DES PERES, AZ · Apache County
OLD CONCHO WATER USERS Water System
Consumer Confidence Report status
OLD CONCHO WATER USERS 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 OLD CONCHO WATER USERS.
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)
- AZ0401011
- System type
- Community Water System
- Population served
- 40
- Service connections
- 31
- Ownership
- privately owned
- Water source
- groundwater (wells)
OLD CONCHO WATER USERS is one of 1,189 community water systems in Arizona in the 500 or fewer people size category, serving 40 people from groundwater.
As of August 1, 2026, its federal record holds 40 entries between 1979 and 2020, all of which EPA lists as closed. Nothing has been added since 2020.
Of the 40, 37 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
Monitoring and Reporting (DBP)
—Chlorine
April 1, 2020 – June 30, 2020
ResolvedMonitoring, Routine Major (TCR)
—Coliform (TCR)
March 1, 2010 – March 31, 2010
ResolvedMaximum Contaminant Level Violation, Single Sample
Health-basedGross Alpha, Excl. Radon and U
October 1, 1989 – December 31, 1989
ArchivedMaximum Contaminant Level Violation, Single Sample
Health-basedGross Alpha, Excl. Radon and U
August 10, 1989 – August 9, 1993
ArchivedMonitoring, Regular
—Fluoride
August 31, 1988 – August 30, 1991
ArchivedMonitoring, Regular
—Barium
August 31, 1988 – August 30, 1991
ArchivedMonitoring, Regular
—Mercury
August 31, 1988 – August 30, 1991
ArchivedMonitoring, Regular
—Selenium
August 31, 1988 – August 30, 1991
ArchivedMonitoring, Regular
—Cadmium
August 31, 1988 – August 30, 1991
ArchivedMonitoring, Regular
—Arsenic
August 31, 1988 – August 30, 1991
ArchivedMonitoring, Regular
—Chromium
August 31, 1988 – August 30, 1991
ArchivedMonitoring, Regular
—Nitrate
August 31, 1988 – August 30, 1991
ArchivedMonitoring, Regular
—Mercury
July 1, 1988 – September 30, 1988
ArchivedMonitoring, Regular
—Chromium
July 1, 1988 – September 30, 1988
ArchivedMonitoring, Regular
—Fluoride
July 1, 1988 – September 30, 1988
ArchivedMonitoring, Regular
—Selenium
July 1, 1988 – September 30, 1988
ArchivedMonitoring, Regular
—Barium
July 1, 1988 – September 30, 1988
ArchivedMonitoring, Regular
—Cadmium
July 1, 1988 – September 30, 1988
ArchivedMonitoring, Regular
—Gross Alpha, Excl. Radon and U
April 1, 1988 – June 30, 1988
ArchivedMonitoring, Regular
—Gross Alpha, Excl. Radon and U
October 1, 1987 – December 31, 1987
ArchivedMaximum Contaminant Level Violation, Single Sample
Health-basedGross Alpha, Excl. Radon and U
July 1, 1987 – September 30, 1987
ArchivedMonitoring, Regular
—Benzene
January 1, 1987 – January 1, 1992
ArchivedMonitoring, Regular
—1,2-Dichloropropane
January 1, 1987 – January 1, 1992
ArchivedMonitoring, Regular
—o-Dichlorobenzene
January 1, 1987 – January 1, 1992
ArchivedMonitoring, Regular
—DICHLOROMETHANE
January 1, 1987 – January 1, 1992
ArchivedMonitoring, Regular
—cis-1,2-Dichloroethylene
January 1, 1987 – January 1, 1992
ArchivedMonitoring, Regular
—Toluene
January 1, 1987 – January 1, 1992
ArchivedMonitoring, Regular
—Ethylbenzene
January 1, 1987 – January 1, 1992
ArchivedMonitoring, Regular
—Styrene
January 1, 1987 – January 1, 1992
ArchivedMonitoring, Regular
—1,1,1-Trichloroethane
January 1, 1987 – January 1, 1992
ArchivedMonitoring, Regular
—1,2-Dichloroethane
January 1, 1987 – January 1, 1992
ArchivedMonitoring, Regular
—trans-1,2-Dichloroethylene
January 1, 1987 – January 1, 1992
ArchivedMonitoring, Regular
—1,1-Dichloroethylene
January 1, 1987 – January 1, 1992
ArchivedMonitoring, Regular
—p-Dichlorobenzene
January 1, 1987 – January 1, 1992
ArchivedMonitoring, Regular
—Arsenic
August 2, 1985 – July 31, 1988
ArchivedMonitoring, Regular
—Gross Alpha, Excl. Radon and U
July 1, 1980 – June 30, 1984
ArchivedMonitoring, Regular
—Mercury
June 24, 1979 – June 23, 1982
ArchivedMonitoring, Regular
—Fluoride
June 24, 1979 – June 23, 1982
ArchivedMonitoring, Regular
—Barium
June 24, 1979 – June 23, 1982
ArchivedMonitoring, Regular
—Arsenic
June 24, 1979 – June 23, 1982
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, 2020 – June 30, 2020 | Monitoring and Reporting (DBP) | Chlorine | — | Resolved |
| March 1, 2010 – March 31, 2010 | Monitoring, Routine Major (TCR) | Coliform (TCR) | — | Resolved |
| October 1, 1989 – December 31, 1989 | Maximum Contaminant Level Violation, Single Sample | Gross Alpha, Excl. Radon and U | Health-based | Archived |
| August 10, 1989 – August 9, 1993 | Maximum Contaminant Level Violation, Single Sample | Gross Alpha, Excl. Radon and U | Health-based | Archived |
| August 31, 1988 – August 30, 1991 | Monitoring, Regular | Fluoride | — | Archived |
| August 31, 1988 – August 30, 1991 | Monitoring, Regular | Barium | — | Archived |
| August 31, 1988 – August 30, 1991 | Monitoring, Regular | Mercury | — | Archived |
| August 31, 1988 – August 30, 1991 | Monitoring, Regular | Selenium | — | Archived |
| August 31, 1988 – August 30, 1991 | Monitoring, Regular | Cadmium | — | Archived |
| August 31, 1988 – August 30, 1991 | Monitoring, Regular | Arsenic | — | Archived |
| August 31, 1988 – August 30, 1991 | Monitoring, Regular | Chromium | — | Archived |
| August 31, 1988 – August 30, 1991 | Monitoring, Regular | Nitrate | — | Archived |
| July 1, 1988 – September 30, 1988 | Monitoring, Regular | Mercury | — | Archived |
| July 1, 1988 – September 30, 1988 | Monitoring, Regular | Chromium | — | Archived |
| July 1, 1988 – September 30, 1988 | Monitoring, Regular | Fluoride | — | Archived |
| July 1, 1988 – September 30, 1988 | Monitoring, Regular | Selenium | — | Archived |
| July 1, 1988 – September 30, 1988 | Monitoring, Regular | Barium | — | Archived |
| July 1, 1988 – September 30, 1988 | Monitoring, Regular | Cadmium | — | Archived |
| April 1, 1988 – June 30, 1988 | Monitoring, Regular | Gross Alpha, Excl. Radon and U | — | Archived |
| October 1, 1987 – December 31, 1987 | Monitoring, Regular | Gross Alpha, Excl. Radon and U | — | Archived |
| July 1, 1987 – September 30, 1987 | Maximum Contaminant Level Violation, Single Sample | Gross Alpha, Excl. Radon and U | Health-based | Archived |
| January 1, 1987 – January 1, 1992 | Monitoring, Regular | Benzene | — | Archived |
| January 1, 1987 – January 1, 1992 | Monitoring, Regular | 1,2-Dichloropropane | — | Archived |
| January 1, 1987 – January 1, 1992 | Monitoring, Regular | o-Dichlorobenzene | — | Archived |
| January 1, 1987 – January 1, 1992 | Monitoring, Regular | DICHLOROMETHANE | — | Archived |
| January 1, 1987 – January 1, 1992 | Monitoring, Regular | cis-1,2-Dichloroethylene | — | Archived |
| January 1, 1987 – January 1, 1992 | Monitoring, Regular | Toluene | — | Archived |
| January 1, 1987 – January 1, 1992 | Monitoring, Regular | Ethylbenzene | — | Archived |
| January 1, 1987 – January 1, 1992 | Monitoring, Regular | Styrene | — | Archived |
| January 1, 1987 – January 1, 1992 | Monitoring, Regular | 1,1,1-Trichloroethane | — | Archived |
| January 1, 1987 – January 1, 1992 | Monitoring, Regular | 1,2-Dichloroethane | — | Archived |
| January 1, 1987 – January 1, 1992 | Monitoring, Regular | trans-1,2-Dichloroethylene | — | Archived |
| January 1, 1987 – January 1, 1992 | Monitoring, Regular | 1,1-Dichloroethylene | — | Archived |
| January 1, 1987 – January 1, 1992 | Monitoring, Regular | p-Dichlorobenzene | — | Archived |
| August 2, 1985 – July 31, 1988 | Monitoring, Regular | Arsenic | — | Archived |
| July 1, 1980 – June 30, 1984 | Monitoring, Regular | Gross Alpha, Excl. Radon and U | — | Archived |
| June 24, 1979 – June 23, 1982 | Monitoring, Regular | Mercury | — | Archived |
| June 24, 1979 – June 23, 1982 | Monitoring, Regular | Fluoride | — | Archived |
| June 24, 1979 – June 23, 1982 | Monitoring, Regular | Barium | — | Archived |
| June 24, 1979 – June 23, 1982 | 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
- January 2, 2026State Violation/Reminder Notice100 linked violations
- September 15, 2021State Compliance achieved195 linked violations
- July 23, 2019State Compliance achieved157 linked violations
- May 31, 1979State Othergeneral compliance action — not tied to a specific violation on record
Common questions
Is OLD CONCHO WATER USERS required to publish a Consumer Confidence Report?
- Yes. OLD CONCHO WATER USERS 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 OLD CONCHO WATER USERS’s next Consumer Confidence Report due?
- OLD CONCHO WATER USERS’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does OLD CONCHO WATER USERS have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show no open violations for OLD CONCHO WATER USERS.
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
THOMPSON, JULIANNE
314-464-4084
DES PERES, MO 63131