Alpine Mountain Ranch MD
What EPA’s and Colorado’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
- 25 people
- Connections
- 14
- Water source
- Groundwater influenced by surface water
- Based in
- Steamboat Springs, CO
- County
- Routt
- Owner
- Private
The short answer
Nothing in EPA’s and Colorado’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
Nitrate, total trihalomethanes (TTHM), haloacetic acids (HAA5), chromium (total), arsenic and fluoride: Colorado’s own results, samples taken from Aug. 31, 2020 to Aug. 12, 2026, with EPA’s 2012 to 2019 file for earlier years.
Below EPA’s limits4
Nitrate
Comes from the source
3.5ppm
Highest sample; found in 7 of 7
2026, one sample: 3.5 ppm
The highest sample, in 2026, was 3.5 ppm, below EPA’s legal limit of 10 ppm. That was also the latest year on file, and its one sample was 3.5 ppm. Earlier, from 2012 to 2019, EPA’s file shows a highest sample of 0.8 ppm, in 2015.
What handles it
- NSF/ANSI 58 look for “Nitrate/Nitrite Reduction”
- NSF/ANSI 53 look for “Nitrate/Nitrite (30 ppm challenge)”
Total trihalomethanes (TTHM)
Forms or is added in treatment
24.9ppb
Highest yearly average, 2020 to 2026
Averaged by year, the highest was 24.9 ppb, in 2026, below EPA’s legal limit of 80 ppb. That was also the latest year on file. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 41.7 ppb, in 2014.
What handles it
- NSF/ANSI 53 look for “Trihalomethanes (TTHM) Reduction”
- NSF/ANSI 58 look for “Trihalomethanes (TTHM) Reduction”
Haloacetic acids (HAA5)
Forms or is added in treatment
10.3ppb
Highest yearly average, 2020 to 2026
2026: not found
Averaged by year, the highest was 10.3 ppb, in 2024, below EPA’s legal limit of 60 ppb. 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 yearly average of 17.1 ppb, in 2012.
What handles it
No certification claim covers this compound yet.
Chromium (total)
Comes from the source
2.0ppb
Highest yearly average, 2020 to 2023
2023, one sample: 2.0 ppb
Averaged by year, the highest was 2.0 ppb, in 2020, below EPA’s legal limit of 100 ppb. In 2023, the latest year on file, its one sample was 2.0 ppb. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 1.0 ppb, in 2018.
What handles it
- NSF/ANSI 58 look for “Chromium (Hexavalent) Reduction”
- NSF/ANSI 53 look for “Chromium Reduction”
3 compounds tested and not foundBelow the reporting level in every sample. Not found is not the same as zero.
- Arsenic
- Fluoride
- Lead
Violations since 2016
No health-based violations on file with EPA since 2016. There are 18 monitoring or reporting violations: a sample missed, late or not reported.
What this report can’t tell you
Everything else. Nitrate, total trihalomethanes (TTHM), haloacetic acids (HAA5), chromium (total), arsenic and fluoride results here are Colorado’s own from 2020 on, with EPA’s national file for 2012 to 2019. Alpine Mountain Ranch MD’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; Colorado’s results run from Aug. 31, 2020 to Aug. 12, 2026.
Testing your own tap
No lab Colorado certifies is within 75 miles of the area Alpine Mountain Ranch MD serves on the state’s list. Some take samples by mail; the state’s page lists them all.
All 54 certified labs for ColoradoSources
- EPA UCMR 5 occurrence data, file of Oct. 15, 2026
- EPA SDWA bulk download (SDWIS federal data), 2026 Q3
- Colorado Department of Public Health and Environment, Water Quality Control Division, results from Jan. 3, 2020 to Oct. 6, 2026, read Oct. 17, 2026
- EPA Six-Year Review 4 compliance monitoring data, 2012 to 2019, file of Feb. 5, 2024
- Limits and goals: each contaminant’s page, with its EPA source.
- How this page is built: methodology.
PWSID CO0154117. Rebuilt from EPA data on Oct. 18, 2026.
What to do next
- Nothing here is above a health goalIn EPA’s and Colorado’s records for this utility. They don’t cover everything, which is why the next step matters.Every contaminant TapBuff tracks
- Get the utility’s own reportAlpine Mountain Ranch MD must send you a water quality report every year. It covers contaminants this page does not show.How to read it
- Test your own tap for leadYour service line, solder and fixtures decide the lead at your faucet, not the utility’s average.Lead in your water: what to do
- Decide if you want a filter at allA filter for taste or chlorine is a preference, not a need. The standards say what each kind can do.NSF/ANSI standards, decoded