Public Water Utilities in Zip Code 78521

Select your public water supply (PWS) from the list below. Water supplies are not necessarily mapped to ZIP codes so MyTapWater.org will return a list of the top water supplies in your area (ordered by population served). If you don’t recognize a name from the list — it will be on your water bill or yearly Consumer Confidence Report (CCR) — then you will likely be in the top one or two options.




Top 20 public water systems in Cameron county (by population):
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