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MONTEZUMA RIMROCK WATER COMPANY

PWS ID: AZ0413071 · RIMROCK, Arizona 86335

MONTEZUMA RIMROCK WATER COMPANY serves 439 people in RIMROCK, Arizona using Groundwater water sources. It has 330 recorded EPA violations, including 119 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: MONTEZUMA RIMROCK WATER COMPANY

MONTEZUMA RIMROCK WATER COMPANY is a private-owned community water system that delivers drinking water to 439 residents in RIMROCK, Arizona (Yavapai County) through 244 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 330 total violations for this system , of which 119 (36%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 163 monitoring and reporting violations are on file. The most recent violation on record dates to 2023.

The most frequently cited contaminant at this system is Arsenic, recorded in 116 violations (MCL, health-based). 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. MONTEZUMA RIMROCK WATER COMPANY's 330 violations sit above the Arizona average. Statewide, 145 of 152 UCMR5-tested systems have reported PFAS detections (95.4%). 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
439
Total Violations
330
Health-Based Violations
119
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
244
County
Yavapai
School/Daycare
No
MCL Violations
119
Monitoring Violations
163
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Arsenic MCL 116 2013
Chlorine MR 44 2023
Arsenic MR 35 2017
Consumer Confidence Rule Other 32 2019
Coliform (TCR) MR 13 2014
TTHM MR 5 2023
Total Haloacetic Acids (HAA5) MR 5 2023
Nitrate MR 5 2006
Coliform (TCR) MCL 3 2000
Lead and Copper Rule MR 3 2005
1,2,4-Trichlorobenzene MR 2 2002
Xylenes, Total MR 2 2002
o-Dichlorobenzene MR 2 2002
p-Dichlorobenzene MR 2 2002
trans-1,2-Dichloroethylene MR 2 2002
1,2-Dichloroethane MR 2 2002
1,1,1-Trichloroethane MR 2 2002
Carbon tetrachloride MR 2 2002
Trichloroethylene MR 2 2002
Toluene MR 2 2002
Ethylbenzene MR 2 2002
cis-1,2-Dichloroethylene MR 2 2002
DICHLOROMETHANE MR 2 2002
Tetrachloroethylene MR 2 2002
Benzene MR 2 2002
Styrene MR 2 2002
Chromium MR 2 1989
Cadmium MR 2 1989
Barium MR 2 1989
Fluoride MR 2 1989

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 MONTEZUMA RIMROCK WATER 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 AZ0413071 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 MONTEZUMA RIMROCK WATER 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
2023 Chlorine MR 44 SDWIS / AZ0413071 / 0999
2023 TTHM MR 5 SDWIS / AZ0413071 / 2950
2023 Total Haloacetic Acids (HAA5) MR 5 SDWIS / AZ0413071 / 2456
2023 Revised Total Coliform Rule RPT 2 SDWIS / AZ0413071 / 8000
2019 Consumer Confidence Rule Other 32 SDWIS / AZ0413071 / 7000
2017 Arsenic MR 35 SDWIS / AZ0413071 / 1005
2014 Coliform (TCR) MR 13 SDWIS / AZ0413071 / 3100
2013 Arsenic MCL 116 SDWIS / AZ0413071 / 1005
2006 Nitrate MR 5 SDWIS / AZ0413071 / 1040
2005 Lead and Copper Rule MR 3 SDWIS / AZ0413071 / 5000
2002 1,2,4-Trichlorobenzene MR 2 SDWIS / AZ0413071 / 2378
2002 Xylenes, Total MR 2 SDWIS / AZ0413071 / 2955
2002 o-Dichlorobenzene MR 2 SDWIS / AZ0413071 / 2968
2002 p-Dichlorobenzene MR 2 SDWIS / AZ0413071 / 2969
2002 trans-1,2-Dichloroethylene MR 2 SDWIS / AZ0413071 / 2979

How MONTEZUMA RIMROCK WATER COMPANY Compares

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

Metric MONTEZUMA RIMROCK WATER COMPANY Arizona avg Federal benchmark
Total violations 330 153.3 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 119 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 439 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
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is MONTEZUMA RIMROCK WATER COMPANY water safe to drink? ▼
MONTEZUMA RIMROCK WATER COMPANY (PWS ID: AZ0413071) has 330 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 439 people using Groundwater sources.
How many people does MONTEZUMA RIMROCK WATER COMPANY serve? ▼
MONTEZUMA RIMROCK WATER COMPANY serves 439 people in RIMROCK, Arizona. It is a Private-owned system using Groundwater water sources with 244 service connections.
What type of violations does MONTEZUMA RIMROCK WATER COMPANY have? ▼
MONTEZUMA RIMROCK WATER COMPANY has 330 total violations: 119 health-based violations (MCL exceedances or treatment failures), 163 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in MONTEZUMA RIMROCK WATER COMPANY water? ▼
No PFAS testing data is available for MONTEZUMA RIMROCK WATER COMPANY under the EPA's UCMR5 monitoring program.
What water source does MONTEZUMA RIMROCK WATER COMPANY use? ▼
MONTEZUMA RIMROCK WATER 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.

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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 Kiznis Studio Editorial