Danville Municipal Water Authority
EPA ID: PA4470007 · 4,992 people served · 1 ZIP code
ZipCheckup's reading of EPA SDWIS for Danville Municipal Water Authority (PA4470007): 1 past health-based violation, since resolved. Within the five-year EPA monitoring span, Danville Municipal Water Authority accumulated 66 violations - every finding has been resolved and the utility operates in full compliance today, supplying water to approximately 4,992 people without any active enforcement proceedings.
Data: EPA SDWIS
Service Area Map
Coverage area for Danville Municipal Water Authority Source: EPA SDWIS service area boundaries.
Service area boundary
Service Area Demographics
The Danville Municipal Water Authority serves a community with a median household income of $73,137 and an estimated 18,787 residents across its service area. Approximately 69% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
Environmental Justice Note: 54% of the population in this service area is classified as disadvantaged under EPA's EJScreen criteria. Communities with higher disadvantaged populations often face disproportionate environmental and health burdens, including aging water infrastructure and limited resources for remediation.
🌊 Where Does Your Water Come From?
Danville Municipal Water Authority's water is drawn from rivers, lakes, or reservoirs. Surface water sources are more exposed to agricultural runoff, stormwater, and upstream discharges, but they typically receive more intensive treatment before reaching your tap.
Wastewater Proximity Note: This service area ranks in the 60th percentile nationally for proximity to wastewater discharge points. Surface water sources near wastewater outfalls may face additional treatment challenges.
Infrastructure Risk
Detected Contaminants
How Danville Municipal Water Authority compares to EPA limits
What This Means For You
PFOA at 1 mg/L exceeds the EPA maximum of 0.000004 mg/L.
PFNA at 1 mg/L exceeds the EPA maximum of 0.00001 mg/L.
Mercury at 1 mg/L exceeds the EPA maximum of 0.002 mg/L. Kidney damage, neurological impairment. Consider activated carbon (GAC) filtration.
Chlorodibromomethane at 1 mg/L exceeds the EPA maximum of 0.002 mg/L. Liver cancer, brain cancer (known carcinogen). Consider granular activated carbon (GAC) filtration.
Atrazine at 1 mg/L exceeds the EPA maximum of 0.003 mg/L. Endocrine disruption, cardiovascular & reproductive effects. Consider granular activated carbon (GAC) filtration.
PFAS Detected in Service Area
PFAS ("forever chemicals") have been detected in water serving this system's area. 2 detections recorded.
Mercury was detected in this water system. activated carbon (GAC) filtration can reduce exposure.
Find a certified water filter →Comparable Water Systems
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Estimated Remediation Costs
Average estimated costs across ZIP codes served by this system
Based on national averages for common remediation projects. Actual costs vary by property. Only issues flagged by EPA, FEMA, or state data for each ZIP code are included.
System Overview
Danville Municipal Water Authority (EPA ID: PA4470007) is a community water system in Pennsylvania that serves approximately 4,992 people from surface water sources.
This system serves ZIP code 17821 in Danville.
Violation History
Status breakdown for accepted records with record years 2021-2026: 63 resolved, 3 archived, 0 addressed, and 0 unaddressed. Under this source contract, current noncompliance is the sum of addressed and unaddressed records. Archived and resolved records are excluded from current noncompliance.
Recent Violations
| Date | Contaminant | Type | Status |
|---|---|---|---|
| October 1, 2025 | Haloacetic Acids (HAA5) | Non-health-based | Resolved |
| July 11, 2025 | Lead and Copper Rule | Non-health-based | Resolved |
| October 11, 2024 | Lead and Copper Rule | Non-health-based | Resolved |
| September 11, 2024 | Lead and Copper Rule | Non-health-based | Resolved |
| July 1, 2024 | Haloacetic Acids (HAA5) | Non-health-based | Resolved |
| April 1, 2024 | Chlorite | Non-health-based | Archived |
| September 1, 2023 | Fecal Coliform | Non-health-based | Archived |
| August 1, 2023 | E. coli | Non-health-based | Archived |
| January 1, 2023 | Contaminant 2031 | Non-health-based | Resolved |
| January 1, 2023 | Contaminant 2032 | Non-health-based | Resolved |
| January 1, 2023 | Contaminant 2033 | Non-health-based | Resolved |
| January 1, 2023 | Contaminant 2034 | Non-health-based | Resolved |
| January 1, 2023 | Contaminant 2035 | Non-health-based | Resolved |
| January 1, 2023 | Contaminant 2036 | Non-health-based | Resolved |
| January 1, 2023 | Contaminant 2037 | Non-health-based | Resolved |
| January 1, 2023 | Atrazine | Non-health-based | Resolved |
| January 1, 2023 | Contaminant 2040 | Non-health-based | Resolved |
| January 1, 2023 | Contaminant 2041 | Non-health-based | Resolved |
| January 1, 2023 | Contaminant 2046 | Non-health-based | Resolved |
| January 1, 2023 | Benzene | Non-health-based | Resolved |
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| Fecal Coliform | Microbiological | 6 | No |
| Lead and Copper Rule | Treatment Failure | 4 | No |
| Haloacetic Acids (HAA5) | Disinfection Byproducts | 2 | No |
| Surface Water Treatment Rule | Treatment Failure | 2 | No |
| Consumer Confidence Report Rule | Reporting Failure | 2 | Yes |
| E. coli | Microbiological | 2 | No |
| Barium | Inorganic | 1 | No |
| Cadmium | Inorganic | 1 | No |
| Chromium | Inorganic | 1 | No |
| Fluoride | Inorganic | 1 | No |
| Selenium | Inorganic | 1 | No |
| Nickel | Inorganic | 1 | No |
| Nitrite | Inorganic | 1 | No |
| Contaminant 1036 | Other Violation | 1 | No |
| Contaminant 1045 | Other Violation | 1 | No |
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0 mg/L | No | N/A |
No copper action-level exceedance record appears for this PWSID in the accepted LCR snapshot. This does not establish a clean copper measurement.
Radon Risk in Service Area
Dominant radon zone for ZIP codes served by this system: Zone 1 (High Risk)
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
Need help with your water quality?
Typical cost: Water test: typically $20–$50 (DIY kit) · Professional inspection: $150–$400
Find the Right Water FilterFree tip: Let cold water run for 2 minutes before drinking — this helps flush lead from your pipes.
ZIP Codes Served
Coverage: Service area ZIP codes sourced from EPA Community Water System Service Area Boundaries v3 (March 2026 release). These ZIPs reflect the actual deployment footprint recorded by PA or modeled from parcel and building-footprint data.
- 17821 - Danville
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Danville Municipal Water Authority (PA4470007) on EPA.gov.
Frequently Asked Questions
Is Danville Municipal Water Authority water safe to drink?
The accepted 2026Q2 ECHO snapshot shows no current noncompliance for Danville Municipal Water Authority; its 66 accepted 2021-2026 records are resolved or archived. Historical compliance status does not establish conditions at a specific tap.
How many people does Danville Municipal Water Authority serve?
Danville Municipal Water Authority serves approximately 4,992 people across 1 ZIP code in Pennsylvania.
Where does Danville Municipal Water Authority get its water?
The primary water source is surface water.
Federal UCMR5 PFAS Monitoring: Detected
This water system was tested under the federal EPA Unregulated Contaminant Monitoring Rule (UCMR5). PFAS compounds were detected below the current state-enforceable MCL.
Current MCL reflects the lowest state-enforceable limit (NYS 10 ppt for PFOA/PFOS, effective August 2020). The federal final MCL of 4 ppt for PFOA/PFOS (EPA April 2024 rule) is not enforceable until April 2029. Detections above 4 ppt but below 10 ppt are below current MCL but above the future federal limit.
Source: U.S. EPA UCMR5 (Unregulated Contaminant Monitoring Rule, 5th cycle) — per-system federal sampling, 2023–2025. EPA UCMR5 monitoring program →
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Danville Municipal Water Authority (PA): 1 Health Violation. https://zipcheckup.com/water-system/pa4470007/
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title = {{Danville Municipal Water Authority (PA): 1 Health Violation}},
year = {n.d.},
url = {https://zipcheckup.com/water-system/pa4470007/}
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What You Can Do
Test your water
Home test kits can detect lead, bacteria, and other contaminants at your tap. Find the right filter →
Check your specific ZIP code
Water quality can vary within a system. View nearest ZIP report →
Contact your utility
Danville Municipal Water Authority (EPA ID: PA4470007) - request the latest Consumer Confidence Report or ask about specific contaminants.