Tapcensus

Water quality in Rialto, California

Rialto is in San Bernardino County. 321 active public water systems serve the county; 146 had an EPA violation in the past three years.

Most likely your provider

Rialto, City of CA3610038 · Community water system · Surface water purchased · Rialto
Serves 59,264 people Rules violated, past 3 years 0 Last sanitary survey Aug 22, 2024 Distance under 0.1 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 Bernardino County

146 systems, nearest first
SystemServesStatusRules violated, 3 yrDistance
West Valley Water District
 96,123 0 1.6 mi
Terrace Water Company
 2,400 0 2.9 mi
Marygold Mwc
 3,155 1 3.2 mi
Muscoy Mwc No. 1
 13,000 1 3.6 mi
Gilbert Street Complex
 124 2 4.7 mi
Colton, City of
Colton		 46,525 0 4.8 mi
San Bernardino City
San Bernardin0		 214,665 0 4.9 mi
San Gabriel Valley WC Fontana
 228,270 0 5.1 mi
Riverside Highland Water Company
 19,053 1 7.1 mi
Loma Linda University
 455 0 7.6 mi
Loma Linda, City of
Loma Linda		 25,208 0 8.3 mi
Devore WC
 1,574 0 9.2 mi
Camp Waterman Mwc
 55 1 9.3 mi
Valley View Park Mwc
 499 1 9.8 mi
Valley of Enchantment Mwc
 2,471 1 10.7 mi
East Valley Water District
 108,600 0 10.7 mi
Cucamonga Valley Water District
 213,375 0 10.7 mi
Cedarpines Park Mwc
 2,458 0 10.8 mi
Olive Dell Ranch
 45 3 11.1 mi
Crestline Village Cwd Division 10
 11,650 0 11.1 mi
Strawberry Lodge Mwc
 381 1 11.9 mi
Lytle Springs WC
 475 0 11.9 mi
Lacsd Rimforest
 717 0 12.3 mi
Redlands City Mud-Water Div
Redlands		 78,025 0 12.4 mi
Alpine Water Users Association
 2,534 0 12.8 mi
All 147 community water systems in San Bernardino County
Non-community systems in San Bernardino County (174: schools, campgrounds, workplaces, restaurants)

These systems serve places you visit rather than homes.

SystemServesStatusRules violated, 3 yrUnresolved
Arrowhead Regional Medical Center
 4,500 0 0
Socal Mobile Food Facility
Colton 		25 0 0
Glen Helen Truck Parking Facility
 25 0 0
Hidden Acres
 25 0 0
Bonita Ranch RV Campground
 400 1 0
Best Western Cajon Pass
 34 1 0
Thousand Pines Christian
 28 1 1
Church of Spiritual Technology
 51 1 0
SS Hert Trucking INC
 25 0 0
Mountain Streams RV Park
 16 1 0
Applewhite Campground
 3,177 1 0
Alpine Retreat and Camp
 309 0 0
Silverwood Japanese Restaurant Sushi & G
 25 1 0
Petrolink Hwy 138 INC
 25 0 0
Forest Lawn Scout Reservation
 200 2 0
Pali Overnight Adventures
 54 0 0
Dovid Oved Retreat Center
 100 0 0
Lytle Creek Administration Site
 100 5 3
Calvary Chapel Christian Camp
 34 0 0
MT Baldy Ski Lift
 1,000 0 0
Ponderosa Pines Christian Camp
 202 0 0
Camp Cedar Crest
 310 1 0
Joshua Inn
 25 1 0
Green Valley Campground
 3,029 0 0
Snow Valley Mountain Resort
 35 2 0
Loch Leven Christian Camp & Conference C
 100 1 0
8986 Deep Creek Road
 300 1 0
Parrish Ranch
 25 0 0
The High Adobe
 25 0 0
OG Investments, LLC
 30 0 0
Big Pine Flats Admin & Recreation
 417 0 0
Redlands Colony Pipeline Association
 21 1 1
Los Rios Rancho Water System
 46 1 0
Forest Home Christian CC
 100 2 0
Riley's Log Cabin Farm
 105 1 0
Riley's Farm
 2,400 1 0
Camp Cedar Falls
 405 0 0
Camp Angelus TR Land Assn
 57 0 0
Seven Oaks MT Resort MHP
 321 0 0
Hanna Flats Campground
 4,850 0 0
YMCA Camp Whittle
 30 1 0
DE Benneville Pines
 63 0 0
Burger King #9310
 510 1 0
R W Ranch
 101 0 0
Lone Wolf Colony
 114 0 0
YMCA Camp Arbolado
 231 0 0
Camp la Verne
 28 2 0
Crazzy's Wasewagan Camp
 198 0 0
Big Bear Shores RV Resort
 132 0 0
Snow Summit
 75,500 3 1
All non-community systems
About this data

Water systems are matched to San Bernardino County, nearest to Rialto 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.

Town locations and ZIP code areas come from U.S. Census Bureau 2020 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.