Public water system record
Thunderbird Farms DWID
Serves an area of Pinal County, AZ that includes Maricopa · 2,231 people served
Federal records show 3 health-based violations and 1 monitoring/reporting issue for Thunderbird Farms DWID in the last ten years. The most serious issue in this window was a resolved Nitrate violation.
System profile
- Health-based violations, last 10 years
- 3
- Resolved
- 3
- Unresolved
- 0
- Any acute record
- Yes
- Monitoring issues, last 10 years
- 1
Key facts
- Thunderbird Farms DWID draws water from 2 wells.
- Highest measured level in the last 10 years: Nitrate, 14 mg/L, federal limit 10 mg/L (1.4 times the limit), 2017.
- Most recent formal enforcement: compliance order (no penalty) by Arizona, May 2015.
- Record on file since 1980, with 46 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 662 service lines.
Check whether Thunderbird Farms DWID 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 |
|---|---|---|---|---|
|
Nitrate
Contaminant limit exceeded
Measured 14 mg/L, federal limit 10 mg/L (1.4 times the limit)
|
330 | Apr 1, 2017 | Resolved | Yes |
|
Arsenic
Contaminant limit exceeded
Measured 0.011 mg/L, federal limit 0.01 mg/L (1.1 times the limit)
|
330 | Jan 1, 2017 | Resolved | No |
|
Nitrate
Contaminant limit exceeded
Measured 14 mg/L, federal limit 10 mg/L (1.4 times the limit)
|
330 | Jan 1, 2017 | Resolved | Yes |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Consumer Confidence Rule
OTHER
|
Oct 1, 2018 | Resolved |
Full record since 1980
EPA's records for Thunderbird Farms DWID go back to 1980. Before October 19, 2016 they list 46 health-based violations (44 resolved, 2 archived by EPA without a recorded fix) and 174 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1980s | 2 | 9 |
| 1990s | 0 | 9 |
| 2000s | 14 | 80 |
| 2010 to October 18, 2016 | 30 | 76 |
| October 19, 2016 to 2019 | 3 | 1 |
Most recent health-based violation before October 19, 2016: Nitrate (acute), began July 2016, Resolved.
Show all 46 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Nitrate (acute)
Contaminant limit exceeded
Measured 15 mg/L, federal limit 10 mg/L (1.5 times the limit)
|
Jul 1, 2016 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.011 mg/L, federal limit 0.01 mg/L (1.1 times the limit)
|
Apr 1, 2016 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
Measured 16 mg/L, federal limit 10 mg/L (1.6 times the limit)
|
Apr 1, 2016 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
Measured 15 mg/L, federal limit 10 mg/L (1.5 times the limit)
|
Jan 1, 2016 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.011 mg/L, federal limit 0.01 mg/L (1.1 times the limit)
|
Oct 1, 2015 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.011 mg/L, federal limit 0.01 mg/L (1.1 times the limit)
|
Jul 1, 2015 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
Measured 17 mg/L, federal limit 10 mg/L (1.7 times the limit)
|
Apr 1, 2015 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
Measured 17 mg/L, federal limit 10 mg/L (1.7 times the limit)
|
Oct 1, 2014 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
Measured 15 mg/L, federal limit 10 mg/L (1.5 times the limit)
|
Oct 1, 2014 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
Measured 18 mg/L, federal limit 10 mg/L (1.8 times the limit)
|
Jul 1, 2014 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
Measured 17 mg/L, federal limit 10 mg/L (1.7 times the limit)
|
Apr 1, 2014 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
Measured 16 mg/L, federal limit 10 mg/L (1.6 times the limit)
|
Jan 1, 2014 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
Measured 17 mg/L, federal limit 10 mg/L (1.7 times the limit)
|
Oct 1, 2013 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
Measured 17 mg/L, federal limit 10 mg/L (1.7 times the limit)
|
Jul 1, 2013 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
Measured 15 mg/L, federal limit 10 mg/L (1.5 times the limit)
|
Oct 1, 2012 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.011 mg/L, federal limit 0.01 mg/L (1.1 times the limit)
|
Jul 1, 2012 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
Measured 17 mg/L, federal limit 10 mg/L (1.7 times the limit)
|
Jul 1, 2012 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
Measured 16 mg/L, federal limit 10 mg/L (1.6 times the limit)
|
Apr 1, 2012 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.012 mg/L, federal limit 0.01 mg/L (1.2 times the limit)
|
Apr 1, 2012 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
Measured 14 mg/L, federal limit 10 mg/L (1.4 times the limit)
|
Jan 1, 2012 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.013 mg/L, federal limit 0.01 mg/L (1.3 times the limit)
|
Oct 1, 2011 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
Measured 11 mg/L, federal limit 10 mg/L (1.1 times the limit)
|
Jul 1, 2011 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
Measured 12 mg/L, federal limit 10 mg/L (1.2 times the limit)
|
Apr 1, 2011 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.013 mg/L, federal limit 0.01 mg/L (1.3 times the limit)
|
Jan 1, 2011 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
Measured 12 mg/L, federal limit 10 mg/L (1.2 times the limit)
|
Oct 1, 2010 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.013 mg/L, federal limit 0.01 mg/L (1.3 times the limit)
|
Jul 1, 2010 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
Measured 12 mg/L, federal limit 10 mg/L (1.2 times the limit)
|
Apr 1, 2010 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.013 mg/L, federal limit 0.01 mg/L (1.3 times the limit)
|
Apr 1, 2010 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
Measured 11 mg/L, federal limit 10 mg/L (1.1 times the limit)
|
Jan 1, 2010 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.012 mg/L, federal limit 0.01 mg/L (1.2 times the limit)
|
Jan 1, 2010 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.012 mg/L, federal limit 0.01 mg/L (1.2 times the limit)
|
Oct 1, 2009 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
Measured 11 mg/L, federal limit 10 mg/L (1.1 times the limit)
|
Oct 1, 2009 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
Measured 11 mg/L, federal limit 10 mg/L (1.1 times the limit)
|
Jul 1, 2009 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.012 mg/L, federal limit 0.01 mg/L (1.2 times the limit)
|
Jul 1, 2009 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.012 mg/L, federal limit 0.01 mg/L (1.2 times the limit)
|
Apr 1, 2009 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.013 mg/L, federal limit 0.01 mg/L (1.3 times the limit)
|
Apr 1, 2009 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
Measured 11 mg/L, federal limit 10 mg/L (1.1 times the limit)
|
Jan 1, 2009 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.013 mg/L, federal limit 0.01 mg/L (1.3 times the limit)
|
Jan 1, 2009 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.012 mg/L, federal limit 0.01 mg/L (1.2 times the limit)
|
Oct 1, 2008 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.012 mg/L, federal limit 0.01 mg/L (1.2 times the limit)
|
Jul 1, 2008 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.012 mg/L, federal limit 0.01 mg/L (1.2 times the limit)
|
Apr 1, 2008 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.015 mg/L, federal limit 0.01 mg/L (1.5 times the limit)
|
Oct 1, 2007 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jan 1, 2002 | Resolved |
|
Fluoride
Contaminant limit exceeded
Measured 4.11 mg/L, federal limit 4 mg/L (at or just above the limit)
|
Jan 1, 2000 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
|
Jul 1, 1988 | Archived |
|
Fluoride
Contaminant limit exceeded
|
Jul 1, 1988 | Archived |
Enforcement actions
Arizona regulators took 2 formal enforcement actions against Thunderbird Farms DWID between 2010 and 2015. The most recent was a compliance order (no penalty) in May 2015.
| Date | By | Action | Violations covered |
|---|---|---|---|
| May 19, 2015 | Arizona | Compliance order (no penalty) | 24 violations (24 health-based): Nitrate, Arsenic |
| Jun 30, 2010 | Arizona | Compliance order (no penalty) | 77 violations (41 health-based): Nitrate, Arsenic |
What the violations mean
Nitrate
2 incidentsNitrate exceeded the federal limit
High nitrate is especially dangerous for infants under 6 months and can cause blue baby syndrome
Arsenic
1 incidentArsenic exceeded the federal limit
Long-term arsenic exposure is linked to cancer and cardiovascular effects
Where the water comes from
Thunderbird Farms DWID draws water from 2 wells.
Annual water quality report
Thunderbird Farms DWID 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 Arizona.
Certified drinking water labs by state EPA guidance for private wells