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MOBILE HOME ESTATES

PWS ID: CA4900720 · SANTA ROSA, California 95403

MOBILE HOME ESTATES serves 210 people in SANTA ROSA, California using Groundwater water sources. It has 83 recorded EPA violations, including 7 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: MOBILE HOME ESTATES

MOBILE HOME ESTATES is a private-owned community water system that delivers drinking water to 210 residents in SANTA ROSA, California (Sonoma County) through 150 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 83 total violations for this system , of which 7 (8%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 67 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 Lead and Copper Rule, recorded in 13 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. MOBILE HOME ESTATES's 83 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
210
Total Violations
83
Health-Based Violations
7
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
150
County
Sonoma
School/Daycare
No
MCL Violations
6
Monitoring Violations
67
Treatment Tech Violations
1

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Lead and Copper Rule MR 13 2024
Coliform (TCR) MCL 6 2005
Coliform (TCR) MR 6 2015
Nitrite MR 4 2018
Atrazine MR 4 2018
Consumer Confidence Rule Other 2 2005
Nitrate MR 2 2006
Antimony, Total MR 2 2018
Diquat MR 2 2018
Endothall MR 2 2018
Beryllium, Total MR 2 2018
Arsenic MR 2 2018
Barium MR 2 2018
Cadmium MR 2 2018
Chromium MR 2 2018
Mercury MR 2 2018
Gross Alpha, Excl. Radon and U MR 2 1981
Dalapon MR 2 2018
OXAMYL MR 2 2018
Asbestos MR 2 2006
Simazine MR 2 2018
Pentachlorophenol MR 2 2018
Public Notice Other 2 2012
Thallium, Total MR 2 2018
Selenium MR 2 2018
Picloram MR 2 2018
Fluoride MR 2 2018
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 MOBILE HOME ESTATES.

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 CA4900720 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 MOBILE HOME ESTATES 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 Lead and Copper Rule MR 13 SDWIS / CA4900720 / 5000
2024 LEAD AND COPPER RULE REVISIONS TT 1 SDWIS / CA4900720 / 5200
2024 LEAD AND COPPER RULE REVISIONS RPT 1 SDWIS / CA4900720 / 5200
2018 Nitrite MR 4 SDWIS / CA4900720 / 1041
2018 Atrazine MR 4 SDWIS / CA4900720 / 2050
2018 Antimony, Total MR 2 SDWIS / CA4900720 / 1074
2018 Diquat MR 2 SDWIS / CA4900720 / 2032
2018 Endothall MR 2 SDWIS / CA4900720 / 2033
2018 Beryllium, Total MR 2 SDWIS / CA4900720 / 1075
2018 Arsenic MR 2 SDWIS / CA4900720 / 1005
2018 Barium MR 2 SDWIS / CA4900720 / 1010
2018 Cadmium MR 2 SDWIS / CA4900720 / 1015
2018 Chromium MR 2 SDWIS / CA4900720 / 1020
2018 Mercury MR 2 SDWIS / CA4900720 / 1035
2018 Dalapon MR 2 SDWIS / CA4900720 / 2031

How MOBILE HOME ESTATES Compares

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

Metric MOBILE HOME ESTATES California avg Federal benchmark
Total violations 83 21.1 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 7 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 210 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 MOBILE HOME ESTATES water safe to drink? ▼
MOBILE HOME ESTATES (PWS ID: CA4900720) has 83 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 210 people using Groundwater sources.
How many people does MOBILE HOME ESTATES serve? ▼
MOBILE HOME ESTATES serves 210 people in SANTA ROSA, California. It is a Private-owned system using Groundwater water sources with 150 service connections.
What type of violations does MOBILE HOME ESTATES have? ▼
MOBILE HOME ESTATES has 83 total violations: 7 health-based violations (MCL exceedances or treatment failures), 67 monitoring/reporting violations, and 1 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in MOBILE HOME ESTATES water? ▼
No PFAS testing data is available for MOBILE HOME ESTATES under the EPA's UCMR5 monitoring program.
What water source does MOBILE HOME ESTATES use? ▼
MOBILE HOME ESTATES 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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