Brentwood Village Water Hardness & Quality Report (2026)
Water Hardness
7.6 grains per gallon
Source
river
pH Level
8
neutral = 7.0
Lead
0.008 mg/L
✓ Below action level
TDS
326.7 mg/L
Est. Daily Cost
$0.35
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 Brentwood Village, your appliances are currently losing 17% efficiency due to mineral buildup.
| Appliance | In Brentwood Village | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 5.3 yrs | 8.5 yrs | -38% |
| Washing Machine | 8.8 yrs | 12 yrs | -27% |
| Water Heater | 10.4 yrs | 15 yrs | -31% |
Regional Water Comparison
How Brentwood Village compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Brentwood Village, District of Columbia | 129.5 mg/L | 9 ppt | 🟠 Hard | river |
| Union Market, District of Columbia | 113.5 mg/L | 7.5 ppt | 🟡 Moderately Hard | river |
| H Street NE, District of Columbia | 113 mg/L | 7.5 ppt | 🟡 Moderately Hard | river |
| NoMa, District of Columbia | 113.5 mg/L | 7.5 ppt | 🟡 Moderately Hard | river |
| Northwest One, District of Columbia | 113.5 mg/L | 7.5 ppt | 🟡 Moderately Hard | river |
National Benchmark
How Brentwood Village compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Brentwood Village | 129.5 mg/L | 🟠 Moderate |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Brentwood Village's Water Unique?
Local geology and source profile
Brentwood Village, District of Columbia — a DC neighborhood adjacent to Brookland and Michigan Park in the northeast Washington District — receives its water from DC Water (DC WASA), drawing from the Potomac River through the mid-Atlantic distribution.
The moderately hard 129.5 mg/L hardness and TDS of 326.7 mg/L reflect the District of Columbia Potomac River supply's moderate calcareous character — the Precambrian Blue Ridge Gneiss provides insoluble dilution while Cambrian Tomstown Dolomite and Ordovician Beekmantown Limestone contribute dissolved mineral content from the Shenandoah Valley limestone belt upstream (compare Brookland DC: 127/320 in DC comparable; Michigan Park DC: 131/332 in DC comparable; Brentwood Village consistent moderate from the same DC Potomac River Precambrian-Cambrian calcareous supply). The Potomac watershed at DC — Precambrian Blue Ridge Gneiss (insoluble — primary dilutant), Cambrian Tomstown Dolomite (calcareous — primary hardness contributor), and Quaternary Potomac alluvium (calcareous — TDS contributor).
At 129.5 mg/L with TDS 327, Brentwood Village's water is moderately hard — mild scale buildup in appliances. Semi-annual descaling is appropriate. The PFAS level of 9.0 ppt is elevated — a certified drinking water filter with PFAS removal is recommended — the DC metro area military installations (Bolling AFB, JBA) and Potomac industrial sources contribute to elevated PFAS levels. Review DC Water's annual water quality report.
Geology & Source: Brentwood Village in District of Columbia draws from DC Water on the Potomac River (District of Columbia, mid-Atlantic region) — the Potomac at DC drains Precambrian Blue Ridge Gneiss (insoluble) and Cambrian Tomstown Dolomite (calcareous) — District of Columbia Potomac River Precambrian-Cambrian calcareous supply produces moderately hard water at 129.5 mg/L with TDS 326.7 mg/L.