Public water system record
Round Rock NTUA
On record as serving Round Rock, Apache County, AZ · Serves 876 people
Federal records show no health-based violations and 4 monitoring/reporting issues for Round Rock NTUA 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
- 4
Key facts
- Round Rock NTUA draws water from 1 well.
- Most recent formal enforcement: compliance order (no penalty) by Navajo Nation EPA, September 2013.
- Record on file since 2002, with 9 health-based violations before October 19, 2016.
Check whether Round Rock NTUA 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 |
|---|---|---|
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Revised Total Coliform Rule
OTHER
|
Apr 1, 2016 | Resolved |
|
Stage 2 Disinfection Byproducts Rule
Monitoring and reporting
|
Oct 1, 2013 | Resolved |
Full record since 2002
EPA's records for Round Rock NTUA go back to 2002. Before October 19, 2016 they list 9 health-based violations (9 resolved) and 13 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 2000s | 1 | 7 |
| 2010 to October 18, 2016 | 8 | 6 |
| 2020s | 0 | 2 |
Most recent health-based violation before October 19, 2016: Combined Radium (-226 and -228), began July 2013, Resolved.
Show all 9 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 5.325 pCi/L, federal limit 5 pCi/L (1.1 times the limit)
|
Jul 1, 2013 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 5.5 pCi/L, federal limit 5 pCi/L (1.1 times the limit)
|
Apr 1, 2013 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 6.075 pCi/L, federal limit 5 pCi/L (1.2 times the limit)
|
Jan 1, 2013 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 6.075 pCi/L, federal limit 5 pCi/L (1.2 times the limit)
|
Oct 1, 2012 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 5.46667 pCi/L, federal limit 5 pCi/L (1.1 times the limit)
|
Jul 1, 2012 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 5.46667 pCi/L, federal limit 5 pCi/L (1.1 times the limit)
|
Apr 1, 2012 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 5.46667 pCi/L, federal limit 5 pCi/L (1.1 times the limit)
|
Jan 1, 2012 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 5.1 pCi/L, federal limit 5 pCi/L (at or just above the limit)
|
Oct 1, 2010 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Aug 1, 2007 | Resolved |
Enforcement actions
Navajo Nation EPA took 1 formal enforcement action against Round Rock NTUA in 2013, filed as 5 records in EPA's data. The most recent was a compliance order (no penalty) in September 2013.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Sep 23, 2013 | Navajo Nation EPA | Compliance order (no penalty) | 5 violations (5 health-based): Combined Radium (-226 and -228) |
Where the water comes from
Round Rock NTUA draws water from 1 well.
Annual water quality report
Round Rock NTUA 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.
Where the state allows it, systems serving fewer than 10,000 people may publish the report in a local newspaper or news site instead of mailing it, and must provide a copy on request.
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 EPA Region 9.
Certified drinking water labs by state EPA guidance for private wells