# getAcidDrainageIndicators

> Acid drainage indicators from usable, uncensored results: net alkalinity (total alkalinity − total acidity, both as CaCO₃; negative = net acidic) and the sulfate/chloride mass ratio. Each field is present only when its inputs are (and chloride is above 0).

> **getAcidDrainageIndicators**(`sample`): [`AcidDrainageIndicators`](/utils/api/type-aliases/AcidDrainageIndicators)

Acid drainage indicators from usable, uncensored results: net alkalinity
(total alkalinity − total acidity, both as CaCO₃; negative = net acidic)
and the sulfate/chloride mass ratio. Each field is present only when its
inputs are (and chloride is above 0).

## Parameters

### sample

`WaterSample`

## Returns

[`AcidDrainageIndicators`](/utils/api/type-aliases/AcidDrainageIndicators)