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Community Water System · PWS AZ0408017

Joshua Valley Utility Company

San Francisco, Arizona 94129 - drinking water served from groundwater sources to 1,500 people, tracked in EPA SDWIS and UCMR5.

1,500
People served
230
EPA violations
21
Health-based
Untested
UCMR5 result

The verdict

EPA records 230 drinking-water violations at Joshua Valley Utility Company, 9% of them health-based - above the Arizona per-system average.

230
Total EPA violations on record
9%
Health-based (MCL / treatment failure)
1,500
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Joshua Valley Utility Company

Joshua Valley Utility Company is a private-owned community water system that delivers drinking water to 1,500 residents in San Francisco, Arizona (Mohave County) through 1,054 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 230 total violations for this system , of which 21 (9%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 165 monitoring and reporting violations are on file. The most recent violation on record dates to 2025.

The most frequently cited contaminant at this system is Nitrate, recorded in 32 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 Arizona, EPA tracks 1,493 public water systems serving 7,322,166 people, with 228,944 cumulative violations and 15,663 health-based violations on record. About 98% of systems in the state carry at least one violation, and state-wide the average per system is 153.3 violations. Statewide, 145 of 152 UCMR5-tested systems have reported PFAS detections (95.4%).

Joshua Valley Utility Company's 230 violations sit above the Arizona average.

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
1,500
Total Violations
230
Health-Based Violations
21
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
1,054
County
Mohave
School/Daycare
No
MCL Violations
21
Monitoring Violations
165
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Nitrate MR 32 2012
Consumer Confidence Rule Other 25 2017
Coliform (TCR) MCL 21 2013
Coliform (TCR) MR 16 2016
Revised Total Coliform Rule RPT 16 2024
Fluoride MR 14 2007
Lead and Copper Rule MR 12 2018
Revised Total Coliform Rule MON 9 2025
Total Polychlorinated Biphenyls (PCB) MR 8 1998
Carbofuran MR 7 1998
Arsenic MR 6 1998
Cadmium MR 6 1998
Chromium MR 6 1998
Selenium MR 6 1998
Barium MR 6 1998
Mercury MR 6 1998
OXAMYL MR 5 1998
Pentachlorophenol MR 5 1998
Beryllium, Total MR 4 1998
Thallium, Total MR 4 1998
CYANIDE MR 4 1998
Antimony, Total MR 4 1998
Nickel MR 4 1998
Gross Alpha, Excl. Radon and U MR 1 1991

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 Joshua Valley Utility Company.

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 AZ0408017 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Arizona Drinking Water Authority

Arizona DEQ, Drinking Water Program is the primacy agency that licenses and inspects Joshua Valley Utility Company under EPA-delegated authority.

Open AZ regulator portal

Source: Arizona DEQ, Drinking Water Program

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
2025 Revised Total Coliform Rule MON 9 SDWIS / AZ0408017 / 8000
2024 Revised Total Coliform Rule RPT 16 SDWIS / AZ0408017 / 8000
2018 Lead and Copper Rule MR 12 SDWIS / AZ0408017 / 5000
2017 Consumer Confidence Rule Other 25 SDWIS / AZ0408017 / 7000
2016 Coliform (TCR) MR 16 SDWIS / AZ0408017 / 3100
2013 Coliform (TCR) MCL 21 SDWIS / AZ0408017 / 3100
2012 Nitrate MR 32 SDWIS / AZ0408017 / 1040
2007 Fluoride MR 14 SDWIS / AZ0408017 / 1025
1998 Total Polychlorinated Biphenyls (PCB) MR 8 SDWIS / AZ0408017 / 2383
1998 Carbofuran MR 7 SDWIS / AZ0408017 / 2046
1998 Arsenic MR 6 SDWIS / AZ0408017 / 1005
1998 Cadmium MR 6 SDWIS / AZ0408017 / 1015
1998 Chromium MR 6 SDWIS / AZ0408017 / 1020
1998 Selenium MR 6 SDWIS / AZ0408017 / 1045
1998 Barium MR 6 SDWIS / AZ0408017 / 1010

How Joshua Valley Utility Company Compares

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

Metric Joshua Valley Utility Company Arizona avg Federal benchmark
Total violations 230 153.3 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 21 10.5 Indicates a contaminant exceeded a federal MCL
PFAS detection None 95.4% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 1,500 4,904 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 1,493 regulated public water systems in Arizona.

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 (EPA proposed extending to 2031, not yet final as of May 2026)
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is Joshua Valley Utility Company water safe to drink? ▼
Joshua Valley Utility Company (PWS ID: AZ0408017) has 230 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 1,500 people using Groundwater sources.
How many people does Joshua Valley Utility Company serve? ▼
Joshua Valley Utility Company serves 1,500 people in San Francisco, Arizona. It is a Private-owned system using Groundwater water sources with 1,054 service connections.
What type of violations does Joshua Valley Utility Company have? ▼
Joshua Valley Utility Company has 230 total violations: 21 health-based violations (MCL exceedances or treatment failures), 165 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Joshua Valley Utility Company water? ▼
No PFAS testing data is available for Joshua Valley Utility Company under the EPA's UCMR5 monitoring program.
What water source does Joshua Valley Utility Company use? ▼
Joshua Valley Utility Company 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.
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.

Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater Editorial

Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. This system's figures are rendered directly from EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.