How does Baldwin Park's water compare to the national average?

The USA national average is 151 mg/L. Baldwin Park (≈ 180+ mg/L) is 189 mg/L harder than average.

Baldwin Park Water Hardness & Quality Report (2026)

Water Hardness

very hard

180+ mg/L

Very Hard

estimated · not lab-verified

Source

groundwater

pH Level

7.5

neutral = 7.0

Lead

0.003 mg/L

✓ Below action level

TDS

187.8 mg/L

Est. Daily Cost

$0.91

energy & soap waste

Source: See methodology section below · Updated 2026

very hard180+ mg/LVery Hard · est.

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 Baldwin Park, your appliances are currently losing 45% efficiency due to mineral buildup.

Appliance	In Baldwin Park	Soft Water City	Efficiency Loss
Kettle	4.7 yrs	8.5 yrs	-45%
Washing Machine	6.6 yrs	12 yrs	-45%
Water Heater	8.3 yrs	15 yrs	-45%

Regional Water Comparison

How Baldwin Park compares to its nearest neighbours

City	Hardness	PFAS (ppt)	Risk	Source
▶ Baldwin Park, California	≈ 180+ mg/L	0 ppt	🔴 Very Hard	groundwater
West Covina, California	≈ 180+ mg/L	66.2 ppt	🔴 Very Hard	reservoir
West Puente Valley, California	≈ 0–60 mg/L	3.7 ppt	🟢 Soft	mixed
Vincent, California	≈ 120–179 mg/L	6.8 ppt	🟠 Hard	mixed
Valinda, California	≈ 0–60 mg/L	3.2 ppt	🟢 Soft	mixed

National Benchmark

How Baldwin Park compares to the USA average

Benchmark	Hardness	Appliance Risk
▶ Baldwin Park	≈ 180+ mg/L	🔴 High
USA National Avg	151 mg/L	🟠 Moderate
Scarsdale Top Rated	0.02 mg/L	🟢 None

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What Makes Baldwin Park's Water Unique?

Local geology and source profile

Source: GroundwaterTDS: 187.8 mg/LpH: 7.5

Valley County Water District (VCWD) serves potable water to portions of Baldwin Park, Irwindale, West Covina, and Azusa in Los Angeles County, California. The utility sources its supply primarily from local groundwater wells tapping the San Gabriel Valley Groundwater Basin, supplemented by purchased surface water to meet seasonal demand. Standard disinfection and blending occur at utility facilities to meet state standards. VCWD's service area covers key industrial and residential zones across the urbanized San Gabriel Valley, providing treated water to communities throughout the basin.

The watershed encompasses the San Gabriel River drainage, fed by the San Gabriel Mountains, with recharge flowing into the underlying San Gabriel Valley Groundwater Basin. This basin comprises Quaternary alluvial fan deposits overlying older Tertiary sedimentary formations, with aquifers in permeable gravel and sand lenses. Calcium and magnesium are leached from carbonate-rich alluvium and from surrounding Paleozoic schists and Mesozoic granitic intrusions of the San Gabriel Mountains, imparting a hard water character with elevated dissolved solids typical of basin-fill aquifers in arid Southern California.

Very hard water promotes significant scale buildup in pipes, heaters, and fixtures, reducing efficiency and lifespan. Most affected are water heaters, dishwashers, washing machines, and coffee makers, where mineral deposits insulate heating elements and clog valves. Regular vinegar descaling, installing scale-inhibiting filters, or annual professional maintenance helps mitigate issues. A water softener is strongly recommended for very hard supplies to prevent damage and improve soap efficiency. The utility reports no MCL violations and meets federal copper and lead action levels; one contaminant exceeds an EPA health guideline (MCLG) within legal limits, and filters are advised for vulnerable groups. Treatment involves chlorination for disinfection with blending of groundwater and purchased supplies.

Geology & Source: San Gabriel Valley Groundwater Basin; Quaternary alluvial fan deposits from ancestral San Gabriel River; calcium/magnesium leached from Paleozoic schists and Mesozoic granitic San Gabriel Mountains — hard supply

Other California Water Reports

West Covina

≈ 180+ mg/L

🔴 Very Hard

West Puente Valley

≈ 0–60 mg/L

🟢 Soft

Vincent

≈ 120–179 mg/L

🟠 Hard

Valinda

≈ 0–60 mg/L

🟢 Soft

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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 Baldwin Park's water safe to drink?

Yes. Baldwin Park's water meets all federal safety standards. The hardness is ≈ 180+ mg/L (Very Hard), which is safe to drink. High hardness affects appliances and taste, but poses no health risk.

Do I need a water softener in Baldwin Park?

At ≈ 180+ mg/L (Very Hard), Baldwin Park's water will cause significant limescale on kettles, washing machines, and water heaters. A water softener or descaler is strongly recommended to extend appliance lifespan and reduce energy bills by up to 45%.

How does Baldwin Park compare to the USA average?

The USA national average is 151 mg/L. Baldwin Park (≈ 180+ mg/L) is 189 mg/L above the national average. The softest major city is Scarsdale at just 0.02 mg/L.

Data Sources & Methodology

Water quality data for Baldwin Park is derived from geographic and geological modelling of the surrounding region. No federal monitoring station data was available for this location.

Estimated

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.

Estimated

Estimated from regional geology and source water characteristics. pH is correlated with water hardness and local bedrock — values may differ from utility-reported figures.

Estimated

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.

Measured

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.

Modelled

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.

Calculated

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.