Public water system · CA2900585
ActiveMartis Creek-Us Army Corps of Engineers
At a glance
Martis Creek-Us Army Corps of Engineers (PWSID CA2900585) is an active transient non-community water system in Nevada County, California. It reports serving 322 people through 3 service connections. Its primary water source is groundwater, and EPA lists it as owned by the federal government. EPA's records list one violation for this system; it is not health-based, and the most recent began in September 2011.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
322
Service connections
3
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Martis Creek-Us Army Corps of Engineers compare with other water systems in Nevada County?
By EPA's size categories, Martis Creek-Us Army Corps of Engineers is a very small system (500 people or fewer). Nevada County has 82 active public water systems. Its population served is well below the county average of 1,263 people per system, and accounts for 0.3% of the 103,540 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 Martis Creek-Us Army Corps of Engineers is about 124% above 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 Martis Creek-Us Army Corps of Engineers?
EPA lists Martis Creek-Us Army Corps of Engineers as owned by the federal 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. 10 of the 82 active systems in Nevada County (12%) are also owned by the federal government.
Does Martis Creek-Us Army Corps of Engineers have drinking water violations?
EPA's records list one violation for this system; it is not health-based, and the most recent began in September 2011. By type: 1 monitoring and reporting. The contaminant or rule involved is Total coliform bacteria (TCR). 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 |
|---|---|---|---|---|
| 2011-09-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | 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.
Martis Creek-Us Army Corps of Engineers: frequently asked questions
Who runs Martis Creek-Us Army Corps of Engineers?
Martis Creek-Us Army Corps of Engineers (PWSID CA2900585) is a transient non-community water system owned by the federal government. It is regulated by the CA state drinking water program.
How many people does Martis Creek-Us Army Corps of Engineers serve?
Martis Creek-Us Army Corps of Engineers reports serving 322 people through 3 service connections in Nevada County, California.
Where does Martis Creek-Us Army Corps of Engineers 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 Martis Creek-Us Army Corps of Engineers 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 September 2011. 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 Martis Creek-Us Army Corps of Engineers' 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 September 2011. For current results, consult EPA ECHO, or the CA state drinking water program.
Where can I find Martis Creek-Us Army Corps of Engineers' water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Martis Creek-Us Army Corps of Engineers 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 Nevada County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Truckee-Donner PUD, Main | Nevada | 36,730 | Community | Groundwater |
| Nevada Id - E. George, Banner Mountain | Nevada | 17,154 | Community | Surface water |
| Nevada Id - Loma Rica | Nevada | 14,072 | Community | Surface water |
| Nevada Id - Lake Wildwood | Nevada | 9,108 | Community | Surface water |
| Nevada Id - Lake of Pines | Nevada | 6,870 | Community | Surface water |
| City of Grass Valley | Nevada | 4,947 | Community | 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, “Martis Creek-Us Army Corps of Engineers, PWSID CA2900585, California”, https://aquacensus.com/water-systems/california/martis-creek-us-army-corps-of-engineers-ca2900585 (data as of October 1, 2026).