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Fcwwd 40 - Shaver Springs

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
196 people
Connections
70
Water source
Groundwater
Based in
Fresno, CA
County
Fresno
Owner
Local government
Hardness
Varies by source
The ZIP code it serves

93602

The short answer

1 result is above EPA’s legal limit, 1 more is above the limit’s level with no violation recorded, and 1 more is above the health goal. The worst: Uranium, above the legal limit. 9 health-based violations since 2016.

What handles it

What was found

Lead and copper: EPA SDWIS monitoring periods ending 2001 to 2025.

Uranium, arsenic, total trihalomethanes (TTHM), fluoride, chromium (total) and nitrate: California’s own results, samples taken from March 24, 2020 to June 9, 2026, with EPA’s 2012 to 2019 file for earlier years.

Above the legal limit1

Uranium

Comes from the source

Above the legal limit

98.3ppb

Highest yearly average, 2020 to 2026

Averaged by year, the highest was 98.3 ppb, in 2026, about 3.3 times EPA’s legal limit of 30 ppb. Its highest single sample was 145 ppb. That was also the latest year on file. EPA recorded a violation for uranium at this utility in 2026. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 39.2 ppb, in 2017, and EPA recorded violations in 2015, 2016 and 2017.

What handles it

Above the limit’s level, no violation recorded1

Arsenic

Comes from the source

Above the limit’s level, no violation

32ppb

Highest yearly average, 2020 to 2026

2026, one sample: 4.3 ppb

Averaged by year, the highest was 32 ppb, in 2021, about 3.2 times EPA’s legal limit of 10 ppb. In 2026, the latest year on file, its one sample was 4.3 ppb. EPA judges this limit on running averages at each sampling point, and recorded no violation for arsenic at this utility since 2020. Results like these with no violation often include water sampled before treatment or blending; the utility’s annual report says what reaches the tap. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 7.5 ppb, in 2013, and EPA recorded violations in 2012 and 2013.

What handles it

  • NSF/ANSI 58 look for “Arsenic (Pentavalent)<=50 ppb Reduction”
  • NSF/ANSI 53 look for “Arsenic (Pentavalent)<=50 ppb Reduction”

Above the health goal1

Lead

Comes from pipes, often your own

Above the health goal

1.6ppb

90th percentile, 2023 to 2025

In the latest period, 9 in 10 homes sampled were at or below 1.6 ppb, below EPA’s action level of 15 ppb. The action level drops to 10 ppb on Nov. 1, 2027. EPA’s health goal for lead is zero.

What handles it

Below EPA’s limits3

Total trihalomethanes (TTHM)

Forms or is added in treatment

Below EPA’s limits

14ppb

Highest yearly average, 2020 to 2025

2025: not found

Averaged by year, the highest was 14 ppb, in 2020, below EPA’s legal limit of 80 ppb. Its highest single sample was 28 ppb. In 2025, the latest year on file, it wasn’t found in its one sample.

What handles it

  • NSF/ANSI 53 look for “Trihalomethanes (TTHM) Reduction”
  • NSF/ANSI 58 look for “Trihalomethanes (TTHM) Reduction”

Fluoride

Forms or is added in treatment

Below EPA’s limits

0.49ppm

Highest yearly average, 2021 to 2025

2025, one sample: 0.31 ppm

Averaged by year, the highest was 0.49 ppm, in 2024, below EPA’s legal limit of 4.0 ppm. In 2025, the latest year on file, its one sample was 0.31 ppm. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 0.2 ppm, in 2012.

What handles it

Chromium (total)

Comes from the source

Below EPA’s limits

2.3ppb

Highest yearly average, 2020 to 2025

2025: not found

Averaged by year, the highest was 2.3 ppb, in 2020, below EPA’s legal limit of 100 ppb. Its highest single sample was 3.6 ppb. In 2025, the latest year on file, it wasn’t found in its one sample.

What handles it

One compound tested and not foundBelow the reporting level in every sample. Not found is not the same as zero.
  • Nitrate

What handles it

A certification covers specific claims, not a whole standard. Look for these claims on the certifier’s listing, not the box. Wording varies a little: NSF writes “Lead Reduction,” WQA just “Lead.”

  • NSF/ANSI 53

    Claims: Arsenic (Pentavalent)<=50 ppb Reduction, Lead Reduction

    For: Arsenic, Lead

    Other certifiers’ wording: Arsenic (III) (50 ppb influent level)

  • NSF/ANSI 58

    Claims: Uranium, Arsenic (Pentavalent)<=50 ppb Reduction, Lead Reduction

    For: Uranium, Arsenic, Lead

    Other certifiers’ wording: Arsenic (Pentavalent)<=300 ppb Reduction; Arsenic (V) (300 ppb influent level)

At the tap, or for the whole house?

Lead and copper usually come from pipes and fixtures inside or near your home. A whole-house system sits where water enters, so it cannot catch what your own plumbing adds after it. For those, the filter that counts is the one at the tap. How whole-house systems compare.

Filters with those claims on a certifier’s listing

Disclosure: TapBuff earns a commission if you buy through some links on this page. It does not change which standard or filter we name. As an Amazon Associate, TapBuff earns from qualifying purchases. How TapBuff makes money

Compare five-year costs

The best reverse osmosis systems, ranked

The best water filters for lead, ranked

Hardness

Moderately hard to hard depending on the source, 110 to 130 mg/L (6.4 to 7.6 grains per gallon), across 3 sampling points, 2019 to 2024.

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, salt includedSoftener or salt-free conditioner?California water hardness, utility by utility

Violations since 2016

Contaminant or ruleTypePeriodMeasuredStatus
Combined UraniumThe running average was above the legal limit.EPA: Maximum Contaminant Level Violation, AverageApril 1, 2026 to June 30, 202696.4 PCI/LArchived
Combined UraniumThe running average was above the legal limit.EPA: Maximum Contaminant Level Violation, AverageOct. 1, 2017 to Dec. 31, 201742.1 PCI/LResolved
Combined UraniumThe running average was above the legal limit.EPA: Maximum Contaminant Level Violation, AverageJuly 1, 2017 to Sept. 30, 201741.9 PCI/LResolved
Combined UraniumThe running average was above the legal limit.EPA: Maximum Contaminant Level Violation, AverageApril 1, 2017 to June 30, 201735.5 PCI/LResolved
Combined UraniumThe running average was above the legal limit.EPA: Maximum Contaminant Level Violation, AverageJan. 1, 2017 to March 31, 201730.8 PCI/LResolved
Combined UraniumThe running average was above the legal limit.EPA: Maximum Contaminant Level Violation, AverageOct. 1, 2016 to Dec. 31, 201628.5 PCI/LResolved
Combined UraniumThe running average was above the legal limit.EPA: Maximum Contaminant Level Violation, AverageJuly 1, 2016 to Sept. 30, 201630.3 PCI/LResolved
Combined UraniumThe running average was above the legal limit.EPA: Maximum Contaminant Level Violation, AverageApril 1, 2016 to June 30, 201628 PCI/LResolved
Combined UraniumThe running average was above the legal limit.EPA: Maximum Contaminant Level Violation, AverageJan. 1, 2016 to March 31, 201625 PCI/LResolved
Health-based violations only. Resolved and archived mean the utility returned to compliance or the state closed the record.

What this report can’t tell you

  • Everything else. Uranium, arsenic, total trihalomethanes (TTHM), fluoride, chromium (total) and nitrate results here are California’s own from 2020 on, with EPA’s national file for 2012 to 2019. Fcwwd 40 - Shaver Springs’s own annual report, which it must send you every year, has 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 March 24, 2020 to June 9, 2026.

Testing your own tap

Fcwwd 40 - Shaver Springs’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 Fcwwd 40 - Shaver Springs serves, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.

  • SGS North America, Inc.

    Clovis, CA · about 23 miles

    Certified for nitrate, lead and copper, metals, minerals and other inorganics, organic chemicals, disinfection byproducts, PFAS

    (559) 862-2118

  • BSK Associates

    Fresno, CA · about 28 miles

    Certified for bacteria, nitrate, lead and copper, metals, minerals and other inorganics, organic chemicals, disinfection byproducts, PFAS, radioactivity

    (559) 497-2888

  • Moore Twining Associates, Inc.

    Fresno, CA · about 33 miles

    Certified for bacteria, nitrate, lead and copper, metals, minerals and other inorganics, organic chemicals, disinfection byproducts, radioactivity

    (559) 268-7021

All 145 certified labs for California

Sources

PWSID CA1000042. Rebuilt from EPA data on Oct. 18, 2026.

Towns it serves

Also in Fresno County

All California utilities

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