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Del Oro Water Co. - Lime Saddle Marina

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
954 people
Connections
289
Water source
Surface water
Based in
Chico, CA
County
Butte
Owner
Private
Hardness
Varies by source
The ZIP code it serves

95965

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

Copper: EPA’s file records a utility’s copper only when it exceeds the action level. The last here was 1.7 ppm, for the period ending Dec. 31, 2001. None since is on file, so it is not counted as a current finding.

Haloacetic acids (HAA5), total trihalomethanes (TTHM), nitrate, arsenic, chromium (total) and fluoride: California’s own results, samples taken from Feb. 4, 2020 to June 19, 2026, with EPA’s 2012 to 2019 file for earlier years.

Below EPA’s limits3

Haloacetic acids (HAA5)

Forms or is added in treatment

Below EPA’s limits

39.2ppb

Highest yearly average, 2020 to 2026

2026 average: 33 ppb

Averaged by year, the highest was 39.2 ppb, in 2020, below EPA’s legal limit of 60 ppb. Its highest single sample was 59 ppb. In 2026, the latest year on file, its four samples averaged 33 ppb. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 55.2 ppb, in 2015.

What handles it

No certification claim covers this compound yet.

Total trihalomethanes (TTHM)

Forms or is added in treatment

Below EPA’s limits

49.8ppb

Highest yearly average, 2020 to 2026

2026 average: 34.8 ppb

Averaged by year, the highest was 49.8 ppb, in 2021, below EPA’s legal limit of 80 ppb. Its highest single sample was 69 ppb. In 2026, the latest year on file, its four samples averaged 34.8 ppb. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 70.2 ppb, in 2015.

What handles it

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

Nitrate

Comes from the source

Below EPA’s limits

2.6ppm

Highest sample; found in 11 of 20

2026: not found

The highest sample, in 2025, was 2.6 ppm, below EPA’s legal limit of 10 ppm. In 2026, the latest year on file, it wasn’t found in its one sample. Earlier, from 2012 to 2019, EPA’s file shows a highest sample of 1.5 ppm, in 2019.

What handles it

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

Hardness

Soft to moderately hard depending on the source, 42 to 108 mg/L (2.5 to 6.3 grains per gallon), across 3 sampling points, 2020 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

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

What this report can’t tell you

  • Everything else. Haloacetic acids (HAA5), total trihalomethanes (TTHM), nitrate, arsenic, chromium (total) and fluoride results here are California’s own from 2020 on, with EPA’s national file for 2012 to 2019. Del Oro Water Co. - Lime Saddle Marina’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 Feb. 4, 2020 to June 19, 2026.

Testing your own tap

Del Oro Water Co. - Lime Saddle Marina’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 Del Oro Water Co. - Lime Saddle Marina serves, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.

  • Fruit Growers Laboratory, Inc.

    Chico, CA · about 18 miles

    Certified for bacteria

    (530) 343-5818

  • Cranmer Engineering, Inc.

    Grass Valley, CA · about 38 miles

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

    (530) 273-7284

  • Eurofins Sacramento Service Center

    West Sacramento, CA · about 69 miles

    Certified for bacteria, nitrate, minerals and other inorganics

    (626) 386-1221

All 145 certified labs for California

Sources

PWSID CA0405001. Rebuilt from EPA data on Oct. 18, 2026.

Also in Butte County

All California utilities

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