Public water system · LA1103077
ActivePonderosa Ranches Subdivision
At a glance
Ponderosa Ranches Subdivision (PWSID LA1103077) is an active community water system in St. Tammany Parish County, Louisiana. It reports serving 579 people through 193 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. Of the 12 most recent violations in EPA's records, 7 are health-based, and the most recent began in October 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
579
Service connections
193
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Ponderosa Ranches Subdivision compare with other water systems in St. Tammany Parish County?
By EPA's size categories, Ponderosa Ranches Subdivision is a small system (501 to 3,300 people). St. Tammany Parish County has 170 active public water systems. Its population served is about 55% below the county average of 1,296 people per system, and accounts for 0.3% of the 220,311 people reported by systems filed under the county. Across Louisiana, the 1,121 active systems average 4,685 people each. Nationally, the average active community water system reports serving 6,703 people, so Ponderosa Ranches Subdivision is well below that figure.
What does “community water system” mean?
A community water system serves at least 15 connections used by year-round residents, or regularly serves at least 25 year-round residents. Homes, apartments and mobile-home parks are served by these. Louisiana has 815 active community water systems, 73% of the state's 1,121 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 966 Louisiana systems (86%) list groundwater as their primary source.
Who owns and regulates Ponderosa Ranches Subdivision?
EPA lists Ponderosa Ranches Subdivision as privately owned. The LA state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 127 of the 170 active systems in St. Tammany Parish County (75%) are also privately owned.
Does Ponderosa Ranches Subdivision have drinking water violations?
Of the 12 most recent violations in EPA's records, 7 are health-based, and the most recent began in October 2025. The violations listed here began between November 2019 and October 2025. By type: 7 required treatment not met, 3 public notice, recordkeeping or other and 2 monitoring and reporting. The contaminant or rule involved most often is Groundwater Rule (7 of them). EPA lists 8 as unaddressed, 3 as resolved and 1 as addressed. Unaddressed means the violation is not resolved or archived and is not yet covered by formal enforcement. 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. Addressed means the violation is not resolved or archived and is covered by formal enforcement.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2025-10-03 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Unaddressed |
| 2025-08-05 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Unaddressed |
| 2025-08-05 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Unaddressed |
| 2025-08-05 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Unaddressed |
| 2025-08-05 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Unaddressed |
| 2025-08-05 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Unaddressed |
| 2025-08-05 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Unaddressed |
| 2024-12-18 | Monitoring and reportingLead Consumer Notice · code 66 | Lead and Copper Rulecode 5000 | No | Unaddressed |
| 2022-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2022-02-09 | Monitoring and reportingLead Consumer Notice · code 66 | Lead and Copper Rulecode 5000 | No | Addressed |
| 2021-09-24 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2019-11-28 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Resolved |
The 12 most recent 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.
Ponderosa Ranches Subdivision: frequently asked questions
Who runs Ponderosa Ranches Subdivision?
Ponderosa Ranches Subdivision (PWSID LA1103077) is a community water system privately owned. It is regulated by the LA state drinking water program.
How many people does Ponderosa Ranches Subdivision serve?
Ponderosa Ranches Subdivision reports serving 579 people through 193 service connections in St. Tammany Parish County, Louisiana.
Where does Ponderosa Ranches Subdivision get its water?
EPA SDWIS lists this system's primary water source as groundwater. Groundwater means the system draws its water from wells or springs fed by underground aquifers.
Does Ponderosa Ranches Subdivision have any drinking water violations?
Of the 12 most recent violations in EPA's records, 7 are health-based, and the most recent began in October 2025. 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 Ponderosa Ranches Subdivision'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. Of the 12 most recent violations in EPA's records, 7 are health-based, and the most recent began in October 2025. For current results, consult the system's annual water quality report, EPA ECHO, or the LA state drinking water program.
Where can I find Ponderosa Ranches Subdivision's water quality report?
As a community water system, Ponderosa Ranches Subdivision must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1 each year, covering the previous calendar year. The system can provide a copy on request.
Other water systems in St. Tammany Parish County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Slidell Water Supply | St. Tammany Parish | 35,547 | Community | Groundwater |
| St Tam Parish- Bedico -Faubourg-Coquille | St. Tammany Parish | 18,372 | Community | Groundwater |
| St Tam Parish - Briarwood Terrace | St. Tammany Parish | 17,536 | Community | Groundwater |
| City of Covington Water Supply | St. Tammany Parish | 16,185 | Community | Groundwater |
| City of Mandeville Water Supply | St. Tammany Parish | 13,000 | Community | Groundwater |
| Utilities Inc. - North Park Water Supply | St. Tammany Parish | 11,298 | 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, “Ponderosa Ranches Subdivision, PWSID LA1103077, Louisiana”, https://aquacensus.com/water-systems/louisiana/ponderosa-ranches-subdivision-la1103077 (data as of October 1, 2026).