MAYER, AZ · Yavapai County
HUMBOLDT WATER SYSTEM Water System
Consumer Confidence Report status
HUMBOLDT WATER SYSTEM 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 HUMBOLDT WATER SYSTEM.
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)
- AZ0413052
- System type
- Community Water System
- Population served
- 825
- Service connections
- 414
- Ownership
- privately owned
- Water source
- groundwater (wells)
HUMBOLDT WATER SYSTEM is one of 272 community water systems in Arizona in the 501 to 3,300 people size category, serving 825 people from groundwater.
As of August 1, 2026, its federal record holds 16 entries between 1986 and 2014, all of which EPA lists as closed. Nothing has been added since 2014.
Of the 16, 15 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 inorganic chemicals, volatile organic chemicals, and the Radionuclides and Revised Rad Rule.
Violation history
Maximum Contaminant Level Violation, Average
Health-basedArsenic
April 1, 2014 – June 30, 2014
ResolvedMonitoring, Regular
—Gross Alpha, Excl. Radon and U
July 1, 1989 – September 30, 1989
ArchivedMonitoring, Regular
—Chromium
April 30, 1989 – April 29, 1992
ArchivedMonitoring, Regular
—Chromium
January 1, 1989 – March 31, 1989
ArchivedMonitoring, Regular
—Barium
January 1, 1989 – March 31, 1989
ArchivedMonitoring, Regular
—Cadmium
January 1, 1989 – March 31, 1989
ArchivedMonitoring, Regular
—Mercury
January 1, 1989 – March 31, 1989
ArchivedMonitoring, Regular
—Nitrate
January 1, 1989 – March 31, 1989
ArchivedMonitoring, Regular
—Selenium
January 1, 1989 – March 31, 1989
ArchivedMonitoring, Regular
—Fluoride
January 1, 1989 – March 31, 1989
ArchivedMonitoring, Regular
—o-Dichlorobenzene
January 1, 1987 – January 1, 1992
ArchivedMonitoring, Regular
—1,1,2-Trichloroethane
January 1, 1987 – January 1, 1992
ArchivedMonitoring, Regular
—Ethylbenzene
January 1, 1987 – January 1, 1992
ArchivedMonitoring, Regular
—Trichloroethylene
January 1, 1987 – January 1, 1992
ArchivedMonitoring, Regular
—1,1,1-Trichloroethane
January 1, 1987 – January 1, 1992
ArchivedMonitoring, Regular
—Arsenic
March 29, 1986 – March 27, 1989
Archived
Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| April 1, 2014 – June 30, 2014 | Maximum Contaminant Level Violation, Average | Arsenic | Health-based | Resolved |
| July 1, 1989 – September 30, 1989 | Monitoring, Regular | Gross Alpha, Excl. Radon and U | — | Archived |
| April 30, 1989 – April 29, 1992 | Monitoring, Regular | Chromium | — | Archived |
| January 1, 1989 – March 31, 1989 | Monitoring, Regular | Chromium | — | Archived |
| January 1, 1989 – March 31, 1989 | Monitoring, Regular | Barium | — | Archived |
| January 1, 1989 – March 31, 1989 | Monitoring, Regular | Cadmium | — | Archived |
| January 1, 1989 – March 31, 1989 | Monitoring, Regular | Mercury | — | Archived |
| January 1, 1989 – March 31, 1989 | Monitoring, Regular | Nitrate | — | Archived |
| January 1, 1989 – March 31, 1989 | Monitoring, Regular | Selenium | — | Archived |
| January 1, 1989 – March 31, 1989 | Monitoring, Regular | Fluoride | — | Archived |
| January 1, 1987 – January 1, 1992 | Monitoring, Regular | o-Dichlorobenzene | — | Archived |
| January 1, 1987 – January 1, 1992 | Monitoring, Regular | 1,1,2-Trichloroethane | — | Archived |
| January 1, 1987 – January 1, 1992 | Monitoring, Regular | Ethylbenzene | — | Archived |
| January 1, 1987 – January 1, 1992 | Monitoring, Regular | Trichloroethylene | — | Archived |
| January 1, 1987 – January 1, 1992 | Monitoring, Regular | 1,1,1-Trichloroethane | — | Archived |
| March 29, 1986 – March 27, 1989 | Monitoring, Regular | Arsenic | — | Archived |
Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)
Enforcement actions
- August 30, 2004State Formal Notice of Violation issued819 linked violations
Common questions
Is HUMBOLDT WATER SYSTEM required to publish a Consumer Confidence Report?
- Yes. HUMBOLDT WATER SYSTEM 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 HUMBOLDT WATER SYSTEM’s next Consumer Confidence Report due?
- HUMBOLDT WATER SYSTEM’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does HUMBOLDT WATER SYSTEM have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show no open violations for HUMBOLDT WATER SYSTEM.
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
MCLEAN, STUART
928-925-4837
MAYER, AZ 86333