Community Water System · PWS MO4256181

Lake Seven Falls Assn Inc

St Genevieve, Missouri 63670-0000 - drinking water served from groundwater sources to 475 people, tracked in EPA SDWIS and UCMR5.

Compiled by PlainWater Editorial, Drinking Water Quality Editorial Team · May 15, 2026

475
People served: 289
EPA violations: 17
Health-based: Untested
UCMR5 result

The verdict

EPA records 289 drinking-water violations at Lake Seven Falls Assn Inc, 6% of them health-based - above the Missouri per-system average.

289
Total EPA violations on record: 6%
Health-based (MCL / treatment failure): 475
People served by this system: N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Lake Seven Falls Assn Inc

Lake Seven Falls Assn Inc is a private-owned community water system that delivers drinking water to 475 residents in St Genevieve, Missouri (Ste. Genevieve County) through 76 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 289 total violations for this system , of which 17 (6%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 262 monitoring and reporting violations are on file. The most recent violation on record dates to 2025.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 83 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 Missouri, EPA tracks 2,823 public water systems serving 5,855,885 people, with 201,695 cumulative violations and 54,821 health-based violations on record. About 95% of systems in the state carry at least one violation, and state-wide the average per system is 71.4 violations. Statewide, 162 of 230 UCMR5-tested systems have reported PFAS detections (70.4%).

Lake Seven Falls Assn Inc's 289 violations sit above the Missouri 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

475

Total Violations

289

Health-Based Violations

Water Source

Groundwater

System Details

System Type: Community
Owner Type: Private
Connections: 76
County: Ste. Genevieve
School/Daycare: No
MCL Violations: 17
Monitoring Violations: 262
Treatment Tech Violations: 0

Violation History

Contaminant violations recorded by EPA.

Contaminant	Category	Count	Latest
Coliform (TCR)	MR	83	2006
Combined Radium (-226 and -228)	MCL	17	2024
1,1-Dichloroethylene	MR	8	1993
1,2-Dichloropropane	MR	8	1993
Ethylbenzene	MR	8	1993
p-Dichlorobenzene	MR	8	1993
Toluene	MR	8	1993
trans-1,2-Dichloroethylene	MR	8	1993
Trichloroethylene	MR	8	1993
Xylenes, Total	MR	8	1993
1,1,2-Trichloroethane	MR	8	1993
DICHLOROMETHANE	MR	8	1993
CHLOROBENZENE	MR	8	1993
Revised Total Coliform Rule	MON	8	2024
Benzene	MR	8	1993
Vinyl chloride	MR	8	1993
1,1,1-Trichloroethane	MR	8	1993
1,2-Dichloroethane	MR	8	1993
Carbon tetrachloride	MR	8	1993
Styrene	MR	8	1993
1,2,4-Trichlorobenzene	MR	8	1993
o-Dichlorobenzene	MR	8	1993
Tetrachloroethylene	MR	8	1993
cis-1,2-Dichloroethylene	MR	8	1993
Lead and Copper Rule	MR	3	2012
Consumer Confidence Rule	Other	2	2012
Public Notice	Other	1	2025

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 Lake Seven Falls Assn 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 MO4256181 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Missouri Drinking Water Authority

Missouri DNR, Public Drinking Water Branch is the primacy agency that licenses and inspects Lake Seven Falls Assn Inc under EPA-delegated authority.

Open MO regulator portal

Source: Missouri DNR, Public Drinking Water Branch

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
2025	Public Notice	Other	1	SDWIS / MO4256181 / 7500
2024	Combined Radium (-226 and -228)	MCL	17	SDWIS / MO4256181 / 4010
2024	Revised Total Coliform Rule	MON	8	SDWIS / MO4256181 / 8000
2012	Lead and Copper Rule	MR	3	SDWIS / MO4256181 / 5000
2012	Consumer Confidence Rule	Other	2	SDWIS / MO4256181 / 7000
2006	Coliform (TCR)	MR	83	SDWIS / MO4256181 / 3100
1993	1,1-Dichloroethylene	MR	8	SDWIS / MO4256181 / 2977
1993	1,2-Dichloropropane	MR	8	SDWIS / MO4256181 / 2983
1993	Ethylbenzene	MR	8	SDWIS / MO4256181 / 2992
1993	p-Dichlorobenzene	MR	8	SDWIS / MO4256181 / 2969
1993	Toluene	MR	8	SDWIS / MO4256181 / 2991
1993	trans-1,2-Dichloroethylene	MR	8	SDWIS / MO4256181 / 2979
1993	Trichloroethylene	MR	8	SDWIS / MO4256181 / 2984
1993	Xylenes, Total	MR	8	SDWIS / MO4256181 / 2955
1993	1,1,2-Trichloroethane	MR	8	SDWIS / MO4256181 / 2985

How Lake Seven Falls Assn Inc Compares

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

Metric	Lake Seven Falls Assn Inc	Missouri avg	Federal benchmark
Total violations	289	71.4	SDWA compliance, any non-zero count is a recorded breach
Health-based violations	17	19.4	Indicates a contaminant exceeded a federal MCL
PFAS detection	None	70.4%	EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served	475	2,074	Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 2,823 regulated public water systems in Missouri.

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 Lake Seven Falls Assn Inc water safe to drink? ▼

Lake Seven Falls Assn Inc (PWS ID: MO4256181) has 289 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 475 people using Groundwater sources.

How many people does Lake Seven Falls Assn Inc serve? ▼

Lake Seven Falls Assn Inc serves 475 people in St Genevieve, Missouri. It is a Private-owned system using Groundwater water sources with 76 service connections.

What type of violations does Lake Seven Falls Assn Inc have? ▼

Lake Seven Falls Assn Inc has 289 total violations: 17 health-based violations (MCL exceedances or treatment failures), 262 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.

Has PFAS been detected in Lake Seven Falls Assn Inc water? ▼

No PFAS testing data is available for Lake Seven Falls Assn Inc under the EPA's UCMR5 monitoring program.

What water source does Lake Seven Falls Assn Inc use? ▼

Lake Seven Falls Assn 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.