Rancheritos Mwc

Published drinking-water records and contacts for Rancheritos Mwc. System CA3600200. Review sources and dates; not a real-time water assessment.

System ID: CA3600200
State or territory: CA
Published population served: 487
System type (source code): CWS

Published records and dates

PFAS / lithium (EPA UCMR 5): 180 — 2024-06-03 – 2024-12-02
Lead and copper monitoring summaries: 5 — 2015-01-01 – 2027-12-31
California DDW laboratory results: 41 — 2026-01-21 – 2026-06-25

Missing records here do not mean the provider did not test. Published records are not a real-time assessment of your tap water.

Published testing results

Selected recent records are shown below. Different sampling locations and dates are not interchangeable. These excerpts are not a complete testing history.

“<” means below the stated reporting limit, not zero. A reported measurement alone is not a safety verdict. Read an example

EPA UCMR 5 — most recent imported sample per substance
Substance	Published result	Reporting limit	Sample date	Sampling location
11Cl-PF3OUdS	< 0.005 µg/L	0.005 µg/L	2024-12-02	RANCHERITOS MWC Well 3 / 03
4:2 FTS	< 0.003 µg/L	0.003 µg/L	2024-12-02	RANCHERITOS MWC Well 1 / 01
6:2 FTS	< 0.005 µg/L	0.005 µg/L	2024-12-02	RANCHERITOS MWC Well 2 / 02
8:2 FTS	< 0.005 µg/L	0.005 µg/L	2024-12-02	RANCHERITOS MWC Well 2 / 02
9Cl-PF3ONS	< 0.002 µg/L	0.002 µg/L	2024-12-02	RANCHERITOS MWC Well 2 / 02
ADONA	< 0.003 µg/L	0.003 µg/L	2024-12-02	RANCHERITOS MWC Well 1 / 01
HFPO-DA	< 0.005 µg/L	0.005 µg/L	2024-12-02	RANCHERITOS MWC Well 1 / 01
NEtFOSAA	< 0.005 µg/L	0.005 µg/L	2024-12-02	RANCHERITOS MWC Well 2 / 02
NFDHA	< 0.02 µg/L	0.02 µg/L	2024-12-02	RANCHERITOS MWC Well 1 / 01
NMeFOSAA	< 0.006 µg/L	0.006 µg/L	2024-12-02	RANCHERITOS MWC Well 3 / 03
PFBA	< 0.005 µg/L	0.005 µg/L	2024-12-02	RANCHERITOS MWC Well 1 / 01
PFBS	< 0.003 µg/L	0.003 µg/L	2024-12-02	RANCHERITOS MWC Well 3 / 03
PFDA	< 0.003 µg/L	0.003 µg/L	2024-12-02	RANCHERITOS MWC Well 1 / 01
PFDoA	< 0.003 µg/L	0.003 µg/L	2024-12-02	RANCHERITOS MWC Well 3 / 03
PFEESA	< 0.003 µg/L	0.003 µg/L	2024-12-02	RANCHERITOS MWC Well 3 / 03
PFHpA	< 0.003 µg/L	0.003 µg/L	2024-12-02	RANCHERITOS MWC Well 1 / 01
PFHpS	< 0.003 µg/L	0.003 µg/L	2024-12-02	RANCHERITOS MWC Well 1 / 01
PFHxA	< 0.003 µg/L	0.003 µg/L	2024-12-02	RANCHERITOS MWC Well 1 / 01
PFHxS	< 0.003 µg/L	0.003 µg/L	2024-12-02	RANCHERITOS MWC Well 1 / 01
PFMBA	< 0.003 µg/L	0.003 µg/L	2024-12-02	RANCHERITOS MWC Well 3 / 03
PFMPA	< 0.004 µg/L	0.004 µg/L	2024-12-02	RANCHERITOS MWC Well 1 / 01
PFNA	< 0.004 µg/L	0.004 µg/L	2024-12-02	RANCHERITOS MWC Well 3 / 03
PFOA	< 0.004 µg/L	0.004 µg/L	2024-12-02	RANCHERITOS MWC Well 1 / 01
PFOS	< 0.004 µg/L	0.004 µg/L	2024-12-02	RANCHERITOS MWC Well 3 / 03
PFPeA	< 0.003 µg/L	0.003 µg/L	2024-12-02	RANCHERITOS MWC Well 2 / 02
PFPeS	< 0.004 µg/L	0.004 µg/L	2024-12-02	RANCHERITOS MWC Well 1 / 01
PFTA	< 0.008 µg/L	0.008 µg/L	2024-12-02	RANCHERITOS MWC Well 1 / 01
PFTrDA	< 0.007 µg/L	0.007 µg/L	2024-12-02	RANCHERITOS MWC Well 1 / 01
PFUnA	< 0.002 µg/L	0.002 µg/L	2024-12-02	RANCHERITOS MWC Well 3 / 03
lithium	< 9 µg/L	9 µg/L	2024-12-02	RANCHERITOS MWC Well 1 / 01

Download all EPA UCMR 5 records (CSV)

Lead and copper: 90th-percentile summaries

These describe a monitoring period across sampled locations, not the result at your home. How to read the 90th percentile

Eight most recent imported monitoring summaries
Substance	Published 90th percentile	Monitoring period	Source quarter
Lead (PB90)	0 mg/L	2025-01-01 – 2027-12-31	2026Q3
Lead (PB90)	0.002 mg/L	2022-01-01 – 2024-12-31	2026Q3
Lead (PB90)	0 mg/L	2019-01-01 – 2021-12-31	2026Q3
Lead (PB90)	0 mg/L	2016-01-01 – 2018-12-31	2026Q3
Lead (PB90)	0 mg/L	2015-01-01 – 2017-12-31	2026Q3

Twelve most recent imported state laboratory records
Substance	Published result	Sample date	Location / source
COPPER, FREE	< 50.000000000 UG/L	2026-06-25	LCR Tap Sample / California DDW laboratory results
LEAD	< 5.000000000 UG/L	2026-06-25	LCR Tap Sample / California DDW laboratory results
COPPER, FREE	100 UG/L	2026-06-25	LCR Tap Sample / California DDW laboratory results
LEAD	< 5.000000000 UG/L	2026-06-25	LCR Tap Sample / California DDW laboratory results
IRON	< 100.000000000 UG/L	2026-04-27	WELL 01 / California DDW laboratory results
CHROMIUM	< 10.000000000 UG/L	2026-04-27	WELL 01 / California DDW laboratory results
TURBIDITY	0.72 NTU	2026-04-27	WELL 01 / California DDW laboratory results
COLOR	< 3.000000000 UNITS	2026-04-27	WELL 01 / California DDW laboratory results
CONDUCTIVITY @ 25 C UMHOS/CM	490 UMHO/CM	2026-01-21	WELL 02 / California DDW laboratory results
POTASSIUM	3.3 MG/L	2026-01-21	WELL 02 / California DDW laboratory results
COPPER, FREE	< 50.000000000 UG/L	2026-01-21	WELL 02 / California DDW laboratory results
IRON	380 UG/L	2026-01-21	WELL 01 / California DDW laboratory results

State sampling points can include untreated water. Publisher qualifiers and units are retained; consult the full source notes before interpreting a record.

Download state records with source notes (CSV)

Published compliance history

6 imported records. Status is as recorded in the source; historical records are not current advisories. Missing records do not establish that no violations occurred.

Twenty most recent imported compliance records
Rule / record	Period	Recorded status	Health-based (EPA classification)	Source quarter
Nitrate Rule / Monitoring, Regular	2022-01-01 – 2022-12-31	Resolved	No	2026Q3
Nitrate Rule / Monitoring, Regular	2021-01-01 – 2023-12-31	Archived	No	2026Q3
Radionuclides and Revised Rad Rule / Monitoring, Regular	1981-10-01 – 1982-09-30	Archived	No	2026Q3
Radionuclides and Revised Rad Rule / Monitoring, Regular	1980-10-30 – 1981-10-29	Archived	No	2026Q3
Miscellaneous Other Rules / Notification, Public	1980-07-30 – 1980-08-29	Archived	No	2026Q3
Miscellaneous Other Rules / Notification, Public	1979-10-30 – 1979-11-29	Archived	No	2026Q3

Source dates and refresh checks

A refresh check is not a sample date. Publication periods, sample dates and checks are shown separately.

EPA SDWIS lead/copper summaries and service areas — source period: — – —; last checked: 2026-10-17
EPA SDWIS contacts and compliance records — source period: — – —; last checked: 2026-10-17
EPA UCMR 5 sample results — source period: 2023-01-03 – 2026-06-17; last checked: 2026-10-17
California DDW laboratory results — last successful check: 2026-10-18

Administrative contact (EPA filing)

Murena, Beth: 760-247-3730

An administrative filing contact may not be a customer-service line. Confirm current contact details with the provider.

Official state resources · How to read these records