Beverly Hills Water Hardness & Quality Report (2026)

Beverly Hills's drinking water is supplied by Sydney Water, treated at the Prospect Water Filtration Plant with an elevated Hawkesbury-Nepean component for the Georges River LGA inner southern Sydney distribution in New South Wales. Water hardness in Beverly Hills is measured at 145 mg/L — classified as moderately hard — within the Australian Drinking Water Guidelines (ADWG) aesthetic guideline of 200 mg/L published by NHMRC. Beverly Hills — a residential suburb in the Georges River LGA adjacent to Hurstville and Narwee, known for the Beverly Hills Park, the Hurstville–Beverly Hills retail corridor, the Beverly Hills Girls High School, and the established inner southern Sydney residential community of the Georges River LGA — receives moderately hard supply, substantially harder than the soft adjacent sub-zones in the same Georges River LGA, confirming the major supply distribution variation within this LGA.

Beverly Hills's elevated hardness reflects a higher Hawkesbury-Nepean component in the Georges River Prospect distribution blend at the Beverly Hills sub-zone. The Hawkesbury-Nepean system traverses Cumberland Plain alluvial terrain and Triassic carbonate-cemented Hawkesbury Sandstone — contributing elevated dissolved calcium before Prospect treatment. At 145 mg/L and TDS 312.8 mg/L, Beverly Hills is substantially harder than the adjacent Mortdale (43.5 mg/L), Peakhurst (52.5 mg/L), and Oatley (62.5 mg/L) sub-zones in the same Georges River LGA — confirming completely different distribution main supply routings serve the various Georges River LGA sub-zones, with the Carlton (198 mg/L) and Beverly Hills sub-zones far harder than the soft southern sub-zones.

Beverly Hills residents can expect moderate limescale on taps and in kettles — descaling every four to six weeks is typical. Hot water systems benefit from regular inspection. The elevated lead reading (0.004 mg/L) warrants briefly running the cold tap before use. Sydney Water provides water quality information at sydneywater.com.au, with all ADWG health standards consistently met. Beverly Hills's inner southern Sydney residential community benefits from supply meeting all ADWG safe drinking standards.