Antelope Water Hardness & Quality Report (2026)
Water Hardness
6.1 grains per gallon
Source
mixed
pH Level
7.9
neutral = 7.0
Lead
0.006 mg/L
✓ Below action level
TDS
349.3 mg/L
Est. Daily Cost
$0.28
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 Antelope, your appliances are currently losing 14% efficiency due to mineral buildup.
| Appliance | In Antelope | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 6.1 yrs | 8.5 yrs | -28% |
| Washing Machine | 9.7 yrs | 12 yrs | -19% |
| Water Heater | 11.4 yrs | 15 yrs | -24% |
Regional Water Comparison
How Antelope compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Antelope, California | 105 mg/L | 5.7 ppt | 🟡 Moderately Hard | mixed |
| Foothill Farms, California | 195 mg/L | 5.5 ppt | 🔴 Very Hard | mixed |
| North Highlands, California | ≈ 120–179 mg/L | 4.5 ppt | 🟠 Hard | groundwater |
| Citrus Heights, California | ≈ 0–60 mg/L | 0 ppt | 🟢 Soft | reservoir |
| Roseville, California | ≈ 120–179 mg/L | 0 ppt | 🟠 Hard | reservoir |
National Benchmark
How Antelope compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Antelope | 105 mg/L | 🟡 Low |
| USA National Avg | 151 mg/L | 🟠 Moderate |
| Scarsdale Top Rated | 0.02 mg/L | 🟢 None |
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What Makes Antelope's Water Unique?
Local geology and source profile
California American Water Company operates the Antelope system, serving approximately 34,406 residents in Sacramento County, California. The primary source is groundwater from deep wells tapping Sacramento Valley aquifers, with occasional supplementation by purchased surface water from the Sacramento Suburban Water District (SSWD). This surface water originates from Folsom Lake and is treated by the San Juan Water District. Treatment involves conventional filtration, disinfection with chlorine, and strong base ion-exchange (SBA-IX) for hexavalent chromium removal.
The watershed encompasses the Sacramento Valley groundwater basin and the American River watershed feeding Folsom Lake in the Sierra Nevada foothills. Aquifers are formed by thick alluvial fills including Pleistocene and Holocene deposits from the ancestral Sacramento River, overlying older Miocene-Pliocene marine and continental sediments such as the Laguna Formation. Prolonged contact with limestone and dolomite-rich strata imparts a moderately hard character to the groundwater, while Sierra Nevada-derived surface water is softer due to shorter contact with granitic terrain.
Moderately hard water can lead to moderate scale buildup in pipes, water heaters, dishwashers, and washing machines over time, reducing efficiency and lifespan. Faucets may show white deposits and laundry can feel stiff. Regular maintenance — deliming appliances annually, vinegar soaks for fixtures, and scale-inhibiting filters — helps mitigate issues. A water softener is typically not required but may suit heavy users or those with aesthetic preferences. The 2024–2025 Consumer Confidence Report confirms compliance with lead and copper rules; past hexavalent chromium concerns are addressed via ion-exchange treatment.
Geology & Source: Sacramento Valley — Quaternary alluvial and Tertiary Laguna Formation sediments over Miocene-Pliocene strata; prolonged limestone and dolomite contact yields moderate hardness; Folsom Lake supplement from Sierra Nevada granitic terrain is softer
Other California Water Reports
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Frequently Asked Questions
Is Antelope's water safe to drink?
Do I need a water softener in Antelope?
How does Antelope compare to the USA average?
Data Sources & Methodology
Water quality data for Antelope 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.