| LA1021001 | CLARKS WATER SYSTEM |
| LA1021002 | COLUMBIA WATER SYSTEM |
| LA1021003 | COLUMBIA HEIGHTS WATER DISTRICT |
| LA1021004 | EAST COLUMBIA WATER SYSTEM |
| LA1021005 | GRAYSON WATER SYSTEM |
| LA1021006 | HEBERT WATER SYSTEM |
| LA1021007 | HOLUM WATER SYSTEM |
| LA1021008 | KELLY WATER DISTRICT |
| LA1021009 | COTTON PLANT WATER SYSTEM |
| LA1021010 | WARDS 4 & 5 WATER SYSTEM |
| LA1021011 | VIXEN WATER SYSTEM |