{"id":271283,"date":"2026-09-10T16:09:58","date_gmt":"2026-09-10T14:09:58","guid":{"rendered":"https:\/\/mooiwater.nl\/"},"modified":"2026-09-10T16:14:09","modified_gmt":"2026-09-10T14:14:09","slug":"can-you-adjust-the-residual-hardness-of-a-water-softener","status":"publish","type":"post","link":"https:\/\/mooiwater.nl\/en\/blog\/can-you-adjust-the-residual-hardness-of-a-water-softener\/","title":{"rendered":"Can you adjust the residual hardness of a water softener?"},"content":{"rendered":"\n[et_pb_section fb_built=&#8221;1&#8243; _builder_version=&#8221;4.27.0&#8243; _module_preset=&#8221;default&#8221; background_color=&#8221;#f6f6f6&#8243; custom_margin=&#8221;0px||0px||true|false&#8221; custom_margin_tablet=&#8221;0px||0px||true|false&#8221; custom_margin_phone=&#8221;0px||||false|false&#8221; custom_margin_last_edited=&#8221;on|phone&#8221; custom_padding=&#8221;0px||0px|||&#8221; global_module=&#8221;5923&#8243; saved_tabs=&#8221;all&#8221; locked=&#8221;on&#8221; collapsed=&#8221;on&#8221; 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background_enable_color_phone=&#8221;off&#8221; background_image_phone=&#8221;https:\/\/mooiwater.nl\/wp-content\/uploads\/2020\/10\/header-image.svg&#8221; background_enable_image_phone=&#8221;on&#8221; custom_css_free_form=&#8221;.bottom{||  background-color: #003558;||}||||.custom-menu-wrapper .menu a{||      color: #fff !important;||}||||.custom-menu-wrapper .menu .sub-menu li a{||  color: #003558 !important;||}&#8221; saved_tabs=&#8221;all&#8221; locked=&#8221;off&#8221; global_colors_info=&#8221;{}&#8221; title_text_phone=&#8221;Group 15 (1)&#8221;][et_pb_row custom_padding_last_edited=&#8221;on|phone&#8221; _builder_version=&#8221;4.16&#8243; custom_margin=&#8221;||0px||false|false&#8221; custom_padding=&#8221;30px||25px||false|false&#8221; custom_padding_tablet=&#8221;||0px||false|false&#8221; custom_padding_phone=&#8221;0px||0px||false|false&#8221; hover_transition_duration=&#8221;0ms&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_column type=&#8221;4_4&#8243; _builder_version=&#8221;4.16&#8243; global_colors_info=&#8221;{}&#8221;][et_pb_text content_last_edited=&#8221;off|tablet&#8221; admin_label=&#8221;Page Title&#8221; _builder_version=&#8221;4.27.5&#8243; _dynamic_attributes=&#8221;content&#8221; text_font=&#8221;Open Sans||||||||&#8221; text_text_color=&#8221;#ffffff&#8221; text_font_size=&#8221;28px&#8221; text_line_height=&#8221;1.6em&#8221; header_font=&#8221;Open Sans|800|||||||&#8221; header_text_color=&#8221;#ffffff&#8221; header_font_size=&#8221;36px&#8221; custom_margin=&#8221;||10px||false|false&#8221; custom_margin_tablet=&#8221;0px||20px||false|false&#8221; custom_margin_phone=&#8221;40px||0px||false|false&#8221; custom_margin_last_edited=&#8221;on|phone&#8221; custom_padding=&#8221;0px||||false|false&#8221; custom_padding_tablet=&#8221;0px||||false|false&#8221; custom_padding_phone=&#8221;||20px||false|false&#8221; custom_padding_last_edited=&#8221;on|phone&#8221; hover_transition_duration=&#8221;0ms&#8221; text_font_size_tablet=&#8221;&#8221; text_font_size_phone=&#8221;28px&#8221; text_font_size_last_edited=&#8221;on|desktop&#8221; header_font_size_tablet=&#8221;&#8221; header_font_size_phone=&#8221;22px&#8221; header_font_size_last_edited=&#8221;on|phone&#8221; background_last_edited=&#8221;on|phone&#8221; background_enable_image_phone=&#8221;off&#8221; global_colors_info=&#8221;{}&#8221; title_text_phone=&#8221;header image&#8221;]@ET-DC@eyJkeW5hbWljIjp0cnVlLCJjb250ZW50IjoicG9zdF90aXRsZSIsInNldHRpbmdzIjp7ImJlZm9yZSI6IjxoMT4iLCJhZnRlciI6IjwvaDE+In19@[\/et_pb_text][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section fb_built=&#8221;1&#8243; _builder_version=&#8221;4.27.7&#8243; background_color=&#8221;#e3f9fa&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_row column_structure=&#8221;2_3,1_3&#8243; _builder_version=&#8221;4.16&#8243; custom_padding=&#8221;0px||5px||false|false&#8221; border_color_bottom=&#8221;#d1d1d1&#8243; global_colors_info=&#8221;{}&#8221;][et_pb_column type=&#8221;2_3&#8243; _builder_version=&#8221;4.16&#8243; global_colors_info=&#8221;{}&#8221;][et_pb_text _builder_version=&#8221;4.27.8&#8243; _module_preset=&#8221;default&#8221; text_text_color=&#8221;#121212&#8243; link_text_color=&#8221;#00aced&#8221; header_font=&#8221;Open Sans|700|||||||&#8221; header_text_color=&#8221;#0072fe&#8221; header_font_size=&#8221;24px&#8221; header_2_font=&#8221;Open Sans|700|||||||&#8221; header_2_text_color=&#8221;#00aced&#8221; header_2_font_size=&#8221;24px&#8221; custom_margin=&#8221;0px||||false|false&#8221; hover_enabled=&#8221;0&#8243; header_font_size_tablet=&#8221;&#8221; header_font_size_phone=&#8221;18px&#8221; header_font_size_last_edited=&#8221;on|phone&#8221; header_2_font_size_tablet=&#8221;&#8221; header_2_font_size_phone=&#8221;18px&#8221; header_2_font_size_last_edited=&#8221;on|phone&#8221; locked=&#8221;off&#8221; global_colors_info=&#8221;{}&#8221; sticky_enabled=&#8221;0&#8243;]<p><span style=\"font-weight: 400;\">Rond resthardheid doen twee hardnekkige aannames de ronde: dat je altijd een minimale resthardheid zou moeten aanhouden, en dat dit zelfs wettelijk verplicht zou zijn. In deze blog lees je of je een resthardheid kunt instellen bij een <\/span><a href=\"https:\/\/mooiwater.nl\/waterontharder-kopen\/\"><span style=\"font-weight: 400;\">waterontharder<\/span><\/a><span style=\"font-weight: 400;\">, en wat de regelgeving daar werkelijk over zegt.<\/span><\/p>\n<h2><span style=\"font-weight: 400;\">Kun je bij een waterontharder een resthardheid instellen?<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Ja. Alle mooiwater-waterontharders zijn standaard voorzien van een mengventiel. Daarmee stellen we elke gewenste resthardheid nauwkeurig in, bijvoorbeeld 2dH in plaats van 0dH.<\/span><\/p>\n<h2><span style=\"font-weight: 400;\">Is een minimale resthardheid wettelijk verplicht?<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Nee, dat is een misverstand. Soms wordt beweerd dat volgens het Drinkwaterbesluit een minimale resthardheid verplicht zou zijn, maar die verplichting bestaat niet. In oudere voorschriften stond hooguit een aanbeveling, nooit een verplichting.<\/span><\/p>\n<h2><span style=\"font-weight: 400;\">Wat zeggen de Waterwerkbladen over resthardheid?<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">In het oude Waterwerkblad van de Samenwerkende Drinkwaterbedrijven (Werkblad 4.6.3, juni 2004) stond de aanbeveling om een resthardheid van 5,6dH te waarborgen. In het huidige Waterwerkblad (Werkblad 4.6.4, januari 2017) is daar niets meer van terug te vinden: voor woninginstallaties is geen meetprogramma vereist, en worden geen specifieke eisen meer gesteld aan de drinkwaterkwaliteit. De drinkwaterbedrijven zijn dus zelf teruggekomen van hun eigen aanbeveling.<\/span><\/p>\n<h2><span style=\"font-weight: 400;\">Waarom zou je toch een resthardheid instellen?<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">De vraag is niet of het kan, maar waarom je dat zou willen. Bij een lagere resthardheid heb je minder last van kalk en duurt het langer voordat apparatuur verkalkt en je badkamer dof wordt, maar het gebeurt uiteindelijk nog steeds. Wil je desondanks een resthardheid behouden, bijvoorbeeld 2dH, dan regelen we dat zonder problemen. Meer over wat kalkvrij water betekent voor je leidingen lees je op onze pagina over of <\/span><a href=\"https:\/\/mooiwater.nl\/feiten-en-fabels\/zacht-water-tast-koperen-leidingen-aan\/\"><span style=\"font-weight: 400;\">zacht water koperen leidingen aantast<\/span><\/a><span style=\"font-weight: 400;\">.<\/span><\/p>[\/et_pb_text][et_pb_cta button_url=&#8221;\/blogoverzicht\/&#8221; button_text=&#8221;Bekijk meer blogberichten&#8221; _builder_version=&#8221;4.27.4&#8243; header_font=&#8221;Open Sans|700|||||||&#8221; header_text_align=&#8221;left&#8221; header_text_color=&#8221;#000000&#8243; header_font_size=&#8221;22px&#8221; body_text_align=&#8221;left&#8221; body_text_color=&#8221;#000000&#8243; body_font_size=&#8221;16px&#8221; body_line_height=&#8221;1.8em&#8221; body_link_font=&#8221;|700|||||||&#8221; body_link_text_color=&#8221;#ffffff&#8221; background_enable_color=&#8221;off&#8221; custom_button=&#8221;on&#8221; button_text_size=&#8221;14px&#8221; button_text_color=&#8221;#ffffff&#8221; 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button_alignment_last_edited=&#8221;on|desktop&#8221; global_module=&#8221;252623&#8243; saved_tabs=&#8221;all&#8221; locked=&#8221;on&#8221; global_colors_info=&#8221;{}&#8221; custom_css_promo_button_last_edited=&#8221;on|desktop&#8221; custom_css_promo_button_phone=&#8221;width: 100%!important;&#8221; custom_css_promo_button_tablet=&#8221;width: 100%!important;&#8221;][\/et_pb_cta][\/et_pb_column][et_pb_column type=&#8221;1_3&#8243; module_id=&#8221;stickybar&#8221; _builder_version=&#8221;4.16&#8243; global_colors_info=&#8221;{}&#8221;][et_pb_cta title=&#8221;Heb je vragen?&#8221; button_url=&#8221;tel:+31850604470&#8243; button_text=&#8221;085 060 44 70&#8243; disabled_on=&#8221;on|on|on&#8221; _builder_version=&#8221;4.27.4&#8243; header_font=&#8221;Open Sans|700|||||||&#8221; header_text_align=&#8221;left&#8221; header_text_color=&#8221;#121212&#8243; header_font_size=&#8221;20px&#8221; body_text_align=&#8221;left&#8221; body_text_color=&#8221;#121212&#8243; body_link_font=&#8221;|700|||||||&#8221; body_link_text_color=&#8221;#ffffff&#8221; background_color=&#8221;#f6f6f6&#8243; custom_button=&#8221;on&#8221; button_text_size=&#8221;20px&#8221; button_text_color=&#8221;#00aced&#8221; button_border_width=&#8221;0px&#8221; button_border_color=&#8221;#0072fe&#8221; button_border_radius=&#8221;65px&#8221; button_icon=&#8221;\ue090||divi||400&#8243; button_icon_color=&#8221;#00aced&#8221; button_icon_placement=&#8221;left&#8221; button_on_hover=&#8221;off&#8221; button_custom_margin=&#8221;-20px|||15px|false|false&#8221; button_custom_padding=&#8221;0px|15px|0px|15px|true|true&#8221; text_orientation=&#8221;left&#8221; custom_margin=&#8221;||0px|0px|false|false&#8221; custom_padding=&#8221;20px|20px|7px|20px|false|true&#8221; hover_transition_duration=&#8221;0ms&#8221; link_option_url=&#8221;tel:+31850604470&#8243; button_text_size_tablet=&#8221;&#8221; button_text_size_phone=&#8221;20px&#8221; button_text_size_last_edited=&#8221;on|phone&#8221; global_module=&#8221;5593&#8243; saved_tabs=&#8221;all&#8221; locked=&#8221;off&#8221; global_colors_info=&#8221;{}&#8221;]<p>We staan voor je klaar om je vragen te beantwoorden!<\/p>\n[\/et_pb_cta][et_pb_text disabled_on=&#8221;on|on|on&#8221; _builder_version=&#8221;4.27.4&#8243; text_font=&#8221;Open Sans||||||||&#8221; text_text_color=&#8221;#121212&#8243; link_font=&#8221;|600|||||||&#8221; link_text_color=&#8221;#121212&#8243; background_color=&#8221;#f6f6f6&#8243; custom_margin=&#8221;-5px||||false|false&#8221; custom_padding=&#8221;5px|20px|20px|20px|false|true&#8221; hover_transition_duration=&#8221;0ms&#8221; text_font_size_tablet=&#8221;&#8221; text_font_size_phone=&#8221;12px&#8221; text_font_size_last_edited=&#8221;on|phone&#8221; text_orientation_tablet=&#8221;left&#8221; text_orientation_phone=&#8221;&#8221; text_orientation_last_edited=&#8221;on|phone&#8221; disabled=&#8221;on&#8221; global_module=&#8221;5596&#8243; saved_tabs=&#8221;all&#8221; locked=&#8221;off&#8221; global_colors_info=&#8221;{}&#8221;]<p> \n\n\n<span class=\"mb-bhi-display mb-bhi-closed\">\n\t<span class=\"mb-bhi-oc-text\">\ud83d\udd34 Wij zijn momenteel niet telefonisch bereikbaar. Maar u kunt altijd een <a href=\"mailto:info@mooiwater.nl\">mail<\/a> sturen!<\/span><\/span>\n<\/p>\n[\/et_pb_text][et_pb_cta title=&#8221;Heb je al een keuze gemaakt?&#8221; button_url=&#8221;\/ontvang-jouw-prijs\/&#8221; button_text=&#8221;Vrijblijvende offerte&#8221; disabled_on=&#8221;on|off|off&#8221; _builder_version=&#8221;4.27.4&#8243; header_font=&#8221;Open Sans|700|||||||&#8221; header_text_align=&#8221;left&#8221; header_text_color=&#8221;#000000&#8243; header_font_size=&#8221;22px&#8221; body_text_align=&#8221;left&#8221; body_text_color=&#8221;#000000&#8243; body_font_size=&#8221;16px&#8221; body_line_height=&#8221;1.8em&#8221; body_link_font=&#8221;|700|||||||&#8221; body_link_text_color=&#8221;#ffffff&#8221; background_enable_color=&#8221;off&#8221; custom_button=&#8221;on&#8221; button_text_size=&#8221;14px&#8221; button_text_color=&#8221;#ffffff&#8221; button_bg_color=&#8221;#13b938&#8243; button_border_width=&#8221;0px&#8221; button_border_color=&#8221;#0072fe&#8221; button_border_radius=&#8221;65px&#8221; button_icon_color=&#8221;#ffffff&#8221; button_on_hover=&#8221;off&#8221; button_alignment=&#8221;center&#8221; button_custom_padding=&#8221;8px|30px|8px|15px|true|false&#8221; custom_margin=&#8221;||-1px|0px|false|false&#8221; custom_padding=&#8221;0px|0px|30px|0px|false|true&#8221; hover_transition_duration=&#8221;0ms&#8221; link_option_url=&#8221;#&#8221; button_text_size_tablet=&#8221;&#8221; button_text_size_phone=&#8221;12px&#8221; button_text_size_last_edited=&#8221;on|tablet&#8221; custom_css_promo_button=&#8221;width: 100%!important;&#8221; global_module=&#8221;5657&#8243; saved_tabs=&#8221;all&#8221; locked=&#8221;off&#8221; global_colors_info=&#8221;{}&#8221;]<p>Vraag dan gratis een vrijblijvende offerte aan!<\/p>\n[\/et_pb_cta][\/et_pb_column][\/et_pb_row][\/et_pb_section]\n","protected":false},"excerpt":{"rendered":"<p>Rond resthardheid doen twee hardnekkige aannames de ronde: dat je altijd een minimale resthardheid zou moeten aanhouden, en dat dit zelfs wettelijk verplicht zou zijn. In deze blog lees je of je een resthardheid kunt instellen bij een waterontharder, en wat de regelgeving daar werkelijk over zegt. Kun je bij een waterontharder een resthardheid instellen? [&hellip;]<\/p>\n","protected":false},"author":34,"featured_media":253033,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_et_pb_use_builder":"on","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[59],"tags":[],"class_list":["post-271283","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Kun je de resthardheid van een waterontharder instellen? | Mooiwater<\/title>\n<meta name=\"description\" content=\"Moet je een minimale resthardheid aanhouden bij het ontharden van water? 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