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RANKING · 2025 ACS 1-YEAR · 27 SHOWN OF 527

Highest share of homes on septic, US metro areas

US metro areas ranked by the share of occupied homes that drain to a septic tank instead of a public sewer in 2025. The American Community Survey asked this for the first time in 2025, and its 1-year estimates cover only places with 65,000 or more residents.

All statesAll rankings
SAME RANKING BYCitiesCountiesStates
RANKPLACESTATEPOPHOMES ON SEPTICVS –
501Trenton, NJNJ399,2897.0%–
502Houston, TXTX7,904,6276.9%–
503Dallas, TXTX8,477,1576.9%–
504Carson, NVNV58,5716.6%–
505Fargo, NDND269,5286.6%–
506Boulder, COCO328,5606.6%–
507Omaha, NENE1,009,8366.5%–
508Miami, FLFL6,391,0726.2%–
509St. George, UTUT213,6705.9%–
510Chicago, ILIL9,434,1235.6%–
511Phoenix, AZAZ5,228,9385.5%–
512San Diego, CACA3,282,2485.3%–
513Santa Maria, CACA442,0655.2%–
514Denver, COCO3,092,0375.1%–
515Lincoln, NENE352,0814.6%–
516Vallejo, CACA455,3763.8%–
517Oxnard, CACA830,8513.6%–
518El Paso, TXTX881,2913.2%–
519Ogden, UTUT672,7842.9%–
520San Jose, CACA1,984,4732.9%–
521Honolulu, HIHI988,7032.8%–
522Provo, UTUT773,4262.7%–
523Las Vegas, NVNV2,407,2262.4%–
524New Orleans, LALA970,8492.2%–
525Los Angeles, CACA12,844,4411.7%–
526San Francisco, CACA4,630,0411.4%–
527Salt Lake City, UTUT1,308,3771.1%–
SHOWING 501–527 OF 527

UPDATED 2026-10-29 · DATA: US CENSUS BUREAU ACS 1-YEAR ESTIMATES