The Department of Health publishes potable-water quality standards covering physical, chemical and microbiological parameters. Use the official table to identify the applicable threshold, then use a dated laboratory or utility result to determine whether a particular sample met it.
Parameters include measures such as pH, turbidity, total dissolved solids, chloride, nitrate, coliform indicators and metals. A published limit does not show the condition of water at a particular tap or on a particular date.
Potable-water, utility treatment, bottled water, surface water and recreational water can be governed or monitored differently. Confirm the sample type, method, unit and applicable standard before calling a result compliant.
Keep the issuing agency, document date and parameter table with any extracted values. This page explains the source but does not replace a current laboratory report or local public-health notice.