Tapcensus

Water quality for ZIP code 92374

ZIP 92374 covers Redlands, Mentone, Loma Linda, and San Bernardino in San Bernardino County, California, one of 91 ZIP codes in the county. 321 active public water systems serve the county; 146 had an EPA violation in the past three years.

Most likely your provider

Redlands City Mud-Water Div CA3610037 · Community water system · Surface water · Redlands
Serves 78,025 people Rules violated, past 3 years 0 Last sanitary survey Dec 14, 2023 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 Bernardino County

146 systems, nearest first
SystemServesStatusRules violated, 3 yrDistance
East Valley Water District
 108,600 0 4.2 mi
Rocky Comfort Mutual Water CO
 130 1 4.3 mi
San Bernardino Valley WD
 109,608 0 4.5 mi
Western Heights Water Company
 7,735 0 4.6 mi
Loma Linda, City of
Loma Linda		 25,208 0 4.8 mi
Brookside MHP
 65 7 5.1 mi
Olive Dell Ranch
 45 3 5.2 mi
Loma Linda University
 455 0 5.2 mi
Gilbert Street Complex
 124 2 7.4 mi
Yucaipa Valley Water District
 52,202 3 8.2 mi
Riverside Highland Water Company
 19,053 1 8.5 mi
Colton, City of
Colton		 46,525 0 8.6 mi
San Bernardino City
San Bernardin0		 214,665 0 9.3 mi
Smiley Park Country Club
 370 1 9.4 mi
Terrace Water Company
 2,400 0 9.7 mi
Running Springs Water District
 5,268 1 10.2 mi
Mill Creek Msc
 315 0 10.2 mi
Muscoy Mwc No. 1
 13,000 1 11.3 mi
Arrowbear Park Cwd
 1,396 0 11.5 mi
Lacsd Rimforest
 717 0 11.6 mi
Sky Forest Mwc
 492 2 11.7 mi
Glen Martin Mwc
 450 1 11.9 mi
Arrowhead Villas Mutual Service Company
 2,644 0 12.0 mi
Rialto, City of
Rialto		 59,264 0 12.0 mi
Dogwood Blue Jay Cyn Imp
 232 1 12.3 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
Best Western Cajon Pass
 34 1 0
Socal Mobile Food Facility
Colton 		25 0 0
Dovid Oved Retreat Center
 100 0 0
Arrowhead Regional Medical Center
 4,500 0 0
Loch Leven Christian Camp & Conference C
 100 1 0
Pali Overnight Adventures
 54 0 0
Calvary Chapel Christian Camp
 34 0 0
Ponderosa Pines Christian Camp
 202 0 0
Parrish Ranch
 25 0 0
Camp Cedar Crest
 310 1 0
Church of Spiritual Technology
 51 1 0
Forest Lawn Scout Reservation
 200 2 0
OG Investments, LLC
 30 0 0
Alpine Retreat and Camp
 309 0 0
Snow Valley Mountain Resort
 35 2 0
Los Rios Rancho Water System
 46 1 0
Riley's Log Cabin Farm
 105 1 0
Riley's Farm
 2,400 1 0
Forest Home Christian CC
 100 2 0
Green Valley Campground
 3,029 0 0
Thousand Pines Christian
 28 1 1
Camp Cedar Falls
 405 0 0
Seven Oaks MT Resort MHP
 321 0 0
DE Benneville Pines
 63 0 0
Redlands Colony Pipeline Association
 21 1 1
YMCA Camp Arbolado
 231 0 0
Camp la Verne
 28 2 0
Glen Helen Truck Parking Facility
 25 0 0
Camp Angelus TR Land Assn
 57 0 0
Crazzy's Wasewagan Camp
 198 0 0
YMCA Camp Whittle
 30 1 0
Hanna Flats Campground
 4,850 0 0
Big Pine Flats Admin & Recreation
 417 0 0
Snow Summit
 75,500 3 1
Big Bear Shores RV Resort
 132 0 0
Silverwood Japanese Restaurant Sushi & G
 25 1 0
Joshua Inn
 25 1 0
Hidden Acres
 25 0 0
Holcomb Valley Ranch
 250 2 0
Bonita Ranch RV Campground
 400 1 0
SS Hert Trucking INC
 25 0 0
Mountain Streams RV Park
 16 1 0
Applewhite Campground
 3,177 1 0
Camp Heart Bar Equestrian Group
 1 0 0
Camp Morning Star
 150 0 0
R W Ranch
 101 0 0
8986 Deep Creek Road
 300 1 0
Petrolink Hwy 138 INC
 25 0 0
Specialty Minerals INC
 67 0 0
The High Adobe
 25 0 0
All non-community systems
About this data

Water systems are matched to San Bernardino 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.