Troy Water Hardness & Quality Report (2026)
Water Hardness
~120–179 mg/L
Hardestimated · not lab-verified
Source
groundwater
pH Level
7.6
neutral = 7.0
Lead
0.002 mg/L
✓ Below action level
TDS
203 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 Troy, your appliances are currently losing 20% efficiency due to mineral buildup.
| Appliance | In Troy | 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 Troy compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Troy, Missouri | ≈ 120–179 mg/L | 0 ppt | 🟠 Hard | groundwater |
| Wentzville, Missouri | ≈ 180+ mg/L | 0 ppt | 🔴 Very Hard | groundwater |
| Lake Saint Louis, Missouri | ≈ 120–179 mg/L | 4.6 ppt | 🟠 Hard | river |
| O'Fallon, Missouri | ≈ 180+ mg/L | 11.7 ppt | 🔴 Very Hard | river |
| Dardenne Prairie, Missouri | ≈ 180+ mg/L | 8.5 ppt | 🔴 Very Hard | river |
National Benchmark
How Troy compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Troy | ≈ 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 Troy home
Shop water softeners on Amazon.com →
What Makes Troy's Water Unique?
Local geology and source profile
LINCOLN COUNTY PWSD 2 provides drinking water for about 875 residents in Troy, Missouri. The utility draws its supply from groundwater wells that tap into local aquifers within Lincoln County. While specific treatment plant names aren't provided, the water is processed at facilities managed by the public water supply district. Lincoln County PWSD 1 also serves the area, utilizing similar groundwater sources. The watershed for Troy's supply consists of the local groundwater recharge areas in the upland regions of Lincoln County, which feed into the Ozark Plateaus aquifer system.
The region's geology features Paleozoic limestones and dolomites from the Mississippian age, like the Burlington and Keokuk limestones. Overlying these are the karstic Springfield Plateau layers from the Pennsylvanian age. These carbonate-rich rocks naturally transfer minerals to rainwater as it infiltrates through the fractured and cavernous formations. This geological dissolution process, characteristic of Missouri's northern karst areas, is responsible for the mineralization and hardness of the groundwater.
Homeowners in Troy may notice scale buildup in appliances like water heaters, dishwashers, and washing machines, which can reduce their efficiency and lifespan. Visible deposits might appear on faucets and kettles, and laundry may feel stiff unless a softener is used. Regular descaling with vinegar can help maintain appliances. Considering a water softener is often recommended for households experiencing issues like spotted dishes or dry skin, as these systems protect plumbing and improve the lathering of soaps and detergents. Public supplies here generally meet EPA standards, with recent assessments indicating good quality.
Geology & Source: Ozark Plateaus aquifer system; Mississippian limestones and Pennsylvanian dolomites; soluble carbonate rocks dissolve calcium and magnesium, leading to hard water
Other Missouri 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 Troy's water safe to drink?
Do I need a water softener in Troy?
How does Troy compare to the USA average?
Data Sources & Methodology
Water quality data for Troy 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.