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Community Water System · PWS CT0340111

Aqua Vista Assoc, Inc

Danbury, Connecticut 06811 - drinking water served from groundwater sources to 388 people, tracked in EPA SDWIS and UCMR5.

388
People served
137
EPA violations
46
Health-based
Untested
UCMR5 result

The verdict

EPA records 137 drinking-water violations at Aqua Vista Assoc, Inc, 34% of them health-based - above the Connecticut per-system average.

137
Total EPA violations on record
34%
Health-based (MCL / treatment failure)
388
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Aqua Vista Assoc, Inc

Aqua Vista Assoc, Inc is a private-owned community water system that delivers drinking water to 388 residents in Danbury, Connecticut (Fairfield County) through 63 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 137 total violations for this system , of which 46 (34%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 59 monitoring and reporting violations are on file. The most recent violation on record dates to 2016.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 46 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 Connecticut, EPA tracks 2,332 public water systems serving 2,886,005 people, with 206,662 cumulative violations and 21,779 health-based violations on record. About 94% of systems in the state carry at least one violation, and state-wide the average per system is 88.6 violations. Statewide, 40 of 63 UCMR5-tested systems have reported PFAS detections (63.5%).

Aqua Vista Assoc, Inc's 137 violations sit above the Connecticut 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
388
Total Violations
137
Health-Based Violations
46
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
63
County
Fairfield
School/Daycare
No
MCL Violations
46
Monitoring Violations
59
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MCL 46 1998
Consumer Confidence Rule Other 16 2015
Chlorine MR 8 2016
Lead and Copper Rule MR 6 2014
Coliform (TCR) MR 6 2012
E. COLI MR 5 2016
Revised Total Coliform Rule RPT 5 2016
1,2-Dichloroethane MR 4 1990
p-Dichlorobenzene MR 4 1990
Vinyl chloride MR 4 1990
1,1-Dichloroethylene MR 4 1990
1,1,1-Trichloroethane MR 4 1990
Carbon tetrachloride MR 4 1990
Benzene MR 4 1990
Trichloroethylene MR 4 1990
Coliform (TCR) Other 2 1998
Nitrate MR 2 2012

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 Aqua Vista Assoc, Inc.

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 CT0340111 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Connecticut Drinking Water Authority

Connecticut's primacy agency administers the Safe Drinking Water Act locally. Search EPA SDWIS for the current state contact, or use the state's public health or environment department portal.

Find CT regulator via EPA SDWIS

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
2016 Chlorine MR 8 SDWIS / CT0340111 / 0999
2016 E. COLI MR 5 SDWIS / CT0340111 / 3014
2016 Revised Total Coliform Rule RPT 5 SDWIS / CT0340111 / 8000
2015 Consumer Confidence Rule Other 16 SDWIS / CT0340111 / 7000
2014 Lead and Copper Rule MR 6 SDWIS / CT0340111 / 5000
2012 Coliform (TCR) MR 6 SDWIS / CT0340111 / 3100
2012 Nitrate MR 2 SDWIS / CT0340111 / 1040
1998 Coliform (TCR) MCL 46 SDWIS / CT0340111 / 3100
1998 Coliform (TCR) Other 2 SDWIS / CT0340111 / 3100
1990 1,2-Dichloroethane MR 4 SDWIS / CT0340111 / 2980
1990 p-Dichlorobenzene MR 4 SDWIS / CT0340111 / 2969
1990 Vinyl chloride MR 4 SDWIS / CT0340111 / 2976
1990 1,1-Dichloroethylene MR 4 SDWIS / CT0340111 / 2977
1990 1,1,1-Trichloroethane MR 4 SDWIS / CT0340111 / 2981
1990 Carbon tetrachloride MR 4 SDWIS / CT0340111 / 2982

How Aqua Vista Assoc, Inc Compares

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

Metric Aqua Vista Assoc, Inc Connecticut avg Federal benchmark
Total violations 137 88.6 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 46 9.3 Indicates a contaminant exceeded a federal MCL
PFAS detection None 63.5% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 388 1,238 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 2,332 regulated public water systems in Connecticut.

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 Aqua Vista Assoc, Inc water safe to drink? ▼
Aqua Vista Assoc, Inc (PWS ID: CT0340111) has 137 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 388 people using Groundwater sources.
How many people does Aqua Vista Assoc, Inc serve? ▼
Aqua Vista Assoc, Inc serves 388 people in Danbury, Connecticut. It is a Private-owned system using Groundwater water sources with 63 service connections.
What type of violations does Aqua Vista Assoc, Inc have? ▼
Aqua Vista Assoc, Inc has 137 total violations: 46 health-based violations (MCL exceedances or treatment failures), 59 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Aqua Vista Assoc, Inc water? ▼
No PFAS testing data is available for Aqua Vista Assoc, Inc under the EPA's UCMR5 monitoring program.
What water source does Aqua Vista Assoc, Inc use? ▼
Aqua Vista Assoc, Inc 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.