RAH Consultancy were asked to provide an experts report with regard to a borehole system feeding a number of remote properties in the north of England. The family living on one of the properties were experiencing health problems and were concerned about quality of their water supply.Their solicitor engaged us to the inspect the water supply system, take water samples and instruct an approved laboratory on the required testing.We examined the bore hole and the associated pipework against the requirements of the "Manual on Treatment for Small Water Supply Systems" and "The Water Regulations Guide".Approximately 30 water samples were taken from various locations through the site using approved laboratory practice. iron stained water.The property owners concerns were verified as the problems with the quality of the water included an excessive level of iron. The ppm (parts per million) level was outside the limits of the current water quality regulations and was also causing unsightly staining to the plumbing fittings. The presence of excessive iron with a potable water system is a danger to health and can cause severe health problems.We provided a report on the borehole's non-compliance with water quality standards and produced a design for the rehabilitation of the supply, which include a new filtration system and a new testing and maintenance regime.