Coachella Water Authority

Published drinking-water records and contacts for Coachella Water Authority. System CA3310007. Review sources and dates; not a real-time water assessment.

System ID: CA3310007
State or territory: CA
Published population served: 43590
System type (source code): CWS

Published records and dates

PFAS / lithium (EPA UCMR 5): 330 — 2023-08-16 – 2024-02-28
Lead and copper monitoring summaries: 29 — 1992-01-01 – 2023-12-31
California DDW laboratory results: 249 — 2026-01-20 – 2026-04-15

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	2024-02-28	Well 17 Treatment / EP4
4:2 FTS	< 0.003 µg/L	0.003 µg/L	2024-02-28	Well 12 Treatment / EP2
6:2 FTS	< 0.005 µg/L	0.005 µg/L	2024-02-28	Well 11 Treatment / EP1
8:2 FTS	< 0.005 µg/L	0.005 µg/L	2024-02-28	Well 19 Treatment / EP6
9Cl-PF3ONS	< 0.002 µg/L	0.002 µg/L	2024-02-28	Well 19 Treatment / EP6
ADONA	< 0.003 µg/L	0.003 µg/L	2024-02-28	Well 12 Treatment / EP2
HFPO-DA	< 0.005 µg/L	0.005 µg/L	2024-02-28	Well 17 Treatment / EP4
NEtFOSAA	< 0.005 µg/L	0.005 µg/L	2024-02-28	Well 19 Treatment / EP6
NFDHA	< 0.02 µg/L	0.02 µg/L	2024-02-28	Well 17 Treatment / EP4
NMeFOSAA	< 0.006 µg/L	0.006 µg/L	2024-02-28	Well 11 Treatment / EP1
PFBA	< 0.005 µg/L	0.005 µg/L	2024-02-28	Well 12 Treatment / EP2
PFBS	< 0.003 µg/L	0.003 µg/L	2024-02-28	Well 11 Treatment / EP1
PFDA	< 0.003 µg/L	0.003 µg/L	2024-02-28	Well 18 Treatment / EP5
PFDoA	< 0.003 µg/L	0.003 µg/L	2024-02-28	Well 17 Treatment / EP4
PFEESA	< 0.003 µg/L	0.003 µg/L	2024-02-28	Well 17 Treatment / EP4
PFHpA	< 0.003 µg/L	0.003 µg/L	2024-02-28	Well 19 Treatment / EP6
PFHpS	< 0.003 µg/L	0.003 µg/L	2024-02-28	Well 12 Treatment / EP2
PFHxA	< 0.003 µg/L	0.003 µg/L	2024-02-28	Well 12 Treatment / EP2
PFHxS	< 0.003 µg/L	0.003 µg/L	2024-02-28	Well 18 Treatment / EP5
PFMBA	< 0.003 µg/L	0.003 µg/L	2024-02-28	Well 19 Treatment / EP6
PFMPA	< 0.004 µg/L	0.004 µg/L	2024-02-28	Well 19 Treatment / EP6
PFNA	< 0.004 µg/L	0.004 µg/L	2024-02-28	Well 11 Treatment / EP1
PFOA	< 0.004 µg/L	0.004 µg/L	2024-02-28	Well 17 Treatment / EP4
PFOS	< 0.004 µg/L	0.004 µg/L	2024-02-28	Well 18 Treatment / EP5
PFPeA	< 0.003 µg/L	0.003 µg/L	2024-02-28	Well 18 Treatment / EP5
PFPeS	< 0.004 µg/L	0.004 µg/L	2024-02-28	Well 18 Treatment / EP5
PFTA	< 0.008 µg/L	0.008 µg/L	2024-02-28	Well 18 Treatment / EP5
PFTrDA	< 0.007 µg/L	0.007 µg/L	2024-02-28	Well 12 Treatment / EP2
PFUnA	< 0.002 µg/L	0.002 µg/L	2024-02-28	Well 18 Treatment / EP5
lithium	< 9 µg/L	9 µg/L	2024-02-28	Well 18 Treatment / EP5

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	2021-01-01 – 2023-12-31	2026Q3
Lead (PB90)	0 mg/L	2018-01-01 – 2020-12-31	2026Q3
Lead (PB90)	0 mg/L	2015-01-01 – 2017-12-31	2026Q3
Lead (PB90)	0 mg/L	2012-01-01 – 2014-12-31	2026Q3
Lead (PB90)	0 mg/L	2009-01-01 – 2011-12-31	2026Q3
Lead (PB90)	0 mg/L	2006-01-01 – 2008-12-31	2026Q3
Lead (PB90)	0.005 mg/L	2005-01-01 – 2005-12-31	2026Q3
Lead (PB90)	0.005 mg/L	2005-01-01 – 2005-12-31	2026Q3

Twelve most recent imported state laboratory records
Substance	Published result	Sample date	Location / source
PERFLUOROTETRADECANOIC ACID (PFTA)	< 1.700000000 NG/L	2026-04-15	WELL 19 / California DDW laboratory results
PERFLUOROHEXANOIC ACID (PFHXA)	< 1.800000000 NG/L	2026-04-15	WELL 18 / California DDW laboratory results
11CL-PF3OUDS	< 1.800000000 NG/L	2026-04-15	WELL 18 / California DDW laboratory results
HFPO-DA	< 1.800000000 NG/L	2026-04-15	WELL 17 / California DDW laboratory results
ADONA	< 1.800000000 NG/L	2026-04-15	WELL 18 / California DDW laboratory results
HFPO-DA	< 1.800000000 NG/L	2026-04-15	WELL 18 / California DDW laboratory results
PERFLUOROHEXANE SULFONIC ACID (PFHxS)	< 1.800000000 NG/L	2026-04-15	WELL 17 / California DDW laboratory results
ADONA	< 2.000000000 NG/L	2026-04-15	WELL 11 / California DDW laboratory results
11CL-PF3OUDS	< 2.000000000 NG/L	2026-04-15	WELL 12 / California DDW laboratory results
PERFLUOROUNDECANOIC ACID (PFUNA)	< 2.000000000 NG/L	2026-04-15	WELL 11 / California DDW laboratory results
11CL-PF3OUDS	< 2.000000000 NG/L	2026-04-15	WELL 11 / California DDW laboratory results
PERFLUOROHEXANE SULFONIC ACID (PFHxS)	< 2.000000000 NG/L	2026-04-15	WELL 11 / 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

4 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
Ground Water Rule / Monitoring, Source Water (GWR)	2025-02-19 – —	Resolved	No	2026Q3
Revised Total Coliform Rule / Monitoring, Routine (RTCR)	2024-11-01 – 2024-11-30	Resolved	No	2026Q3
Revised Total Coliform Rule / Monitoring, Routine (RTCR)	2017-02-01 – 2017-02-28	Resolved	No	2026Q3
Miscellaneous Other Rules / Notification, Public	1989-11-01 – 1989-11-30	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)

Estrada, Castulo: 760-702-1277

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