Water Quality Report · Updated May 12, 2026
WARWICK-CITY OF
WARWICK-CITY OF delivers tap water graded D (59/100) by TapWaterSafety.org. The utility serves approximately 73,289 residents in WARWICK, Rhode Island using surface water (purchased). The most significant water quality concerns are: PFAS contamination; Total trihalomethanes (TTHMs) significantly above health guideline; Haloacetic acids (HAA9) significantly above health guideline; Haloacetic acids (HAA5) significantly above health guideline. For questions, the utility can be reached at 401-921-9798.
Is WARWICK tap water safe to drink?
WARWICK-CITY OF delivers tap water that earns a grade of D (59/100) from TapWaterSafety.org — a below-average rating, with multiple concerns including pfas contamination.
The utility serves 73,289 residents in WARWICK, drawing from surface water (purchased).
Public testing data identifies 9 contaminants in this water above EWG's health-based guidelines, including: Total trihalomethanes (TTHMs), Haloacetic acids (HAA9), Haloacetic acids (HAA5), Chloroform, Dichloroacetic acid, Bromodichloromethane, Trichloroacetic acid, Dibromochloromethane, Dibromoacetic acid. For most residents, a properly certified home filter at the kitchen tap is the most cost-effective way to reduce exposure to whatever's in your water. See our filter recommendations below, matched specifically to this utility's contaminant profile.
Quick actions for WARWICK residents
Top concerns in this water
Based on the most recent EPA and EWG data, these are the most significant water quality issues for WARWICK-CITY OF.
PFAS contamination
Severe concernPerfluorooctanoic acid (PFOA) detected. PFAS are persistent chemicals linked to cancer and immune effects with no known safe exposure threshold.
Total trihalomethanes (TTHMs) significantly above health guideline
Moderate concernTotal trihalomethanes (TTHMs) detected at 43.4 ppb, 289x above the EWG health guideline of 0.15 ppb.
Haloacetic acids (HAA9) significantly above health guideline
Moderate concernHaloacetic acids (HAA9) detected at 16.6 ppb, 277x above the EWG health guideline of 0.06 ppb.
Haloacetic acids (HAA5) significantly above health guideline
Moderate concernHaloacetic acids (HAA5) detected at 15.7 ppb, 157x above the EWG health guideline of 0.1 ppb.
Contact WARWICK-CITY OF
Reach the utility directly for service issues, water quality concerns, or to request your Consumer Confidence Report.
General Contact
Recommended water filters for WARWICK
Filters matched to the specific contaminants in this water supply.
Reverse Osmosis or NSF P473 certified carbon
$80-$750Activated carbon and RO are the only technologies proven to remove PFAS at certified levels.
Carbon block (NSF/ANSI 42 + 53)
$40-$750Activated carbon is highly effective for disinfection byproducts like TTHM and HAA5.
Disclosure: TapWaterSafety earns a commission from purchases made through these links. This does not influence our scoring methodology or filter selection.
Score breakdown
This utility's overall score of 59/100 breaks down across five weighted components. Read the full methodology →
Contaminants detected — international standards comparison
Every contaminant detected, compared side-by-side against US EPA legal limits, the EU Drinking Water Directive (2020/2184), WHO Guidelines, and California's Public Health Goal (the strictest US benchmark). 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 |
43.4 ppb | 0.15 | 80.0 | 100 | — | — | — | 289× over |
| Haloacetic acids (HAA9) Disinfection byproduct |
16.6 ppb | 0.06 | — | — | — | — | — | 277× over |
| Haloacetic acids (HAA5) Disinfection byproduct |
15.7 ppb | 0.1 | 60.0 | 60 | — | — | — | 157× over |
| Chloroform Disinfection byproduct |
39.5 ppb | 0.4 | — | — | — | — | — | 99× over |
| Dichloroacetic acid Disinfection byproduct |
13.1 ppb | 0.2 | — | — | — | — | — | 65× over |
| Bromodichloromethane Disinfection byproduct |
3.47 ppb | 0.06 | — | — | — | — | — | 58× over |
| Trichloroacetic acid Disinfection byproduct |
2.21 ppb | 0.1 | — | — | — | — | — | 22× over |
| Dibromochloromethane Disinfection byproduct |
0.293 ppb | 0.1 | — | — | — | — | — | 2.9× over |
| Dibromoacetic acid Disinfection byproduct |
0.0804 ppb | 0.03 | — | — | — | — | — | 2.7× over |
| Perfluorooctanoic acid (PFOA) PFAS |
0.085 ppt | 0.09 | 4.0 | 100 | 100 | 0.007 | — | Below guideline |
| 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 |
| Chlorate Disinfection byproduct |
6.63 ppb | 210.0 | — | — | — | — | — | Below guideline |
| Manganese Heavy metal |
1.45 ppb | 100.0 | — | 50 | 80 | — | — | Below guideline |
| Barium* Heavy metal |
8.67 ppb | 700.0 | 2000.0 | — | 1300 | 2000 | — | Below guideline |
| Vanadium Other |
0.205 ppb | 21.0 | — | — | — | — | — | Below guideline |
| Monochloroacetic acid Disinfection byproduct |
0.346 ppb | 53.0 | — | — | — | — | — | Below guideline |
| Strontium Radiological |
0.0312 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 (4th ed.), California OEHHA PHGs, EWG Tap Water Database.
WARWICK-CITY OF service area
This water system serves 1 community in Kent County, Rhode Island. Click any city for its dedicated tap water quality page.
Find the right filter for WARWICK water
Browse filter categories by water-quality concern. Each option below is NSF-certified for the matched contaminant type.