CA / Ludlow
CA · Tap water records
Ludlow tap water, in plain English
Here is what the EPA's own data shows about tap water in Ludlow. According to EPA SDWIS data retrieved June 2026, Ludlow is served by 1 active community water system, together reported to serve about 500 people.
As of June 2026, EPA records show 140 violations across the community water system(s) serving Ludlow, going back to the earliest EPA record. 125 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
Knoll Enterprises
500 served · groundwater · PWSID CA3600504 - Health-based Arsenic: a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded 81 times between January 2016 and October 2025. The EPA record lists a level of 0.0283 MG/L; the limit (MCL) is 0.01 MG/L. EPA records do not show all of these as returned to compliance.
- Health-based Combined Uranium: a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded 39 times between January 2016 and October 2025. The EPA record lists a level of 44.93 PCI/L; the limit (MCL) is 20 PCI/L. EPA records do not show all of these as returned to compliance.
- Health-based Manganese: a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded once in January 2025. The EPA record lists a level of 0.18 MG/L; the limit (MCL) is 0.05 MG/L. EPA records do not show all of these as returned to compliance.
- Health-based LEAD AND COPPER RULE REVISIONS: a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded once in October 2024. The EPA record for these does not include a measured level. EPA records do not show all of these as returned to compliance.
- Health-based Gross Alpha Particle Activity: a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded 3 times between January 2016 and July 2016. The EPA record lists a level of 27.22 PCI/L; the limit (MCL) is 15 PCI/L. EPA records do not show all of these as returned to compliance.
- Monitoring Public Notice: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded once in December 2025. 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 5 times between January 2022 and January 2025. EPA records do not show all of these as returned to compliance.
- Monitoring LEAD AND COPPER RULE REVISIONS: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded once in October 2024. EPA records do not show all of these as returned to compliance.
- Monitoring Nitrite: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 5 times between January 2020 and January 2023. EPA records do not show all of these as returned to compliance.
- Monitoring Consumer Confidence Rule: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded once in July 2022. All have since returned to compliance, per EPA records.
- Monitoring Revised Total Coliform Rule: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 2 times in January 2020. 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.