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Sierraville P.U.D.

What EPA’s and California’s records show in this utility’s water: nitrate, arsenic and other regulated chemicals; lead and copper; and violations since 2016, with the certification that handles each result.

Serves
200 people
Connections
107
Water source
Groundwater
Based in
Sierraville, CA
County
Sierra
Owner
Local government
Hardness
Moderately hard
The ZIP code it serves

96126

The short answer

Nothing in EPA’s and California’s records for this utility is above a health goal. That covers nitrate, arsenic and other regulated chemicals, plus lead and copper, not everything. No health-based violations on file since 2016.

What was found

None of the contaminants in the records below were found at or above the reporting levels.

7 compounds tested and not foundBelow the reporting level in every sample. Not found is not the same as zero.
  • Arsenic
  • Chromium (total)
  • Fluoride
  • Haloacetic acids (HAA5)
  • Lead
  • Nitrate
  • Total trihalomethanes (TTHM)

Hardness

Moderately hard, 88 mg/L (5.1 grains per gallon), at its one sampling point, in 2019.

Hardness is calcium and magnesium. EPA sets no limit for it: it shows up as scale on fixtures and in water heaters, and as soap that won’t lather. USGS calls water above 60 mg/L moderately hard, above 120 hard and above 180 very hard.

Softeners compared at 5.1 grains per gallon, salt includedSoftener or salt-free conditioner?California water hardness, utility by utility

Violations since 2016

No health-based violations on file with EPA since 2016.

What this report can’t tell you

  • Everything else. Chromium (total), haloacetic acids (HAA5), nitrate and total trihalomethanes (TTHM) results here are California’s own from 2020 on, with EPA’s national file for 2012 to 2019. Arsenic and fluoride come from EPA’s file alone, which ends in 2019. Sierraville P.U.D.’s own annual report, which it must send you every year, has newer results for those and the contaminants this page does not show.

  • Your own plumbing. Lead results are the 90th percentile across homes the utility samples. Your home’s service line, solder and fixtures decide yours. A certified lab test is the only way to know.

  • What it means for your health. This page reports what the records show and EPA’s limits and goals; it is not medical advice. If you are worried about a health effect, talk to a doctor or your local health department.

  • Anything after the latest data. SDWIS data is from 2026 Q3; UCMR 5 didn’t sample this utility; California’s results run from May 12, 2020 to June 15, 2026; EPA’s compliance samples are from Oct. 8, 2019 to Oct. 8, 2019.

Testing your own tap

Sierraville P.U.D.’s results are for the water it sends out. What your own service line, solder and fixtures add shows up only in a test of your tap, by a lab California certifies.

The 3 labs California certifies closest to the area Sierraville P.U.D. serves, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.

  • SGS Silver State Analytical Lab - Reno

    Reno, NV · about 38 miles

    Certified for bacteria, nitrate, lead and copper, metals, minerals and other inorganics, radioactivity

    (775) 857-2400

  • Cranmer Engineering, Inc.

    Grass Valley, CA · about 38 miles

    Certified for bacteria, nitrate, lead and copper, metals, minerals and other inorganics

    (530) 273-7284

  • Onterris Laboratories, LLC

    El Dorado Hills, CA · about 70 miles

    Certified for organic chemicals, PFAS

    (916) 673-1520

All 145 certified labs for California

Sources

PWSID CA4600018. Rebuilt from EPA data on Oct. 18, 2026.

Also in Sierra County

All California utilities

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