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RAMONA WATER COMPANY

PWS ID: CA3301529 · ANZA, California 92539

RAMONA WATER COMPANY serves 250 people in ANZA, California using Groundwater water sources. It has 190 recorded EPA violations, including 59 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: RAMONA WATER COMPANY

RAMONA WATER COMPANY is a private-owned community water system that delivers drinking water to 250 residents in ANZA, California (Riverside County) through 95 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 190 total violations for this system , of which 59 (31%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 93 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 45 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 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. RAMONA WATER COMPANY's 190 violations sit above 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.

Population Served
250
Total Violations
190
Health-Based Violations
59
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
95
County
Riverside
School/Daycare
No
MCL Violations
58
Monitoring Violations
93
Treatment Tech Violations
1

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 45 2005
Nitrate MCL 41 2024
Coliform (TCR) MCL 16 2014
Nitrate MR 16 2019
Consumer Confidence Rule Other 11 2007
Lead and Copper Rule MR 6 2019
Arsenic MR 2 2015
Barium MR 2 2015
Chromium MR 2 2015
Mercury MR 2 2015
Nitrite MR 2 2015
Beryllium, Total MR 2 2015
Selenium MR 2 2015
Gross Alpha, Excl. Radon and U MR 2 1981
Cadmium MR 2 2015
Fluoride MR 2 2015
Antimony, Total MR 2 2015
Nickel MR 2 2015
Thallium, Total MR 2 2015
1,1-Dichloroethylene MCL 1 2013
LEAD AND COPPER RULE REVISIONS TT 1 2024
LEAD AND COPPER RULE REVISIONS RPT 1 2024

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 RAMONA 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 CA3301529 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 RAMONA WATER COMPANY 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
2024 Nitrate MCL 41 SDWIS / CA3301529 / 1040
2024 LEAD AND COPPER RULE REVISIONS TT 1 SDWIS / CA3301529 / 5200
2024 LEAD AND COPPER RULE REVISIONS RPT 1 SDWIS / CA3301529 / 5200
2019 Nitrate MR 16 SDWIS / CA3301529 / 1040
2019 Lead and Copper Rule MR 6 SDWIS / CA3301529 / 5000
2015 Arsenic MR 2 SDWIS / CA3301529 / 1005
2015 Barium MR 2 SDWIS / CA3301529 / 1010
2015 Chromium MR 2 SDWIS / CA3301529 / 1020
2015 Mercury MR 2 SDWIS / CA3301529 / 1035
2015 Nitrite MR 2 SDWIS / CA3301529 / 1041
2015 Beryllium, Total MR 2 SDWIS / CA3301529 / 1075
2015 Selenium MR 2 SDWIS / CA3301529 / 1045
2015 Cadmium MR 2 SDWIS / CA3301529 / 1015
2015 Fluoride MR 2 SDWIS / CA3301529 / 1025
2015 Antimony, Total MR 2 SDWIS / CA3301529 / 1074

How RAMONA WATER COMPANY Compares

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

Metric RAMONA WATER COMPANY California avg Federal benchmark
Total violations 190 21.1 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 59 8.8 Indicates a contaminant exceeded a federal MCL
PFAS detection None 64.4% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 250 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 RAMONA WATER COMPANY water safe to drink? ▼
RAMONA WATER COMPANY (PWS ID: CA3301529) has 190 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 250 people using Groundwater sources.
How many people does RAMONA WATER COMPANY serve? ▼
RAMONA WATER COMPANY serves 250 people in ANZA, California. It is a Private-owned system using Groundwater water sources with 95 service connections.
What type of violations does RAMONA WATER COMPANY have? ▼
RAMONA WATER COMPANY has 190 total violations: 59 health-based violations (MCL exceedances or treatment failures), 93 monitoring/reporting violations, and 1 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in RAMONA WATER COMPANY water? ▼
No PFAS testing data is available for RAMONA WATER COMPANY under the EPA's UCMR5 monitoring program.
What water source does RAMONA WATER COMPANY use? ▼
RAMONA 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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