Public water system record
Epcor - Chaparral City
Serves Fountain Hills and Scottsdale, Maricopa County, AZ · 26,026 people served
Federal records show 1 health-based violation and 13 monitoring/reporting issues for Epcor - Chaparral City 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
- 1
- Resolved
- 1
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 13
Key facts
- Epcor - Chaparral City draws water from 2 wells and 1 surface water intake.
- Highest measured level in the last 10 years: Arsenic, 13 µg/L, federal limit 10 µg/L (1.3 times the limit), 2019.
- Record on file since 1980, with 8 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 7 unknown out of 14,636 service lines.
Check whether Epcor - Chaparral City 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 13 µg/L, federal limit 10 µg/L (1.3 times the limit)
|
330 | Jan 1, 2019 | Resolved | No |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Surface Water Treatment Rule
Monitoring and reporting
|
Aug 1, 2024 | Resolved |
|
2,4-D
Monitoring and reporting
|
Jul 1, 2023 | Resolved |
|
Arsenic
Monitoring and reporting
|
Apr 1, 2023 | Resolved |
|
Arsenic
Monitoring and reporting
|
Apr 1, 2023 | Resolved |
|
Fluoride
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
CARBON, TOTAL
Monitoring and reporting
|
Jan 1, 2019 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
E. coli
Monitoring and reporting
|
Apr 1, 2018 | Resolved |
|
Cryptosporidium
Monitoring and reporting
|
Apr 1, 2018 | Resolved |
|
Turbidity
Monitoring and reporting
|
Apr 1, 2018 | Resolved |
|
Fluoride
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
Antimony, Total
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
Antimony, Total
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
Nitrate
Monitoring and reporting
|
Jan 1, 2016 | Resolved |
Full record since 1980
EPA's records for Epcor - Chaparral City go back to 1980. Before October 19, 2016 they list 8 health-based violations (5 resolved, 3 archived by EPA without a recorded fix) and 394 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1980s | 3 | 0 |
| 1990s | 1 | 9 |
| 2000s | 2 | 380 |
| 2010 to October 18, 2016 | 2 | 5 |
| October 19, 2016 to 2019 | 1 | 8 |
| 2020s | 0 | 4 |
Most recent health-based violation before October 19, 2016: Total Trihalomethanes (TTHMs), began April 2012, Resolved.
Show all 8 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.081 mg/L, federal limit 0.08 mg/L (at or just above the limit)
|
Apr 1, 2012 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jun 1, 2011 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Sep 1, 2005 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Mar 1, 2000 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jun 1, 1998 | Resolved |
|
Fluoride
Contaminant limit exceeded
|
Mar 26, 1981 | Archived |
|
Fluoride
Contaminant limit exceeded
|
Mar 26, 1981 | Archived |
|
Fluoride
Contaminant limit exceeded
|
May 15, 1980 | Archived |
What the violations mean
Arsenic
1 incidentArsenic exceeded the federal limit
Long-term arsenic exposure is linked to cancer and cardiovascular effects
Where the water comes from
Epcor - Chaparral City draws water from 2 wells and 1 surface water intake.
Annual water quality report
Epcor - Chaparral City 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 10,000 or more people must mail or deliver the report to every customer, and from 2027 they must send it twice a year.
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