VA / Louisa
VA · Tap water records
Louisa tap water, in plain English
Here is what the EPA's own data shows about tap water in Louisa. According to EPA SDWIS data retrieved June 2026, Louisa is served by 6 active community water systems, together reported to serve about 10,589 people.
As of June 2026, EPA records show 89 violations across the community water system(s) serving Louisa, going back to the earliest EPA record. 50 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
Louisa County Water Authority
4,254 served · surface water · PWSID VA2109510 - Health-based TTHM: a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded 9 times between July 2014 and October 2025. The EPA record lists a level of 95 UG/L; the limit (MCL) is 80 UG/L. EPA records do not show all of these as returned to compliance.
- Health-based Total Haloacetic Acids (HAA5): a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded 15 times between July 2014 and October 2025. The EPA record lists a level of 68 UG/L; the limit (MCL) is 60 UG/L. EPA records do not show all of these as returned to compliance.
Louisa County Zion Crossroads
2,903 served · groundwater · PWSID VA2109990 - Health-based Combined Radium (-226 and -228): a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded 2 times in April 2017. The EPA record lists a level of 5.55 PCI/L; the limit (MCL) is 5 PCI/L. All have since returned to compliance, per EPA records.
Blue Ridge Shores
1,707 served · groundwater · PWSID VA2109075 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.
Louisa, Town Of
1,555 served · surface water · PWSID VA2109450 - Health-based Total Haloacetic Acids (HAA5): a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded 16 times between July 2014 and October 2025. The EPA record lists a level of 77 UG/L; the limit (MCL) is 60 UG/L. EPA records do not show all of these as returned to compliance.
- Health-based TTHM: a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded 7 times between October 2015 and July 2017. The EPA record lists a level of 0.094 MG/L; the limit (MCL) is 0.08 MG/L. All have since returned to compliance, per EPA records.
New Bridge
100 served · groundwater · PWSID VA2109340 - 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 2010 and July 2015. All have since returned to compliance, per EPA records.
- Monitoring Public Notice: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 3 times between February 2010 and June 2015. 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 November 2009. All have since returned to compliance, per EPA records.
Twin Oaks Community
70 served · groundwater · PWSID VA2109825 - Health-based Lead and Copper Rule: a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded once in August 2012. The EPA record for these does not include a measured level. 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 28 times between September 2017 and April 2024. 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 3 times between August 2011 and January 2024. 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 in July 2023. All have since returned to compliance, per EPA records.
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.