We found 44 public water systems in Cameron county (ordered by population size).
| Name | Areas served | Population served | Contaminant count | Violation count |
|---|---|---|---|---|
| Brownsville Public Utilities Board | Brownsville | 176,362 | 72 | 4 |
| Harlingen Water Works System | Harlingen | 85,900 | 62 | 2 |
| City Of San Benito | San Benito | 24,250 | 73 | 32 |
| East Rio Hondo Wsc | Rio Hondo | 20,225 | 35 | 6 |
| Laguna Madre Water District | Port Isabel | 19,317 | 58 | 36 |
| El Jardin Wsc | Brownsville | 10,209 | 30 | 16 |
| City Of La Feria | County of Cameron | 8,296 | 0 | 32 |
| Olmito Wsc | County of Cameron | 5,800 | 0 | 31 |
| City Of Los Fresnos | County of Cameron | 5,542 | 0 | 45 |
| City Of Primera | County of Cameron | 4,070 | 0 | 4 |
| Brownsville Navigation District | County of Cameron | 2,941 | 0 | 6 |
| Town Of Combes | County of Cameron | 2,895 | 0 | 10 |
| City Of Santa Rosa | County of Cameron | 2,883 | 0 | 76 |
| Valley Mud 2 Rancho Viejo | County of Cameron | 2,500 | 0 | 2 |
| City Of Rio Hondo | Rio Hondo | 2,400 | 0 | 80 |
| East Rio Hondo Wsc Arroyo City | County of Cameron | 1,821 | 0 | 33 |
| East Rio Hondo Wsc N Harlingen | County of Cameron | 1,745 | 0 | 0 |
| City Of Palm Valley | County of Cameron | 1,299 | 0 | 12 |
| Valley Mud No 1 | County of Cameron | 1,236 | 0 | 0 |
| Port Isabel Detention Center | County of Cameron | 1,000 | 0 | 8 |
| Valley Baptist Medical Center | County of Cameron | 602 | 0 | 8 |
| Town Of Indian Lake | County of Cameron | 600 | 0 | 27 |
| River Bend Resort | County of Cameron | 344 | 0 | 0 |
| St Joseph Water & Ice Corp | County of Cameron | 300 | 0 | 0 |
| Military Hwy Wsc Del Mar Heights | County of Cameron | 213 | 0 | 3 |
| La Mirada Country Estates | County of Cameron | 162 | 0 | 8 |
| Carefree Valley Resort | County of Cameron | 100 | 0 | 0 |
| El Ranchito Restaurant | County of Cameron | 100 | 0 | 0 |
| Boca Chica Water System | County of Cameron | 90 | 0 | 0 |
| Layman's Valey Christian Encampmen | County of Cameron | 60 | 0 | 0 |
| White Swan Cash & Carry | County of Cameron | 50 | 0 | 0 |
| Lariat Rv & Mobile Home Park | County of Cameron | 40 | 0 | 0 |
| Farm Rv & Trailer Park | County of Cameron | 40 | 0 | 0 |
| Citrus Trailer Park | County of Cameron | 40 | 0 | 0 |
| Ken La Mobile Villa Gardens | County of Cameron | 35 | 0 | 0 |
| Santa Rosa Food Store | County of Cameron | 26 | 0 | 0 |
| Sunshine Store No 11 - 423 E H | County of Cameron | 25 | 0 | 0 |
| Hill Country Cupboard | County of Cameron | 25 | 0 | 0 |
| Paseo De La Resaca Mud No 3 | County of Cameron | 25 | 0 | 0 |
| Texas Fruit Market | County of Cameron | 25 | 0 | 0 |
| De Los Santos T P | County of Cameron | 20 | 0 | 0 |
| Decker M H P | County of Cameron | 9 | 0 | 0 |
| Southmost Regional Water Authority | County of Cameron | 0 | 0 | 0 |
| North Cameron Regional Water Treatment F | County of Cameron | 0 | 0 | 0 |