Tapcensus

Water quality for ZIP code 93449

ZIP 93449 covers Pismo Beach and Avila Beach in San Luis Obispo County, California, one of 23 ZIP codes in the county. 172 active public water systems serve the county; 54 had an EPA violation in the past three years.

Most likely your provider

Pismo Beach Water Department CA4010008 · Community water system · Surface water purchased
Serves 7,944 people Rules violated, past 3 years 2 Last sanitary survey Jun 4, 2024 Distance 0.9 mi

Your location is within the outer bounds of this system's EPA service area.

View system details EPA facility report

Other community water systems in San Luis Obispo County

71 systems, nearest first
SystemServesStatusRules violated, 3 yrDistance
Anza Vineyard Estates Mutual Water CO
 60 0 1.3 mi
City of Grover Beach Public Works Dept
 12,701 0 3.4 mi
Avila Valley Mutual Water CO
 75 0 3.7 mi
Baron Canyon Mutual Water Co.
 81 0 3.9 mi
Avila Beach Community Services District
 1,630 0 4.4 mi
San Miguelito Mwc
 1,600 1 4.5 mi
Golden State Water Company Edna
 1,495 0 4.6 mi
Oceano Comm Services Dist.
 7,598 0 4.6 mi
City of Arroyo Grande Utilities Division
 17,963 1 4.6 mi
Lopez Project
 69 1 4.9 mi
Halcyon Water System
 110 3 5.2 mi
Ken Mar Gardens
 84 2 5.2 mi
Terra de Oro Water Company
 38 0 5.3 mi
H2o, INC
 70 1 5.4 mi
Canyon Crest Mutual Benefit WC
 133 0 5.6 mi
Higuera Apartments
 30 3 5.6 mi
Country Hills Estates
 60 0 5.7 mi
Edna Valley Ranch East
 132 0 6.2 mi
Monte Sereno Mutual Benefit Water
 65 0 6.5 mi
Mesa Dunes Mobile Home Estates
 600 0 7.1 mi
Afuera de Chorro Water Company
 85 1 7.1 mi
Golden State Water Company-Cypress Ridge
 2,032 0 7.2 mi
Varian Ranch Mutual Water
 105 0 7.3 mi
San Luis Obispo Water Department
 49,534 0 7.7 mi
Las Ventanas Ranch
 108 0 7.8 mi
All 72 community water systems in San Luis Obispo County
Non-community systems in San Luis Obispo County (100: schools, campgrounds, workplaces, restaurants)

These systems serve places you visit rather than homes.

SystemServesStatusRules violated, 3 yrUnresolved
Coastal Christian School
 650 0 0
Playa Dulce
 35 0 0
Center of Effort Winery
 75 0 0
Sycamore Mineral Springs Resort
 200 1 1
Edna Valley Vineyards
 30 0 0
Strasbaugh, INC
 200 1 0
Noll Properties
 100 0 0
Pacific Dunes Ranch
 26 0 0
Chamisal Vineyards
Cayucos 		40 0 0
Octagon Barn Center Association
 200 0 0
Waste Connections Water CO
 35 1 0
J M Sims Water Supply
 34 0 0
Slo Partners
 40 1 1
Vachell Water System
 150 1 1
Horizon Lane Water Supply
 32 0 0
Tmc Suburban, LLC
 25 0 0
Fiero Lane Water Company, Inc.
 324 0 0
141 Suburban Road Water Supply
 25 1 0
Paragon Triangle Water Supply
 50 0 0
Port San Luis Harbor District
 125 0 0
Holdgrafer & Associates
 30 0 0
Tank Farm Business Park
 45 2 1
Toyota San Luis Obispo
 57 0 0
Parsons Water Supply
 35 0 0
Elks Lodge #322
 40 3 1
Branch Elementary School
 253 0 0
Talley Farms Labor Housing
 90 0 0
Madonna Inn Water Company
 120 3 1
Biddle Regional County Park
 27 0 0
Laetitia Vineyard & Winery INC
 62 0 0
Tiger Water Supply
 1,600 0 0
Greenheart Farms
 91 0 0
Congregation Beth David
 25 0 0
Precision Mutual Water Company
 25 1 0
Zoo Med-Winterhaven
Cayucos 		80 1 0
Ball Tagawa Growers
 60 0 0
Sheridan Road Mutual Water Association
 38 1 1
Speedling, INC
 40 0 0
Lopez Recreation Area
 100 0 0
Jack Ready Imagination Park
Cayucos 		200 0 0
Santa Margarita KOA
 70 0 0
Santa Margarita Recreation Area
 150 0 0
Montana de Oro State Park
 990 1 0
Santa Margarita Ranch Headquarters
Cayucos 		62 0 0
Cuyama Lane Water Company
 25 3 1
Cerro Alto Campground
 30 1 0
Granite Ridge
 50 0 0
Halfway Station
 25 1 0
The Anderson
Cayucos 		500 0 0
Calipaso Winery
Cayucos 		130 0 0
All non-community systems
About this data

Water systems are matched to San Luis Obispo 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.