Public water system · PA1460033
ActiveHorsham Water&Sewer Authority
At a glance
Horsham Water&Sewer Authority (PWSID PA1460033) is an active community water system in Montgomery County, Pennsylvania. It reports serving 26,000 people through 8,228 service connections. Its primary water source is purchased surface water, and EPA lists it as owned by a local government. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in July 2024.
This page covers its drinking water system only; sewer and wastewater service are not part of EPA's drinking water records.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
26,000
Service connections
8,228
Primary source
SWP
Purchased surface water
System type
CWS
Community water system
System record
How does Horsham Water&Sewer Authority compare with other water systems in Montgomery County?
By EPA's size categories, Horsham Water&Sewer Authority is a large system (10,001 to 100,000 people). Montgomery County has 166 active public water systems, and Horsham Water&Sewer Authority is the 6th-largest of them by population served. Its population served is about 3.4 times the county average of 7,675 people per system, and accounts for 2% of the 1,274,113 people reported by systems filed under the county. Across Pennsylvania, the 7,217 active systems average 1,741 people each. Nationally, the average active community water system reports serving 6,703 people, so Horsham Water&Sewer Authority is about 3.9 times 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. Pennsylvania has 1,762 active community water systems, 24% of the state's 7,217 active systems. Purchased surface water means the system buys surface water from another public water system rather than drawing its own. 244 Pennsylvania systems (3.4%) list purchased surface water as their primary source.
Who owns and regulates Horsham Water&Sewer Authority?
EPA lists Horsham Water&Sewer Authority as owned by a local government. The PA state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 15 of the 166 active systems in Montgomery County (9%) are also owned by a local government.
Does Horsham Water&Sewer Authority have drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in July 2024. The violations listed here began between January 2024 and July 2024. By type: 12 monitoring and reporting. The contaminants or rules involved are Radium-228, Benzene, Carbofuran and Chlordane. EPA lists 12 as resolved. 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.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2024-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Radium-228code 4030 | No | Resolved |
| 2024-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Benzenecode 2990 | No | Resolved |
| 2024-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Carbofurancode 2046 | No | Resolved |
| 2024-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Chlordanecode 2959 | No | Resolved |
| 2024-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | trans-1,2-Dichloroethylenecode 2979 | No | Resolved |
| 2024-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Toxaphenecode 2020 | No | Resolved |
| 2024-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Chlorobenzenecode 2989 | No | Resolved |
| 2024-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Dalaponcode 2031 | No | Resolved |
| 2024-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Styrenecode 2996 | No | Resolved |
| 2024-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | 2,4,5-TP (Silvex)code 2110 | No | Resolved |
| 2024-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Di(2-ethylhexyl) phthalatecode 2039 | No | Resolved |
| 2024-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,2-Dichloroethanecode 2980 | No | 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.
Horsham Water&Sewer Authority: frequently asked questions
Who runs Horsham Water&Sewer Authority?
Horsham Water&Sewer Authority (PWSID PA1460033) is a community water system owned by a local government. It is regulated by the PA state drinking water program.
How many people does Horsham Water&Sewer Authority serve?
Horsham Water&Sewer Authority reports serving 26,000 people through 8,228 service connections in Montgomery County, Pennsylvania.
Where does Horsham Water&Sewer Authority get its water?
EPA SDWIS lists this system's primary water source as purchased surface water. Purchased surface water means the system buys surface water from another public water system rather than drawing its own.
Does Horsham Water&Sewer Authority have any drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in July 2024. 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 Horsham Water&Sewer Authority'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, none is health-based, and the most recent began in July 2024. For current results, consult the system's annual water quality report, EPA ECHO, or the PA state drinking water program.
Where can I find Horsham Water&Sewer Authority's water quality report?
As a community water system, Horsham Water&Sewer Authority 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 Montgomery County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Aqua Pa Main System | Montgomery | 822,600 | Community | Surface water |
| North Penn Water Authority | Montgomery | 91,941 | Community | Purchased surface water |
| Pa American Norristown | Montgomery | 88,885 | Community | Surface water |
| North Wales Water Authority | Montgomery | 72,496 | Community | Surface water |
| Pottstown Borough Water Auth | Montgomery | 36,000 | Community | Surface water |
| Ambler Boro Water Dept | Montgomery | 20,000 | Community | Surface water |
Related pages
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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, “Horsham Water&Sewer Authority, PWSID PA1460033, Pennsylvania”, https://aquacensus.com/water-systems/pennsylvania/horsham-water-sewer-authority-pa1460033 (data as of October 1, 2026).