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Round Valley Agency

PWS ID: 090605073 · Covelo, 09 95428

Round Valley Agency serves 84 people in Covelo, 09 using Groundwater water sources. It has 318 recorded EPA violations, including 5 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: Round Valley Agency

Round Valley Agency is a native american-owned community water system that delivers drinking water to 84 residents in Covelo, 09 through 30 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 318 total violations for this system , of which 5 (2%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 183 monitoring and reporting violations are on file. The most recent violation on record dates to 2024.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 20 violations (MR). This system has not yet been sampled under EPA's UCMR5 PFAS monitoring program, so no PFAS detection data is available here.

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. Round Valley Agency's 318 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
84
Total Violations
318
Health-Based Violations
5
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Native American
Connections
30
School/Daycare
No
MCL Violations
4
Monitoring Violations
183
Treatment Tech Violations
1

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 20 2015
Revised Total Coliform Rule RPT 16 2024
Gross Alpha, Excl. Radon and U MR 14 2011
Combined Uranium MR 14 2011
Combined Radium (-226 and -228) MR 14 2011
Nitrate MR 11 2023
Lead and Copper Rule MR 10 2020
Consumer Confidence Rule Other 7 2010
Coliform (TCR) MCL 4 2005
Chlorine MR 4 2022
Revised Total Coliform Rule MON 3 2022
Arsenic MR 2 2008
Barium MR 2 2008
Cadmium MR 2 2008
Fluoride MR 2 2011
Mercury MR 2 2008
Selenium MR 2 2008
Beryllium, Total MR 2 2008
BHC-GAMMA MR 2 2001
Toxaphene MR 2 2001
Carbofuran MR 2 2001
Atrazine MR 2 2001
LASSO MR 2 2001
Heptachlor MR 2 2001
Heptachlor epoxide MR 2 2001
2,4,5-TP MR 2 2001
Pentachlorophenol MR 2 2001
Total Polychlorinated Biphenyls (PCB) MR 2 2001
1,2-DIBROMO-3-CHLOROPROPANE MR 2 2001
ETHYLENE DIBROMIDE MR 2 2001

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 Round Valley Agency.

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 090605073 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
2024 Revised Total Coliform Rule RPT 16 SDWIS / 090605073 / 8000
2024 E. COLI MR 2 SDWIS / 090605073 / 3014
2024 LEAD AND COPPER RULE REVISIONS RPT 1 SDWIS / 090605073 / 5200
2023 Nitrate MR 11 SDWIS / 090605073 / 1040
2022 Chlorine MR 4 SDWIS / 090605073 / 0999
2022 Revised Total Coliform Rule MON 3 SDWIS / 090605073 / 8000
2022 Public Notice Other 2 SDWIS / 090605073 / 7500
2022 Groundwater Rule TT 1 SDWIS / 090605073 / 0700
2020 Lead and Copper Rule MR 10 SDWIS / 090605073 / 5000
2019 Total Haloacetic Acids (HAA5) MR 2 SDWIS / 090605073 / 2456
2019 TTHM MR 2 SDWIS / 090605073 / 2950
2015 Coliform (TCR) MR 20 SDWIS / 090605073 / 3100
2011 Gross Alpha, Excl. Radon and U MR 14 SDWIS / 090605073 / 4000
2011 Combined Uranium MR 14 SDWIS / 090605073 / 4006
2011 Combined Radium (-226 and -228) MR 14 SDWIS / 090605073 / 4010

How Round Valley Agency Compares

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

Metric Round Valley Agency 09 avg Federal benchmark
Total violations 318 149.5 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 5 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 84 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 Round Valley Agency water safe to drink? ▼
Round Valley Agency (PWS ID: 090605073) has 318 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 84 people using Groundwater sources.
How many people does Round Valley Agency serve? ▼
Round Valley Agency serves 84 people in Covelo, 09. It is a Native American-owned system using Groundwater water sources with 30 service connections.
What type of violations does Round Valley Agency have? ▼
Round Valley Agency has 318 total violations: 5 health-based violations (MCL exceedances or treatment failures), 183 monitoring/reporting violations, and 1 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Round Valley Agency water? ▼
No PFAS testing data is available for Round Valley Agency under the EPA's UCMR5 monitoring program.
What water source does Round Valley Agency use? ▼
Round Valley Agency 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. 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