Public water system · CA0405002
ActiveDwr-Monument Hill Restrooms
At a glance
Dwr-Monument Hill Restrooms (PWSID CA0405002) is an active transient non-community water system in Butte County, California. It reports serving 593 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as owned by a state government. EPA's records list one violation for this system; it is not health-based, and the most recent began in July 2017.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
593
Service connections
1
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Dwr-Monument Hill Restrooms compare with other water systems in Butte County?
By EPA's size categories, Dwr-Monument Hill Restrooms is a small system (501 to 3,300 people). Butte County has 86 active public water systems. Its population served is well below the county average of 2,697 people per system, and accounts for 0.3% of the 231,911 people reported by systems filed under the county. Across California, the 7,479 active systems average 5,706 people each. Nationally, the average active transient non-community water system reports serving 144 people, so Dwr-Monument Hill Restrooms is about 4.1 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. California has 3,016 active transient non-community water systems, 40% of the state's 7,479 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 6,179 California systems (83%) list groundwater as their primary source.
Who owns and regulates Dwr-Monument Hill Restrooms?
EPA lists Dwr-Monument Hill Restrooms as owned by a state 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. 4 of the 86 active systems in Butte County (4.7%) are also owned by a state government.
Does Dwr-Monument Hill Restrooms have drinking water violations?
EPA's records list one violation for this system; it is not health-based, and the most recent began in July 2017. By type: 1 monitoring. The contaminant or rule involved is Revised Total Coliform Rule. EPA lists 1 as resolved. Resolved means at least one resolving action is on record: the system returned to compliance, the rule no longer applies, or no further action was needed.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2017-07-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
The one violation in EPA's records.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.
Dwr-Monument Hill Restrooms: frequently asked questions
Who runs Dwr-Monument Hill Restrooms?
Dwr-Monument Hill Restrooms (PWSID CA0405002) is a transient non-community water system owned by a state government. It is regulated by the CA state drinking water program.
How many people does Dwr-Monument Hill Restrooms serve?
Dwr-Monument Hill Restrooms reports serving 593 people through 1 service connection in Butte County, California.
Where does Dwr-Monument Hill Restrooms 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 Dwr-Monument Hill Restrooms have any drinking water violations?
EPA's records list one violation for this system; it is not health-based, and the most recent began in July 2017. 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 Dwr-Monument Hill Restrooms' 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 records list one violation for this system; it is not health-based, and the most recent began in July 2017. For current results, consult EPA ECHO, or the CA state drinking water program.
Where can I find Dwr-Monument Hill Restrooms' water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Dwr-Monument Hill Restrooms 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 Butte County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Cal-Water Service Co.-Chico | Butte | 114,925 | Community | Groundwater |
| South Feather W&P - Miners Ranch | Butte | 22,664 | Community | Surface water |
| Butte-Glenn Community College Dist | Butte | 18,000 | Non-transient non-community | Groundwater |
| Thermalito Water & Sewer Dist | Butte | 12,136 | Community | Surface water |
| Cal-Water Service Co.-Oroville | Butte | 11,106 | Community | Surface water |
| Del Oro Water Co.-Paradise Pines | Butte | 10,940 | Community | Purchased surface water |
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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, “Dwr-Monument Hill Restrooms, PWSID CA0405002, California”, https://aquacensus.com/water-systems/california/dwr-monument-hill-restrooms-ca0405002 (data as of October 1, 2026).