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San Luis Obispo, CA · San Luis Obispo County

Water quality in San Luis Obispo, CA

22 community water systems are based in San Luis Obispo, CA, collectively serving 69,920 people. See per-utility violations, contaminants, and lead service line status.

At a glance

Community systems
22
People served
70k
Groundwater systems
59%
13 systems
Surface water systems
41%
9 systems

Community water systems based in San Luis Obispo

Systems whose EPA-filed administrative city is San Luis Obispo, sorted by population served. Regional authorities that serve San Luis Obispo but are based elsewhere are not listed here; check the ZIP lookup for a service-area-based answer.

  1. 1. SAN LUIS OBISPO WATER DEPARTMENT

    San Luis Obispo · PWSID CA4010009

    48k served
  2. 2. CALIFORNIA MENS COLONY

    San Luis Obispo · PWSID CA4010830

    15k served
  3. 3. LOPEZ PROJECT

    San Luis Obispo · PWSID CA4010022

    1,569 served
  4. 4. SLO CWWD NO. 23 - SANTA MARGARITA

    San Luis Obispo · PWSID CA4010024

    1,291 served
  5. 5. SLOCSA #10A - CAYUCOS

    San Luis Obispo · PWSID CA4010901

    1,200 served
  6. 6. SLO CSA NO. 16 - SHANDON

    San Luis Obispo · PWSID CA4010028

    1,085 served
  7. 7. LAUREATE WATER COMPANY

    San Luis Obispo · PWSID CA4000206

    700 served
  8. 8. SANTA YSABEL RANCH MWC

    San Luis Obispo · PWSID CA4000802

    344 served
  9. 9. GRAN CIELO MUTUAL WATER COMPANY

    San Luis Obispo · PWSID CA4000853

    139 served
  10. 10. IRISH HILLS MUTUAL WATER CO

    San Luis Obispo · PWSID CA4000203

    135 served
  11. 11. CALLENDER GROVE MUTUAL WATER

    San Luis Obispo · PWSID CA4000805

    126 served
  12. 12. LAS VENTANAS RANCH

    San Luis Obispo · PWSID CA4000815

    108 served
  13. 13. BARON CANYON MUTUAL WATER CO.

    San Luis Obispo · PWSID CA4000214

    81 served
  14. 14. AFUERA DE CHORRO WATER COMPANY

    San Luis Obispo · PWSID CA4000744

    79 served
  15. 15. AVILA VALLEY MUTUAL WATER CO

    San Luis Obispo · PWSID CA4000716

    75 served
  16. 16. MONTE SERENO MUTUAL BENEFIT WATER

    San Luis Obispo · PWSID CA4000808

    65 served
  17. 17. ANZA VINEYARD ESTATES MUTUAL WATER CO

    San Luis Obispo · PWSID CA4000834

    60 served
  18. 18. BEAR VALLEY WATER COMPANY

    San Luis Obispo · PWSID CA4000660

    45 served
  19. 19. HIGUERA APARTMENTS

    San Luis Obispo · PWSID CA4000563

    30 served
  20. 20. CHORRO VALLEY PIPELINE - SLO COUNTY

    San Luis Obispo · PWSID CA4010030

    0 served
  21. 21. NACIMIENTO WATER PROJECT

    San Luis Obispo · PWSID CA4010080

    0 served
  22. 22. SLO CSA NO. 10 - CAYUCOS WTP

    San Luis Obispo · PWSID CA4010025

    0 served

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