Public water system record
Second Mesa Day School - BIA
Serves Second Mesa, Navajo County, AZ · 255 people served
Federal records show 11 health-based violations and 16 monitoring/reporting issues for Second Mesa Day School - BIA in the last ten years. The most serious issue in this window was a resolved Arsenic violation.
System profile
- Health-based violations, last 10 years
- 11
- Resolved
- 11
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 16
Key facts
- Second Mesa Day School - BIA draws water from 1 well.
- Highest measured level in the last 10 years: Arsenic, 0.0182 mg/L, federal limit 0.01 mg/L (1.8 times the limit), 2017.
- Most recent formal enforcement: compliance order (no penalty) by EPA, November 2013.
- Record on file since 2007, with 11 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 17 service lines.
Check whether Second Mesa Day School - BIA 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 |
|---|---|---|---|---|
|
Arsenic
Contaminant limit exceeded
Measured 0.0102 mg/L, federal limit 0.01 mg/L (at or just above the limit)
|
330 | Jan 1, 2025 | Resolved | No |
|
Arsenic
Contaminant limit exceeded
Measured 0.0112 mg/L, federal limit 0.01 mg/L (1.1 times the limit)
|
330 | Oct 1, 2024 | Resolved | No |
|
Arsenic
Contaminant limit exceeded
Measured 0.0109 mg/L, federal limit 0.01 mg/L (1.1 times the limit)
|
330 | Jul 1, 2024 | Resolved | No |
|
Arsenic
Contaminant limit exceeded
Measured 0.0104 mg/L, federal limit 0.01 mg/L (at or just above the limit)
|
330 | Apr 1, 2024 | Resolved | No |
|
Arsenic
Contaminant limit exceeded
Measured 0.0111 mg/L, federal limit 0.01 mg/L (1.1 times the limit)
|
330 | Oct 1, 2019 | Resolved | No |
|
Arsenic
Contaminant limit exceeded
Measured 0.0117 mg/L, federal limit 0.01 mg/L (1.2 times the limit)
|
330 | Jul 1, 2019 | Resolved | No |
|
Arsenic
Contaminant limit exceeded
Measured 0.013 mg/L, federal limit 0.01 mg/L (1.3 times the limit)
|
330 | Apr 1, 2019 | Resolved | No |
|
Arsenic
Contaminant limit exceeded
Measured 0.0112 mg/L, federal limit 0.01 mg/L (1.1 times the limit)
|
330 | Jan 1, 2019 | Resolved | No |
|
Arsenic
Contaminant limit exceeded
Measured 0.0136 mg/L, federal limit 0.01 mg/L (1.4 times the limit)
|
330 | Apr 1, 2017 | Resolved | No |
|
Arsenic
Contaminant limit exceeded
Measured 0.0182 mg/L, federal limit 0.01 mg/L (1.8 times the limit)
|
330 | Jan 1, 2017 | Resolved | No |
|
Arsenic
Contaminant limit exceeded
Measured 0.0134 mg/L, federal limit 0.01 mg/L (1.3 times the limit)
|
330 | Oct 1, 2016 | Resolved | No |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Chlorine
Monitoring and reporting
|
Oct 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Chlorine
Monitoring and reporting
|
Jul 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Public Notice
OTHER
|
Jan 1, 2025 | Resolved |
|
Public Notice
OTHER
|
Jul 1, 2024 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2024 | Resolved |
|
Public Notice
OTHER
|
Jun 1, 2024 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Jun 1, 2024 | Resolved |
|
Public Notice
OTHER
|
Apr 1, 2024 | Resolved |
|
Chlorine
Monitoring and reporting
|
Apr 1, 2024 | Resolved |
|
Nitrate
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2022 | Active |
|
Chlorine
Monitoring and reporting
|
Jul 1, 2021 | Resolved |
|
Chlorine
Monitoring and reporting
|
Apr 1, 2021 | Resolved |
|
Arsenic
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Arsenic
Monitoring and reporting
|
Jul 1, 2018 | Resolved |
|
Public Notice
OTHER
|
Jul 1, 2013 | Resolved |
Full record since 2007
EPA's records for Second Mesa Day School - BIA go back to 2007. Before October 19, 2016 they list 11 health-based violations (11 resolved) and 113 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 2000s | 6 | 64 |
| 2010 to October 18, 2016 | 5 | 49 |
| October 19, 2016 to 2019 | 6 | 1 |
| 2020s | 4 | 14 |
Most recent health-based violation before October 19, 2016: Arsenic, began October 2016, Resolved.
Show all 11 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Arsenic
Contaminant limit exceeded
Measured 0.0134 mg/L, federal limit 0.01 mg/L (1.3 times the limit)
|
Oct 1, 2016 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.0275 mg/L, federal limit 0.01 mg/L (2.8 times the limit)
|
Jul 1, 2013 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.0275 mg/L, federal limit 0.01 mg/L (2.8 times the limit)
|
Apr 1, 2013 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.02895 mg/L, federal limit 0.01 mg/L (2.9 times the limit)
|
Jan 1, 2013 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.02895 mg/L, federal limit 0.01 mg/L (2.9 times the limit)
|
Oct 1, 2012 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Nov 1, 2008 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.01067 mg/L, federal limit 0.01 mg/L (1.1 times the limit)
|
Jul 1, 2008 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.01267 mg/L, federal limit 0.01 mg/L (1.3 times the limit)
|
Apr 1, 2008 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.017 mg/L, federal limit 0.01 mg/L (1.7 times the limit)
|
Jan 1, 2008 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.017 mg/L, federal limit 0.01 mg/L (1.7 times the limit)
|
Oct 1, 2007 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.014 mg/L, federal limit 0.01 mg/L (1.4 times the limit)
|
Apr 1, 2007 | Resolved |
Enforcement actions
EPA took 4 formal enforcement actions against Second Mesa Day School - BIA between 2011 and 2013, filed as 5 records in EPA's data. The most recent was a compliance order (no penalty) in November 2013.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Nov 18, 2013 | EPA | Compliance order (no penalty) | 2 violations (2 health-based): Arsenic |
| Jul 9, 2013 | EPA | Compliance order (no penalty) | 1 violation (1 health-based): Arsenic |
| Apr 3, 2013 | EPA | Compliance order (no penalty) | 1 violation (1 health-based): Arsenic |
| Mar 23, 2011 | EPA | Compliance order (no penalty) | 6 violations (5 health-based): Arsenic |
What the violations mean
Arsenic
11 incidentsArsenic exceeded the federal limit
Long-term arsenic exposure is linked to cancer and cardiovascular effects
Where the water comes from
Second Mesa Day School - BIA draws water from 1 well.
Annual water quality report
Second Mesa Day School - BIA 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 Second Mesa Day School - BIA 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 EPA Region 9.
Certified drinking water labs by state EPA guidance for private wells