Public water system record
Rolling Plains Estate
On record as serving Arapahoe County, CO · Serves 40 people
Federal records show 4 health-based violations and 15 monitoring/reporting issues for Rolling Plains Estate in the last ten years. The most serious issue in this window was a resolved Gross Alpha, Excl. Radon and U violation.
System profile
- Health-based violations, last 10 years
- 4
- Resolved
- 4
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 15
Key facts
- Rolling Plains Estate draws water from 1 well.
- Highest measured level in the last 10 years: Gross Alpha, Excl. Radon and U, 18 pCi/L, federal limit 15 pCi/L (1.2 times the limit), 2024.
- Most recent formal enforcement: compliance order (no penalty) by EPA, May 2000.
- Record on file since 1991, with 5 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 16 service lines.
Check whether Rolling Plains Estate 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 |
|---|---|---|---|---|
|
Gross Alpha, Excl. Radon and U
Contaminant limit exceeded
Measured 17 pCi/L, federal limit 15 pCi/L (1.1 times the limit)
|
340 | Oct 1, 2024 | Resolved | No |
|
Gross Alpha, Excl. Radon and U
Contaminant limit exceeded
Measured 18 pCi/L, federal limit 15 pCi/L (1.2 times the limit)
|
340 | Jul 1, 2024 | Resolved | No |
|
Groundwater Rule
Treatment technique failure
|
140 | Jun 1, 2019 | Resolved | No |
|
Groundwater Rule
Treatment technique failure
|
140 | Jun 1, 2019 | Resolved | No |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Revised Total Coliform Rule
OTHER
|
Feb 25, 2025 | Resolved |
|
Public Notice
OTHER
|
Nov 1, 2024 | Resolved |
|
Public Notice
OTHER
|
May 7, 2021 | Resolved |
|
Public Notice
OTHER
|
Feb 7, 2021 | Resolved |
|
Public Notice
OTHER
|
Nov 7, 2020 | Resolved |
|
Public Notice
OTHER
|
Aug 7, 2020 | Resolved |
|
Chlorine
Monitoring and reporting
|
Apr 1, 2020 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Apr 1, 2020 | Resolved |
|
Public Notice
OTHER
|
Feb 1, 2020 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Feb 1, 2020 | Resolved |
|
Chlorine
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
OXAMYL
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Carbofuran
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Aug 1, 2016 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Oct 1, 2013 | Resolved |
Full record since 1991
EPA's records for Rolling Plains Estate go back to 1991. Before October 19, 2016 they list 5 health-based violations (5 resolved) and 107 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 2 | 11 |
| 2000s | 2 | 21 |
| 2010 to October 18, 2016 | 1 | 75 |
| October 19, 2016 to 2019 | 2 | 2 |
| 2020s | 2 | 11 |
Most recent health-based violation before October 19, 2016: Stage 1 Disinfection Byproducts Rule, began November 2015, Resolved.
Show all 5 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Stage 1 Disinfection Byproducts Rule
Treatment technique failure
|
Nov 1, 2015 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Oct 1, 2009 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Mar 1, 2000 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Dec 1, 1999 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Nov 1, 1998 | Resolved |
Enforcement actions
EPA took 1 formal enforcement action against Rolling Plains Estate in 2000. The most recent was a compliance order (no penalty) in May 2000.
| Date | By | Action | Violations covered |
|---|---|---|---|
| May 23, 2000 | EPA | Compliance order (no penalty) | 1 violation: Consumer Confidence Rule |
What the violations mean
Gross Alpha, Excl. Radon and U
2 incidentsTest results for Gross Alpha, Excl. Radon and U were above the federal limit (a maximum contaminant level violation).
The utility had to notify customers about each of these violations.
Groundwater Rule
2 incidentsThe system did not complete a treatment step or action that the Groundwater Rule requires (a treatment technique violation).
The utility had to notify customers about each of these violations.
Where the water comes from
Rolling Plains Estate draws water from 1 well.
Annual water quality report
Rolling Plains Estate 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 Rolling Plains Estate 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