Public water system record
Slatersville Public Supply
Serves an area of Providence County, RI · 3,403 people served
Federal records show 2 health-based violations and 1 monitoring/reporting issue for Slatersville Public Supply 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
- 2
- Resolved
- 0
- Unresolved
- 0
- Archived by EPA
- 2
- Any acute record
- No
- Monitoring issues, last 10 years
- 1
Key facts
- Slatersville Public Supply buys its water from Woonsocket Water Division.
- Highest measured level in the last 10 years: Total Trihalomethanes (TTHMs), 0.0895 mg/L, federal limit 0.08 mg/L (1.1 times the limit), 2025.
- Most recent enforcement action: boil water order by Rhode Island, September 1995.
- Record on file since 1992, with 6 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 532 service lines.
Check whether Slatersville Public Supply 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 0.0895 mg/L, federal limit 0.08 mg/L (1.1 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 0.0815 mg/L, federal limit 0.08 mg/L (at or just above the limit)
|
220 | Jul 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Lead and Copper Rule
Monitoring and reporting
|
Oct 1, 2023 | Resolved |
Full record since 1992
EPA's records for Slatersville Public Supply go back to 1992. Before October 19, 2016 they list 6 health-based violations (6 resolved) and 10 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 3 | 2 |
| 2000s | 3 | 7 |
| 2010 to October 18, 2016 | 0 | 1 |
| 2020s | 2 | 1 |
Most recent health-based violation before October 19, 2016: Total Coliform, began August 2008, Resolved.
Show all 6 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Coliform
Contaminant limit exceeded
|
Aug 1, 2008 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Dec 1, 2005 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Oct 1, 2004 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Aug 1, 1998 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Sep 1, 1995 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Mar 1, 1994 | Resolved |
Enforcement actions
Rhode Island regulators issued 1 boil water order to Slatersville Public Supply in 1995, filed as 2 records in EPA's data. The most recent was a boil water order in September 1995.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Sep 29, 1995 | Rhode Island | Boil water order | 2 violations (2 health-based): Total Coliform |
What the violations mean
Total Trihalomethanes (TTHMs)
2 incidentsDisinfection byproduct levels exceeded the federal limit
Long-term TTHM exposure may increase bladder cancer risk
Where the water comes from
Slatersville Public Supply buys its water from Woonsocket Water Division. It lists no wells or intakes of its own.
Buys water from
- Woonsocket Water Division Woonsocket, RI
Annual water quality report
Slatersville Public Supply 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 Rhode Island.
Certified drinking water labs by state EPA guidance for private wells