GRAND CANYON, AZ · Coconino County
GRAND CANYON NATIONAL PARK Water System
Consumer Confidence Report status
GRAND CANYON NATIONAL PARK must publish a Consumer Confidence Report — the annual drinking water quality report covering calendar year 2026 — by July 1, 2027.
As of August 1, 2026, EPA's federal records show no open violations for GRAND CANYON NATIONAL PARK.
Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed August 1, 2026. This is a record-keeping and public-information tool — it does not replace Arizona’s official records. Always confirm current status with Arizona before making decisions based on this information.
System facts
- System ID (PWSID)
- AZ0403702
- System type
- Community Water System
- Population served
- 16,590
- Service connections
- 630
- Ownership
- federal government
- Water source
- groundwater (wells)
GRAND CANYON NATIONAL PARK is one of 67 community water systems in Arizona in the 10,001 to 100,000 people size category, serving 16,590 people from groundwater.
As of August 1, 2026, its federal record holds 11 entries between 2000 and 2025, all of which EPA lists as closed.
Of the 11, 8 are monitoring and reporting requirements — the category that accounts for about four in five of all violations in EPA's national dataset — rather than findings about the water itself. The record involves volatile organic chemicals, the Total Coliform Rules, and the Stage 1 Disinfectants and Disinfection Byproducts Rule.
Violation history
Public Notification Violation for NPDWR Violation
—Public Notice
September 2, 2025 – January 29, 2026
ResolvedMonitoring, Regular
—trans-1,2-Dichloroethylene
April 1, 2025 – June 30, 2025
ResolvedMonitoring, Regular
—Xylenes, Total
April 1, 2025 – June 30, 2025
ResolvedMonitoring, Routine (RTCR)
—Revised Total Coliform Rule
December 1, 2023 – December 31, 2023
ResolvedTreatment Technique (SWTR and GWR)
Health-basedGroundwater Rule
June 1, 2022 – June 30, 2022
ResolvedConsumer Confidence Report Complete Failure to Report
—Consumer Confidence Rule
July 1, 2013 – July 9, 2013
ResolvedMonitoring and Reporting (DBP)
—Chlorine
April 1, 2011 – June 30, 2011
ResolvedMonitoring and Reporting (DBP)
—Chlorine
January 1, 2011 – March 31, 2011
ResolvedMonitoring, Regular
—Arsenic
January 1, 2009 – December 31, 2017
ResolvedMonitoring, Routine Minor (TCR)
—Coliform (TCR)
June 1, 2006 – June 30, 2006
ResolvedMonitoring, Regular
—Endothall
January 1, 2000 – June 14, 2000
Resolved
Resolved addressed and confirmed by the state
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| September 2, 2025 – January 29, 2026 | Public Notification Violation for NPDWR Violation | Public Notice | — | Resolved |
| April 1, 2025 – June 30, 2025 | Monitoring, Regular | trans-1,2-Dichloroethylene | — | Resolved |
| April 1, 2025 – June 30, 2025 | Monitoring, Regular | Xylenes, Total | — | Resolved |
| December 1, 2023 – December 31, 2023 | Monitoring, Routine (RTCR) | Revised Total Coliform Rule | — | Resolved |
| June 1, 2022 – June 30, 2022 | Treatment Technique (SWTR and GWR) | Groundwater Rule | Health-based | Resolved |
| July 1, 2013 – July 9, 2013 | Consumer Confidence Report Complete Failure to Report | Consumer Confidence Rule | — | Resolved |
| April 1, 2011 – June 30, 2011 | Monitoring and Reporting (DBP) | Chlorine | — | Resolved |
| January 1, 2011 – March 31, 2011 | Monitoring and Reporting (DBP) | Chlorine | — | Resolved |
| January 1, 2009 – December 31, 2017 | Monitoring, Regular | Arsenic | — | Resolved |
| June 1, 2006 – June 30, 2006 | Monitoring, Routine Minor (TCR) | Coliform (TCR) | — | Resolved |
| January 1, 2000 – June 14, 2000 | Monitoring, Regular | Endothall | — | Resolved |
Resolved addressed and confirmed by the state
Enforcement actions
- July 23, 2025State Violation/Reminder Notice34 linked violations
- July 23, 2025State Public Notification requested38 linked violations
- May 20, 2022State Violation/Reminder Notice22 linked violations
- March 28, 2019State Violation/Reminder Notice36 linked violations
- February 20, 2018State Intentional no-action55 linked violations
- December 6, 2006State Compliance achieved9 linked violations
- December 6, 2006State Compliance achieved31 linked violations
- December 6, 2006State Compliance achieved9 linked violations
- December 6, 2006State Compliance achieved13 linked violations
- December 31, 1996Federal Compliance achieved1 linked violation
- September 30, 1980State Othergeneral compliance action — not tied to a specific violation on record
Common questions
Is GRAND CANYON NATIONAL PARK required to publish a Consumer Confidence Report?
- Yes. GRAND CANYON NATIONAL PARK is a community water system, and federal rules (40 CFR 141 Subpart O) require every community water system to publish a Consumer Confidence Report each year.
When is GRAND CANYON NATIONAL PARK’s next Consumer Confidence Report due?
- GRAND CANYON NATIONAL PARK’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does GRAND CANYON NATIONAL PARK have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show no open violations for GRAND CANYON NATIONAL PARK.
What is a Consumer Confidence Report?
- A Consumer Confidence Report (CCR) is the annual drinking water quality report that community water systems must provide to the people they serve. It lists the contaminants detected in the system’s water during the year, where the water comes from, and how the results compare with federal limits. EPA’s revised CCR rule takes effect January 1, 2027, and the first reports in the new format are due July 1, 2027.
Contact
STONE, TREACY
Phone not on record
GRAND CANYON, AZ 86023