Public water system · OK1011310

Active

Letra Beach

At a glance

Letra Beach (PWSID OK1011310) is an active transient non-community water system in Comanche County, Oklahoma. It reports serving 26 people through 1 service connection. Its primary water source is surface water, and EPA lists it as owned by the federal government. EPA's records list 10 violations for this system; 8 are health-based, and the most recent began in July 2020.

Dataset updated October 2026 . Source: EPA SDWIS/ECHO public records.

Population served

Service connections

Primary source

Surface water

System type

TNCWS

Transient non-community water system

System record

PWSIDOK1011310

System typeTransient non-community water system

Activity statusActive

Population served26

Service connections1

Primary water sourceSurface water

Owner typeFederal government

Primacy agencyOK state drinking water program

City served—

StateOklahoma

ZIP—

CountyComanche County

How does Letra Beach compare with other water systems in Comanche County?

By EPA's size categories, Letra Beach is a very small system (500 people or fewer). Comanche County has 25 active public water systems. Its population served is well below the county average of 5,492 people per system, and accounts for less than 0.1% of the 137,288 people reported by systems filed under the county. Across Oklahoma, the 1,254 active systems average 2,907 people each. Nationally, the average active transient non-community water system reports serving 144 people, so Letra Beach is well below that figure.

What does “transient non-community water system” mean?

A transient non-community water system serves places where people do not stay long, such as gas stations and campgrounds, and regularly serves at least 25 people a day for at least 60 days a year. Oklahoma has 306 active transient non-community water systems, 24% of the state's 1,254 active systems. Surface water means the system draws its water from rivers, lakes, streams or reservoirs. 175 Oklahoma systems (14%) list surface water as their primary source.

Who owns and regulates Letra Beach?

EPA lists Letra Beach as owned by the federal government. The OK state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 3 of the 25 active systems in Comanche County (12%) are also owned by the federal government.

Does Letra Beach have drinking water violations?

EPA's records list 10 violations for this system; 8 are health-based, and the most recent began in July 2020. The violations listed here began between June 2002 and July 2020. By type: 8 required treatment not met and 2 monitoring and reporting. The contaminant or rule involved most often is Surface Water Treatment Rule (8 of them). EPA lists 6 as resolved and 4 as archived. Resolved means at least one resolving action is on record: the system returned to compliance, the rule no longer applies, or no further action was needed. Archived means the violation was not marked resolved but is more than five years past the end of the noncompliance period, so it no longer counts toward current compliance status.

Began	Violation	Contaminant or rule	Health-based	Status
2020-07-01	Required treatment not metTreatment Technique (SWTR and GWR) · code 41	Surface Water Treatment Rulecode 0200	Yes	Resolved
2020-06-01	Required treatment not metTreatment Technique (SWTR and GWR) · code 41	Surface Water Treatment Rulecode 0200	Yes	Resolved
2020-05-01	Required treatment not metTreatment Technique (SWTR and GWR) · code 41	Surface Water Treatment Rulecode 0200	Yes	Resolved
2020-04-01	Required treatment not metTreatment Technique (SWTR and GWR) · code 41	Surface Water Treatment Rulecode 0200	Yes	Resolved
2010-09-01	Monitoring and reportingMonitoring, Routine Major (TCR) · code 23	Total coliform bacteria (TCR)code 3100	No	Resolved
2005-01-01	Monitoring and reportingMonitoring, Regular · code 03	Nitrate-Nitritecode 1038	No	Resolved
2002-09-01	Required treatment not metTreatment Technique (SWTR and GWR) · code 41	Surface Water Treatment Rulecode 0200	Yes	Archived
2002-08-01	Required treatment not metTreatment Technique (SWTR and GWR) · code 41	Surface Water Treatment Rulecode 0200	Yes	Archived
2002-07-01	Required treatment not metTreatment Technique (SWTR and GWR) · code 41	Surface Water Treatment Rulecode 0200	Yes	Archived
2002-06-01	Required treatment not metTreatment Technique (SWTR and GWR) · code 41	Surface Water Treatment Rulecode 0200	Yes	Archived

All 10 violations in EPA's records, newest first.Labels and codes come from EPA's SDWIS reference tables. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found. "Health-based" marks violations of a legal limit or required treatment.

Letra Beach: frequently asked questions

Who runs Letra Beach?

Letra Beach (PWSID OK1011310) is a transient non-community water system owned by the federal government. It is regulated by the OK state drinking water program.

How many people does Letra Beach serve?

Letra Beach reports serving 26 people through 1 service connection in Comanche County, Oklahoma.

Where does Letra Beach get its water?

EPA SDWIS lists this system's primary water source as surface water. Surface water means the system draws its water from rivers, lakes, streams or reservoirs.

Does Letra Beach have any drinking water violations?

EPA's records list 10 violations for this system; 8 are health-based, and the most recent began in July 2020. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found.

Is Letra Beach's water safe to drink?

AquaCensus shows EPA compliance records, not current water test results, so it cannot say whether the water is safe at a given moment. EPA's records list 10 violations for this system; 8 are health-based, and the most recent began in July 2020. For current results, consult EPA ECHO, or the OK state drinking water program.

Where can I find Letra Beach's water quality report?

The annual Consumer Confidence Report requirement applies to community water systems. Letra Beach is a transient non-community water system, so it is not required to publish one; like every public water system, it must notify the people it serves about violations under EPA's public notification rules.

Other water systems in Comanche County

Water system	County	Population served	Type	Source
Lawton	Comanche	92,757	Community	Surface water
Fort Sill Hqusafacfs	Comanche	23,000	Community	Purchased surface water
Elgin Pwa	Comanche	3,300	Community	Groundwater
Comanche Co Rwd #4	Comanche	3,000	Community	Purchased surface water
Comanche Co Rwd #1	Comanche	2,800	Community	Purchased surface water
Cache	Comanche	2,371	Community	Groundwater

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About this data

Source: U.S. EPA Safe Drinking Water Information System (SDWIS) and SDWA violation records, via EPA ECHO, as published October 1, 2026 — AquaCensus refreshes it quarterly. See the methodology for how records are matched, cleaned and scored.

Cite as: AquaCensus, “Letra Beach, PWSID OK1011310, Oklahoma”, https://aquacensus.com/water-systems/oklahoma/letra-beach-ok1011310 (data as of October 1, 2026).