Public water system record
Cottonwood WSD
Serves Parker, Douglas County, CO · 10,867 people served
Federal records show no health-based violations and 37 monitoring/reporting issues for Cottonwood WSD in the last ten years.
System profile
- Health-based violations, last 10 years
- 0
- Resolved
- 0
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 37
Key facts
- Cottonwood WSD draws water from 8 wells (3 of them for emergency, seasonal or other part-time use).
- Record on file since 1998, with 0 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 2,362 service lines.
Check whether Cottonwood WSD serves your address
Health-based violations
Since October 2016Violation data reflects EPA records through March 2026. For the most current status, visit the EPA ECHO database.
None since October 2016.
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Lead and Copper Rule
Monitoring and reporting
|
Jul 1, 2025 | Resolved |
|
Public Notice
OTHER
|
Mar 24, 2025 | Resolved |
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Oct 1, 2024 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Oct 1, 2024 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2023 | Resolved |
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Jul 1, 2022 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Jul 1, 2022 | Resolved |
|
Combined Uranium
Monitoring and reporting
|
Jan 1, 2020 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Gross Alpha, Excl. Radon and U
Monitoring and reporting
|
Jan 1, 2020 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Chlordane
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
ETHYLENE DIBROMIDE
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
1,2-DIBROMO-3-CHLOROPROPANE
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Total Polychlorinated Biphenyls (PCB)
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Pentachlorophenol
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Benzo(a)pyrene
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
HEXACHLOROBENZENE
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
2,4,5-TP
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
2,4-D
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Heptachlor epoxide
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Heptachlor
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
LASSO
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Atrazine
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Carbofuran
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Hexachlorocyclopentadiene
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Dinoseb
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Picloram
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Di(2-ethylhexyl) phthalate
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Simazine
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
OXAMYL
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Di(2-ethylhexyl) adipate
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Endothall
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Diquat
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Dalapon
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Toxaphene
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Methoxychlor
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
BHC-GAMMA
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Endrin
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
Full record since 1998
EPA's records for Cottonwood WSD go back to 1998. Before October 19, 2016 they list no health-based violations and 9 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 0 | 2 |
| 2000s | 0 | 5 |
| 2010 to October 18, 2016 | 0 | 2 |
| October 19, 2016 to 2019 | 0 | 28 |
| 2020s | 0 | 9 |
Where the water comes from
Cottonwood WSD draws water from 8 wells (3 of them for emergency, seasonal or other part-time use). It also has an emergency connection to Joint Water Purification Plant and an interim connection to Wise Project. 1 other public water system has an emergency connection to Cottonwood WSD.
Emergency or part-time connections to
- Joint Water Purification Plant Centennial, CO
- Wise Project Greenwood Village, CO
Annual water quality report
Cottonwood WSD must give its customers an annual water quality report (Consumer Confidence Report) by July 1, with the levels its tests found in the previous year.
Systems serving 10,000 or more people must mail or deliver the report to every customer, and from 2027 they must send it twice a year.
Find a posted report with EPA's Consumer Confidence Report search
Testing your own water
To test the water at your tap, or a private well this record does not cover, use a laboratory certified for drinking water by Colorado.
Certified drinking water labs by state EPA guidance for private wells