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Cabazon Water District

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
1,900 people
Connections
958
Water source
Groundwater
Based in
Cabazon, CA
County
Riverside
Owner
Local government
Hardness
Varies by source
The ZIP code it serves

92230

The short answer

2 results are above the health goal. The worst: Uranium, above the health goal. No health-based violations on file since 2016.

What handles it

What was found

Lead and copper: EPA SDWIS monitoring periods ending 2002 to 2023.

Uranium, nitrate, fluoride, chromium (total), total trihalomethanes (TTHM), arsenic and haloacetic acids (HAA5): California’s own results, samples taken from May 13, 2020 to June 17, 2026, with EPA’s 2012 to 2019 file for earlier years.

Above the health goal2

Uranium

Comes from the source

Above the health goal

2.8ppb

Highest yearly average, 2024

Averaged by year, the highest was 2.8 ppb, in 2024: below EPA’s legal limit of 30 ppb, but above its health goal of zero. Its highest single sample was 3.4 ppb. That is the only year on file. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 2.8 ppb, in 2012.

What handles it

Lead

Comes from pipes, often your own

Above the health goal

1.2ppb

90th percentile, 2021 to 2023

In the latest period, 9 in 10 homes sampled were at or below 1.2 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 limits4

Nitrate

Comes from the source

Below EPA’s limits

3.6ppm

Highest sample; found in 24 of 24

2026 average: 2.0 ppm

The highest sample, in 2025, was 3.6 ppm, below EPA’s legal limit of 10 ppm. In 2026, the latest year on file, its three samples averaged 2.0 ppm. Earlier, from 2012 to 2019, EPA’s file shows a highest sample of 2.5 ppm, in 2018.

What handles it

  • NSF/ANSI 58 look for “Nitrate/Nitrite Reduction”
  • NSF/ANSI 53 look for “Nitrate/Nitrite (30 ppm challenge)”

Fluoride

Forms or is added in treatment

Below EPA’s limits

0.77ppm

Highest yearly average, 2020 to 2026

2026 average: 0.4 ppm

Averaged by year, the highest was 0.77 ppm, in 2022, below EPA’s legal limit of 4.0 ppm. In 2026, the latest year on file, its two samples averaged 0.4 ppm. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 0.8 ppm, in 2012.

What handles it

Chromium (total)

Comes from the source

Below EPA’s limits

5.3ppb

Highest yearly average, 2020 to 2026

2026: not found

Averaged by year, the highest was 5.3 ppb, in 2025, below EPA’s legal limit of 100 ppb. In 2026, the latest year on file, it wasn’t found in any of its two samples. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 6.3 ppb, in 2015.

What handles it

Total trihalomethanes (TTHM)

Forms or is added in treatment

Below EPA’s limits

3.7ppb

Highest yearly average, 2020 to 2025

2025 average: 1.7 ppb

Averaged by year, the highest was 3.7 ppb, in 2024, below EPA’s legal limit of 80 ppb. Its highest single sample was 11 ppb. In 2025, the latest year on file, its three samples averaged 1.7 ppb. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 3.0 ppb, in 2017.

What handles it

  • NSF/ANSI 53 look for “Trihalomethanes (TTHM) Reduction”
  • NSF/ANSI 58 look for “Trihalomethanes (TTHM) Reduction”
2 compounds tested and not foundBelow the reporting level in every sample. Not found is not the same as zero.
  • Arsenic
  • Haloacetic acids (HAA5)

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.”

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 water filters for lead, ranked

Hardness

Hard to very hard depending on the source, 170 to 195 mg/L (9.9 to 11.4 grains per gallon), across 4 sampling points, 2020 to 2026.

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

No health-based violations on file with EPA since 2016. There are 3 monitoring or reporting violations: a sample missed, late or not reported.

What this report can’t tell you

  • Everything else. Uranium, nitrate, fluoride, chromium (total), total trihalomethanes (TTHM), arsenic and haloacetic acids (HAA5) results here are California’s own from 2020 on, with EPA’s national file for 2012 to 2019. Cabazon Water District’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 May 13, 2020 to June 17, 2026.

Testing your own tap

Cabazon Water District’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 Cabazon Water District serves, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.

  • Babcock Laboratories, Inc.

    Riverside, CA · about 30 miles

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

    (951) 653-3351

  • BSK Associates - San Bernardino Analytical Laboratory

    San Bernardino, CA · about 31 miles

    Certified for bacteria

    (559) 497-2888

  • Clinical Laboratory of San Bernardino, Inc.

    Grand Terrace, CA · about 33 miles

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

    (909) 825-7693

All 145 certified labs for California

Sources

PWSID CA3310047. Rebuilt from EPA data on Oct. 18, 2026.

Towns it serves

Also in Riverside County

All California utilities

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