Rolling Green Utilities, Inc.

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: 940 people
Connections: 285
Water source: Groundwater
Based in: Big Pine, CA
County: Inyo
Owner: Private
Hardness: Soft

The ZIP code it serves

93513

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. 1 health-based violation since 2016.

What was found

Nitrate, fluoride, arsenic, chromium (total) and total trihalomethanes (TTHM): California’s own results, samples taken from June 17, 2020 to Dec. 3, 2025, with EPA’s 2012 to 2019 file for earlier years.

Below EPA’s limits2

Nitrate

Comes from the source

Below EPA’s limits

1.1ppm

Highest sample; found in 18 of 19

2025 average: 0.45 ppm

The highest sample, in 2020, was 1.1 ppm, below EPA’s legal limit of 10 ppm. In 2025, the latest year on file, its three samples averaged 0.45 ppm. Earlier, from 2012 to 2019, EPA’s file shows a highest sample of 0.93 ppm, in 2019.

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

0.12ppm

Highest yearly average, 2020 to 2023

Averaged by year, the highest was 0.12 ppm, in 2023, below EPA’s legal limit of 4.0 ppm. Its highest single sample was 0.13 ppm. That was also the latest year on file. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 0.19 ppm, in 2014.

What handles it

NSF/ANSI 58 look for “Fluoride Reduction”
NSF/ANSI 53 look for “Fluoride”

4 compounds tested and not foundBelow the reporting level in every sample. Not found is not the same as zero.

Arsenic
Chromium (total)
Lead
Total trihalomethanes (TTHM)

Hardness

Soft, typically 44 mg/L (2.6 grains per gallon), across 3 sampling points, in 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 2.6 grains per gallon, salt included Softener or salt-free conditioner?California water hardness, utility by utility

Violations since 2016

Contaminant or rule	Type	Period	Measured	Status
Lead and Copper Rule Revisions	The required inventory of lead service lines was not completed or submitted on time.EPA: LSL Inventory	Oct. 17, 2024	—	Resolved
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. Nitrate, fluoride, arsenic, chromium (total) and total trihalomethanes (TTHM) results here are California’s own from 2020 on, with EPA’s national file for 2012 to 2019. Rolling Green Utilities, Inc.’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 June 17, 2020 to Dec. 3, 2025.

Testing your own tap

Rolling Green Utilities, Inc.’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 lab California certifies closest to the area Rolling Green Utilities, Inc. serves, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.