Tapcensus

Water quality for ZIP code 93549

ZIP 93549 covers Olancha and Cartago in Inyo County, California, one of 9 ZIP codes in the county. 115 active public water systems serve the county; 47 had an EPA violation in the past three years.

Most likely your provider

Cartago Mutual Water Company CA1400027 · Community water system · Ground water
Serves 132 people Rules violated, past 3 years 1 Last sanitary survey Jan 19, 2022 Distance 8.7 mi
View system details EPA facility report

Other community water systems in Inyo County

43 systems, nearest first
SystemServesStatusRules violated, 3 yrDistance
Keeler Community Service District
 66 2 19.6 mi
Darwin Community Service District
 25 2 20.2 mi
Ladwp Mountain View Trailer Court
 31 0 26.2 mi
Inyo County Pwd Lone Pine
 1,835 4 28.0 mi
Ladwp Lone Pine
 0 0 28.1 mi
North Lone Pine Mutual Water Company
 70 1 28.8 mi
Inyo County Pwd Independence
 1,108 3 43.1 mi
Nps Death Valley, Stovepipe Wells
 25 1 52.1 mi
Ladwp Independence
 0 0 54.7 mi
Aberdeen Water System
 43 0 55.5 mi
Nps Death Valley, Furnace Creek
 150 1 62.2 mi
Nps Death Valley, Cow Creek/nevares
 88 2 63.8 mi
Big Pine Csd
 798 1 68.6 mi
Ladwp Big Pine
 0 0 68.6 mi
Rolling Green Utilities, Inc.
 940 1 69.8 mi
Keough's Hot Springs
 75 0 75.8 mi
Valley Vista Mutual Water Company
 70 0 77.4 mi
Sierra North Community Service District
 42 1 77.8 mi
Rawson Creek Mutual Water Company
 90 0 78.0 mi
Sierra Grande Estates Mutual Water Co.
 138 0 78.2 mi
Aspendell Mutual Water Company
 60 0 79.5 mi
Van Loon Water Association
 25 0 82.4 mi
Brookside Mobile Home Park
 126 0 82.6 mi
Sce Bishop Creek Plant 4
 35 0 82.7 mi
Park West Mutual Water Company
 188 0 82.9 mi
All 44 community water systems in Inyo County
Non-community systems in Inyo County (71: schools, campgrounds, workplaces, restaurants)

These systems serve places you visit rather than homes.

SystemServesStatusRules violated, 3 yrUnresolved
Olancha RV and MHP
 39 0 0
Crystal Geyser Bottling Plant
 110 1 1
Coso Junction Ranch Store
 715 0 0
Ladwp Keeler Yard
 66 0 0
Horseshoe Meadow Campground
 1,052 0 0
Boulder Creek Trailer Park
 30,000 0 0
Lone Pine Oasis
 52 1 0
Diaz Lake Campground
 500 1 0
Mount Whitney Golf Club
 30 1 0
Quality Inn System
 150 0 0
Tuttle Creek Campground
 11,908 0 0
Panamint Springs Resort
 216 1 0
Pearsonville Water System
 1,515 0 0
Lone Pine Campground
 2,205 0 0
Whitney Portal
 500 0 0
Ladwp Manzanar
Bishop 		0 0 0
Nps Manzanar
 298 0 0
Grays Meadow Campground
 67 1 0
Taboose Creek Campground
 50 1 0
Nps Death Valley, Mesquite Springs
 35 0 0
Nps Death Valley, Grapevine RS
 27 0 0
Sage Flat Campground
 37 1 0
Bernasconi Education Center
 3 0 0
Palisade Glacier High School
 37 0 0
Glacier Lodge
 51 1 0
Parcher's Resort
 68 0 0
Lake Sabrina Boat Landing
 35 0 0
Bishop Creek Lodge
 305 0 0
High Sierra Water Company
 200 0 0
Sabrina Campground
 37 1 0
Upper Sage Flat Campground
 53 1 0
Cardinal Village Resort
 55 0 0
Four Jeffrey Campground
 142 1 0
Bishop Creek System
 4,839 0 0
Deep Springs College
 40 1 1
Big Trees Campground
 719 0 0
Bitterbrush Campground
 333 0 0
Ucla White Mountain Research Center
 35 0 0
Bishop Country Club
 167 0 0
Sce Bishop Creek Plant 5
Bishop 		43 0 0
Eastern Sierra Regional Airport
 50 1 1
Olancha Mobil Mart
Bishop 		75 2 0
Ups Bishop (cabis)
Bishop 		35 0 0
Eastern Sierra College Center Bishop
 290 0 0
Mountain View Estates Mwc
 54 0 0
Eastern Sierra Tri County Fair
 104 1 0
Astorgas Water System
 250 0 0
Petite Pantry
 3,012 0 0
Bishop Creek Chevron
Bishop 		16,793 0 0
Ladwp Laws Town
 0 0 0
All non-community systems
About this data

Water systems are matched to Inyo County, the county this ZIP code lies in, nearest to the ZIP code's centre first. Your exact provider depends on your address and connection; the largest community water system in a county is usually the city or town utility. Distances are measured to the centre of the service area EPA publishes for the system or, for systems without one, to the centre of the first town EPA lists the system as serving, from Census Bureau place files.

ZIP code areas and town boundaries come from the U.S. Census Bureau's 2020 ZCTA files.

Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The California records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet. Retrieved from ECHO on Oct 11, 2026.