DES PERES, AZ · Yuma County
CS ANTELOPE WATER COMPANY Water System
Consumer Confidence Report status
CS ANTELOPE WATER COMPANY 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 CS ANTELOPE WATER COMPANY.
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)
- AZ0414001
- System type
- Community Water System
- Population served
- 163
- Service connections
- 65
- Ownership
- privately owned
- Water source
- surface water (rivers, lakes, or reservoirs)
CS ANTELOPE WATER COMPANY is one of 1,189 community water systems in Arizona in the 500 or fewer people size category, serving 163 people from surface water.
As of August 1, 2026, its federal record holds 73 entries between 1980 and 2025, all of which EPA lists as closed.
Of the 73, 71 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, synthetic organic chemicals, and volatile organic chemicals.
Violation history
Public Notification Violation for NPDWR Violation
—Public Notice
October 17, 2025 – March 27, 2026
ResolvedMonitoring, Turbidity (Enhanced SWTR)
—Interim Enhanced Surface Water Treatment Rule
December 1, 2022 – December 31, 2022
ResolvedMonitoring of Treatment (SWTR-Filter)
—Surface Water Treatment Rule
November 1, 2022 – November 30, 2022
ResolvedMonitoring and Reporting (DBP)
—Chlorine
October 1, 2022 – December 31, 2022
ResolvedMonitoring, Turbidity (Enhanced SWTR)
—Interim Enhanced Surface Water Treatment Rule
August 1, 2022 – August 31, 2022
ResolvedMonitoring and Reporting (DBP)
—Chlorine
October 1, 2020 – December 31, 2020
ResolvedMonitoring and Reporting (DBP)
—Chlorine
April 1, 2019 – June 30, 2019
ResolvedMonitoring, Routine Major (TCR)
—Coliform (TCR)
November 1, 2013 – November 30, 2013
ResolvedConsumer Confidence Report Inadequate Reporting
—Consumer Confidence Rule
October 1, 2010 – June 17, 2011
ResolvedMonitoring, Routine Major (TCR)
—Coliform (TCR)
April 1, 2008 – April 30, 2008
ResolvedMonitoring and Reporting (DBP)
—TTHM
January 1, 2008 – December 31, 2008
ResolvedMonitoring, Regular
—Nitrate
April 1, 2001 – June 30, 2001
ResolvedMonitoring, Regular
—Cadmium
May 31, 1991 – May 30, 1992
ArchivedMonitoring, Regular
—Mercury
May 31, 1991 – May 30, 1992
ArchivedMonitoring, Regular
—Selenium
May 31, 1991 – May 30, 1992
ArchivedMonitoring, Regular
—Nitrate
May 31, 1991 – May 30, 1992
ArchivedMonitoring, Regular
—2,4,5-TP
August 31, 1990 – August 30, 1993
ArchivedMonitoring, Regular
—Endrin
August 31, 1990 – August 30, 1993
ArchivedMonitoring, Regular
—BHC-GAMMA
August 31, 1990 – August 30, 1993
ArchivedMonitoring, Regular
—Methoxychlor
August 31, 1990 – August 30, 1993
ArchivedMonitoring, Regular
—Toxaphene
August 31, 1990 – August 30, 1993
ArchivedMonitoring, Regular
—2,4-D
August 31, 1990 – August 30, 1993
ArchivedMonitoring, Regular
—Cadmium
May 31, 1989 – May 30, 1990
ArchivedMonitoring, Regular
—Nitrate
May 31, 1989 – May 30, 1990
ArchivedMonitoring, Regular
—Mercury
May 31, 1989 – May 30, 1990
ArchivedMonitoring, Regular
—Selenium
May 31, 1989 – May 30, 1990
ArchivedMonitoring, Regular
—Chromium
May 31, 1989 – May 30, 1990
ArchivedMonitoring, Regular
—Selenium
January 1, 1989 – March 31, 1989
ArchivedMonitoring, Regular
—Nitrate
January 1, 1989 – March 31, 1989
ArchivedMonitoring, Regular
—Mercury
January 1, 1989 – March 31, 1989
ArchivedMonitoring, Regular
—Fluoride
January 1, 1989 – March 31, 1989
ArchivedMonitoring, Regular
—Chromium
January 1, 1989 – March 31, 1989
ArchivedMonitoring, Regular
—Cadmium
January 1, 1989 – March 31, 1989
ArchivedMonitoring, Regular
—Barium
January 1, 1989 – March 31, 1989
ArchivedMonitoring, Regular
—Arsenic
February 4, 1988 – February 2, 1989
ArchivedMonitoring, Regular
—Methoxychlor
September 1, 1987 – August 30, 1990
ArchivedMonitoring, Regular
—2,4,5-TP
September 1, 1987 – August 30, 1990
ArchivedMonitoring, Regular
—Toxaphene
September 1, 1987 – August 30, 1990
ArchivedMonitoring, Regular
—Endrin
September 1, 1987 – August 30, 1990
ArchivedMonitoring, Regular
—BHC-GAMMA
September 1, 1987 – August 30, 1990
ArchivedMonitoring, Regular
—1,1-Dichloroethylene
January 1, 1987 – January 1, 1992
ArchivedMonitoring, Regular
—1,2-Dichloroethane
January 1, 1987 – January 1, 1992
ArchivedMonitoring, Regular
—Trichloroethylene
January 1, 1987 – January 1, 1992
ArchivedMonitoring, Regular
—Tetrachloroethylene
January 1, 1987 – January 1, 1992
ArchivedMonitoring, Regular
—CHLOROBENZENE
January 1, 1987 – January 1, 1992
ArchivedMonitoring, Regular
—Benzene
January 1, 1987 – January 1, 1992
ArchivedMonitoring, Regular
—Ethylbenzene
January 1, 1987 – January 1, 1992
ArchivedMonitoring, Regular
—Toluene
January 1, 1987 – January 1, 1992
ArchivedMonitoring, Regular
—o-Dichlorobenzene
January 1, 1987 – January 1, 1992
ArchivedMonitoring, Regular
—p-Dichlorobenzene
January 1, 1987 – January 1, 1992
ArchivedMonitoring, Regular
—Cadmium
June 25, 1984 – June 24, 1985
ArchivedMonitoring, Regular
—Barium
June 25, 1984 – June 24, 1985
ArchivedMonitoring, Regular
—Arsenic
June 25, 1984 – June 24, 1985
ArchivedMonitoring, Regular
—Mercury
June 25, 1984 – June 24, 1985
ArchivedMonitoring, Regular
—Fluoride
June 25, 1984 – June 24, 1985
ArchivedMonitoring, Regular
—Chromium
June 25, 1984 – June 24, 1985
ArchivedMonitoring, Regular
—Selenium
June 25, 1984 – June 24, 1985
ArchivedMonitoring, Regular
—Nitrate
June 25, 1984 – June 24, 1985
ArchivedMonitoring, Regular
—Mercury
June 25, 1982 – June 24, 1983
ArchivedMonitoring, Regular
—Nitrate
June 25, 1982 – June 24, 1983
ArchivedMonitoring, Regular
—Barium
June 25, 1982 – June 24, 1983
ArchivedMonitoring, Regular
—Cadmium
June 25, 1982 – June 24, 1983
ArchivedMonitoring, Regular
—Chromium
June 25, 1982 – June 24, 1983
ArchivedMonitoring, Regular
—Arsenic
June 25, 1982 – June 24, 1983
ArchivedMonitoring, Regular
—Cadmium
June 25, 1981 – June 24, 1982
ArchivedMonitoring, Regular
—Barium
June 25, 1981 – June 24, 1982
ArchivedMonitoring, Regular
—Arsenic
June 25, 1981 – June 24, 1982
ArchivedMonitoring, Regular
—Mercury
June 25, 1981 – June 24, 1982
ArchivedMonitoring, Regular
—Selenium
June 25, 1981 – June 24, 1982
ArchivedMonitoring, Regular
—Gross Alpha, Excl. Radon and U
July 1, 1980 – June 30, 1984
ArchivedMonitoring, Check/Repeat/Confirmation
—Fluoride
June 24, 1980 – July 23, 1980
ArchivedMonitoring, Check/Repeat/Confirmation
—Arsenic
June 24, 1980 – July 23, 1980
ArchivedMonitoring, Check/Repeat/Confirmation
—Mercury
June 24, 1980 – July 23, 1980
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 |
|---|---|---|---|---|
| October 17, 2025 – March 27, 2026 | Public Notification Violation for NPDWR Violation | Public Notice | — | Resolved |
| December 1, 2022 – December 31, 2022 | Monitoring, Turbidity (Enhanced SWTR) | Interim Enhanced Surface Water Treatment Rule | — | Resolved |
| November 1, 2022 – November 30, 2022 | Monitoring of Treatment (SWTR-Filter) | Surface Water Treatment Rule | — | Resolved |
| October 1, 2022 – December 31, 2022 | Monitoring and Reporting (DBP) | Chlorine | — | Resolved |
| August 1, 2022 – August 31, 2022 | Monitoring, Turbidity (Enhanced SWTR) | Interim Enhanced Surface Water Treatment Rule | — | Resolved |
| October 1, 2020 – December 31, 2020 | Monitoring and Reporting (DBP) | Chlorine | — | Resolved |
| April 1, 2019 – June 30, 2019 | Monitoring and Reporting (DBP) | Chlorine | — | Resolved |
| November 1, 2013 – November 30, 2013 | Monitoring, Routine Major (TCR) | Coliform (TCR) | — | Resolved |
| October 1, 2010 – June 17, 2011 | Consumer Confidence Report Inadequate Reporting | Consumer Confidence Rule | — | Resolved |
| April 1, 2008 – April 30, 2008 | Monitoring, Routine Major (TCR) | Coliform (TCR) | — | Resolved |
| January 1, 2008 – December 31, 2008 | Monitoring and Reporting (DBP) | TTHM | — | Resolved |
| April 1, 2001 – June 30, 2001 | Monitoring, Regular | Nitrate | — | Resolved |
| May 31, 1991 – May 30, 1992 | Monitoring, Regular | Cadmium | — | Archived |
| May 31, 1991 – May 30, 1992 | Monitoring, Regular | Mercury | — | Archived |
| May 31, 1991 – May 30, 1992 | Monitoring, Regular | Selenium | — | Archived |
| May 31, 1991 – May 30, 1992 | Monitoring, Regular | Nitrate | — | Archived |
| August 31, 1990 – August 30, 1993 | Monitoring, Regular | 2,4,5-TP | — | Archived |
| August 31, 1990 – August 30, 1993 | Monitoring, Regular | Endrin | — | Archived |
| August 31, 1990 – August 30, 1993 | Monitoring, Regular | BHC-GAMMA | — | Archived |
| August 31, 1990 – August 30, 1993 | Monitoring, Regular | Methoxychlor | — | Archived |
| August 31, 1990 – August 30, 1993 | Monitoring, Regular | Toxaphene | — | Archived |
| August 31, 1990 – August 30, 1993 | Monitoring, Regular | 2,4-D | — | Archived |
| May 31, 1989 – May 30, 1990 | Monitoring, Regular | Cadmium | — | Archived |
| May 31, 1989 – May 30, 1990 | Monitoring, Regular | Nitrate | — | Archived |
| May 31, 1989 – May 30, 1990 | Monitoring, Regular | Mercury | — | Archived |
| May 31, 1989 – May 30, 1990 | Monitoring, Regular | Selenium | — | Archived |
| May 31, 1989 – May 30, 1990 | Monitoring, Regular | Chromium | — | Archived |
| January 1, 1989 – March 31, 1989 | Monitoring, Regular | Selenium | — | Archived |
| January 1, 1989 – March 31, 1989 | Monitoring, Regular | Nitrate | — | Archived |
| January 1, 1989 – March 31, 1989 | Monitoring, Regular | Mercury | — | Archived |
| January 1, 1989 – March 31, 1989 | Monitoring, Regular | Fluoride | — | Archived |
| January 1, 1989 – March 31, 1989 | Monitoring, Regular | Chromium | — | Archived |
| January 1, 1989 – March 31, 1989 | Monitoring, Regular | Cadmium | — | Archived |
| January 1, 1989 – March 31, 1989 | Monitoring, Regular | Barium | — | Archived |
| February 4, 1988 – February 2, 1989 | Monitoring, Regular | Arsenic | — | Archived |
| September 1, 1987 – August 30, 1990 | Monitoring, Regular | Methoxychlor | — | Archived |
| September 1, 1987 – August 30, 1990 | Monitoring, Regular | 2,4,5-TP | — | Archived |
| September 1, 1987 – August 30, 1990 | Monitoring, Regular | Toxaphene | — | Archived |
| September 1, 1987 – August 30, 1990 | Monitoring, Regular | Endrin | — | Archived |
| September 1, 1987 – August 30, 1990 | Monitoring, Regular | BHC-GAMMA | — | Archived |
| January 1, 1987 – January 1, 1992 | Monitoring, Regular | 1,1-Dichloroethylene | — | Archived |
| January 1, 1987 – January 1, 1992 | Monitoring, Regular | 1,2-Dichloroethane | — | Archived |
| January 1, 1987 – January 1, 1992 | Monitoring, Regular | Trichloroethylene | — | Archived |
| January 1, 1987 – January 1, 1992 | Monitoring, Regular | Tetrachloroethylene | — | Archived |
| January 1, 1987 – January 1, 1992 | Monitoring, Regular | CHLOROBENZENE | — | Archived |
| January 1, 1987 – January 1, 1992 | Monitoring, Regular | Benzene | — | Archived |
| January 1, 1987 – January 1, 1992 | Monitoring, Regular | Ethylbenzene | — | Archived |
| January 1, 1987 – January 1, 1992 | Monitoring, Regular | Toluene | — | Archived |
| January 1, 1987 – January 1, 1992 | Monitoring, Regular | o-Dichlorobenzene | — | Archived |
| January 1, 1987 – January 1, 1992 | Monitoring, Regular | p-Dichlorobenzene | — | Archived |
| June 25, 1984 – June 24, 1985 | Monitoring, Regular | Cadmium | — | Archived |
| June 25, 1984 – June 24, 1985 | Monitoring, Regular | Barium | — | Archived |
| June 25, 1984 – June 24, 1985 | Monitoring, Regular | Arsenic | — | Archived |
| June 25, 1984 – June 24, 1985 | Monitoring, Regular | Mercury | — | Archived |
| June 25, 1984 – June 24, 1985 | Monitoring, Regular | Fluoride | — | Archived |
| June 25, 1984 – June 24, 1985 | Monitoring, Regular | Chromium | — | Archived |
| June 25, 1984 – June 24, 1985 | Monitoring, Regular | Selenium | — | Archived |
| June 25, 1984 – June 24, 1985 | Monitoring, Regular | Nitrate | — | Archived |
| June 25, 1982 – June 24, 1983 | Monitoring, Regular | Mercury | — | Archived |
| June 25, 1982 – June 24, 1983 | Monitoring, Regular | Nitrate | — | Archived |
| June 25, 1982 – June 24, 1983 | Monitoring, Regular | Barium | — | Archived |
| June 25, 1982 – June 24, 1983 | Monitoring, Regular | Cadmium | — | Archived |
| June 25, 1982 – June 24, 1983 | Monitoring, Regular | Chromium | — | Archived |
| June 25, 1982 – June 24, 1983 | Monitoring, Regular | Arsenic | — | Archived |
| June 25, 1981 – June 24, 1982 | Monitoring, Regular | Cadmium | — | Archived |
| June 25, 1981 – June 24, 1982 | Monitoring, Regular | Barium | — | Archived |
| June 25, 1981 – June 24, 1982 | Monitoring, Regular | Arsenic | — | Archived |
| June 25, 1981 – June 24, 1982 | Monitoring, Regular | Mercury | — | Archived |
| June 25, 1981 – June 24, 1982 | Monitoring, Regular | Selenium | — | Archived |
| July 1, 1980 – June 30, 1984 | Monitoring, Regular | Gross Alpha, Excl. Radon and U | — | Archived |
| June 24, 1980 – July 23, 1980 | Monitoring, Check/Repeat/Confirmation | Fluoride | — | Archived |
| June 24, 1980 – July 23, 1980 | Monitoring, Check/Repeat/Confirmation | Arsenic | — | Archived |
| June 24, 1980 – July 23, 1980 | Monitoring, Check/Repeat/Confirmation | Mercury | — | Archived |
Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)
Enforcement actions
- March 27, 2026State Compliance achieved25 linked violations
- October 31, 2025State Public Notification requested54 linked violations
- September 19, 2022State Violation/Reminder Notice39 linked violations
- June 16, 2021State Public Notification received20 linked violations
- April 4, 2006State Compliance achieved77 linked violations
- September 24, 1980State Othergeneral compliance action — not tied to a specific violation on record
- March 25, 1980State Other1 linked violation
Common questions
Is CS ANTELOPE WATER COMPANY required to publish a Consumer Confidence Report?
- Yes. CS ANTELOPE WATER COMPANY 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 CS ANTELOPE WATER COMPANY’s next Consumer Confidence Report due?
- CS ANTELOPE WATER COMPANY’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does CS ANTELOPE WATER COMPANY have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show no open violations for CS ANTELOPE WATER COMPANY.
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
BOBKO, JASON
480-903-2515
DES PERES, MO 63131