Collins Aire Mhc
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
- 946 people
- Connections
- 338
- Water source
- Surface water bought from another system
- Based in
- Aurora, CO
- County
- Larimer
- Owner
- Private
- Hardness
- Soft
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
Haloacetic acids (HAA5), total trihalomethanes (TTHM) and fluoride: Colorado’s own results, samples taken from March 20, 2024 to Aug. 5, 2026.
Below EPA’s limits3
Haloacetic acids (HAA5)
Forms or is added in treatment
28.9ppb
Highest yearly average, 2024 to 2026
Averaged by year, the highest was 28.9 ppb, in 2026, below EPA’s legal limit of 60 ppb. Its highest single sample was 38.9 ppb. That was also the latest year on file.
What handles it
No certification claim covers this compound yet.
Total trihalomethanes (TTHM)
Forms or is added in treatment
31.4ppb
Highest yearly average, 2024 to 2026
2026 average: 25.9 ppb
Averaged by year, the highest was 31.4 ppb, in 2024, below EPA’s legal limit of 80 ppb. Its highest single sample was 35.5 ppb. In 2026, the latest year on file, its three samples averaged 25.9 ppb.
What handles it
- NSF/ANSI 53 look for “Trihalomethanes (TTHM) Reduction”
- NSF/ANSI 58 look for “Trihalomethanes (TTHM) Reduction”
Fluoride
Forms or is added in treatment
0.69ppm
Highest yearly average, 2026
Averaged by year, the highest was 0.69 ppm, in 2026, below EPA’s legal limit of 4.0 ppm. That is the only year on file.
What handles it
- NSF/ANSI 58 look for “Fluoride Reduction”
- NSF/ANSI 53 look for “Fluoride”
One compound tested and not foundBelow the reporting level in every sample. Not found is not the same as zero.
- Lead
Hardness
Soft, typically 29 mg/L (1.7 grains per gallon), across 2 sampling points, in 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.
Violations since 2016
No health-based violations on file with EPA since 2016. There are 6 monitoring or reporting violations: a sample missed, late or not reported.
What this report can’t tell you
Everything else. Haloacetic acids (HAA5), total trihalomethanes (TTHM) and fluoride results here are Colorado’s own from 2024 on, with EPA’s national file for 2012 to 2019. Collins Aire Mhc’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 March 20, 2024 to Aug. 5, 2026.
Testing your own tap
No lab Colorado certifies is within 75 miles of the area Collins Aire Mhc 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
- Hardness: Colorado Department of Public Health and Environment, Water Quality Control Division, results from March 17, 2026 to March 17, 2026, read Oct. 17, 2026
- Limits and goals: each contaminant’s page, with its EPA source.
- How this page is built: methodology.
PWSID CO0135186. 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 reportCollins Aire Mhc 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