Public water system record
Wenden DWID
Serves Wenden, La Paz County, AZ · 360 people served
Federal records show 12 health-based violations and 21 monitoring/reporting issues for Wenden DWID in the last ten years. The most serious issue in this window was a resolved Haloacetic Acids (HAA5) violation.
System profile
Source water
Groundwater
ZIP
85357
EPA system ID
AZ0415023
- Health-based violations, last 10 years
- 12
- Resolved
- 12
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 21
Key facts
- Wenden DWID draws water from 2 wells.
- Highest measured level in the last 10 years: Total Trihalomethanes (TTHMs), 0.58 mg/L, federal limit 0.08 mg/L (7.3 times the limit), 2019.
- Most recent formal enforcement: compliance order (no penalty) by Arizona, November 2012.
- Record on file since 1990, with 42 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 244 service lines.
Check whether Wenden 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 |
|---|---|---|---|---|
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.141 mg/L, federal limit 0.06 mg/L (2.4 times the limit)
|
220 | Apr 1, 2020 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.205 mg/L, federal limit 0.08 mg/L (2.6 times the limit)
|
220 | Apr 1, 2020 | Resolved | No |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.212 mg/L, federal limit 0.06 mg/L (3.5 times the limit)
|
220 | Jan 1, 2020 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.305 mg/L, federal limit 0.08 mg/L (3.8 times the limit)
|
220 | Jan 1, 2020 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.305 mg/L, federal limit 0.08 mg/L (3.8 times the limit)
|
220 | Oct 1, 2019 | Resolved | No |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.212 mg/L, federal limit 0.06 mg/L (3.5 times the limit)
|
220 | Oct 1, 2019 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.58 mg/L, federal limit 0.08 mg/L (7.3 times the limit)
|
220 | Jul 1, 2019 | Resolved | No |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.42 mg/L, federal limit 0.06 mg/L (7 times the limit)
|
220 | Jul 1, 2019 | Resolved | No |
|
Arsenic
Contaminant limit exceeded
Measured 0.011 mg/L, federal limit 0.01 mg/L (1.1 times the limit)
|
330 | Oct 1, 2017 | Resolved | No |
|
Arsenic
Contaminant limit exceeded
Measured 0.011 mg/L, federal limit 0.01 mg/L (1.1 times the limit)
|
330 | Jul 1, 2017 | Resolved | No |
|
Arsenic
Contaminant limit exceeded
Measured 0.011 mg/L, federal limit 0.01 mg/L (1.1 times the limit)
|
330 | Apr 1, 2017 | Resolved | No |
|
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 |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Revised Total Coliform Rule
RPT
|
Nov 1, 2025 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Oct 2, 2025 | Resolved |
|
Public Notice
OTHER
|
May 24, 2023 | Resolved |
|
Public Notice
OTHER
|
Apr 2, 2023 | Resolved |
|
Public Notice
OTHER
|
Apr 2, 2022 | Resolved |
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Public Notice
OTHER
|
Dec 20, 2019 | Resolved |
|
Public Notice
OTHER
|
Dec 20, 2019 | Resolved |
|
Public Notice
OTHER
|
Sep 4, 2019 | Resolved |
|
Public Notice
OTHER
|
Sep 4, 2019 | Resolved |
|
Barium
Monitoring and reporting
|
Jan 1, 2015 | Resolved |
|
Chromium (total)
Monitoring and reporting
|
Jan 1, 2015 | Resolved |
|
Beryllium, Total
Monitoring and reporting
|
Jan 1, 2015 | Resolved |
|
Mercury
Monitoring and reporting
|
Jan 1, 2015 | Resolved |
|
Thallium, Total
Monitoring and reporting
|
Jan 1, 2015 | Resolved |
|
Selenium
Monitoring and reporting
|
Jan 1, 2015 | Resolved |
|
Antimony, Total
Monitoring and reporting
|
Jan 1, 2015 | Resolved |
|
Cadmium
Monitoring and reporting
|
Jan 1, 2015 | Resolved |
|
CYANIDE
Monitoring and reporting
|
Jan 1, 2015 | Resolved |
|
Nickel
Monitoring and reporting
|
Jan 1, 2015 | Resolved |
Full record since 1990
EPA's records for Wenden DWID go back to 1990. Before October 19, 2016 they list 42 health-based violations (42 resolved) and 108 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 4 | 22 |
| 2000s | 18 | 63 |
| 2010 to October 18, 2016 | 20 | 23 |
| October 19, 2016 to 2019 | 8 | 4 |
| 2020s | 4 | 7 |
Most recent health-based violation before October 19, 2016: Arsenic, began April 2016, Resolved.
Show all 42 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Arsenic
Contaminant limit exceeded
Measured 0.011 mg/L, federal limit 0.01 mg/L (1.1 times the limit)
|
Apr 1, 2016 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.011 mg/L, federal limit 0.01 mg/L (1.1 times the limit)
|
Jan 1, 2016 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.013 mg/L, federal limit 0.01 mg/L (1.3 times the limit)
|
Oct 1, 2015 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.013 mg/L, federal limit 0.01 mg/L (1.3 times the limit)
|
Jul 1, 2015 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.013 mg/L, federal limit 0.01 mg/L (1.3 times the limit)
|
Apr 1, 2015 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.013 mg/L, federal limit 0.01 mg/L (1.3 times the limit)
|
Jan 1, 2015 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.013 mg/L, federal limit 0.01 mg/L (1.3 times the limit)
|
Oct 1, 2014 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.013 mg/L, federal limit 0.01 mg/L (1.3 times the limit)
|
Jul 1, 2014 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.014 mg/L, federal limit 0.01 mg/L (1.4 times the limit)
|
Apr 1, 2014 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.014 mg/L, federal limit 0.01 mg/L (1.4 times the limit)
|
Jan 1, 2014 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.014 mg/L, federal limit 0.01 mg/L (1.4 times the limit)
|
Oct 1, 2013 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.015 mg/L, federal limit 0.01 mg/L (1.5 times the limit)
|
Jul 1, 2013 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.014 mg/L, federal limit 0.01 mg/L (1.4 times the limit)
|
Apr 1, 2013 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.013 mg/L, federal limit 0.01 mg/L (1.3 times the limit)
|
Jan 1, 2013 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.013 mg/L, federal limit 0.01 mg/L (1.3 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)
|
Jan 1, 2012 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.011 mg/L, federal limit 0.01 mg/L (1.1 times the limit)
|
Oct 1, 2010 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.012 mg/L, federal limit 0.01 mg/L (1.2 times the limit)
|
Jul 1, 2010 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.011 mg/L, federal limit 0.01 mg/L (1.1 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)
|
Jan 1, 2010 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.011 mg/L, federal limit 0.01 mg/L (1.1 times the limit)
|
Oct 1, 2009 | Resolved |
|
Fluoride
Contaminant limit exceeded
Measured 4.1 mg/L, federal limit 4 mg/L (at or just above the limit)
|
Jul 1, 2009 | Resolved |
|
Fluoride
Contaminant limit exceeded
Measured 4.2 mg/L, federal limit 4 mg/L (1.1 times the limit)
|
Apr 1, 2009 | Resolved |
|
Fluoride
Contaminant limit exceeded
Measured 4.3 mg/L, federal limit 4 mg/L (1.1 times the limit)
|
Jan 1, 2009 | Resolved |
|
Fluoride
Contaminant limit exceeded
Measured 4.4 mg/L, federal limit 4 mg/L (1.1 times the limit)
|
Oct 1, 2008 | Resolved |
|
Fluoride
Contaminant limit exceeded
Measured 4.4 mg/L, federal limit 4 mg/L (1.1 times the limit)
|
Jul 1, 2008 | Resolved |
|
Fluoride
Contaminant limit exceeded
Measured 4.6 mg/L, federal limit 4 mg/L (1.2 times the limit)
|
Apr 1, 2008 | Resolved |
|
Fluoride
Contaminant limit exceeded
Measured 4.8 mg/L, federal limit 4 mg/L (1.2 times the limit)
|
Jan 1, 2004 | Resolved |
|
Fluoride
Contaminant limit exceeded
Measured 5.5 mg/L, federal limit 4 mg/L (1.4 times the limit)
|
Oct 1, 2003 | Resolved |
|
Fluoride
Contaminant limit exceeded
Measured 4.5 mg/L, federal limit 4 mg/L (1.1 times the limit)
|
Apr 1, 2003 | Resolved |
|
Fluoride
Contaminant limit exceeded
Measured 4.4 mg/L, federal limit 4 mg/L (1.1 times the limit)
|
Jan 1, 2003 | Resolved |
|
Fluoride
Contaminant limit exceeded
Measured 4.7 mg/L, federal limit 4 mg/L (1.2 times the limit)
|
Apr 1, 2002 | Resolved |
|
Fluoride
Contaminant limit exceeded
Measured 4.5 mg/L, federal limit 4 mg/L (1.1 times the limit)
|
Jan 1, 2002 | Resolved |
|
Fluoride
Contaminant limit exceeded
Measured 4.3 mg/L, federal limit 4 mg/L (1.1 times the limit)
|
Jul 1, 2001 | Resolved |
|
Fluoride
Contaminant limit exceeded
Measured 4.7 mg/L, federal limit 4 mg/L (1.2 times the limit)
|
Jan 1, 2001 | Resolved |
|
Fluoride
Contaminant limit exceeded
Measured 4.8 mg/L, federal limit 4 mg/L (1.2 times the limit)
|
Oct 1, 2000 | Resolved |
|
Fluoride
Contaminant limit exceeded
Measured 4.5 mg/L, federal limit 4 mg/L (1.1 times the limit)
|
Jul 1, 2000 | Resolved |
|
Fluoride
Contaminant limit exceeded
Measured 4.6 mg/L, federal limit 4 mg/L (1.2 times the limit)
|
Jan 1, 2000 | Resolved |
|
Fluoride
Contaminant limit exceeded
Measured 6.6 mg/L, federal limit 4 mg/L (1.7 times the limit)
|
Oct 1, 1999 | Resolved |
|
Fluoride
Contaminant limit exceeded
Measured 5 mg/L, federal limit 4 mg/L (1.3 times the limit)
|
Apr 1, 1999 | Resolved |
|
Fluoride
Contaminant limit exceeded
Measured 4.3 mg/L, federal limit 4 mg/L (1.1 times the limit)
|
Jan 1, 1999 | Resolved |
|
Fluoride
Contaminant limit exceeded
Measured 5.3 mg/L, federal limit 4 mg/L (1.3 times the limit)
|
Oct 1, 1998 | Resolved |
Enforcement actions
Arizona regulators took 1 formal enforcement action against Wenden DWID in 2012. The most recent was a compliance order (no penalty) in November 2012.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Nov 20, 2012 | Arizona | Compliance order (no penalty) | 28 violations (25 health-based): Arsenic |
What the violations mean
Haloacetic Acids (HAA5)
4 incidentsHaloacetic acid byproducts exceeded the federal limit
Long-term exposure to HAAs may increase cancer risk
Total Trihalomethanes (TTHMs)
4 incidentsDisinfection byproduct levels exceeded the federal limit
Long-term TTHM exposure may increase bladder cancer risk
Arsenic
4 incidentsArsenic exceeded the federal limit
Long-term arsenic exposure is linked to cancer and cardiovascular effects
Where the water comes from
Wenden DWID draws water from 2 wells.
Annual water quality report
Wenden 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.
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 Wenden DWID 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 Arizona.
Certified drinking water labs by state EPA guidance for private wells