14 | SYR4 | 2013–2019 |
| Dibromochloromethane | 4 UG/L | 8/14 | SYR4 | 2013–2019 |
| TTHM | 29.9 UG/L | 8/14 | SYR4 | 2013–2019 |
| lithium | 15.2 ug/L | 8/14 | UCMR-5 | 2025 |
| Fluoride | 400 UG/L | 7/9 | SYR4 | 2013–2019 |
| LEAD SUMMARY | 0.0030 mg/L | 7/7 | LCR | 2025 |
| Di(2-ethylhexyl) phthalate | 0.5800 UG/L | 3/10 | SYR4 | 2013–2019 |
| Dibromoacetic acid | 1.7 UG/L | 3/14 | SYR4 | 2013–2019 |
| Combined Radium (-226 and -228) | 1.2 PCI/L | 2/7 | SYR4 | 2016–2019 |
| COPPER, FREE | 100 UG/L | 1/43 | SYR4 | 2012–2019 |
| Diquat | 0.3100 UG/L | 1/10 | SYR4 | 2013–2019 |
| Gross Alpha, Excl. Radon and U | 2.17 PCI/L | 1/6 | SYR4 | 2013–2016 |
| Gross Beta Particle Activity | 2.14 PCI/L | 1/10 | SYR4 | 2013–2019 |
93 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-GAMMABariumBenzeneBenzo(a)pyreneBeryllium, TotalBromoformCHLOROBENZENECYANIDECadmiumCarbofuranCarbon tetrachlorideChlordaneChromiumCombined UraniumDICHLOROMETHANEDalaponDi(2-ethylhexyl) adipateDinosebETHYLENE DIBROMIDEEndothallEndrinEthylbenzeneGlyphosateHEXACHLOROBENZENEHFPO-DAHeptachlorHeptachlor epoxideHexachlorocyclopentadieneLASSOMercuryMethoxychlorMonobromoacetic acidMonochloroacetic acidNEtFOSAANFDHANMeFOSAAOXAMYLPFBAPFBSPFDAPFDoAPFEESAPFHpAPFHpSPFHxAPFHxSPFMBAPFMPAPFNAPFOAPFOSPFPeAPFPeSPFTAPFTrDAPFUnAPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl chlorideXylenes, Totalcis-1,2-Dichloroethyleneo-Dichlorobenzenep-Dichlorobenzenetrans-1,2-Dichloroethylene