Tap Water Quality Report
Tap water quality in PROVIDENCE, Rhode Island
Tap water in PROVIDENCE, Rhode Island receives a grade of C (75/100) from TapWaterSafety.org. It's served by PROVIDENCE-CITY OF. The most significant water quality concerns are: Total trihalomethanes (TTHMs) significantly above health guideline; Haloacetic acids (HAA9) significantly above health guideline; Haloacetic acids (HAA5) significantly above health guideline. Data sources: EPA SDWIS, EPA ECHO, EWG Tap Water Database.
What's in PROVIDENCE's tap water
Top water quality concerns identified by the EPA and Environmental Working Group across the utility serving PROVIDENCE.
Total trihalomethanes (TTHMs) significantly above health guideline
Moderate concernTotal trihalomethanes (TTHMs) detected at 55.2 ppb, 368x above the EWG health guideline of 0.15 ppb.
Haloacetic acids (HAA9) significantly above health guideline
Moderate concernHaloacetic acids (HAA9) detected at 19.5 ppb, 324x above the EWG health guideline of 0.06 ppb.
Haloacetic acids (HAA5) significantly above health guideline
Moderate concernHaloacetic acids (HAA5) detected at 18.4 ppb, 184x above the EWG health guideline of 0.1 ppb.
EPA compliance record
Official U.S. EPA records for PROVIDENCE-CITY OF (system ID RI1592024) for the last 3 years. Checked 2026-10-07.
| Rule | Type | Since | Status |
|---|---|---|---|
| Stage 1 Disinfectants and Disinfection Byproducts Rule | Missed testing or reporting | 01/01/2024 | Open |
| Interim and Long Term 1 Enhanced Surface Water Treatment Rule | Other (e.g. public notice) | 11/22/2024 | Open |
Source: U.S. EPA Enforcement and Compliance History Online (ECHO), from the Safe Drinking Water Information System. See EPA's full report.
Recommended filters for PROVIDENCE
Filters matched to the specific contaminants in PROVIDENCE's water supply.
Carbon filter certified for VOCs (NSF/ANSI 53)
$180-$599Activated carbon is effective for disinfection byproducts like TTHM. Look for NSF/ANSI 53 VOC or chloroform reduction.
Disclosure: TapWaterSafety earns a commission from purchases made through these links. This does not influence our scoring methodology or filter selection.
All contaminants detected in PROVIDENCE's tap water
Every contaminant identified, compared side-by-side against US EPA legal limits, the EU Drinking Water Directive (2020/2184), WHO Guidelines, and California's Public Health Goal. Why we show multiple standards →
| Contaminant | Detected | EWG US health-based |
EPA US legal |
EU DWD Europe |
WHO global |
CA PHG strictest US |
Tested sample year |
Status |
|---|---|---|---|---|---|---|---|---|
| Total trihalomethanes (TTHMs) Disinfection byproduct |
55.2 ppb | 0.15 | 80.0 | 100 | — | — | — | 368× over |
| Haloacetic acids (HAA9) Disinfection byproduct |
19.5 ppb | 0.06 | — | — | — | — | — | 324× over |
| Haloacetic acids (HAA5) Disinfection byproduct |
18.4 ppb | 0.1 | 60.0 | 60 | — | — | — | 184× over |
| Chloroform Disinfection byproduct |
49.3 ppb | 0.4 | — | — | — | — | — | 123× over |
| Dichloroacetic acid Disinfection byproduct |
15.0 ppb | 0.2 | — | — | — | — | — | 75× over |
| Bromodichloromethane Disinfection byproduct |
4.09 ppb | 0.06 | — | — | — | — | — | 68× over |
| Trichloroacetic acid Disinfection byproduct |
1.63 ppb | 0.1 | — | — | — | — | — | 16× over |
| Dibromochloromethane Disinfection byproduct |
0.745 ppb | 0.1 | — | — | — | — | — | 7.4× over |
| Chromium (hexavalent) Heavy metal |
0.00388 ppb | 0.02 | — | — | — | — | — | Below guideline |
| Nitrate Inorganic |
0.02 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | Below guideline |
| Monochloroacetic acid Disinfection byproduct |
1.72 ppb | 53.0 | — | — | — | — | — | Below guideline |
| Barium Heavy metal |
8.67 ppb | 700.0 | 2000.0 | — | 1300 | 2000 | — | Below guideline |
| Vanadium Other |
0.227 ppb | 21.0 | — | — | — | — | — | Below guideline |
| Manganese Heavy metal |
0.795 ppb | 100.0 | — | 50 | 80 | — | — | Below guideline |
| Strontium Radiological |
0.0273 ppb | 1500.0 | — | — | — | — | — | Below guideline |
| 4-Androstene-3,17-dione Other |
0.13 ppt | — | — | — | — | — | — | Below guideline |
| Fluoride Inorganic |
0.349 ppm | — | 4.0 | 1.5 | 1.5 | — | — | Below guideline |
All values in the unit of the detected level. Red cells indicate the detected level exceeds that standard. Some contaminants have limits in some jurisdictions but not others (shown as —). The "Tested" column shows the year each contaminant sample was collected.
Sources: US EPA, EU Drinking Water Directive 2020/2184, WHO Guidelines, California OEHHA PHGs, EWG Tap Water Database.
Treatment plant contact info
For service issues, water quality concerns, or to request a Consumer Confidence Report from PROVIDENCE-CITY OF.