TURLOCK, CA · Stanislaus County
OASIS INVESTMENTS Water System
Consumer Confidence Report status
OASIS INVESTMENTS 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 OASIS INVESTMENTS.
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 California’s official records. Always confirm current status with California before making decisions based on this information.
System facts
- System ID (PWSID)
- CA5000263
- System type
- Community Water System
- Population served
- 75
- Service connections
- 31
- Ownership
- privately owned
- Water source
- groundwater (wells)
OASIS INVESTMENTS is one of 3,951 community water systems in California in the 500 or fewer people size category, serving 75 people from groundwater.
As of August 1, 2026, its federal record holds 3 entries between 1980 and 1982, all of which EPA lists as closed. Nothing has been added since 1982.
Of the 3, 2 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 the Radionuclides and Revised Rad Rule and inorganic chemicals.
Violation history
Maximum Contaminant Level Violation, Single Sample
Health-basedNitrate
April 29, 1982 – April 28, 1983
ArchivedMonitoring, Regular
—Gross Alpha, Excl. Radon and U
October 1, 1981 – September 30, 1982
ArchivedMonitoring, Regular
—Gross Alpha, Excl. Radon and U
October 30, 1980 – October 29, 1981
Archived
Archived closed in EPA's records (typically due to age or a data correction)
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| April 29, 1982 – April 28, 1983 | Maximum Contaminant Level Violation, Single Sample | Nitrate | Health-based | Archived |
| October 1, 1981 – September 30, 1982 | Monitoring, Regular | Gross Alpha, Excl. Radon and U | — | Archived |
| October 30, 1980 – October 29, 1981 | Monitoring, Regular | Gross Alpha, Excl. Radon and U | — | Archived |
Archived closed in EPA's records (typically due to age or a data correction)
Enforcement actions
- January 10, 2023State Administrative/Compliance Order without penalty issued11 linked violations
Common questions
Is OASIS INVESTMENTS required to publish a Consumer Confidence Report?
- Yes. OASIS INVESTMENTS 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 OASIS INVESTMENTS’s next Consumer Confidence Report due?
- OASIS INVESTMENTS’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does OASIS INVESTMENTS have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show no open violations for OASIS INVESTMENTS.
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
NICKELS, TERRY
209-581-2707
TURLOCK, CA 95381