CA / Lompoc
CA · Tap water records
Lompoc tap water, in plain English
Here is what the EPA's own data shows about tap water in Lompoc. According to EPA SDWIS data retrieved June 2026, Lompoc is served by 5 active community water systems, together reported to serve about 51,515 people.
As of June 2026, EPA records show 35 violations across the community water system(s) serving Lompoc, going back to the earliest EPA record. 22 of these are classified by the EPA as health-based (a contaminant recorded above the limit the EPA tracks); the rest are monitoring or reporting violations. Each is listed by system below, with its status.
What the EPA has on record, by system
Lompoc-City Water Utility Div
40,473 served · surface water · PWSID CA4210006 As of June 2026, EPA records show no reported violations for this system in the period covered. This is not a guarantee about every substance, or about the water inside your home's plumbing.
Vandenberg Village Comm. Serv. Dist.
7,308 served · groundwater · PWSID CA4210017 - Monitoring E. COLI: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded once in October 2016. All have since returned to compliance, per EPA records.
Mission Hills Csd
3,600 served · groundwater · PWSID CA4210019 - Monitoring Revised Total Coliform Rule: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded once in April 2017. All have since returned to compliance, per EPA records.
Vista Hills Mutual Water Company
75 served · groundwater · PWSID CA4200848 - Health-based Selenium: a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded 3 times in January 2025. The EPA record lists a level of 67.5 UG/L; the limit (MCL) is 50 UG/L. EPA records do not show all of these as returned to compliance.
- Monitoring Lead and Copper Rule: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 4 times between October 2017 and October 2023. EPA records do not show all of these as returned to compliance.
- Monitoring Nitrate: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded once in January 2018. All have since returned to compliance, per EPA records.
- Monitoring Consumer Confidence Rule: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 3 times between July 2002 and July 2007. All have since returned to compliance, per EPA records.
Santa Rita Water
59 served · groundwater · PWSID CA4200822 - Health-based Arsenic: a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded 18 times between January 2021 and November 2022. The EPA record lists a level of 14.2 UG/L; the limit (MCL) is 10 UG/L. EPA records do not show all of these as returned to compliance.
- Health-based Coliform (TCR): a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded once in September 2015. The EPA record for these does not include a measured level. All have since returned to compliance, per EPA records.
- Monitoring Lead and Copper Rule: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 3 times between October 2017 and October 2024. EPA records do not show all of these as returned to compliance.
What this means
A health-based violation means a contaminant was recorded above the limit the EPA tracks for it. A monitoring or reporting violation means a required test or report was late or missed — not that a contaminant was measured above a limit. “Returned to compliance” means the EPA recorded the issue as resolved.
This page summarizes the EPA's own records and does not assess whether your water is safe to drink. For the most current details, you can verify every record directly with the EPA, and contact your water system with questions.
Source: U.S. EPA Envirofacts SDWIS, retrieved June 2026. Records cover the EPA's full reporting history for these systems. Verify at EPA ECHO.