Water quality for ZIP code 93740
ZIP 93740 covers Fresno in Fresno County, California, one of 55 ZIP codes in the county. 339 active public water systems serve the county; 128 had an EPA violation in the past three years.
Most likely your provider
Other community water systems in Fresno County
101 systems, largest first| System | Serves | Status | Rules violated, 3 yr |
|---|---|---|---|
| City of Clovis Clovis |
133,118 | 0 | |
| City of Sanger Sanger |
26,357 | 1 | |
| Reedley, City of Reedley |
26,076 | 0 | |
| Cws Selma |
25,651 | 0 | |
| Bakman Water Company |
17,393 | 1 | |
| Coalinga-City Coalinga |
17,277 | 0 | |
| Kerman, City of Kerman |
17,256 | 0 | |
| Pinedale County Water District |
16,736 | 1 | |
| City of Parlier Parlier |
14,576 | 1 | |
| Kingsburg, City of Kingsburg |
13,540 | 1 | |
| Mendota, City of Mendota |
12,595 | 0 | |
| City of Orange Cove Orange Cove |
9,525 | 1 | |
| Firebaugh City Firebaugh |
8,424 | 0 | |
| City of Fowler Fowler |
7,448 | 1 | |
| Huron, City of Huron |
7,306 | 1 | |
| San Joaquin, City of San Joaquin |
4,060 | 0 | |
| Nps-Grant Grove |
2,950 | 1 | |
| Fcwwd 41/shaver Lake |
2,859 | 0 | |
| Riverdale Public Utility District |
2,756 | 0 | |
| Caruthers Comm Serv Dist |
2,613 | 0 | |
| Fcsa 47 Quail Lake Estates |
2,010 | 0 | |
| Hume Lake Christian Camps, INC |
1,519 | 1 | |
| California State University Fresno |
1,500 | 0 | |
| Del Rey Community Serv Dist |
1,491 | 0 | |
| Biola Community Services Dist |
1,427 | 0 |
Non-community systems in Fresno County (237: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
About this data
Water systems are matched to Fresno County, the county this ZIP code lies in, largest 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.
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.