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PAVESTONE

PWS ID: CA5700798 · WINTERS, California 95694

PAVESTONE serves 42 people in WINTERS, California using Groundwater water sources. It has 117 recorded EPA violations, including 0 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: PAVESTONE

PAVESTONE is a private-owned non-transient non-community water system that delivers drinking water to 42 residents in WINTERS, California (Yolo County) through 2 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 117 total violations for this system , of which 0 (0%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 112 monitoring and reporting violations are on file. The most recent violation on record dates to 2018.

The most frequently cited contaminant at this system is Chromium, recorded in 4 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. PAVESTONE's 117 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
42
Total Violations
117
Health-Based Violations
0
Water Source
Groundwater

System Details

System Type
Non-Transient Non-Community
Owner Type
Private
Connections
2
County
Yolo
School/Daycare
No
MCL Violations
0
Monitoring Violations
112
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Chromium MR 4 2017
Fluoride MR 4 2017
Nitrite MR 4 2017
Thallium, Total MR 4 2017
Selenium MR 4 2017
Lead and Copper Rule MR 4 2016
Antimony, Total MR 4 2017
Beryllium, Total MR 4 2017
Barium MR 4 2017
Cadmium MR 4 2017
Consumer Confidence Rule Other 4 2018
Mercury MR 4 2017
Arsenic MR 4 2017
Nickel MR 4 2017
Methoxychlor MR 2 2014
Toxaphene MR 2 2014
Diquat MR 2 2014
Di(2-ethylhexyl) adipate MR 2 2014
Di(2-ethylhexyl) phthalate MR 2 2014
Picloram MR 2 2014
Carbofuran MR 2 2014
Atrazine MR 2 2014
Heptachlor epoxide MR 2 2014
2,4-D MR 2 2014
Benzo(a)pyrene MR 2 2014
Total Polychlorinated Biphenyls (PCB) MR 2 2014
ETHYLENE DIBROMIDE MR 2 2014
OXAMYL MR 2 2014
LASSO MR 2 2014
2,4,5-TP MR 2 2014

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 PAVESTONE.

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 CA5700798 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 PAVESTONE 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
2018 Consumer Confidence Rule Other 4 SDWIS / CA5700798 / 7000
2017 Chromium MR 4 SDWIS / CA5700798 / 1020
2017 Fluoride MR 4 SDWIS / CA5700798 / 1025
2017 Nitrite MR 4 SDWIS / CA5700798 / 1041
2017 Thallium, Total MR 4 SDWIS / CA5700798 / 1085
2017 Selenium MR 4 SDWIS / CA5700798 / 1045
2017 Antimony, Total MR 4 SDWIS / CA5700798 / 1074
2017 Beryllium, Total MR 4 SDWIS / CA5700798 / 1075
2017 Barium MR 4 SDWIS / CA5700798 / 1010
2017 Cadmium MR 4 SDWIS / CA5700798 / 1015
2017 Mercury MR 4 SDWIS / CA5700798 / 1035
2017 Arsenic MR 4 SDWIS / CA5700798 / 1005
2017 Nickel MR 4 SDWIS / CA5700798 / 1036
2016 Lead and Copper Rule MR 4 SDWIS / CA5700798 / 5000
2014 Methoxychlor MR 2 SDWIS / CA5700798 / 2015

How PAVESTONE Compares

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

Metric PAVESTONE California avg Federal benchmark
Total violations 117 21.1 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 0 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 42 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 PAVESTONE water safe to drink? ▼
PAVESTONE (PWS ID: CA5700798) has 117 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 42 people using Groundwater sources.
How many people does PAVESTONE serve? ▼
PAVESTONE serves 42 people in WINTERS, California. It is a Private-owned system using Groundwater water sources with 2 service connections.
What type of violations does PAVESTONE have? ▼
PAVESTONE has 117 total violations: 0 health-based violations (MCL exceedances or treatment failures), 112 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in PAVESTONE water? ▼
No PFAS testing data is available for PAVESTONE under the EPA's UCMR5 monitoring program.
What water source does PAVESTONE use? ▼
PAVESTONE uses Groundwater as its primary water source. It is classified as a Non-Transient Non-Community Water System, serving the same people for at least 6 months per year.
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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