chloromethane is a chemical contaminant that is a potential threat to human health.
| Cameron Parish Water & WW District #1 | 11.3 µg/L (on 2/11/2014) | LA |
|---|---|---|
| Golden State Water Co. - Southwest | 11 µg/L (on 12/16/2013) | CA |
| Cocos | 10.40 µg/L (on 2/26/2013) | PR |
| City of Pleasanton | 8.09 µg/L (on 12/18/2013) | TX |
| City of San Jacinto | 5.30 µg/L (on 4/9/2014) | CA |
| Cabo Rojo | 5.11 µg/L (on 9/16/2015) | PR |
| South Elgin | 4.7520 µg/L (on 6/3/2014) | IL |
| Olivehurst Public Utility District | 4 µg/L (on 10/22/2013) | CA |
| United Water System | 2.5 µg/L (on 11/4/2015) | LA |
| Sebring Water & Sewer System | 2.20 µg/L (on 9/11/2013) | FL |
| City of Newberg | 2.20 µg/L (on 5/19/2014) | OR |
| Crystal Lake | 2.01 µg/L (on 5/13/2014) | IL |
| City of Saratoga Springs | 1.92 µg/L (on 2/4/2014) | NY |
| Wayside Water Association | 1.75 µg/L (on 11/11/2013) | MS |
| Nunda Utilities Company | 1.7 µg/L (on 12/15/2015) | IL |
| Cotto Laurel | 1.63 µg/L (on 2/13/2014) | PR |
| Baltimore City | 1.60 µg/L (on 7/22/2015) | MD |
| Martin Springs WSC | 1.48 µg/L (on 9/5/2013) | TX |
| City of Lemoore | 1.40 µg/L (on 10/21/2013) | CA |
| Cary | 1.3220 µg/L (on 5/20/2013) | IL |
| Polk County Utilities - Central | 1.30 µg/L (on 6/19/2014) | FL |
| Foxboro Water Department | 1.30 µg/L (on 11/5/2014) | MA |
| City of Alvin | 1.30 µg/L (on 9/22/2014) | TX |
| City of West Columbia | 1.29 µg/L (on 9/14/2015) | TX |
| City of Inglewood Water Department | 1.20 µg/L (on 2/19/2015) | CA |
| Northwest Utilities | 1.20 µg/L (on 1/14/2014) | FL |
| West Monroe Water System | 1.20 µg/L (on 8/27/2013) | LA |
| City of Greenville | 1.1380 µg/L (on 12/17/2014) | MS |
| Aqua IL - Kankakee | 1.10 µg/L (on 3/10/2015) | IL |
| Abington/Rockland Joint Waterworks | 1.10 µg/L (on 9/10/2014) | MA |
| Carolina Beach Water System | 1.10 µg/L (on 12/3/2014) | NC |
| Wright Water & Sewer District | 1.04 µg/L (on 5/20/2014) | WY |
| City of Lomita Water Department | 1 µg/L (on 2/18/2015) | CA |
| SCWA Laguna/Vineyard | 1 µg/L (on 10/16/2013) | CA |
| City of Santa Rosa | 1 µg/L (on 1/6/2014) | CA |
| Aguas Buenas Urbano | 0.94 µg/L (on 11/29/2016) | PR |
| City of Pineville | 0.93 µg/L (on 8/5/2014) | LA |
| Vermilion Parish Waterworks District #1 | 0.92 µg/L (on 6/16/2014) | LA |
| Elgin | 0.90 µg/L (on 3/4/2015) | IL |
| Village Water System | 0.85 µg/L (on 4/11/2013) | LA |
| Long Island American Water Corporation | 0.80 µg/L (on 11/13/2015) | NY |
| Maynard DPW Water Division | 0.79 µg/L (on 1/26/2016) | MA |
| Keatchie Water System | 0.754 µg/L (on 9/8/2015) | LA |
| Cassatt Water Kershaw-Lee Co. RWA | 0.75 µg/L (on 11/3/2014) | SC |
| Clifton Park Water Authority | 0.74 µg/L (on 9/17/2013) | NY |
| Reid Road MUD 1 | 0.739 µg/L (on 7/21/2014) | TX |
| City of Clermont | 0.70 µg/L (on 1/13/2015) | FL |
| Rapides Parish Waterworks District #3 | 0.70 µg/L (on 7/23/2013) | LA |
| Franklin Water Department | 0.70 µg/L (on 8/12/2015) | TN |
| City of Gautier | 0.6660 µg/L (on 11/19/2013) | MS |