Public water system · CA4300791
ActiveWestern Digital Technologies, Inc..
At a glance
Western Digital Technologies, Inc.. (PWSID CA4300791) is an active non-transient non-community water system in Santa Clara County, California. It reports serving 2,439 people through 6 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 8 violations for this system; 6 are health-based, and the most recent began in July 2019.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
2,439
Service connections
6
Primary source
GW
Groundwater
System type
NTNCWS
Non-transient non-community water system
System record
How does Western Digital Technologies, Inc.. compare with other water systems in Santa Clara County?
By EPA's size categories, Western Digital Technologies, Inc.. is a small system (501 to 3,300 people). Santa Clara County has 121 active public water systems. Its population served is well below the county average of 17,334 people per system, and accounts for 0.1% of the 2,097,447 people reported by systems filed under the county. Across California, the 7,479 active systems average 5,706 people each. Nationally, the average active non-transient non-community water system reports serving 430 people, so Western Digital Technologies, Inc.. is about 5.7 times that figure.
What does “non-transient non-community water system” mean?
A non-transient non-community water system regularly serves at least 25 of the same people for more than six months a year, but not where they live. Schools, factories, office buildings and hospitals with their own supply are typical examples. California has 1,466 active non-transient non-community water systems, 20% 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 Western Digital Technologies, Inc..?
EPA lists Western Digital Technologies, Inc.. 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. 82 of the 121 active systems in Santa Clara County (68%) are also privately owned.
Does Western Digital Technologies, Inc.. have drinking water violations?
EPA's records list 8 violations for this system; 6 are health-based, and the most recent began in July 2019. The violations listed here began between August 1984 and July 2019. By type: 5 contaminant level above the legal limit, 1 required treatment not met, 1 monitoring and reporting and 1 public notice, recordkeeping or other. The contaminant or rule involved most often is Total coliform bacteria (TCR) (4 of them). EPA lists 7 as resolved and 1 as archived. 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. 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 |
|---|---|---|---|---|
| 2019-07-01 | Required treatment not metTreatment Technique, Level 1 Assessment (RTCR) · code 2A | Revised Total Coliform Rulecode 8000 | Yes | Resolved |
| 2008-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2008-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2007-11-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2001-03-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Single Sample · code 01 | Cadmiumcode 1015 | Yes | Resolved |
| 1996-11-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1993-06-30 | Monitoring and reportingInitial Tap Sampling for Pb and Cu · code 51 | Lead and Copper Rulecode 5000 | No | Resolved |
| 1984-08-01 | Public notice, recordkeeping or otherNotification, Public · code 06 | Not reported | No | Archived |
All 8 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.
Western Digital Technologies, Inc..: frequently asked questions
Who runs Western Digital Technologies, Inc..?
Western Digital Technologies, Inc.. (PWSID CA4300791) is a non-transient non-community water system privately owned. It is regulated by the CA state drinking water program.
How many people does Western Digital Technologies, Inc.. serve?
Western Digital Technologies, Inc.. reports serving 2,439 people through 6 service connections in Santa Clara County, California.
Where does Western Digital Technologies, Inc.. 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 Western Digital Technologies, Inc.. have any drinking water violations?
EPA's records list 8 violations for this system; 6 are health-based, and the most recent began in July 2019. 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 Western Digital Technologies, Inc..'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 records list 8 violations for this system; 6 are health-based, and the most recent began in July 2019. For current results, consult EPA ECHO, or the CA state drinking water program.
Where can I find Western Digital Technologies, Inc..'s water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Western Digital Technologies, Inc.. is a non-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 Santa Clara County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| San Jose Water | Santa Clara | 1,039,920 | Community | Surface water |
| City of Sunnyvale | Santa Clara | 157,566 | Community | Purchased surface water |
| City of Santa Clara | Santa Clara | 130,746 | Community | Purchased surface water |
| Great Oaks Wc Inc. | Santa Clara | 110,088 | Community | Groundwater |
| City of San Jose - Evg/Edv/Coy | Santa Clara | 101,265 | Community | Purchased surface water |
| City of Milpitas | Santa Clara | 81,773 | 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, “Western Digital Technologies, Inc.., PWSID CA4300791, California”, https://aquacensus.com/water-systems/california/western-digital-technologies-inc-ca4300791 (data as of October 1, 2026).