PlainWater
States → California

ORCHARD DALE WATER DISTRICT

PWS ID: CA1910101 · WHITTIER, California 90604

ORCHARD DALE WATER DISTRICT serves 25,000 people in WHITTIER, California using Groundwater water sources. It has 10 recorded EPA violations, including 8 health-based violations. PFAS "forever chemicals" were detected in UCMR5 testing (7 compounds found).

Water Quality Snapshot: ORCHARD DALE WATER DISTRICT

ORCHARD DALE WATER DISTRICT is a local-owned community water system that delivers drinking water to 25,000 residents in WHITTIER, California (Los Angeles County) through 4,346 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 10 total violations for this system , of which 8 (80%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 2 monitoring and reporting violations are on file. The most recent violation on record dates to 2020.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 8 violations (MCL, health-based). Under EPA's UCMR5 PFAS monitoring program, 7 PFAS compounds were detected in samples collected from this system, with a maximum reported concentration of 0.023 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. ORCHARD DALE WATER DISTRICT's 10 violations sit below 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

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

Population Served
25,000
Total Violations
10
Health-Based Violations
8
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
4,346
County
Los Angeles
School/Daycare
No
MCL Violations
8
Monitoring Violations
2
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MCL 8 2008
Lead and Copper Rule MR 2 2020

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 14 of 60 samples detected PFAS.

Contaminant Date Result MRL Status
ADONA 4/1/2025 <0.003 µg/L 0.003 µg/L Not Detected
NEtFOSAA 4/1/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFTA 4/1/2025 <0.008 µg/L 0.008 µg/L Not Detected
PFHpS 4/1/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFPeS 4/1/2025 <0.004 µg/L 0.004 µg/L Not Detected
NFDHA 4/1/2025 <0.02 µg/L 0.02 µg/L Not Detected
PFEESA 4/1/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFMBA 4/1/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFPeA 4/1/2025 0.0100 µg/L 0.003 µg/L Detected
PFMPA 4/1/2025 <0.004 µg/L 0.004 µg/L Not Detected
8:2 FTS 4/1/2025 <0.005 µg/L 0.005 µg/L Not Detected
4:2 FTS 4/1/2025 <0.003 µg/L 0.003 µg/L Not Detected
6:2 FTS 4/1/2025 <0.005 µg/L 0.005 µg/L Not Detected
lithium 4/1/2025 <9 µg/L 9 µg/L Not Detected
HFPO-DA 4/1/2025 <0.005 µg/L 0.005 µg/L Not Detected
NMeFOSAA 4/1/2025 <0.006 µg/L 0.006 µg/L Not Detected
9Cl-PF3ONS 4/1/2025 <0.002 µg/L 0.002 µg/L Not Detected
11Cl-PF3OUdS 4/1/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFUnA 4/1/2025 <0.002 µg/L 0.002 µg/L Not Detected
PFHxA 4/1/2025 0.0072 µg/L 0.003 µg/L Detected
PFDoA 4/1/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFDA 4/1/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFOA 4/1/2025 0.0099 µg/L 0.004 µg/L Detected
PFOS 4/1/2025 0.0170 µg/L 0.004 µg/L Detected
PFNA 4/1/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFHxS 4/1/2025 0.0040 µg/L 0.003 µg/L Detected
PFHpA 4/1/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFBS 4/1/2025 0.0072 µg/L 0.003 µg/L Detected
PFBA 4/1/2025 0.0088 µg/L 0.005 µg/L Detected
PFTrDA 4/1/2025 <0.007 µg/L 0.007 µg/L Not Detected
ADONA 10/30/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHpS 10/30/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFPeS 10/30/2024 <0.004 µg/L 0.004 µg/L Not Detected
NFDHA 10/30/2024 <0.02 µg/L 0.02 µg/L Not Detected
PFEESA 10/30/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFMBA 10/30/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFPeA 10/30/2024 0.0085 µg/L 0.003 µg/L Detected
PFMPA 10/30/2024 <0.004 µg/L 0.004 µg/L Not Detected
8:2 FTS 10/30/2024 <0.005 µg/L 0.005 µg/L Not Detected
4:2 FTS 10/30/2024 <0.003 µg/L 0.003 µg/L Not Detected
6:2 FTS 10/30/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFBS 10/30/2024 0.0065 µg/L 0.003 µg/L Detected
PFHpA 10/30/2024 <0.003 µg/L 0.003 µg/L Not Detected
HFPO-DA 10/30/2024 <0.005 µg/L 0.005 µg/L Not Detected
9Cl-PF3ONS 10/30/2024 <0.002 µg/L 0.002 µg/L Not Detected
11Cl-PF3OUdS 10/30/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFUnA 10/30/2024 <0.002 µg/L 0.002 µg/L Not Detected
PFHxA 10/30/2024 0.0066 µg/L 0.003 µg/L Detected
PFDoA 10/30/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFDA 10/30/2024 <0.003 µg/L 0.003 µg/L Not 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 ORCHARD DALE WATER DISTRICT.

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 CA1910101 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 ORCHARD DALE WATER DISTRICT 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
2020 Lead and Copper Rule MR 2 SDWIS / CA1910101 / 5000
2008 Coliform (TCR) MCL 8 SDWIS / CA1910101 / 3100

How ORCHARD DALE WATER DISTRICT Compares

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

Metric ORCHARD DALE WATER DISTRICT California avg Federal benchmark
Total violations 10 21.1 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 8 8.8 Indicates a contaminant exceeded a federal MCL
PFAS detection 7 compounds 64.4% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 25,000 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 ORCHARD DALE WATER DISTRICT water safe to drink? ▼
ORCHARD DALE WATER DISTRICT (PWS ID: CA1910101) has 10 recorded violations in the EPA SDWIS database. PFAS contamination has been detected in UCMR5 testing, with 7 PFAS compounds found. This system serves 25,000 people using Groundwater sources.
How many people does ORCHARD DALE WATER DISTRICT serve? ▼
ORCHARD DALE WATER DISTRICT serves 25,000 people in WHITTIER, California. It is a Local-owned system using Groundwater water sources with 4,346 service connections.
What type of violations does ORCHARD DALE WATER DISTRICT have? ▼
ORCHARD DALE WATER DISTRICT has 10 total violations: 8 health-based violations (MCL exceedances or treatment failures), 2 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in ORCHARD DALE WATER DISTRICT water? ▼
Yes. UCMR5 testing detected 7 PFAS compounds in ORCHARD DALE WATER DISTRICT's water supply: PFPeA, PFHxA, PFOA, PFOS, PFHxS, and others. PFAS are persistent "forever chemicals" that do not break down in the environment.
What water source does ORCHARD DALE WATER DISTRICT use? ▼
ORCHARD DALE WATER DISTRICT 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.

Explore PlainWater

Water in California

All systems in state
All States

Water quality by state
Contaminants

PFAS & other pollutants
Guides

Understanding water quality

Related Data for California

Environmental Data → Natural Hazards → Air Quality → Healthcare Access → Climate Data →
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.

Related

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