perchlorate is a chemical contaminant that is a potential threat to human health.
| UTUADO URBANO | 420 µg/L (on 2/27/2002) | PR |
|---|---|---|
| ATLANTIC BEACH WATER SYSTEM | 200 µg/L (on 8/26/2002) | FL |
| SEBRING WATER & SEWER SYSTEM | 70 µg/L (on 12/20/2001) | FL |
| REDLANDS CITY MUD-WATER DIV | 67 µg/L (on 4/29/2003) | CA |
| Riverside, City of | 42 µg/L (on 11/8/2001) | CA |
| OCONEE CO.-WATKINSVILLE | 38 µg/L (on 7/23/2001) | GA |
| PASADENA-CITY, WATER DEPT. | 35 µg/L (on 5/9/2001) | CA |
| RIALTO-CITY | 33 µg/L (on 7/26/2004) | CA |
| MEADVILLE AREA WATER AUTHORITY | 32.7 µg/L (on 2/13/2001) | PA |
| HECLA WATER ASSOCIATION-PLANT PWS | 32.3 µg/L (on 1/22/2002) | OH |
| CITY OF LEVELLAND | 32 µg/L (on 4/9/2002) | TX |
| MANATEE COUNTY UTILITIES OPERATIONS DEPT | 30 µg/L (on 1/31/2001) | FL |
| ENID | 30 µg/L (on 7/24/2002) | OK |
| FAIRFIELD CITY PWS | 27.1 µg/L (on 11/12/2002) | OH |
| ST CHARLES WATER DIST NO 1 | 24 µg/L (on 2/20/2001) | LA |
| HENDERSON CITY OF | 23 µg/L (on 11/19/2002) | NV |
| CWSC Salinas | 22.3 µg/L (on 12/12/2002) | CA |
| CITY OF CHINO | 21 µg/L (on 10/3/2002) | CA |
| Tracy, City of | 21 µg/L (on 11/18/2002) | CA |
| LA VERNE, CITY WD | 20 µg/L (on 1/6/2004) | CA |
| DEMING MUNICIPAL WATER SYSTEM | 20 µg/L (on 5/14/2002) | NM |
| CHAPEL HILL | 19.9 µg/L (on 3/27/2001) | MD |
| HILLDALE WATER DISTRICT | 19.6 µg/L (on 12/5/2002) | MS |
| CITY OF ABERDEEN | 19.2 µg/L (on 3/27/2001) | MD |
| City of Stockton | 19 µg/L (on 5/30/2001) | CA |
| SOUTHERN NEVADA WATER SYSTEM | 17.2 µg/L (on 11/19/2002) | NV |
| WRIGHT-PATTERSON AFB AREA B PWS | 17.2 µg/L (on 2/6/2002) | OH |
| PALM BEACH COUNTY SYSTEM 10 | 17 µg/L (on 12/17/2003) | FL |
| CREEK CO RWD # 1 | 17 µg/L (on 1/27/2003) | OK |
| EAST VALLEY WD | 16 µg/L (on 7/23/2001) | CA |
| AVON PARK, CITY OF | 16 µg/L (on 12/19/2001) | FL |
| LINCOLN AVENUE WATER CO. | 15 µg/L (on 2/1/2005) | CA |
| SAN GABRIEL VALLEY WC - FONTANA | 15 µg/L (on 6/15/2001) | CA |
| COMMONWEALTH UTILITIES CORP. (SAIPAN) | 14 µg/L (on 10/21/2001) | MP |
| WESTBURY WD | 14 µg/L (on 6/27/2001) | NY |
| HIGH POINT, CITY OF | 13.8 µg/L (on 12/5/2001) | NC |
| Corona, City of | 13 µg/L (on 7/8/2003) | CA |
| PARK RIDGE WATER DEPT | 13 µg/L (on 7/17/2003) | NJ |
| MOORE | 13 µg/L (on 1/29/2003) | OK |
| WOODWARD | 13 µg/L (on 1/22/2003) | OK |
| SUFFOLK COUNTY WATER AUTHORITY | 12.1 µg/L (on 4/4/2001) | NY |
| COLUMBIA WATER CO | 12.1 µg/L (on 1/25/2001) | PA |
| POMONA - CITY, WATER DEPT. | 12 µg/L (on 1/7/2003) | CA |
| ONTARIO, CITY OF | 12 µg/L (on 12/27/2001) | CA |
| TUCSON, CITY OF | 11.9 µg/L (on 1/4/2001) | AZ |
| MONTGOMERY WATER WORKS | 11 µg/L (on 9/19/2001) | AL |
| AZUSA LIGHT AND WATER | 11 µg/L (on 6/19/2002) | CA |
| PLAINVIEW WD | 11 µg/L (on 6/27/2001) | NY |
| BIXBY PUBLIC WORKS AUTHORITY | 11 µg/L (on 1/30/2003) | OK |
| HOKE CO REGIONAL WATER SYSTEM | 10.4 µg/L (on 7/21/2003) | NC |