Auburn Water Hardness & Quality Report (2026)
Water Hardness
~120–179 mg/L
Hardestimated · not lab-verified
Source
reservoir
pH Level
7.7
neutral = 7.0
Lead
0.006 mg/L
✓ Below action level
TDS
197.9 mg/L
Est. Daily Cost
$0.40
energy & soap waste
Source: See methodology section below · 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 Auburn, your appliances are currently losing 20% efficiency due to mineral buildup.
| Appliance | In Auburn | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 6.8 yrs | 8.5 yrs | -20% |
| Washing Machine | 9.6 yrs | 12 yrs | -20% |
| Water Heater | 12 yrs | 15 yrs | -20% |
Regional Water Comparison
How Auburn compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Auburn, Massachusetts | ≈ 120–179 mg/L | 52.6 ppt | 🟠 Hard | reservoir |
| Millbury, Massachusetts | ≈ 0–60 mg/L | 128.6 ppt | 🟢 Soft | reservoir |
| Worcester, Massachusetts | 24.1 mg/L | 3.2 ppt | 🟢 Soft | reservoir |
| Leicester, Massachusetts | ≈ 120–179 mg/L | 7.7 ppt | 🟠 Hard | reservoir |
| Charlton, Massachusetts | ≈ 120–179 mg/L | 11.5 ppt | 🟠 Hard | reservoir |
National Benchmark
How Auburn compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Auburn | ≈ 120–179 mg/L | 🟠 Moderate |
| USA National Avg | 151 mg/L | 🟠 Moderate |
| Scarsdale Top Rated | 0.02 mg/L | 🟢 None |
Bring Scarsdale-quality water to your Auburn home
Shop water softeners on Amazon.com →
What Makes Auburn's Water Unique?
Local geology and source profile
The Auburn Water District (PWS ID #2017000) serves the town of Auburn, Massachusetts, in Worcester County, providing drinking water to residents and businesses throughout the area. The utility draws exclusively from local groundwater wells within the Quinebaug River Basin, with no surface water sources. Water undergoes treatment at district facilities, including chemical pH adjustment to control corrosion and minimize lead and copper leaching from household plumbing, along with filtration to reduce iron, manganese, and arsenic levels prior to distribution through the municipal network.
The supply originates within the Quinebaug River Basin, where water percolates through glacial deposits and underlying Paleozoic bedrock formations including schists, gneisses, and minor limestones of the Worcester Basin — part of the Carboniferous Worcester Coal Basin — and older metamorphic rocks of the Marlboro Formation. These Pleistocene sands, gravels, and tills overlie calcium- and magnesium-rich sedimentary strata, yielding a hard supply from prolonged mineral contact without extreme dissolved solids.
Hard water in Auburn leads to scale buildup on faucets, showerheads, and inside water heaters and pipes, reducing the efficiency and lifespan of appliances like dishwashers and washing machines. Laundry may appear dingy and soap scum can form on skin and hair. Regular deliming of fixtures and annual flushing of water heaters is advised; a water softener is recommended to mitigate these effects and protect plumbing. PFAS, including PFOA, has been detected in some local supplies, and monitoring shows 6 contaminants exceeding EPA health guidelines — certified filtration is advisable.
Geology & Source: Glacial drift aquifers over Carboniferous Worcester Coal Basin and Marlboro Formation metamorphic rocks; Pleistocene sands, gravels, and tills with limestone and dolomite bedrock yield hard groundwater
Other Massachusetts Water Reports
Report an Issue
Notice an error or missing data? Help us keep this page accurate. If you spot incorrect water hardness, outdated utility info, or missing details, please let us know.
All reports are reviewed by our team. Thank you for supporting data quality!
Frequently Asked Questions
Is Auburn's water safe to drink?
Do I need a water softener in Auburn?
How does Auburn compare to the USA average?
Data Sources & Methodology
Water quality data for Auburn is derived from geographic and geological modelling of the surrounding region. No federal monitoring station data was available for this location.
Water Hardness
Modelled estimate based on state-level USGS geological survey data for this region. No direct USGS Water Quality Portal measurement was matched to this city — the value reflects a statistical range calibrated to the state's dominant rock types and typical source water characteristics.
pH
Estimated from regional geology and source water characteristics. pH is correlated with water hardness and local bedrock — values may differ from utility-reported figures.
TDS — Total Dissolved Solids
Estimated using a derived ratio from water hardness and regional conductance profiles. TDS in natural water correlates strongly with total mineral content including hardness ions.
PFAS — Perfluoroalkyl and Polyfluoroalkyl Substances
EPA UCMR5 (5th Unregulated Contaminant Monitoring Rule, 2023–2025) — sum of PFAS compounds detected at the public water system serving this city. A value of 0 indicates the system was sampled with no detection above reporting limits.
Lead
Modelled estimate based on the EPA Lead and Copper Rule 90th-percentile tap-sample methodology. No publicly available per-city lead dataset with sufficient national coverage exists. Values are a conservative baseline derived from city population tier and infrastructure age — all estimates are maintained below the EPA action level of 0.015 mg/L.
Appliance Lifespan
Calculated from water hardness using a linear degradation model. Baseline lifespans represent soft-water performance (kettle: 8.5 yrs, washing machine: 12.0 yrs, water heater: 15.0 yrs). Hard water mineral scale progressively reduces operational life in direct proportion to hardness concentration.