Bailey WSD
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
- 483 people
- Connections
- 113
- Water source
- Surface water
- Based in
- Bailey, CO
- County
- Park
- Owner
- Local government
The ZIP code it serves
The short answer
1 result is above the health goal. The worst: Uranium, above the health goal. 3 health-based violations since 2016.
What handles itWhat was found
Uranium, total trihalomethanes (TTHM), haloacetic acids (HAA5), nitrate, fluoride, chromium (total) and arsenic: Colorado’s own results, samples taken from Jan. 20, 2020 to Sept. 28, 2026, with EPA’s 2012 to 2019 file for earlier years.
Above the health goal1
Uranium
Comes from the source
0.25ppb
Highest yearly average, 2025
Averaged by year, the highest was 0.25 ppb, in 2025: below EPA’s legal limit of 30 ppb, but above its health goal of zero. Its highest single sample was 0.5 ppb. That is the only year on file.
What handles it
- NSF/ANSI 58 look for “Uranium”
Below EPA’s limits5
Total trihalomethanes (TTHM)
Forms or is added in treatment
55.5ppb
Highest yearly average, 2020 to 2026
2026, one sample: 29.4 ppb
Averaged by year, the highest was 55.5 ppb, in 2020, below EPA’s legal limit of 80 ppb. Its highest single sample was 85.3 ppb. In 2026, the latest year on file, its one sample was 29.4 ppb. EPA recorded no violation for total trihalomethanes (TTHM) at this utility since 2020. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 60 ppb, in 2017.
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
13.4ppb
Highest yearly average, 2020 to 2026
2026, one sample: 10.6 ppb
Averaged by year, the highest was 13.4 ppb, in 2021, below EPA’s legal limit of 60 ppb. Its highest single sample was 18.2 ppb. In 2026, the latest year on file, its one sample was 10.6 ppb. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 17.1 ppb, in 2017.
What handles it
No certification claim covers this compound yet.
Nitrate
Comes from the source
0.9ppm
Highest sample; found in 8 of 8
2026, one sample: 0.4 ppm
The highest sample, in 2021, was 0.9 ppm, below EPA’s legal limit of 10 ppm. In 2026, the latest year on file, its one sample was 0.4 ppm. Earlier, from 2012 to 2019, EPA’s file shows a highest sample of 0.7 ppm, in 2015.
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
0.33ppm
Highest yearly average, 2020 to 2026
2026, one sample: 0.3 ppm
Averaged by year, the highest was 0.33 ppm, in 2021, below EPA’s legal limit of 4.0 ppm. In 2026, the latest year on file, its one sample was 0.3 ppm. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 0.22 ppm, in 2019.
What handles it
- NSF/ANSI 58 look for “Fluoride Reduction”
- NSF/ANSI 53 look for “Fluoride”
Chromium (total)
Comes from the source
2.0ppb
Highest yearly average, 2020 to 2026
2026: not found
Averaged by year, the highest was 2.0 ppb, in 2022, below EPA’s legal limit of 100 ppb. In 2026, the latest year on file, it wasn’t found in its one sample.
What handles it
- NSF/ANSI 58 look for “Chromium (Hexavalent) Reduction”
- NSF/ANSI 53 look for “Chromium Reduction”
2 compounds tested and not foundBelow the reporting level in every sample. Not found is not the same as zero.
- Arsenic
- Lead
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.”
- NSF/ANSI 58
Claim: Uranium
For: Uranium
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 costsViolations since 2016
| Contaminant or rule | Type | Period | Measured | Status |
|---|---|---|---|---|
| Groundwater Rule | A significant problem found in a state inspection was not fixed on time.EPA: Failure To Address Deficiency | Aug. 30, 2025 | — | Unaddressed |
| Groundwater Rule | A significant problem found in a state inspection was not fixed on time.EPA: Failure To Address Deficiency | Aug. 30, 2025 | — | Unaddressed |
| Groundwater Rule | A significant problem found in a state inspection was not fixed on time.EPA: Failure To Address Deficiency | Aug. 30, 2025 | — | Unaddressed |
| Health-based violations only. Resolved and archived mean the utility returned to compliance or the state closed the record. 35 monitoring or reporting violations not shown. | ||||
What this report can’t tell you
Everything else. Uranium, total trihalomethanes (TTHM), haloacetic acids (HAA5), nitrate, fluoride, chromium (total) and arsenic results here are Colorado’s own from 2020 on, with EPA’s national file for 2012 to 2019. Bailey WSD’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 Jan. 20, 2020 to Sept. 28, 2026.
Testing your own tap
The 3 labs Colorado certifies closest to the area Bailey WSD serves, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.
GeoWater Services
Evergreen, CO · about 12 miles
Certified for bacteria
Gilpin County Public Health Agency
Black Hawk, CO · about 28 miles
Certified for bacteria
Hazen Research
Golden, CO · about 28 miles
Certified for nitrate, lead and copper, metals, minerals and other inorganics, radioactivity
Sources
- 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
- Certified labs: CDPHE certified drinking water laboratories, read Oct. 16, 2026; distances from the Census 2020 ZIP code tabulation area gazetteer
- Limits and goals: each contaminant’s page, with its EPA source.
- How this page is built: methodology.
PWSID CO0147010. Rebuilt from EPA data on Oct. 18, 2026.
What to do next
- Read up on UraniumWhat each one does to health, where it comes from, and the certification claim that addresses it.About Uranium
- Get the utility’s own reportBailey WSD 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
- Compare certified filtersWhat the filters certified for these results cost over five years, cartridges included.Compare five-year costs