Public water system record
Tarentum Boro Water Dept
Serves Tarentum, Allegheny County, PA · 4,927 people served
Federal records show 3 health-based violations and 17 monitoring/reporting issues for Tarentum Boro Water Dept in the last ten years. The most serious issue in this window was a Total Trihalomethanes (TTHMs) violation that EPA lists as archived, not resolved.
System profile
- Health-based violations, last 10 years
- 3
- Resolved
- 2
- Unresolved
- 0
- Archived by EPA
- 1
- Any acute record
- No
- Monitoring issues, last 10 years
- 17
Key facts
- Tarentum Boro Water Dept draws water from 1 surface water intake.
- Highest measured level in the last 10 years: Total Trihalomethanes (TTHMs), 0.1 mg/L, federal limit 0.08 mg/L (1.3 times the limit), 2025.
- Most recent formal enforcement: consent decree or court judgment by Pennsylvania, November 2005.
- Record on file since 1982, with 2 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 1,979 service lines.
Check whether Tarentum Boro Water Dept serves your address
Health-based violations
Since October 2016Violation data reflects EPA records through March 2026. For the most current status, visit the EPA ECHO database.
| Contaminant | Rule family | Start date | Status | Acute |
|---|---|---|---|---|
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.1 mg/L, federal limit 0.08 mg/L (1.3 times the limit)
|
220 | Oct 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.093 mg/L, federal limit 0.08 mg/L (1.2 times the limit)
|
220 | Apr 1, 2025 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.09 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
|
220 | Jan 1, 2025 | Resolved | No |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
Jan 1, 2026 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Surface Water Treatment Rule
Monitoring and reporting
|
Jan 1, 2026 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Chlorine
Monitoring and reporting
|
Jan 1, 2026 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Surface Water Treatment Rule
Monitoring and reporting
|
Dec 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Chlorine
Monitoring and reporting
|
Dec 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
Nov 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Surface Water Treatment Rule
Monitoring and reporting
|
Nov 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Chlorine
Monitoring and reporting
|
Nov 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
CARBON, TOTAL
Monitoring and reporting
|
Oct 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
Oct 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Surface Water Treatment Rule
Monitoring and reporting
|
Oct 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Chlorine
Monitoring and reporting
|
Oct 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Dalapon
Monitoring and reporting
|
Oct 1, 2023 | Resolved |
|
CARBON, TOTAL
Monitoring and reporting
|
Jul 1, 2022 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
Oct 1, 2019 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
Sep 1, 2019 | Resolved |
|
CARBON, TOTAL
Monitoring and reporting
|
Oct 1, 2017 | Resolved |
Full record since 1982
EPA's records for Tarentum Boro Water Dept go back to 1982. Before October 19, 2016 they list 2 health-based violations (1 resolved, 1 archived by EPA without a recorded fix) and 58 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1980s | 1 | 27 |
| 2000s | 0 | 25 |
| 2010 to October 18, 2016 | 1 | 6 |
| October 19, 2016 to 2019 | 0 | 3 |
| 2020s | 3 | 14 |
Most recent health-based violation before October 19, 2016: CARBON, TOTAL, began April 2010, Resolved.
Show all 2 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
CARBON, TOTAL
Treatment technique failure
|
Apr 1, 2010 | Resolved |
|
Endrin
Contaminant limit exceeded
|
May 31, 1984 | Archived |
Enforcement actions
Pennsylvania regulators took 6 formal enforcement actions against Tarentum Boro Water Dept in 2005. The most recent was a consent decree or court judgment in November 2005.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Nov 23, 2005 | Pennsylvania | Consent decree or court judgment | 4 violations: CARBON, TOTAL, Chlorine, Surface Water Treatment Rule, Interim Enhanced Surface Water Treatment Rule |
| Aug 9, 2005 | Pennsylvania | Consent decree or court judgment | 1 violation: CARBON, TOTAL |
| Aug 8, 2005 | Pennsylvania | Consent decree or court judgment | 3 violations: Surface Water Treatment Rule, Interim Enhanced Surface Water Treatment Rule, Chlorine |
| May 25, 2005 | Pennsylvania | Consent decree or court judgment | 1 violation: Surface Water Treatment Rule |
| May 19, 2005 | Pennsylvania | Consent decree or court judgment | 3 violations: Chlorine, CARBON, TOTAL, Interim Enhanced Surface Water Treatment Rule |
| Jan 31, 2005 | Pennsylvania | Consent decree or court judgment | 1 violation: CARBON, TOTAL |
What the violations mean
Total Trihalomethanes (TTHMs)
3 incidentsDisinfection byproduct levels exceeded the federal limit
Long-term TTHM exposure may increase bladder cancer risk
Where the water comes from
Tarentum Boro Water Dept draws water from 1 surface water intake. It also has an emergency connection to Brackenridge Boro Water Dept. 1 other community water system buys water from Tarentum Boro Water Dept.
Emergency or part-time connections to
- Brackenridge Boro Water Dept Brackenridge, PA
Community systems that buy water from it
- East Deer Twp Water Dept Creighton, PA
Annual water quality report
Tarentum Boro Water Dept must give its customers an annual water quality report (Consumer Confidence Report) by July 1, with the levels its tests found in the previous year.
Where the state allows it, systems serving fewer than 10,000 people may publish the report in a local newspaper or news site instead of mailing it, and must provide a copy on request.
Find a posted report with EPA's Consumer Confidence Report search
Testing your own water
To test the water at your tap, or a private well this record does not cover, use a laboratory certified for drinking water by Pennsylvania.
Certified drinking water labs by state EPA guidance for private wells