Public water system record
Cottonwood-Tselani NTUA
On record as serving Cottonwood, Apache County, AZ · Serves 1,334 people
Federal records show no health-based violations and 4 monitoring/reporting issues for Cottonwood-Tselani NTUA in the last ten years. At least one of these issues remains unresolved.
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
- Cottonwood-Tselani NTUA buys its water from Pinon-District 4 NTUA.
- Record on file since 2002, with 4 health-based violations before October 19, 2016.
Check whether Cottonwood-Tselani 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 | Active |
Full record since 2002
EPA's records for Cottonwood-Tselani NTUA go back to 2002. Before October 19, 2016 they list 4 health-based violations (4 resolved) and 30 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 2000s | 0 | 25 |
| 2010 to October 18, 2016 | 4 | 5 |
| 2020s | 0 | 2 |
Most recent health-based violation before October 19, 2016: Arsenic, began July 2013, Resolved.
Show all 4 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Arsenic
Contaminant limit exceeded
Measured 0.01045 mg/L, federal limit 0.01 mg/L (at or just above the limit)
|
Jul 1, 2013 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.01053 mg/L, federal limit 0.01 mg/L (1.1 times the limit)
|
Apr 1, 2013 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jul 1, 2011 | Resolved |
|
Gross Alpha, Excl. Radon and U
Contaminant limit exceeded
Measured 15.1 pCi/L, federal limit 15 pCi/L (at or just above the limit)
|
Oct 1, 2010 | Resolved |
Where the water comes from
Cottonwood-Tselani NTUA buys its water from Pinon-District 4 NTUA. It lists no wells or intakes of its own.
Buys water from
- Pinon-District 4 NTUA Ft Defiance, AZ
Annual water quality report
Cottonwood-Tselani 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