Public water system · CA5010038
ActiveModesto Irrigation District
At a glance
Modesto Irrigation District (PWSID CA5010038) is an active community water system in Stanislaus County, California. It reports serving 23 people through 2 service connections. Its primary water source is surface water, and EPA lists it as owned by a local government. EPA's Safe Drinking Water Act records list no violations for this system.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
23
Service connections
2
Primary source
SW
Surface water
System type
CWS
Community water system
System record
How does Modesto Irrigation District compare with other water systems in Stanislaus County?
By EPA's size categories, Modesto Irrigation District is a very small system (500 people or fewer). Stanislaus County has 191 active public water systems. Its population served is well below the county average of 2,684 people per system, and accounts for less than 0.1% of the 512,656 people reported by systems filed under the county. Across California, the 7,479 active systems average 5,706 people each. Nationally, the average active community water system reports serving 6,703 people, so Modesto Irrigation District is well below that figure.
What does “community water system” mean?
A community water system serves at least 15 connections used by year-round residents, or regularly serves at least 25 year-round residents. Homes, apartments and mobile-home parks are served by these. California has 2,997 active community water systems, 40% of the state's 7,479 active systems. Surface water means the system draws its water from rivers, lakes, streams or reservoirs. 609 California systems (8.1%) list surface water as their primary source.
Who owns and regulates Modesto Irrigation District?
EPA lists Modesto Irrigation District as owned by a local government. The CA state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 57 of the 191 active systems in Stanislaus County (30%) are also owned by a local government.
Does Modesto Irrigation District have drinking water violations?
No SDWA violations on record.
EPA's SDWA violation and enforcement data (via EPA ECHO, updated quarterly) lists no violations for Modesto Irrigation District. For the latest compliance status, check EPA ECHO for current compliance history.
Modesto Irrigation District: frequently asked questions
Who runs Modesto Irrigation District?
Modesto Irrigation District (PWSID CA5010038) is a community water system owned by a local government. It is regulated by the CA state drinking water program.
How many people does Modesto Irrigation District serve?
Modesto Irrigation District reports serving 23 people through 2 service connections in Stanislaus County, California.
Where does Modesto Irrigation District get its water?
EPA SDWIS lists this system's primary water source as surface water. Surface water means the system draws its water from rivers, lakes, streams or reservoirs.
Does Modesto Irrigation District have any drinking water violations?
EPA's Safe Drinking Water Act records list no violations for this system.
Is Modesto Irrigation District's water safe to drink?
AquaCensus shows EPA compliance records, not current water test results, so it cannot say whether the water is safe at a given moment. EPA's Safe Drinking Water Act records list no violations for this system. For current results, consult the system's annual water quality report, EPA ECHO, or the CA state drinking water program.
Where can I find Modesto Irrigation District's water quality report?
As a community water system, Modesto Irrigation District must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1 each year, covering the previous calendar year. The system can provide a copy on request.
Other water systems in Stanislaus County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Modesto, City of | Stanislaus | 218,771 | Community | Purchased surface water |
| Turlock, City of | Stanislaus | 72,682 | Community | Purchased surface water |
| Ceres, City of | Stanislaus | 54,513 | Community | Purchased surface water |
| Patterson, City of | Stanislaus | 24,977 | Community | Groundwater |
| Riverbank, City of | Stanislaus | 24,834 | Community | Groundwater |
| Oakdale, City of | Stanislaus | 23,235 | Community | Groundwater |
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About this data
Source: U.S. EPA Safe Drinking Water Information System (SDWIS) and SDWA violation records, via EPA ECHO, as published October 1, 2026 — AquaCensus refreshes it quarterly. See the methodology for how records are matched, cleaned and scored.
Cite as: AquaCensus, “Modesto Irrigation District, PWSID CA5010038, California”, https://aquacensus.com/water-systems/california/modesto-irrigation-district-ca5010038 (data as of October 1, 2026).