Does South Lake Tahoe, CA tap water have any EPA-reported violations?

As of June 2026, EPA SDWIS records show 88 violation(s) across the community water systems serving South Lake Tahoe, of which 7 are classified by the EPA as health-based. Most older violations have returned to compliance; see the per-system list.

Where does South Lake Tahoe, CA tap water come from?

South Lake Tahoe is served by 5 active community water system(s). Their primary sources, per EPA records, are: groundwater, surface water.

South Lake Tahoe, CA Tap Water Quality — EPA Data

Here is what the EPA's own data shows about tap water in South Lake Tahoe. According to EPA SDWIS data retrieved June 2026, South Lake Tahoe is served by 5 active community water systems, together reported to serve about 107,415 people.

As of June 2026, EPA records show 88 violations across the community water system(s) serving South Lake Tahoe, going back to the earliest EPA record. 7 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

South Tahoe Pud - Main

100,000 served · groundwater · PWSID CA0910002

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.

Lukins Brothers Water Company

3,277 served · groundwater · PWSID CA0910007

Health-based Coliform (TCR): a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded 4 times in December 2001. The EPA record for these does not include a measured level. All have since returned to compliance, per EPA records.

Lakeside Park Association

2,648 served · surface water · PWSID CA0910019

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 July 2025. EPA records do not show all of these as returned to compliance.
Monitoring Aluminum: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 4 times between August 2024 and September 2024. All have since returned to compliance, per EPA records.
Monitoring Arsenic: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 2 times in September 2024. All have since returned to compliance, per EPA records.
Monitoring Barium: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 2 times in September 2024. All have since returned to compliance, per EPA records.
Monitoring Cadmium: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 2 times in September 2024. All have since returned to compliance, per EPA records.
Monitoring Chromium: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 2 times in September 2024. All have since returned to compliance, per EPA records.
Monitoring Fluoride: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 2 times in September 2024. All have since returned to compliance, per EPA records.
Monitoring Mercury: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 2 times in September 2024. All have since returned to compliance, per EPA records.
Monitoring Nickel: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 2 times in September 2024. All have since returned to compliance, per EPA records.
Monitoring Nitrite: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 2 times in September 2024. All have since returned to compliance, per EPA records.
Monitoring Antimony, Total: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 2 times in September 2024. All have since returned to compliance, per EPA records.
Monitoring Beryllium, Total: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 2 times in September 2024. All have since returned to compliance, per EPA records.
Monitoring Thallium, Total: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 2 times in September 2024. All have since returned to compliance, per EPA records.
Monitoring Selenium: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 2 times in September 2024. All have since returned to compliance, per EPA records.
Monitoring Perchlorate: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 2 times in September 2024. All have since returned to compliance, per EPA records.
Monitoring Turbidity: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 2 times in August 2024. All have since returned to compliance, per EPA records.
Monitoring Calcium: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 2 times in August 2024. All have since returned to compliance, per EPA records.
Monitoring Chloride: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 2 times in August 2024. All have since returned to compliance, per EPA records.
Monitoring Hydroxide as Calcium Carbonate: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 2 times in August 2024. All have since returned to compliance, per EPA records.
Monitoring COPPER, FREE: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 2 times in August 2024. All have since returned to compliance, per EPA records.
Monitoring Iron: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 2 times in August 2024. All have since returned to compliance, per EPA records.
Monitoring Magnesium: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 2 times in August 2024. All have since returned to compliance, per EPA records.
Monitoring Manganese: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 2 times in August 2024. All have since returned to compliance, per EPA records.
Monitoring Silver: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 2 times in August 2024. All have since returned to compliance, per EPA records.
Monitoring Sodium: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 2 times in August 2024. All have since returned to compliance, per EPA records.
Monitoring Sulfate: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 2 times in August 2024. All have since returned to compliance, per EPA records.
Monitoring CONDUCTIVITY @ 25 C UMHOS/CM: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 2 times in August 2024. All have since returned to compliance, per EPA records.
Monitoring Zinc: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 2 times in August 2024. All have since returned to compliance, per EPA records.
Monitoring Color: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 2 times in August 2024. All have since returned to compliance, per EPA records.
Monitoring Hardness, Total (as CaC03): a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 2 times in August 2024. All have since returned to compliance, per EPA records.
Monitoring Odor: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 2 times in August 2024. All have since returned to compliance, per EPA records.
Monitoring pH: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 2 times in August 2024. All have since returned to compliance, per EPA records.
Monitoring Alkalinity, Bicarbonate: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 2 times in August 2024. All have since returned to compliance, per EPA records.
Monitoring Alkalinity, Carbonate: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 2 times in August 2024. All have since returned to compliance, per EPA records.
Monitoring TDS: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 2 times in August 2024. All have since returned to compliance, per EPA records.
Monitoring METHYL TERT-BUTYL ETHER: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 2 times in August 2024. All have since returned to compliance, per EPA records.
Monitoring THIOBENCARB (BOLERO): a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 2 times in August 2024. All have since returned to compliance, per EPA records.
Monitoring Foaming Agents (Surfactants): a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 2 times in August 2024. 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 in October 2023. All have since returned to compliance, per EPA records.

Tahoe Keys Water Company

1,420 served · groundwater · PWSID CA0910015

Health-based Combined Uranium: a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded once in October 2020. The EPA record lists a level of 114 PCI/L; the limit (MCL) is 20 PCI/L. All have since returned to compliance, per EPA records.
Health-based Coliform (TCR): a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded once in September 2006. The EPA record for these does not include a measured level. All have since returned to compliance, per EPA records.

Sierra Pines Mobile Home Park

70 served · groundwater · PWSID CA0202522

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.
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.

Source: U.S. EPA Envirofacts SDWIS, retrieved June 2026. Records cover the EPA's full reporting history for these systems. Verify at EPA ECHO.

South Lake Tahoe tap water, in plain English