Public water system · CA3600367
ActiveRio Del Colorado
At a glance
Rio Del Colorado (PWSID CA3600367) is an active transient non-community water system in San Bernardino County, Arizona. It reports serving 515 people through 180 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in September 1984.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
515
Service connections
180
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Rio Del Colorado compare with other water systems in San Bernardino County?
By EPA's size categories, Rio Del Colorado is a small system (501 to 3,300 people). San Bernardino County has 6 active public water systems, and Rio Del Colorado is the 4th-largest of them by population served. Its population served is about 17% below the county average of 618 people per system, and accounts for 14% of the 3,707 people reported by systems filed under the county. Across Arizona, the 1,769 active systems average 4,369 people each. Nationally, the average active transient non-community water system reports serving 144 people, so Rio Del Colorado is about 3.6 times that figure.
What does “transient non-community water system” mean?
A transient non-community water system serves places where people do not stay long, such as gas stations and campgrounds, and regularly serves at least 25 people a day for at least 60 days a year. Arizona has 601 active transient non-community water systems, 34% of the state's 1,769 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 1,612 Arizona systems (91%) list groundwater as their primary source.
Who owns and regulates Rio Del Colorado?
EPA lists Rio Del Colorado as privately owned. 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. 6 of the 6 active systems in San Bernardino County (100%) are also privately owned.
Does Rio Del Colorado have drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in September 1984. The violations listed here began between October 1983 and September 1984. By type: 12 public notice, recordkeeping or other. EPA lists 12 as archived. Archived means the violation was not marked resolved but is more than five years past the end of the noncompliance period, so it no longer counts toward current compliance status.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 1984-09-01 | Public notice, recordkeeping or otherNotification, Public · code 06 | Not reported | No | Archived |
| 1984-08-01 | Public notice, recordkeeping or otherNotification, Public · code 06 | Not reported | No | Archived |
| 1984-07-01 | Public notice, recordkeeping or otherNotification, Public · code 06 | Not reported | No | Archived |
| 1984-06-01 | Public notice, recordkeeping or otherNotification, Public · code 06 | Not reported | No | Archived |
| 1984-05-01 | Public notice, recordkeeping or otherNotification, Public · code 06 | Not reported | No | Archived |
| 1984-04-01 | Public notice, recordkeeping or otherNotification, Public · code 06 | Not reported | No | Archived |
| 1984-03-01 | Public notice, recordkeeping or otherNotification, Public · code 06 | Not reported | No | Archived |
| 1984-02-01 | Public notice, recordkeeping or otherNotification, Public · code 06 | Not reported | No | Archived |
| 1984-01-01 | Public notice, recordkeeping or otherNotification, Public · code 06 | Not reported | No | Archived |
| 1983-12-01 | Public notice, recordkeeping or otherNotification, Public · code 06 | Not reported | No | Archived |
| 1983-11-01 | Public notice, recordkeeping or otherNotification, Public · code 06 | Not reported | No | Archived |
| 1983-10-01 | Public notice, recordkeeping or otherNotification, Public · code 06 | Not reported | No | Archived |
The 12 most recent violations in EPA's records, newest first.Labels and codes come from EPA's SDWIS reference tables. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found. "Health-based" marks violations of a legal limit or required treatment.
Rio Del Colorado: frequently asked questions
Who runs Rio Del Colorado?
Rio Del Colorado (PWSID CA3600367) is a transient non-community water system privately owned. It is regulated by the CA state drinking water program.
How many people does Rio Del Colorado serve?
Rio Del Colorado reports serving 515 people through 180 service connections in San Bernardino County, Arizona.
Where does Rio Del Colorado get its water?
EPA SDWIS lists this system's primary water source as groundwater. Groundwater means the system draws its water from wells or springs fed by underground aquifers.
Does Rio Del Colorado have any drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in September 1984. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found.
Is Rio Del Colorado'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. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in September 1984. For current results, consult EPA ECHO, or the CA state drinking water program.
Where can I find Rio Del Colorado's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Rio Del Colorado is a transient non-community water system, so it is not required to publish one; like every public water system, it must notify the people it serves about violations under EPA's public notification rules.
Other water systems in San Bernardino County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Emerald Cove Resort | San Bernardino | 1,000 | Transient non-community | Groundwater |
| Big Bend Resort | San Bernardino | 655 | Transient non-community | Surface water |
| Windmill Resort | San Bernardino | 530 | Transient non-community | Surface water |
| Hi Sahara Oasis | San Bernardino | 507 | Transient non-community | Groundwater |
| Echo Lodge Resort | San Bernardino | 500 | Transient non-community | Groundwater |
Related pages
Working with water-system records? Pro adds alerts, change history and CSV export ($49/mo); Enterprise adds full national files, the API and an MCP server for AI tools.
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, “Rio Del Colorado, PWSID CA3600367, Arizona”, https://aquacensus.com/water-systems/arizona/rio-del-colorado-ca3600367 (data as of October 1, 2026).