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Hoopa Valley-Wide System

PWS ID: 090605126 · Hoopa, 09 95546

Hoopa Valley-Wide System serves 3,500 people in Hoopa, 09 using Surface Water water sources. It has 209 recorded EPA violations, including 16 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: Hoopa Valley-Wide System

Hoopa Valley-Wide System is a native american-owned community water system that delivers drinking water to 3,500 residents in Hoopa, 09 through 1,241 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 209 total violations for this system , of which 16 (8%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 123 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 Surface Water Treatment Rule, recorded in 14 violations (TT, health-based). This system was sampled under EPA's UCMR5 PFAS monitoring program and no PFAS compounds were detected above the minimum reporting level.

Across 09, EPA tracks 323 public water systems serving 555,721 people, with 48,296 cumulative violations and 3,354 health-based violations on record. About 97% of systems in the state carry at least one violation, and state-wide the average per system is 149.5 violations. Hoopa Valley-Wide System's 209 violations sit above the 09 average. Statewide, 30 of 41 UCMR5-tested systems have reported PFAS detections (73.2%). All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.

Population Served
3,500
Total Violations
209
Health-Based Violations
16
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Native American
Connections
1,241
School/Daycare
No
MCL Violations
2
Monitoring Violations
123
Treatment Tech Violations
14

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Surface Water Treatment Rule TT 14 1999
Coliform (TCR) MR 10 2013
Nitrate MR 4 2021
Consumer Confidence Rule Other 4 2005
Arsenic MR 2 2009
Barium MR 2 2009
Cadmium MR 2 2009
Chromium MR 2 2009
Fluoride MR 2 2009
Mercury MR 2 2009
Selenium MR 2 2009
Beryllium, Total MR 2 2009
Thallium, Total MR 2 2009
Endrin MR 2 2001
BHC-GAMMA MR 2 2001
Methoxychlor MR 2 2001
Toxaphene MR 2 2001
Diquat MR 2 2001
Endothall MR 2 2001
Glyphosate MR 2 2001
OXAMYL MR 2 2001
Simazine MR 2 2001
Di(2-ethylhexyl) phthalate MR 2 2001
Picloram MR 2 2001
Dinoseb MR 2 2001
Hexachlorocyclopentadiene MR 2 2001
LASSO MR 2 2001
Heptachlor MR 2 2001
Heptachlor epoxide MR 2 2001
2,4,5-TP MR 2 2001

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 0 of 120 samples detected PFAS.

Contaminant Date Result MRL Status
8:2 FTS 8/5/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFHpS 8/5/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFPeS 8/5/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFEESA 8/5/2024 <0.003 µg/L 0.003 µg/L Not Detected
6:2 FTS 8/5/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFBA 8/5/2024 <0.005 µg/L 0.005 µg/L Not Detected
HFPO-DA 8/5/2024 <0.005 µg/L 0.005 µg/L Not Detected
ADONA 8/5/2024 <0.003 µg/L 0.003 µg/L Not Detected
9Cl-PF3ONS 8/5/2024 <0.002 µg/L 0.002 µg/L Not Detected
lithium 8/5/2024 <9 µg/L 9 µg/L Not Detected
PFMPA 8/5/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFPeA 8/5/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFBS 8/5/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHpA 8/5/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHxS 8/5/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFNA 8/5/2024 <0.004 µg/L 0.004 µg/L Not Detected
NFDHA 8/5/2024 <0.02 µg/L 0.02 µg/L Not Detected
PFUnA 8/5/2024 <0.002 µg/L 0.002 µg/L Not Detected
PFHxA 8/5/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFDoA 8/5/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFDA 8/5/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFOA 8/5/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFOS 8/5/2024 <0.004 µg/L 0.004 µg/L Not Detected
11Cl-PF3OUdS 8/5/2024 <0.005 µg/L 0.005 µg/L Not Detected
4:2 FTS 8/5/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFTA 8/5/2024 <0.008 µg/L 0.008 µg/L Not Detected
PFTrDA 8/5/2024 <0.007 µg/L 0.007 µg/L Not Detected
NEtFOSAA 8/5/2024 <0.005 µg/L 0.005 µg/L Not Detected
NMeFOSAA 8/5/2024 <0.006 µg/L 0.006 µg/L Not Detected
PFMBA 8/5/2024 <0.003 µg/L 0.003 µg/L Not Detected
NFDHA 5/7/2024 <0.02 µg/L 0.02 µg/L Not Detected
PFDoA 5/7/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFOA 5/7/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFPeS 5/7/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFOS 5/7/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFNA 5/7/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFHxS 5/7/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHpA 5/7/2024 <0.003 µg/L 0.003 µg/L Not Detected
4:2 FTS 5/7/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHxA 5/7/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFDA 5/7/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFUnA 5/7/2024 <0.002 µg/L 0.002 µg/L Not Detected
PFMBA 5/7/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFPeA 5/7/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFMPA 5/7/2024 <0.004 µg/L 0.004 µg/L Not Detected
lithium 5/7/2024 <9 µg/L 9 µg/L Not Detected
PFBS 5/7/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHpS 5/7/2024 <0.003 µg/L 0.003 µg/L Not Detected
8:2 FTS 5/7/2024 <0.005 µg/L 0.005 µg/L Not Detected
6:2 FTS 5/7/2024 <0.005 µg/L 0.005 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 Hoopa Valley-Wide System.

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 090605126 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

09 Drinking Water Authority

09's primacy agency administers the Safe Drinking Water Act locally. Search EPA SDWIS for the current state contact, or use the state's public health or environment department portal.

Find 09 regulator via EPA SDWIS

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 Nitrate MR 4 SDWIS / 090605126 / 1040
2013 Coliform (TCR) MR 10 SDWIS / 090605126 / 3100
2012 Total Haloacetic Acids (HAA5) MR 2 SDWIS / 090605126 / 2456
2012 TTHM MR 2 SDWIS / 090605126 / 2950
2009 Arsenic MR 2 SDWIS / 090605126 / 1005
2009 Barium MR 2 SDWIS / 090605126 / 1010
2009 Cadmium MR 2 SDWIS / 090605126 / 1015
2009 Chromium MR 2 SDWIS / 090605126 / 1020
2009 Fluoride MR 2 SDWIS / 090605126 / 1025
2009 Mercury MR 2 SDWIS / 090605126 / 1035
2009 Selenium MR 2 SDWIS / 090605126 / 1045
2009 Beryllium, Total MR 2 SDWIS / 090605126 / 1075
2009 Thallium, Total MR 2 SDWIS / 090605126 / 1085
2009 Antimony, Total MR 2 SDWIS / 090605126 / 1074
2009 CYANIDE MR 2 SDWIS / 090605126 / 1024

How Hoopa Valley-Wide System Compares

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

Metric Hoopa Valley-Wide System 09 avg Federal benchmark
Total violations 209 149.5 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 16 10.4 Indicates a contaminant exceeded a federal MCL
PFAS detection None 73.2% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 3,500 1,720 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 323 regulated public water systems in 09.

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 Hoopa Valley-Wide System water safe to drink? ▼
Hoopa Valley-Wide System (PWS ID: 090605126) has 209 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 3,500 people using Surface Water sources.
How many people does Hoopa Valley-Wide System serve? ▼
Hoopa Valley-Wide System serves 3,500 people in Hoopa, 09. It is a Native American-owned system using Surface Water water sources with 1,241 service connections.
What type of violations does Hoopa Valley-Wide System have? ▼
Hoopa Valley-Wide System has 209 total violations: 16 health-based violations (MCL exceedances or treatment failures), 123 monitoring/reporting violations, and 14 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Hoopa Valley-Wide System water? ▼
No. Hoopa Valley-Wide System was tested for PFAS under the EPA's UCMR5 monitoring program and no PFAS contamination was detected.
What water source does Hoopa Valley-Wide System use? ▼
Hoopa Valley-Wide System uses Surface Water 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 PlainWater Editorial