Dickinson Water Hardness & Quality Report (2026)
Water Hardness
~120–179 mg/L
Hardestimated · not lab-verified
Source
reservoir
pH Level
8.4
neutral = 7.0
Lead
0.009 mg/L
✓ Below action level
TDS
1550 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 Dickinson, your appliances are currently losing 20% efficiency due to mineral buildup.
| Appliance | In Dickinson | 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 Dickinson compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Dickinson, North Dakota | ≈ 120–179 mg/L | 0 ppt | 🟠 Hard | reservoir |
| Williston, North Dakota | ≈ 120–179 mg/L | 0 ppt | 🟠 Hard | reservoir |
| Mandan, North Dakota | ≈ 180+ mg/L | 0 ppt | 🔴 Very Hard | reservoir |
| Bismarck, North Dakota | 132 mg/L | 0 ppt | 🟠 Hard | mixed |
| Minot, North Dakota | 150 mg/L | 0 ppt | 🟠 Hard | groundwater |
National Benchmark
How Dickinson compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Dickinson | ≈ 120–179 mg/L | 🟠 Moderate |
| USA National Avg | 151 mg/L | 🟠 Moderate |
| Scarsdale Top Rated | 0.02 mg/L | 🟢 None |
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What Makes Dickinson's Water Unique?
Local geology and source profile
The City of Dickinson, North Dakota, operates a municipal water utility serving Stark County and surrounding areas. The city's water supply is drawn from groundwater sources, primarily the Dakota Aquifer system. Treatment and distribution are managed by the City of Dickinson Public Works Department, with the Environmental Compliance Specialist overseeing water quality and regulatory compliance. The City publishes an annual Consumer Confidence Report (CCR); the 2024 CCR confirms compliance with Safe Drinking Water Act standards. Residents with water quality concerns may contact the Public Works Department at 1-701-456-7979 or the EPA's Safe Drinking Water Hotline at 1-800-426-4791.
Dickinson's water originates from deep Cretaceous-age aquifers comprising sandstones and shales within the Dakota Aquifer system. These geological formations contain naturally occurring carbonate minerals. As groundwater percolates through these formations over extended periods, it dissolves calcium and magnesium compounds, resulting in a hard water supply characteristic of the northern Great Plains. The aquifer geology directly explains why Dickinson's supply exhibits hard water chemistry, with prolonged underground residence times allowing significant mineral dissolution.
At the hard hardness level, Dickinson residents can expect scale buildup in water heaters, kettles, and pipes; increased soap consumption for cleaning; and potential stiffness in laundered fabrics. Water heaters and hot-water appliances are most affected. Homeowners may benefit from point-of-use softening for drinking water or whole-house softening systems to reduce maintenance costs and extend appliance lifespan. The 2024 CCR confirms compliance with Safe Drinking Water Act standards, with testing covering microbial contaminants, disinfection byproducts (TTHMs), inorganic chemicals, and other regulated parameters.
Geology & Source: Dakota Aquifer — Cretaceous-age sandstones and shales; prolonged contact with carbonate-rich formations dissolves calcium and magnesium, producing hard supply typical of northern Great Plains
Other North Dakota Water Reports
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Frequently Asked Questions
Is Dickinson's water safe to drink?
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How does Dickinson compare to the USA average?
Data Sources & Methodology
Water quality data for Dickinson 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.