Public water system · PA4470007
ActiveDanville Municipal Water Auth
At a glance
Danville Municipal Water Auth (PWSID PA4470007) is an active community water system in Montour County, Pennsylvania. It reports serving 4,992 people through 2,272 service connections. Its primary water source is 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 October 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
4,992
Service connections
2,272
Primary source
SW
Surface water
System type
CWS
Community water system
System record
How does Danville Municipal Water Auth compare with other water systems in Montour County?
By EPA's size categories, Danville Municipal Water Auth is a medium system (3,301 to 10,000 people). Montour County has 20 active public water systems, and Danville Municipal Water Auth is the 2nd-largest of them by population served. Its population served is about 6.7 times the county average of 748 people per system, and accounts for 33% of the 14,963 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 Danville Municipal Water Auth is about 26% 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. Pennsylvania has 1,762 active community water systems, 24% of the state's 7,217 active systems. Surface water means the system draws its water from rivers, lakes, streams or reservoirs. 246 Pennsylvania systems (3.4%) list surface water as their primary source.
Who owns and regulates Danville Municipal Water Auth?
EPA lists Danville Municipal Water Auth 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. 2 of the 20 active systems in Montour County (10%) are also owned by a local government.
Does Danville Municipal Water Auth have drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in October 2025. The violations listed here began between January 2023 and October 2025. By type: 9 monitoring and reporting and 3 public notice, recordkeeping or other. The contaminant or rule involved most often is Public Notice (3 of them). EPA lists 9 as resolved and 3 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 |
|---|---|---|---|---|
| 2025-10-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2025-07-11 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2024-10-11 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2024-09-11 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2024-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2024-04-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Carbon, totalcode 2920 | No | Archived |
| 2023-09-01 | Monitoring and reportingMonitoring, Turbidity (Enhanced SWTR) · code 38 | Interim Enhanced Surface Water Treatment Rulecode 0300 | No | Archived |
| 2023-08-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Filter) · code 36 | Surface Water Treatment Rulecode 0200 | No | Archived |
| 2023-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Simazinecode 2037 | No | Resolved |
| 2023-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | 2,4,5-TP (Silvex)code 2110 | No | Resolved |
| 2023-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Picloramcode 2040 | No | Resolved |
| 2023-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Di(2-ethylhexyl) phthalatecode 2039 | 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.
Danville Municipal Water Auth: frequently asked questions
Who runs Danville Municipal Water Auth?
Danville Municipal Water Auth (PWSID PA4470007) is a community water system owned by a local government. It is regulated by the PA state drinking water program.
How many people does Danville Municipal Water Auth serve?
Danville Municipal Water Auth reports serving 4,992 people through 2,272 service connections in Montour County, Pennsylvania.
Where does Danville Municipal Water Auth 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 Danville Municipal Water Auth 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 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 Danville Municipal Water Auth'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 October 2025. For current results, consult the system's annual water quality report, EPA ECHO, or the PA state drinking water program.
Where can I find Danville Municipal Water Auth's water quality report?
As a community water system, Danville Municipal Water Auth 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 Montour County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Geisinger Medical Center | Montour | 6,442 | Non-transient non-community | Purchased surface water |
| Penndot-Site 35 Modern Rest Ar | Montour | 700 | Transient non-community | Groundwater |
| Penndot-Site 36 Modern Rest Ar | Montour | 700 | Transient non-community | Groundwater |
| Liberty Valley Elem School | Montour | 549 | Non-transient non-community | Groundwater |
| Great Dane Limited Partnership | Montour | 250 | Non-transient non-community | Groundwater |
| Hunters Dairy Freeze | Montour | 250 | Transient non-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, “Danville Municipal Water Auth, PWSID PA4470007, Pennsylvania”, https://aquacensus.com/water-systems/pennsylvania/danville-municipal-water-auth-pa4470007 (data as of October 1, 2026).