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Carver Tract Mutual Water Comp

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
600 people
Connections
188
Water source
Groundwater
Based in
Indio, CA
County
Riverside
Owner
Private
Hardness
Moderately hard
The ZIP code it serves

92201

The short answer

1 result is above the health goal. The worst: Uranium, above the health goal. 1 health-based violation since 2016.

What handles it

What was found

Uranium, fluoride, chromium (total), nitrate, arsenic and total trihalomethanes (TTHM): California’s own results, samples taken from Nov. 16, 2020 to Jan. 5, 2026, with EPA’s 2012 to 2019 file for earlier years.

Above the health goal1

Uranium

Comes from the source

Above the health goal

5.4ppb

Highest yearly average, 2021

Averaged by year, the highest was 5.4 ppb, in 2021: below EPA’s legal limit of 30 ppb, but above its health goal of zero. That is the only year on file.

What handles it

Below EPA’s limits3

Fluoride

Forms or is added in treatment

Below EPA’s limits

0.9ppm

Highest yearly average, 2020 to 2023

2023, one sample: 0.76 ppm

Averaged by year, the highest was 0.9 ppm, in 2020, below EPA’s legal limit of 4.0 ppm. In 2023, the latest year on file, its one sample was 0.76 ppm. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 0.9 ppm, in 2014.

What handles it

Chromium (total)

Comes from the source

Below EPA’s limits

13ppb

Highest yearly average, 2020 to 2023

Averaged by year, the highest was 13 ppb, in 2023, below EPA’s legal limit of 100 ppb. That was also the latest year on file. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 13 ppb, in 2017.

What handles it

Nitrate

Comes from the source

Below EPA’s limits

1.1ppm

Highest sample; found in 7 of 9

2026, one sample: 0.98 ppm

The highest sample, in 2022, was 1.1 ppm, below EPA’s legal limit of 10 ppm. In 2026, the latest year on file, its one sample was 0.98 ppm. Earlier, from 2012 to 2019, EPA’s file shows a highest sample of 1.3 ppm, in 2017.

What handles it

  • NSF/ANSI 58 look for “Nitrate/Nitrite Reduction”
  • NSF/ANSI 53 look for “Nitrate/Nitrite (30 ppm challenge)”
3 compounds tested and not foundBelow the reporting level in every sample. Not found is not the same as zero.
  • Arsenic
  • Lead
  • Total trihalomethanes (TTHM)

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?

These come with the water itself, so a whole-house system certified for the same claims treats every tap and shower. A filter at the tap treats drinking water for much less. How whole-house systems compare.

Filters with those claims on a certifier’s listing

None of the filters TapBuff has checked so far carry these claims. Search the certifier listings for the claim above.

Compare five-year costs

Hardness

Moderately hard, 98 mg/L (5.7 grains per gallon), at its one sampling point, 2020 to 2023.

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 5.7 grains per gallon, salt includedSoftener or salt-free conditioner?California water hardness, utility by utility

Violations since 2016

Contaminant or ruleTypePeriodMeasuredStatus
Lead and Copper Rule RevisionsThe required inventory of lead service lines was not completed or submitted on time.EPA: LSL InventoryOct. 17, 2024—Unaddressed
Health-based violations only. Resolved and archived mean the utility returned to compliance or the state closed the record. 7 monitoring or reporting violations not shown.

What this report can’t tell you

  • Everything else. Uranium, fluoride, chromium (total), nitrate, arsenic and total trihalomethanes (TTHM) results here are California’s own from 2020 on, with EPA’s national file for 2012 to 2019. Carver Tract Mutual Water Comp’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 Nov. 16, 2020 to Jan. 5, 2026.

Testing your own tap

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

  • Brawley Analytical, Inc.

    Brawley, CA · about 64 miles

    Certified for bacteria, minerals and other inorganics

    (760) 623-1556

  • Babcock Laboratories, Inc.

    Riverside, CA · about 65 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 66 miles

    Certified for bacteria

    (559) 497-2888

All 145 certified labs for California

Sources

PWSID CA3301107. Rebuilt from EPA data on Oct. 18, 2026.

Towns it serves

Also in Riverside County

All California utilities

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