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ZIP 78523

Water quality in Brownsville, TX (78523)

Drinking water in ZIP 78523 (Brownsville, Cameron County) comes from 20 public water system s on EPA's records. The list below is ranked by population served: the largest regional authority for your area appears first, smaller subdivisions and private systems below.

Combined population served: 436,709 people.

Public water systems serving ZIP 78523

Ranked by population served. Tier badges show how EPA records each utility's service area: "Serves your city" means EPA's geographic-areas table specifically lists Brownsville; "Serves your county" means the utility serves Cameron County (regional authorities are usually filed this way); "Billing address at this ZIP" means the utility files paperwork from this ZIP but EPA does not confirm it serves you.

  1. BROWNSVILLE PUBLIC UTILITIES BOARD

    BROWNSVILLE · PWSID TX0310001

    Serves 201k people

    Serves your county
  2. HARLINGEN WATER WORKS SYSTEM

    HARLINGEN · PWSID TX0310002

    Serves 86k people

    Serves your county
  3. LAGUNA MADRE WATER DISTRICT

    PORT ISABEL · PWSID TX0310005

    Serves 47k people

    Serves your county
  4. EAST RIO HONDO WSC

    RIO HONDO · PWSID TX0310096

    Serves 25k people

    Serves your county
  5. CITY OF SAN BENITO

    SAN BENITO · PWSID TX0310007

    Serves 24k people

    Serves your county
  6. EL JARDIN WSC

    BROWNSVILLE · PWSID TX0310022

    Serves 9,423 people

    Serves your county
  7. OLMITO WSC

    OLMITO · PWSID TX0310026

    Serves 8,952 people

    Serves your county
  8. CITY OF LA FERIA

    LA FERIA · PWSID TX0310003

    Serves 7,226 people

    Serves your county
  9. CITY OF LOS FRESNOS

    LOS FRESNOS · PWSID TX0310004

    Serves 6,009 people

    Serves your county
  10. CITY OF PRIMERA

    HARLINGEN · PWSID TX0310094

    Serves 5,811 people

    Serves your county
  11. VALLEY MUD 2 RANCHO VIEJO

    RANCHO VIEJO · PWSID TX0310059

    Serves 3,644 people

    Serves your county
  12. CITY OF COMBES

    COMBES · PWSID TX0310021

    Serves 2,895 people

    Serves your county
  13. CITY OF SANTA ROSA

    SANTA ROSA · PWSID TX0310009

    Serves 2,883 people

    Serves your county
  14. CITY OF RIO HONDO

    RIO HONDO · PWSID TX0310006

    Serves 2,640 people

    Serves your county
  15. EAST RIO HONDO WSC ARROYO CITY

    RIO HONDO · PWSID TX0310031

    Serves 1,953 people

    Serves your county
  16. TOWN OF INDIAN LAKE

    LOS FRESNOS · PWSID TX0310008

    Serves 888 people

    Serves your county
  17. STARBASE WATER SYSTEM

    BROWNSVILLE · PWSID TX0310154

    Serves 743 people

    Serves your county
  18. CAREFREE VALLEY RESORT

    HARLINGEN · PWSID TX0310145

    Serves 600 people

    Serves your county
  19. MILITARY HWY WSC DEL MAR HEIGHTS

    PROGRESO · PWSID TX0310147

    Serves 213 people

    Serves your county
  20. SOUTHMOST REGIONAL WATER AUTHORITY

    BROWNSVILLE · PWSID TX0310150

    Serves 0 people

    Serves your county

More for TX

How we matched ZIP 78523: we translate the ZIP to a city and county via the Geonames postal database, then match against service-area cities and counties EPA has on file for each public water system. EPA does not publish authoritative service-area boundary maps for most systems, so there is still some guesswork; large regional authorities (e.g., county-wide water and sewer authorities) are usually filed at the county level even when they serve specific cities. Your water bill names the authoritative utility. Methodology.