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PICO WD

PWS ID: CA1910125 · PICO RIVERA, California 90660

PICO WD serves 22,051 people in PICO RIVERA, California using Groundwater water sources. It has 50 recorded EPA violations, including 4 health-based violations. PFAS "forever chemicals" were detected in UCMR5 testing (9 compounds found).

Water Quality Snapshot: PICO WD

PICO WD is a local-owned community water system that delivers drinking water to 22,051 residents in PICO RIVERA, California (Los Angeles County) through 5,361 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 50 total violations for this system , of which 4 (8%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 42 monitoring and reporting violations are on file. The most recent violation on record dates to 2021.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 4 violations (MCL, health-based). Under EPA's UCMR5 PFAS monitoring program, 9 PFAS compounds were detected in samples collected from this system, with a maximum reported concentration of 0.028 ppt. PFAS are persistent synthetic chemicals linked to health effects at very low exposure levels.

Across California, EPA tracks 7,249 public water systems serving 42,404,883 people, with 153,308 cumulative violations and 63,983 health-based violations on record. About 89% of systems in the state carry at least one violation, and state-wide the average per system is 21.1 violations. PICO WD's 50 violations sit above the California average. Statewide, 447 of 694 UCMR5-tested systems have reported PFAS detections (64.4%). All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.

PFAS Detected

9 PFAS "forever chemicals" detected in testing under EPA's UCMR5 monitoring program.

Population Served
22,051
Total Violations
50
Health-Based Violations
4
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
5,361
County
Los Angeles
School/Daycare
No
MCL Violations
4
Monitoring Violations
42
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MCL 4 1993
1,2,4-Trichlorobenzene MR 2 2021
Xylenes, Total MR 2 2021
DICHLOROMETHANE MR 2 2021
o-Dichlorobenzene MR 2 2021
Vinyl chloride MR 2 2021
1,2-Dichloroethane MR 2 2021
Carbon tetrachloride MR 2 2021
1,2-Dichloropropane MR 2 2021
1,1,2-Trichloroethane MR 2 2021
CHLOROBENZENE MR 2 2021
Benzene MR 2 2021
Toluene MR 2 2021
Ethylbenzene MR 2 2021
Styrene MR 2 2021
p-Dichlorobenzene MR 2 2021
Trichloroethylene MR 2 2021
1,1-Dichloroethylene MR 2 2021
cis-1,2-Dichloroethylene MR 2 2021
1,1,1-Trichloroethane MR 2 2021
trans-1,2-Dichloroethylene MR 2 2021
Tetrachloroethylene MR 2 2021

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 57 of 240 samples detected PFAS.

Contaminant Date Result MRL Status
PFTA 9/18/2023 <0.008 µg/L 0.008 µg/L Not Detected
PFHxS 9/18/2023 0.0057 µg/L 0.003 µg/L Detected
PFHpA 9/18/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFBS 9/18/2023 0.0073 µg/L 0.003 µg/L Detected
PFHxA 9/18/2023 0.0057 µg/L 0.003 µg/L Detected
lithium 9/18/2023 <9 µg/L 9 µg/L Not Detected
NMeFOSAA 9/18/2023 <0.006 µg/L 0.006 µg/L Not Detected
PFNA 9/18/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFTrDA 9/18/2023 <0.007 µg/L 0.007 µg/L Not Detected
PFPeA 9/18/2023 0.0067 µg/L 0.003 µg/L Detected
NEtFOSAA 9/18/2023 <0.005 µg/L 0.005 µg/L Not Detected
HFPO-DA 9/18/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFHpS 9/18/2023 <0.003 µg/L 0.003 µg/L Not Detected
8:2 FTS 9/18/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFOS 9/18/2023 0.0280 µg/L 0.004 µg/L Detected
PFPeS 9/18/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFBA 9/18/2023 0.0095 µg/L 0.005 µg/L Detected
ADONA 9/18/2023 <0.003 µg/L 0.003 µg/L Not Detected
9Cl-PF3ONS 9/18/2023 <0.002 µg/L 0.002 µg/L Not Detected
11Cl-PF3OUdS 9/18/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFDA 9/18/2023 <0.003 µg/L 0.003 µg/L Not Detected
NFDHA 9/18/2023 <0.02 µg/L 0.02 µg/L Not Detected
PFOA 9/18/2023 0.0140 µg/L 0.004 µg/L Detected
PFEESA 9/18/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFDoA 9/18/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFUnA 9/18/2023 <0.002 µg/L 0.002 µg/L Not Detected
6:2 FTS 9/18/2023 <0.005 µg/L 0.005 µg/L Not Detected
4:2 FTS 9/18/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFMPA 9/18/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFMBA 9/18/2023 <0.003 µg/L 0.003 µg/L Not Detected
9Cl-PF3ONS 9/18/2023 <0.002 µg/L 0.002 µg/L Not Detected
NFDHA 9/18/2023 <0.02 µg/L 0.02 µg/L Not Detected
PFBS 9/18/2023 0.0062 µg/L 0.003 µg/L Detected
PFMBA 9/18/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFEESA 9/18/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFMPA 9/18/2023 <0.004 µg/L 0.004 µg/L Not Detected
8:2 FTS 9/18/2023 <0.005 µg/L 0.005 µg/L Not Detected
4:2 FTS 9/18/2023 <0.003 µg/L 0.003 µg/L Not Detected
6:2 FTS 9/18/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFBA 9/18/2023 0.0071 µg/L 0.005 µg/L Detected
HFPO-DA 9/18/2023 <0.005 µg/L 0.005 µg/L Not Detected
ADONA 9/18/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFPeA 9/18/2023 0.0130 µg/L 0.003 µg/L Detected
11Cl-PF3OUdS 9/18/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFUnA 9/18/2023 <0.002 µg/L 0.002 µg/L Not Detected
PFHxA 9/18/2023 0.0100 µg/L 0.003 µg/L Detected
PFDoA 9/18/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFDA 9/18/2023 0.0051 µg/L 0.003 µg/L Detected
PFOA 9/18/2023 0.0130 µg/L 0.004 µg/L Detected
PFOS 9/18/2023 0.0190 µg/L 0.004 µg/L Detected

Verify This Water System

The figures above are aggregated from EPA's public databases. To verify the underlying records — or to file a complaint, request a Consumer Confidence Report, or check current monitoring status — go directly to the federal and state regulators that enforce the Safe Drinking Water Act for PICO WD.

Federal Source of Truth

EPA SDWIS — Federal Reports

EPA's Safe Drinking Water Information System (SDWIS) holds the federal compliance record for every regulated public water system. Open the system-level report by PWS ID:

View PWS ID CA1910125 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

California Drinking Water Authority

California State Water Resources Control Board — Division of Drinking Water is the primacy agency that licenses and inspects PICO WD under EPA-delegated authority.

Open CA regulator portal

Source: California State Water Resources Control Board — Division of Drinking Water

Violation Timeline

Each row links to the EPA SDWIS public record for verification. Cross-reference the contaminant code on EPA's federal report to see violation dates, return-to-compliance status, and enforcement actions.

Year (latest) Contaminant Category Count EPA Record
2021 1,2,4-Trichlorobenzene MR 2 SDWIS / CA1910125 / 2378
2021 Xylenes, Total MR 2 SDWIS / CA1910125 / 2955
2021 DICHLOROMETHANE MR 2 SDWIS / CA1910125 / 2964
2021 o-Dichlorobenzene MR 2 SDWIS / CA1910125 / 2968
2021 Vinyl chloride MR 2 SDWIS / CA1910125 / 2976
2021 1,2-Dichloroethane MR 2 SDWIS / CA1910125 / 2980
2021 Carbon tetrachloride MR 2 SDWIS / CA1910125 / 2982
2021 1,2-Dichloropropane MR 2 SDWIS / CA1910125 / 2983
2021 1,1,2-Trichloroethane MR 2 SDWIS / CA1910125 / 2985
2021 CHLOROBENZENE MR 2 SDWIS / CA1910125 / 2989
2021 Benzene MR 2 SDWIS / CA1910125 / 2990
2021 Toluene MR 2 SDWIS / CA1910125 / 2991
2021 Ethylbenzene MR 2 SDWIS / CA1910125 / 2992
2021 Styrene MR 2 SDWIS / CA1910125 / 2996
2021 p-Dichlorobenzene MR 2 SDWIS / CA1910125 / 2969

How PICO WD Compares

Cross-reference this system's record against state averages and the federal MCL framework for context.

Metric PICO WD California avg Federal benchmark
Total violations 50 21.1 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 4 8.8 Indicates a contaminant exceeded a federal MCL
PFAS detection 9 compounds 64.4% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 22,051 5,850 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 7,249 regulated public water systems in California.

Federal MCL reference — Safe Drinking Water Act thresholds ▼
Contaminant Federal MCL / Action Level Note
Lead 0 mg/L (Action Level: 0.015 mg/L) Lead and Copper Rule treatment technique
Arsenic 0.010 mg/L (10 ppb) Health-based MCL since 2006
Total Coliform Treatment technique (RTCR) Indicator organism, monitoring trigger
PFOA / PFOS (PFAS) 4.0 ppt each (final 2024 rule) Compliance deadline 2029
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is PICO WD water safe to drink? ▼
PICO WD (PWS ID: CA1910125) has 50 recorded violations in the EPA SDWIS database. PFAS contamination has been detected in UCMR5 testing, with 9 PFAS compounds found. This system serves 22,051 people using Groundwater sources.
How many people does PICO WD serve? ▼
PICO WD serves 22,051 people in PICO RIVERA, California. It is a Local-owned system using Groundwater water sources with 5,361 service connections.
What type of violations does PICO WD have? ▼
PICO WD has 50 total violations: 4 health-based violations (MCL exceedances or treatment failures), 42 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in PICO WD water? ▼
Yes. UCMR5 testing detected 9 PFAS compounds in PICO WD's water supply: PFHxS, PFBS, PFHxA, PFPeA, PFOS, and others. PFAS are persistent "forever chemicals" that do not break down in the environment.
What water source does PICO WD use? ▼
PICO WD uses Groundwater as its primary water source. It is classified as a Community Water System (CWS), serving residential populations year-round.
Where does this data come from? ▼
All data comes from the EPA Safe Drinking Water Information System (SDWIS) and the UCMR5 PFAS monitoring program. SDWIS tracks compliance for all public water systems regulated under the Safe Drinking Water Act.

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Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025. PFAS data from EPA UCMR5 monitoring program (2023-2025). This data is provided for informational purposes only.

Read our methodology — how this data is sourced, computed, and verified.

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Data sourced from $official public datasets. See our methodology for details. Retrieved and formatted by Kiznis Studio Editorial