Psmcsd - Pajaro
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.
CA / Royal Oaks
CA · Tap water records
Royal Oaks tap water, in plain English
Here is what the EPA's own data shows about tap water in Royal Oaks. According to EPA SDWIS data retrieved June 2026, Royal Oaks is served by 18 active community water systems, together reported to serve about 10,349 people.
As of June 2026, EPA records show 144 violations across the community water system(s) serving Royal Oaks, going back to the earliest EPA record. 123 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.
- 18Community water systems
- ~10,349People served (EPA-reported)
- June 2026EPA records reviewed through
What the EPA has on record, by system
Psmcsd - Normco
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.
Psmcsd - Sunny Mesa
- Monitoring E. COLI: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded once in March 2013. 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 2 times between July 2003 and July 2004. All have since returned to compliance, per EPA records.
Psmcsd - Moss Landing Harbor Ws
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.
Psmcsd - Vega Rd Ws #01
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.
Psmcsd - Springfield Ws
- Health-based Nitrate: a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded 48 times between January 2016 and October 2024. The EPA record lists a level of 64 MG/L; the limit (MCL) is 10 MG/L. EPA records do not show all of these as returned to compliance.
- Health-based 1,2,3-Trichloropropane: a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded 8 times between January 2018 and October 2019. The EPA record lists a level of 0.00001 MG/L; the limit (MCL) is 0.000005 MG/L. EPA records do not show all of these as returned to compliance.
- Monitoring Coliform (TCR): a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded once in October 2002. All have since returned to compliance, per EPA records.
Psmcsd - Vierra Estates Ws
- Health-based Arsenic: a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded 6 times between April 2024 and October 2024. The EPA record lists a level of 0.013 MG/L; the limit (MCL) is 0.01 MG/L. EPA records do not show all of these as returned to compliance.
San Miguel Ws #01
- Health-based Revised Total Coliform Rule: a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded once in November 2025. 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 Nitrate: a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded 58 times between November 2005 and January 2020. The EPA record lists a level of 48 MG/L; the limit (MCL) is 45 MG/L. 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 once in October 2021. 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 2010. All have since returned to compliance, per EPA records.
- Monitoring Nitrate: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 8 times between April 2003 and March 2009. All have since returned to compliance, per EPA records.
Psmcsd - Langley/Valle Pacifico Ws
- Monitoring Stage 1 Disinfectants and Disinfection Byproducts Rule: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded once in January 2008. All have since returned to compliance, per EPA records.
Strawberry Rd Ws #06
- Health-based Coliform (TCR): a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded 2 times between November 2014 and March 2016. The EPA record for these does not include a measured level. All have since returned to compliance, per EPA records.
Manzanita Hills Wa
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.
Psmcsd - Blackie Rd Ws
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.
Delany Wc
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.
Royal Oak Place Ws
- Monitoring Lead and Copper Rule: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded once in October 2019. EPA records do not show all of these as returned to compliance.
Chetmoore Acres Wa
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.
Apricot Ln Ws
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.
Maher Rd Ws #05
- 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 January 2018 and January 2020. EPA records do not show all of these as returned to compliance.
San Miguel Ws #03
- Monitoring Lead and Copper Rule: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded once in October 2017. 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.