Warren Water Hardness & Quality Report (2026)
Water Hardness
2.4 grains per gallon
Source
reservoir
pH Level
7.3
neutral = 7.0
Lead
0.004 mg/L
✓ Below action level
TDS
79.9 mg/L
Est. Daily Cost
$0.11
energy & soap waste
Source: USGS Water Quality Portal · Updated 2026
0–60
mg/L
Soft
61–120
mg/L
Moderately Hard
121–180
mg/L
Hard
180+
mg/L
Very Hard
Appliance Damage Report
In Warren, your appliances are currently losing 5% efficiency due to mineral buildup.
| Appliance | In Warren | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 8.3 yrs | 8.5 yrs | -2% |
| Washing Machine | 12.1 yrs | 12 yrs | — |
| Water Heater | 14 yrs | 15 yrs | -7% |
Regional Water Comparison
How Warren compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Warren, Rhode Island | 40.5 mg/L | 6.5 ppt | 🟢 Soft | reservoir |
| Barrington, Rhode Island | 52 mg/L | 7.6 ppt | 🟢 Soft | reservoir |
| Bristol, Rhode Island | 59 mg/L | 8.3 ppt | 🟢 Soft | reservoir |
| Swansea, Massachusetts | 80.5 mg/L | 8.7 ppt | 🟡 Moderately Hard | reservoir |
| Seekonk, Massachusetts | 107 mg/L | 10.5 ppt | 🟡 Moderately Hard | reservoir |
National Benchmark
How Warren compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Warren | 40.5 mg/L | 🟢 None |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
Bring Badger-quality water to your Warren home
Shop water softeners on Amazon.com →
What Makes Warren's Water Unique?
Local geology and source profile
Warren, Rhode Island, in Bristol County — a Bristol County town adjacent to Barrington and Bristol on Narragansett Bay — receives its water from Providence Water Supply Board, drawing from Scituate Reservoir through the northwest Rhode Island distribution.
The very soft 40.5 mg/L hardness and low TDS of 79.9 mg/L reflect the Bristol County Scituate Reservoir supply's very soft character — the Precambrian Grenville Province gneiss and Carboniferous Rhode Island Formation are both highly insoluble crystalline formations contributing negligible dissolved minerals to the pristine Scituate watershed, one of the largest undeveloped watersheds in southern New England (compare Barrington RI: 38/75 in Bristol County comparable; Bristol RI: 42/84 in Bristol County comparable; Warren consistent very soft from the same Bristol County Scituate Reservoir Precambrian insoluble supply). The Scituate watershed — Precambrian Grenville Province gneiss (insoluble — primary dilutant), Carboniferous Rhode Island Formation (insoluble — secondary dilutant), and Quaternary glacial outwash (slightly calcareous — minimal TDS).
At 40.5 mg/L with TDS 80, Warren's water is very soft — minimal scale buildup. Soft water can be corrosive — check for blue-green copper staining in older plumbing. The PFAS level of 6.5 ppt warrants a certified drinking water filter given the Bristol County Rhode Island industrial sources. Review Providence Water Supply Board's annual report.
Geology & Source: Warren in Bristol County draws from the Providence Water on Scituate Reservoir (Bristol County, northwest Rhode Island) — the Scituate watershed drains Precambrian Grenville Province gneiss (insoluble) and Carboniferous Rhode Island Formation (insoluble) — Rhode Island Bristol County Scituate Reservoir Precambrian insoluble supply produces very soft water at 40.5 mg/L with TDS 79.9 mg/L.