General inspection items

Is there any evidence of erosion, channeling, ponding (were not desirable) or other poor hydraulic performance?

Is there any evidence of accidental spillages, oils, poor water quality, odors or nuisance insects?

Have any health and safety risks been identified to either the public or maintenance operatives?

Is there any deterioration in the surface of permeable or porous surfaces (e.g. rutting, spreading of blocks or signs of ponding water)?

Silt/sediment accumulation

Is there any sediment accumulation at inlets (or other defined accumulation zones such as the surface of filter drains or infiltration basins and within proprietary devices)?

State depth (mm) and extent

Is removal required?

State waste disposal requirements and confirm that all waste management requirements have been complied with (consult environmental regulator)

Is surface clogging visible (potentially problematic where water has to soak into the underlying construction or ground (e.g. underdrained swale or infiltration basin)?

Does permeable or porous surfacing require sweeping to remove silt?

System blockages and litter build-up

Is there evidence of litter accumulation in the system?

Is this a blockage risk?

Is there any evidence of any other clogging or blockage of outlets or drainage paths?


Is the vegetation condition unsatisfactory (density, weed growth, coverage, etc)? (Check against approved planting regime.)

Does any part of the system require weeding, pruning or mowing? (Check against maintenance frequency stated in approved design.)

Is there any evidence of invasive species becoming established? (If yes, State action required)


Are any check dams or weirs in bad condition?

Is there evidence of any accidental damage to the system (e.g. wheel ruts?)

Is there any evidence of cross-connections or other unauthorized inflows?

Is there any evidence of tampering with the flow controls?

Are there any other matters that could affect the performance of the system in relation to the design objectives for hydraulic, water quality, biodiversity and visual aspects? (Specify.)


Observations and Recommendations

Proposed date for next inspection
Full name and signature of the personnel
Please note that this checklist is a hypothetical example and provides basic information only. It is not intended to take the place of, among other things, workplace, health and safety advice; medical advice, diagnosis, or treatment; or other applicable laws. You should also seek your own professional advice to determine if the use of such checklist is permissible in your workplace or jurisdiction.