MyTapWater.us

PWSID CA4900925

SEBASTIANI VINEYARDS

Transient non-community based in Kenwood, CA

Service area on file with EPA: Sonoma County. EPA's recorded service area can be incomplete for regional authorities. The cities and counties above are what the utility has filed with EPA; the utility may serve additional areas.

Population served
65
Source
Groundwater
Status
Active

At a glance

1 issue above the federal safety limit

Past 5 years: 2 health-based violations on file, all marked Resolved or Archived. See compliance history below.

Risk classification follows EPA's published values for safe drinking water, with caution and concern bands reviewed by a clinician. Past resolved violations do not influence this card. See methodology.

Lead service line inventory

No inventory data on file

We do not yet have this utility's published Lead Service Line Inventory on file. The EPA Lead and Copper Rule Improvements (LCRI) required every community water system to publish one by October 16, 2024 and to identify and replace any lead lines within 10 years. How lead enters drinking water.

Phase 1 coverage focuses on the largest NC utilities. Smaller systems will be added; in the meantime, ask your utility for their inventory or check their Consumer Confidence Report.

Lead and copper test results

The most recent measurement per contaminant from EPA's Lead and Copper Rule sampling.

Why only lead and copper, and not arsenic, nitrate, or others?

EPA's bulk SDWIS download is the only nationwide per-system sample data they publish, and it only includes the Lead and Copper Rule table. Values for other regulated contaminants (TTHMs, nitrate, arsenic, etc.) appear on this page only when they trigger a violation. For the full per-system contaminant suite, see the utility's annual Consumer Confidence Report (link further down the page).

Most recent measurements per contaminant (Lead and Copper Rule) . Sorted by risk: concern first, then caution, then unrated, then safe.
Contaminant Most recent Date Risk
Lead
PB90
 0.07 mg/L December 31, 2024 Concern

Data from EPA SDWIS (Lead and Copper Rule sample table) , last refreshed May 24, 2026.

Fluoride

We don't yet have this utility's specific fluoridation status from CDC's My Water's Fluoride listing. The figures below describe the broader area, not SEBASTIANI VINEYARDS itself.

Area context

Sonoma County, CA (2020 data)

Community water systems
4 of 109 add fluoride
Population on fluoridated water
11,838 of 392,112 (3.0%)

California statewide (2020 data)

Population on fluoridated water
21,879,582 of 38,051,212 (57.5%)
Community water systems adding fluoride
417 of 3,057

Look up your specific utility

California shares per-system data on CDC's My Water's Fluoride site. Search by water system to see whether SEBASTIANI VINEYARDS adds fluoride.

CDC My Water's Fluoride: search by water system

Data from CDC Water Fluoridation Reporting System (state and county aggregates) , last refreshed May 16, 2026.

Recorded contaminant measurements (from violations)

When this system exceeded a regulatory limit and EPA recorded the measured value, that value is shown here. These are not routine sample results: they are the values the violation was triggered on.

Measured values from recorded violations . Most recent first.
Period Contaminant Measured Federal MCL Status
April 12, 2022Arsenic0.011MG/L0.01 MG/L Health-based
April 12, 2022Arsenic0.011MG/L0.01 MG/L Health-based

Data from EPA SDWIS (violation records) , last refreshed May 24, 2026.

Compliance history

EPA-recorded violations against this system over the last 5 years.

How to read this section

Health-based violations are when a measured limit was exceeded; the measured concentration is shown alongside the EPA federal limit where SDWIS published it. Monitoring and reporting items are paperwork issues (missed sample dates, late filings) that do not themselves indicate unsafe water.

2 resolved health-based violations in the last 5 years

All 2 health-based violations in the last 5 years are marked Resolved or Archived. Past violations do not represent current water quality.

Health-based violations in the last 5 years
Period start Contaminant What happened Measured level Status
April 12, 2022 Arsenic Maximum Contaminant Level Violation, Average
0.011 MG/L
MCL 0.010 MG/L
Resolved
April 12, 2022 Arsenic Maximum Contaminant Level Violation, Average
0.011 MG/L
MCL 0.010 MG/L
Resolved

Data from EPA SDWIS (violation records) , last refreshed May 24, 2026.

Where to see every contaminant this utility tested for

EPA's bulk SDWIS dataset gives MyTapWater.us per-system measured values for lead and copper, plus violation records for everything else. To see every regulated contaminant this utility tested for in the past year (TTHMs, HAA5, nitrate, arsenic, fluoride, chromium, etc.) with measured values, read the utility's Consumer Confidence Report (CCR).

Every community water system is required by EPA to publish a CCR annually, by July 1, listing every contaminant they sampled, the measured value, the federal limit, and any health-based exceedances. Most utilities post the report online; some mail it with your bill.

How to find SEBASTIANI VINEYARDS's CCR:

Other water systems in Sonoma County, CA

Compare nearby utilities by population served.

Contact this utility

Public administrative contact information for this water system, as filed with the EPA. Use this to ask about your service line, request your home's lead status, or report a water quality issue.

Administrator
SAUER, CHRIS
Phone
209-910-2999
Email
csauer@jfws.com
Mailing address
8555 Sonoma Hwy
KENWOOD, CA 95452

Where this page's data comes from

Bundle released 2026-Q2, regenerated May 24, 2026. Each section above also shows its own source date so you can tell at a glance how fresh that part of the page is.

Every value on this page is cross-verified before publication; read our methodology for the verification steps and corrections process.