Richgrove Community Services District

Published drinking-water records and contacts for Richgrove Community Services District. System CA5410024. Review sources and dates; not a real-time water assessment.

System ID: CA5410024
State or territory: CA
Published population served: 1617
System type (source code): CWS

Published records and dates

Lead and copper monitoring summaries: 25 — 1994-01-01 – 2022-12-31
California DDW laboratory results: 96 — 2026-04-29 – 2026-06-16

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

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	2020-01-01 – 2022-12-31	2026Q3
Lead (PB90)	0 mg/L	2017-01-01 – 2019-12-31	2026Q3
Lead (PB90)	0 mg/L	2014-01-01 – 2016-12-31	2026Q3
Lead (PB90)	0.00011 mg/L	2010-01-01 – 2012-12-31	2026Q3
Lead (PB90)	0 mg/L	2007-01-01 – 2009-12-31	2026Q3
Lead (PB90)	0 mg/L	2002-01-01 – 2004-12-31	2026Q3
Lead (PB90)	0.005 mg/L	2004-01-01 – 2004-12-31	2026Q3
Lead (PB90)	0.001 mg/L	2004-01-01 – 2004-12-31	2026Q3

Twelve most recent imported state laboratory records
Substance	Published result	Sample date	Location / source
1,2,3-TRICHLOROPROPANE	0.017 UG/L	2026-06-16	WELL 06 - BEFORE_NITRATE&TCP-BLEND / California DDW laboratory results
CHROMIUM, HEX	2.5 UG/L	2026-06-16	WELL 06 - BEFORE_NITRATE&TCP-BLEND / California DDW laboratory results
1,2,3-TRICHLOROPROPANE	< 0.005000000 UG/L	2026-06-16	WELL 04 - RAW / California DDW laboratory results
ARSENIC	5 UG/L	2026-06-16	WELL 04 - RAW / California DDW laboratory results
CHROMIUM, HEX	0.5 UG/L	2026-06-16	WELL 04 - RAW / California DDW laboratory results
ARSENIC	12 UG/L	2026-06-16	WELL 06 - BEFORE_NITRATE&TCP-BLEND / California DDW laboratory results
1,2-DIBROMO-3-CHLOROPROPANE	< 0.010000000 UG/L	2026-06-12	WELL 06 - BEFORE_NITRATE&TCP-BLEND / California DDW laboratory results
ETHYLENE DIBROMIDE	< 0.020000000 UG/L	2026-06-12	WELL 06 - BEFORE_NITRATE&TCP-BLEND / California DDW laboratory results
SILICA	12 MG/L	2026-06-12	WELL 06 - BEFORE_NITRATE&TCP-BLEND / California DDW laboratory results
NITRATE	< 0.100000000 MG/L	2026-06-12	WELL 06 - BEFORE_NITRATE&TCP-BLEND / California DDW laboratory results
SILICA	34 MG/L	2026-06-12	WELL 04 - RAW / California DDW laboratory results
NITRATE	0.76 MG/L	2026-06-12	WELL 04 - RAW / 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

63 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
Lead and Copper Rule / Follow-up Or Routine LCR Tap M/R	2025-10-01 – —	Addressed	No	2026Q3
Nitrate Rule / Maximum Contaminant Level Violation, Single Sample	2025-10-01 – 2025-12-31	Archived	Yes	2026Q3
Nitrate Rule / Maximum Contaminant Level Violation, Single Sample	2025-07-01 – 2025-09-30	Archived	Yes	2026Q3
Consumer Confidence Rule / Consumer Confidence Report Complete Failure to Report	2025-07-01 – —	Addressed	No	2026Q3
Nitrate Rule / Maximum Contaminant Level Violation, Single Sample	2025-06-01 – 2025-06-30	Archived	Yes	2026Q3
Nitrate Rule / Monitoring, Regular	2025-01-01 – 2025-12-31	Archived	No	2026Q3
Lead and Copper Rule Revisions / LSL Inventory	2024-10-17 – —	Unaddressed	Yes	2026Q3
Lead and Copper Rule Revisions / LSL Reporting	2024-10-17 – —	Unaddressed	No	2026Q3
Nitrate Rule / Monitoring, Regular	2024-01-01 – 2024-12-31	Archived	No	2026Q3
Stage 2 Disinfectants and Disinfection Byproducts Rule / Monitoring and Reporting (DBP)	2023-01-01 – 2023-12-31	Archived	No	2026Q3
Arsenic Rule / Monitoring, Regular	2022-09-30 – 2025-06-23	Archived	No	2026Q3
Inorganic Chemicals / Monitoring, Regular	2022-09-30 – 2025-06-23	Archived	No	2026Q3
Inorganic Chemicals / Monitoring, Regular	2022-09-30 – 2025-06-23	Archived	No	2026Q3
Inorganic Chemicals / Monitoring, Regular	2022-09-30 – 2025-06-23	Archived	No	2026Q3
Inorganic Chemicals / Monitoring, Regular	2022-09-30 – 2025-06-23	Archived	No	2026Q3
Inorganic Chemicals / Monitoring, Regular	2022-09-30 – 2025-06-23	Archived	No	2026Q3
Inorganic Chemicals / Monitoring, Regular	2022-09-30 – 2025-06-23	Archived	No	2026Q3
Nitrate Rule / Monitoring, Regular	2022-09-30 – 2025-06-23	Archived	No	2026Q3
Inorganic Chemicals / Monitoring, Regular	2022-09-30 – 2025-06-23	Archived	No	2026Q3
Inorganic Chemicals / Monitoring, Regular	2022-09-30 – 2025-06-23	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)

Paniagua, Diego: 661-720-9297

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