HELENA WATER SYSTEM
MT · PWS ID MT0000241 · Community water system
103
contaminants tested
24
detected
32,091
people served
Other contaminants detected
| Contaminant | Max | Detection rate | Source | Period |
|---|---|---|---|---|
| Chloroform | 91 UG/L | 137/138 | SYR4 | 2012–2019 |
| TTHM | 99 UG/L | 137/138 | SYR4 | 2012–2019 |
| Bromodichloromethane | 12 UG/L | 134/138 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 92 UG/L | 119/119 | SYR4 | 2012–2019 |
| Dichloroacetic Acid | 49 UG/L | 113/119 | SYR4 | 2012–2019 |
| Trichloroacetic Acid | 40 UG/L | 112/119 | SYR4 | 2012–2019 |
| COPPER, FREE | 1060 UG/L | 105/105 | SYR4 | 2012–2018 |
| Monochloroacetic acid | 8.3 UG/L | 79/119 | SYR4 | 2012–2019 |
| Dibromochloromethane | 3.6 UG/L | 72/138 | SYR4 | 2012–2019 |
| Nitrate-Nitrite | 1580 UG/L | 54/58 | SYR4 | 2012–2019 |
| Lead | 19 UG/L | 50/105 | SYR4 | 2012–2018 |
| Dibromoacetic acid | 1.2 UG/L | 47/119 | SYR4 | 2012–2019 |
| Arsenic | 31 UG/L | 29/31 | SYR4 | 2012–2019 |
| LEAD SUMMARY | 0.0070 mg/L | 15/15 | LCR | 2024 |
| Monobromoacetic acid | 1.9 UG/L | 9/119 | SYR4 | 2012–2019 |
| Bromoform | 1.2 UG/L | 7/138 | SYR4 | 2012–2019 |
| Fluoride | 800 UG/L | 4/6 | SYR4 | 2012–2017 |
| lithium | 78 ug/L | 3/9 | UCMR-5 | 2024 |
| Combined Uranium | 3 UG/L | 2/3 | SYR4 | 2017 |
| Cadmium | 2 UG/L | 1/6 | SYR4 | 2012–2017 |
| Carbofuran | 40 UG/L | 1/9 | SYR4 | 2012–2017 |
| Gross Alpha, Excl. Radon and U | 2.2 PCI/L | 1/3 | SYR4 | 2017 |
| OXAMYL | 200 UG/L | 1/9 | SYR4 | 2012–2017 |
| trans-1,2-Dichloroethylene | 0.5700 UG/L | 1/19 | SYR4 | 2012–2019 |
79 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,4,5-TP2,4-D4:2 FTS6:2 FTS8:2 FTS9Cl-PF3ONSADONAAntimony, TotalAsbestosAtrazineBHC-GAMMABariumBenzeneBenzo(a)pyreneBeryllium, TotalCHLOROBENZENECarbon tetrachlorideChlordaneChromiumCombined Radium (-226 and -228)DICHLOROMETHANEDalaponDi(2-ethylhexyl) adipateDi(2-ethylhexyl) phthalateDinosebEndrinEthylbenzeneHEXACHLOROBENZENEHFPO-DAHeptachlorHeptachlor epoxideHexachlorocyclopentadieneLASSOMercuryMethoxychlorNEtFOSAANFDHANMeFOSAAPFBAPFBSPFDAPFDoAPFEESAPFHpAPFHpSPFHxAPFHxSPFMBAPFMPAPFNAPFOAPFOSPFPeAPFPeSPFTAPFTrDAPFUnAPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl chlorideXylenes, Totalcis-1,2-Dichloroethyleneo-Dichlorobenzenep-Dichlorobenzene
Areas served
HELENA