Public water system record
Sierra Bonita Estates
On record as serving Arapahoe County, CO · Serves 122 people
Federal records show 1 health-based violation and 2 monitoring/reporting issues for Sierra Bonita Estates in the last ten years. The most serious issue in this window was a resolved LEAD AND COPPER RULE REVISIONS violation.
System profile
- Health-based violations, last 10 years
- 1
- Resolved
- 1
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 2
Key facts
- Sierra Bonita Estates buys its water from City of Aurora.
- Lead pipe inventory: 0 lead and 0 unknown out of 48 service lines.
Check whether Sierra Bonita Estates 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.
| Contaminant | Rule family | Start date | Status | Acute |
|---|---|---|---|---|
|
LEAD AND COPPER RULE REVISIONS
Treatment technique failure
|
350 | Jul 2, 2025 | Resolved | No |
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
|
Oct 1, 2025 | Resolved |
|
Public Notice
OTHER
|
Sep 19, 2025 | Resolved |
What the violations mean
LEAD AND COPPER RULE REVISIONS
1 incidentThe system did not complete a treatment step or action that the LEAD AND COPPER RULE REVISIONS requires (a treatment technique violation).
The utility had to notify customers about this violation.
Where the water comes from
Sierra Bonita Estates buys its water from City of Aurora. It lists no wells or intakes of its own.
Buys water from
- City of Aurora Aurora, CO
Annual water quality report
Sierra Bonita Estates 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 500 or fewer people may meet the rule by telling customers the report is available on request, so you may need to ask Sierra Bonita Estates for a copy.
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