Activity Group: Water Supply consultation and funding challenges have now been resolved and the required changes are planned. Major upgrades to the treatment plants serving Blenheim and Picton were completed in 2012 and 2017 respectively and the standards are now being met in these areas. The DWSNZ requirements are very detailed, and include bacteriological, Speeds protozoal, chemical, radiological and physical parameters. A thorough sampling Road Filtration, UV, regime for the source water, treatment plant and the distribution network is also bores(3) chlorination required under the standard. Picton 62 2,110 and pH Yes Barnes correction. The detection of E.coli bacteria is a reliable and readily detected indicator of Dam (river) bacteriological contamination. E.coli is a bacteria found in the gut of all warm Kaituna blooded animals. Scrupulous sampling techniques are required to ensure Havelock bores (2) 10 337 Chlorination No5 representative samples are collected from the treatment plants and the distribution network. Council takes more than 2,000 water samples every year to monitor the Terrace Chlorination water quality. Early detection of E.coli immediately triggers an investigative Renwick Road 17 858 and pH No sampling programme of the area of supply to verify the initial result and the extent bores (3) correction of the contamination. If contamination is confirmed, an emergency disinfection and flushing programme is initiated to clear the supply, and an advisory ‘Boil Water Riverlands Malthouse 11 142 No: micro- Notice’ is issued to all affected customers. The procedures are maintained until Rd bore - biological three consecutive days of negative samples indicate the problem has been Wairau resolved. Valley Bore 3.5 63 Chlorination No Construction of a new treatment plant for Seddon commenced in early 2018 and will be completed by the end of the year. Plans are progressing with the design of Reticulation length upgrades to the Havelock, Renwick and Wairau Valley water treatment plants, as Irrigation Source (kms) Area (hectares) well as the design of a new plant for the Riverlands supply. Properties in Rural Awatere are likely to be fitted with small treatment devices at the point of entry of Riverlands Hardings Road bores 3 52 each household. (2) In August 2016 the public drinking water supply in Havelock North was contaminated by sheep faeces entering the underground aquifer. Gastroenteritis Why We Provide these Services affected over 5,000 people. There were three deaths directly related to the Water quality — Possibly the greatest threat to public health is the contamination as well as many severe and enduring illnesses. The public inquiry microbiological infection of the drinking water supply. Since the introduction of the into the contamination reported in December 2017. The recommendations from Health (Amendment) Act 2007 water suppliers have been required to plan to meet the Inquiry that may impact the operation of this activity include the establishment the Drinking Water Standards for New Zealand (DWSNZ). Compliance is phased of an independent drinking water regulator with consolidated powers, and the over a number of years depending on the population each scheme serves. The abolition of ‘secure bore supply’ status from the DWSNZ. Increased monitoring target dates in the Act have not been met in Marlborough, but the design, and training for operatives and the chlorination of all supplies is also recommended. The government response to the recommendations is not yet 5 certain. Havelock and Renwick compliance was required by 2014. Wairau Valley compliance was required by 2015 but has been delayed. Compliance with DWSNZ continues to require significant Flow and pressure — Customers value an unlimited supply of water at a capital expenditure which creates affordability issues for smaller communities. desirable pressure for showers, domestic irrigation and multiple household uses. 2018-2028 Long Term Plan Page 93 gniknirD retaW ecruoSnoitaluciteR)smk( htgneL ecivreS snoitcennoc tnerruC tnemtaerTtnerruCecnailpmoCZNSWD htiw