Environmental Metrics

Water, soil and noise pollution signals — measured worldwide, updated continuously.

Water Quality

Reference values· WHO / EPA guideline values

pH Level

good

7.4

Target: 6.5 – 8.5 (WHO/EPA)

Drinking-water acidity is balanced; safe for human consumption and pipeline integrity.

Turbidity

good

0.6 NTU

Target: < 1 NTU drinking · < 5 NTU usage

Suspended-particle clarity. Low turbidity indicates effective filtration.

Dissolved Oxygen

good

6.8 mg/L

Target: > 5 mg/L for aquatic life

Oxygen available to fish and microorganisms; supports a healthy aquatic ecosystem.

Illustrative 7-Day Water Quality Index (WQI) Pattern

No open global API publishes municipal water-quality readings; these are WHO/EPA reference thresholds and a representative pattern, not live sensor data.

Soil Health

Reference values· FAO / EPA guideline values

Soil pH

good

6.7

Target: 6.0 – 7.5 for crops

Optimal acidity for nutrient uptake by most crops and garden plants.

Heavy Metals

moderate

Pb 38 · Cd 1.4 mg/kg

Target: Pb < 70 · Cd < 3 mg/kg

Lead & cadmium below regulatory threshold but trending upward near roadways.

NPK Levels

moderate

N 24 · P 18 · K 56

Target: Balanced 40·40·40 (kg/ha)

Nitrogen and phosphorus showing signs of depletion; potassium near optimal.

Regional Soil Toxicity / Degradation (FAO reported trend)

Values reflect published FAO/EPA guideline thresholds and reported regional trends — not live per-location soil sensors.

Noise Pollution

Reference values· WHO environmental noise guidelines

Daytime Decibels

moderate

62 dB

Target: ≤ 55 dB residential (WHO)

Average daytime exposure near residential boundary slightly above safe limit.

Nighttime Decibels

moderate

48 dB

Target: ≤ 45 dB to prevent sleep disruption

Above WHO nocturnal guideline — risk of sleep fragmentation and stress over time.

Typical 24-Hour Decibel Profile (urban model)

Modelled urban traffic/noise curve against WHO limits — PollutIQ has no live decibel sensor network yet.