Public water system record
Town of Duncan
Serves Duncan, Greenlee County, AZ · 605 people served
Federal records show 3 health-based violations and 135 monitoring/reporting issues for Town of Duncan in the last ten years. The most serious issue in this window was a resolved Di(2-ethylhexyl) phthalate violation.
System profile
Source water
Groundwater
ZIP
85534
EPA system ID
AZ0406001
- Health-based violations, last 10 years
- 3
- Resolved
- 3
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 135
Key facts
- Town of Duncan draws water from 2 wells.
- Highest measured level in the last 10 years: Di(2-ethylhexyl) phthalate, 0.007 mg/L, federal limit 0.006 mg/L (1.2 times the limit), 2025.
- Record on file since 1979, with 2 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 264 unknown out of 356 service lines.
Check whether Town of Duncan 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 |
|---|---|---|---|---|
|
Di(2-ethylhexyl) phthalate
Contaminant limit exceeded
Measured 0.007 mg/L, federal limit 0.006 mg/L (1.2 times the limit)
|
320 | Jan 1, 2025 | Resolved | No |
|
Di(2-ethylhexyl) phthalate
Contaminant limit exceeded
Measured 0.007 mg/L, federal limit 0.006 mg/L (1.2 times the limit)
|
320 | Oct 1, 2024 | Resolved | No |
|
Groundwater Rule
Treatment technique failure
|
140 | Feb 11, 2024 | Resolved | No |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Public Notice
OTHER
|
Oct 2, 2025 | Resolved |
|
Public Notice
OTHER
|
Jul 2, 2025 | Resolved |
|
Di(2-ethylhexyl) phthalate
Monitoring and reporting
|
Jul 1, 2025 | Resolved |
|
Di(2-ethylhexyl) phthalate
Monitoring and reporting
|
Apr 1, 2025 | Resolved |
|
Styrene
Monitoring and reporting
|
Apr 1, 2025 | Resolved |
|
Ethylbenzene
Monitoring and reporting
|
Apr 1, 2025 | Resolved |
|
Toluene
Monitoring and reporting
|
Apr 1, 2025 | Resolved |
|
Benzene
Monitoring and reporting
|
Apr 1, 2025 | Resolved |
|
CHLOROBENZENE
Monitoring and reporting
|
Apr 1, 2025 | Resolved |
|
Tetrachloroethylene
Monitoring and reporting
|
Apr 1, 2025 | Resolved |
|
1,1,2-Trichloroethane
Monitoring and reporting
|
Apr 1, 2025 | Resolved |
|
Trichloroethylene
Monitoring and reporting
|
Apr 1, 2025 | Resolved |
|
1,2-Dichloropropane
Monitoring and reporting
|
Apr 1, 2025 | Resolved |
|
Carbon tetrachloride
Monitoring and reporting
|
Apr 1, 2025 | Resolved |
|
1,1,1-Trichloroethane
Monitoring and reporting
|
Apr 1, 2025 | Resolved |
|
1,2-Dichloroethane
Monitoring and reporting
|
Apr 1, 2025 | Resolved |
|
trans-1,2-Dichloroethylene
Monitoring and reporting
|
Apr 1, 2025 | Resolved |
|
1,1-Dichloroethylene
Monitoring and reporting
|
Apr 1, 2025 | Resolved |
|
Vinyl chloride
Monitoring and reporting
|
Apr 1, 2025 | Resolved |
|
p-Dichlorobenzene
Monitoring and reporting
|
Apr 1, 2025 | Resolved |
|
o-Dichlorobenzene
Monitoring and reporting
|
Apr 1, 2025 | Resolved |
|
DICHLOROMETHANE
Monitoring and reporting
|
Apr 1, 2025 | Resolved |
|
Xylenes, Total
Monitoring and reporting
|
Apr 1, 2025 | Resolved |
|
cis-1,2-Dichloroethylene
Monitoring and reporting
|
Apr 1, 2025 | Resolved |
|
1,2,4-Trichlorobenzene
Monitoring and reporting
|
Apr 1, 2025 | Resolved |
|
Di(2-ethylhexyl) phthalate
Monitoring and reporting
|
Oct 1, 2024 | Resolved |
|
Styrene
Monitoring and reporting
|
Oct 1, 2024 | Resolved |
|
Ethylbenzene
Monitoring and reporting
|
Oct 1, 2024 | Resolved |
|
Toluene
Monitoring and reporting
|
Oct 1, 2024 | Resolved |
|
Benzene
Monitoring and reporting
|
Oct 1, 2024 | Resolved |
|
CHLOROBENZENE
Monitoring and reporting
|
Oct 1, 2024 | Resolved |
|
Tetrachloroethylene
Monitoring and reporting
|
Oct 1, 2024 | Resolved |
|
1,1,2-Trichloroethane
Monitoring and reporting
|
Oct 1, 2024 | Resolved |
|
Trichloroethylene
Monitoring and reporting
|
Oct 1, 2024 | Resolved |
|
1,2-Dichloropropane
Monitoring and reporting
|
Oct 1, 2024 | Resolved |
|
Carbon tetrachloride
Monitoring and reporting
|
Oct 1, 2024 | Resolved |
|
1,1,1-Trichloroethane
Monitoring and reporting
|
Oct 1, 2024 | Resolved |
|
1,2-Dichloroethane
Monitoring and reporting
|
Oct 1, 2024 | Resolved |
|
trans-1,2-Dichloroethylene
Monitoring and reporting
|
Oct 1, 2024 | Resolved |
|
1,1-Dichloroethylene
Monitoring and reporting
|
Oct 1, 2024 | Resolved |
|
Vinyl chloride
Monitoring and reporting
|
Oct 1, 2024 | Resolved |
|
p-Dichlorobenzene
Monitoring and reporting
|
Oct 1, 2024 | Resolved |
|
o-Dichlorobenzene
Monitoring and reporting
|
Oct 1, 2024 | Resolved |
|
DICHLOROMETHANE
Monitoring and reporting
|
Oct 1, 2024 | Resolved |
|
Xylenes, Total
Monitoring and reporting
|
Oct 1, 2024 | Resolved |
|
cis-1,2-Dichloroethylene
Monitoring and reporting
|
Oct 1, 2024 | Resolved |
|
1,2,4-Trichlorobenzene
Monitoring and reporting
|
Oct 1, 2024 | Resolved |
|
Chlorine
Monitoring and reporting
|
Aug 1, 2024 | Resolved |
|
Styrene
Monitoring and reporting
|
Jul 1, 2024 | Resolved |
|
Ethylbenzene
Monitoring and reporting
|
Jul 1, 2024 | Resolved |
|
Toluene
Monitoring and reporting
|
Jul 1, 2024 | Resolved |
|
Benzene
Monitoring and reporting
|
Jul 1, 2024 | Resolved |
|
CHLOROBENZENE
Monitoring and reporting
|
Jul 1, 2024 | Resolved |
|
Tetrachloroethylene
Monitoring and reporting
|
Jul 1, 2024 | Resolved |
|
1,1,2-Trichloroethane
Monitoring and reporting
|
Jul 1, 2024 | Resolved |
|
Trichloroethylene
Monitoring and reporting
|
Jul 1, 2024 | Resolved |
|
1,2-Dichloropropane
Monitoring and reporting
|
Jul 1, 2024 | Resolved |
|
Carbon tetrachloride
Monitoring and reporting
|
Jul 1, 2024 | Resolved |
|
1,1,1-Trichloroethane
Monitoring and reporting
|
Jul 1, 2024 | Resolved |
|
1,2-Dichloroethane
Monitoring and reporting
|
Jul 1, 2024 | Resolved |
|
trans-1,2-Dichloroethylene
Monitoring and reporting
|
Jul 1, 2024 | Resolved |
|
1,1-Dichloroethylene
Monitoring and reporting
|
Jul 1, 2024 | Resolved |
|
Vinyl chloride
Monitoring and reporting
|
Jul 1, 2024 | Resolved |
|
p-Dichlorobenzene
Monitoring and reporting
|
Jul 1, 2024 | Resolved |
|
o-Dichlorobenzene
Monitoring and reporting
|
Jul 1, 2024 | Resolved |
|
DICHLOROMETHANE
Monitoring and reporting
|
Jul 1, 2024 | Resolved |
|
Xylenes, Total
Monitoring and reporting
|
Jul 1, 2024 | Resolved |
|
cis-1,2-Dichloroethylene
Monitoring and reporting
|
Jul 1, 2024 | Resolved |
|
1,2,4-Trichlorobenzene
Monitoring and reporting
|
Jul 1, 2024 | Resolved |
|
Di(2-ethylhexyl) phthalate
Monitoring and reporting
|
Jul 1, 2024 | Resolved |
|
Di(2-ethylhexyl) phthalate
Monitoring and reporting
|
Apr 1, 2024 | Resolved |
|
Styrene
Monitoring and reporting
|
Apr 1, 2024 | Resolved |
|
Ethylbenzene
Monitoring and reporting
|
Apr 1, 2024 | Resolved |
|
Toluene
Monitoring and reporting
|
Apr 1, 2024 | Resolved |
|
Benzene
Monitoring and reporting
|
Apr 1, 2024 | Resolved |
|
CHLOROBENZENE
Monitoring and reporting
|
Apr 1, 2024 | Resolved |
|
Tetrachloroethylene
Monitoring and reporting
|
Apr 1, 2024 | Resolved |
|
1,1,2-Trichloroethane
Monitoring and reporting
|
Apr 1, 2024 | Resolved |
|
Trichloroethylene
Monitoring and reporting
|
Apr 1, 2024 | Resolved |
|
1,2-Dichloropropane
Monitoring and reporting
|
Apr 1, 2024 | Resolved |
|
Carbon tetrachloride
Monitoring and reporting
|
Apr 1, 2024 | Resolved |
|
1,1,1-Trichloroethane
Monitoring and reporting
|
Apr 1, 2024 | Resolved |
|
1,2-Dichloroethane
Monitoring and reporting
|
Apr 1, 2024 | Resolved |
|
trans-1,2-Dichloroethylene
Monitoring and reporting
|
Apr 1, 2024 | Resolved |
|
1,1-Dichloroethylene
Monitoring and reporting
|
Apr 1, 2024 | Resolved |
|
Vinyl chloride
Monitoring and reporting
|
Apr 1, 2024 | Resolved |
|
p-Dichlorobenzene
Monitoring and reporting
|
Apr 1, 2024 | Resolved |
|
o-Dichlorobenzene
Monitoring and reporting
|
Apr 1, 2024 | Resolved |
|
DICHLOROMETHANE
Monitoring and reporting
|
Apr 1, 2024 | Resolved |
|
Xylenes, Total
Monitoring and reporting
|
Apr 1, 2024 | Resolved |
|
cis-1,2-Dichloroethylene
Monitoring and reporting
|
Apr 1, 2024 | Resolved |
|
1,2,4-Trichlorobenzene
Monitoring and reporting
|
Apr 1, 2024 | Resolved |
|
Chlorine
Monitoring and reporting
|
Apr 1, 2024 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Oct 2, 2023 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Oct 2, 2021 | Resolved |
|
Public Notice
OTHER
|
Aug 27, 2021 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Jul 1, 2021 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2021 | Resolved |
|
Public Notice
OTHER
|
May 20, 2021 | Resolved |
|
Chlorine
Monitoring and reporting
|
Apr 1, 2021 | Resolved |
|
Chlorine
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
Public Notice
OTHER
|
Nov 20, 2020 | Resolved |
|
Public Notice
OTHER
|
Nov 18, 2020 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Oct 2, 2020 | Resolved |
|
Chlorine
Monitoring and reporting
|
Oct 1, 2020 | Resolved |
|
Public Notice
OTHER
|
Jul 23, 2020 | Resolved |
|
Chlorine
Monitoring and reporting
|
Jul 1, 2020 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Jul 1, 2020 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2020 | Resolved |
|
Chlorine
Monitoring and reporting
|
Apr 1, 2020 | Resolved |
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Chlorine
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Chlorine
Monitoring and reporting
|
Oct 1, 2019 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Oct 1, 2019 | Resolved |
|
Chlorine
Monitoring and reporting
|
Jul 1, 2019 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2019 | Resolved |
|
Revised Total Coliform Rule
RPT
|
May 1, 2019 | Resolved |
|
Chlorine
Monitoring and reporting
|
Apr 1, 2019 | Resolved |
|
Revised Total Coliform Rule
RPT
|
Feb 1, 2019 | Resolved |
|
Chlorine
Monitoring and reporting
|
Oct 1, 2018 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Oct 1, 2018 | Resolved |
|
Chlorine
Monitoring and reporting
|
Jul 1, 2018 | Resolved |
|
Chlorine
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Dec 1, 2017 | Resolved |
|
Chlorine
Monitoring and reporting
|
Oct 1, 2017 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Oct 1, 2017 | Resolved |
|
Chlorine
Monitoring and reporting
|
Jul 1, 2017 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2017 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Jun 1, 2017 | Resolved |
|
Chlorine
Monitoring and reporting
|
Apr 1, 2017 | Resolved |
|
Chlorine
Monitoring and reporting
|
Oct 1, 2016 | Resolved |
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Jan 1, 2016 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Jan 1, 2016 | Resolved |
Full record since 1979
EPA's records for Town of Duncan go back to 1979. Before October 19, 2016 they list 2 health-based violations (1 resolved, 1 archived by EPA without a recorded fix) and 151 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1970s | 0 | 2 |
| 1980s | 1 | 19 |
| 1990s | 0 | 23 |
| 2000s | 1 | 64 |
| 2010 to October 18, 2016 | 0 | 43 |
| October 19, 2016 to 2019 | 0 | 18 |
| 2020s | 3 | 114 |
Most recent health-based violation before October 19, 2016: Combined Uranium, began July 2009, Resolved.
Show all 2 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Combined Uranium
Contaminant limit exceeded
Measured 33 µg/L, federal limit 30 µg/L (1.1 times the limit)
|
Jul 1, 2009 | Resolved |
|
Fluoride
Contaminant limit exceeded
|
Nov 27, 1980 | Archived |
What the violations mean
Di(2-ethylhexyl) phthalate
2 incidentsTest results for Di(2-ethylhexyl) phthalate were above the federal limit (a maximum contaminant level violation).
The utility had to notify customers about each of these violations.
Groundwater Rule
1 incidentThe 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 this violation.
Where the water comes from
Town of Duncan draws water from 2 wells.
Annual water quality report
Town of Duncan 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