{
  "dataset": "Home Water HQ \u2014 home water filtration products",
  "version": "0.1 (pre-launch staging build)",
  "price_checked": "2026-11-03",
  "currency": "USD",
  "note": "Prices verified from manufacturer or major retailer pages on the price_checked date. DTC prices in this category swing 15-40% with promotions. cert_check states in plain language what each product's certification actually covers \u2014 many 'NSF certified' claims in this category are component-level, materials-only, or TDS-only.",
  "changelog": [
    {
      "date": "2026-11-03",
      "change": "Initial dataset: 30 products across 5 categories, prices verified 2026-11-03. SpringWell CF1 and Whirlpool WHELJ1 prices not captured first-hand (dynamic/unavailable) and are flagged in their records."
    },
    {
      "date": "2026-11-03",
      "change": "Reorganized categories after reader feedback: whole-house split into Tank Systems vs Cartridge Systems & Housings; the GE GXWH40L is now labeled plainly as a housing only, not a complete system."
    }
  ],
  "products": [
    {
      "id": "aquasana-rhino-wh1000",
      "name": "Aquasana Rhino WH-1000",
      "brand": "Aquasana",
      "category": "Whole-house tank systems",
      "price_usd": 1998.0,
      "list_price_usd": null,
      "price_note": "Base system at aquasana.com; frequently discounted in promotions.",
      "key_spec": "7.0 GPM rated flow; 1,000,000 gal media life",
      "type": "Dual-tank carbon + KDF whole-house filter",
      "cert_check": "Strong: independently tested to NSF/ANSI 42 (97% chlorine reduction over 1M gal). Tank certified to NSF/ANSI 61 (materials). No lead or PFAS claim on this model.",
      "yearly_filter_cost": "~$75 (pre/post filters)",
      "buy_url": "https://www.amazon.com/s?k=Aquasana+Rhino+whole+house+water+filter&tag=homegenerat0c-20",
      "buy_url_type": "affiliate link (Amazon Associates)",
      "official_url": "https://www.aquasana.com",
      "notes": "Sized for homes up to ~2.5 bathrooms. Aquasana program pays from 10% via Rakuten (direct, post-launch)."
    },
    {
      "id": "springwell-cf1",
      "name": "SpringWell CF1",
      "brand": "SpringWell",
      "category": "Whole-house tank systems",
      "price_usd": null,
      "list_price_usd": null,
      "price_note": "Price not captured first-hand (dynamic variant pricing). Recent readings of SpringWell's own page: ~$1,092-$1,170 (Nov 2026). Verify before publishing.",
      "key_spec": "9 GPM (1-3 bathrooms); 1,000,000 gal media life",
      "type": "Catalytic carbon + KDF tank system",
      "cert_check": "Component-level only: media components are NSF 42/53 certified; the assembled system has NO finished-system performance certification. Reduction figures are SpringWell's own lab data.",
      "yearly_filter_cost": "~$40 (sediment post-filter)",
      "buy_url": "https://www.springwellwater.com",
      "buy_url_type": "official site (direct affiliate program exists; not yet joined)",
      "official_url": "https://www.springwellwater.com",
      "notes": "Filtration only, does not soften. Flagship whole-house tanks are NOT reliably sold on Amazon, so no Amazon backstop for this product."
    },
    {
      "id": "kind-e1000",
      "name": "Kind Water Systems E-1000",
      "brand": "Kind Water Systems",
      "category": "Whole-house tank systems",
      "price_usd": 976.46,
      "list_price_usd": null,
      "price_note": "List price at kindwater.com; sale pricing ~$776 reported in 2026.",
      "key_spec": "15 GPM; ~80,000 gal per cartridge set",
      "type": "2-stage cartridge whole-house filter (sediment + catalytic carbon)",
      "cert_check": "Materials-only: whole-system certs are NSF/ANSI 61 + 372 and CSA B483.1 (safety of materials). No finished-system performance listing (no certified 42/53 claims).",
      "yearly_filter_cost": "~$120-300 (annual cartridge set)",
      "buy_url": "https://www.amazon.com/s?k=Kind+Water+Systems+E-1000&tag=homegenerat0c-20",
      "buy_url_type": "affiliate link (Amazon Associates)",
      "official_url": "https://kindwater.com",
      "notes": "DIY install 2-4 hours. Kind's affiliate program runs on Awin (Blake's pending Awin account)."
    },
    {
      "id": "ispring-wgb32b-pb",
      "name": "iSpring WGB32B-PB",
      "brand": "iSpring",
      "category": "Whole-house cartridge systems & housings",
      "price_usd": 465.22,
      "list_price_usd": null,
      "price_note": "Price at Home Depot for the lead-reducing PB variant.",
      "key_spec": "Up to 15 GPM; 100,000 gal capacity (lead cartridge 150,000 gal)",
      "type": "3-stage Big Blue cartridge system",
      "cert_check": "No finished-system NSF/ANSI performance certification verified. Contaminant figures are manufacturer claims.",
      "yearly_filter_cost": "~$110 (cartridge set)",
      "buy_url": "https://www.amazon.com/s?k=iSpring+WGB32B+whole+house+water+filter&tag=homegenerat0c-20",
      "buy_url_type": "affiliate link (Amazon Associates)",
      "official_url": "https://www.ispringfilter.com",
      "notes": "The budget whole-house option. iSpring has no cash affiliate program (referral credit only), so Amazon is the monetization route."
    },
    {
      "id": "express-water-wh300",
      "name": "Express Water 3-Stage Whole House (Heavy Metals)",
      "brand": "Express Water",
      "category": "Whole-house cartridge systems & housings",
      "price_usd": 449.99,
      "list_price_usd": null,
      "price_note": "WH-300RS-CKS at expresswater.com, in stock.",
      "key_spec": "100,000 gal per filter set; flow rate not stated by manufacturer",
      "type": "3-stage cartridge system with KDF heavy-metals stage",
      "cert_check": "No finished-system NSF/ANSI certification verified for the whole-house line.",
      "yearly_filter_cost": null,
      "buy_url": "https://www.amazon.com/s?k=Express+Water+whole+house+water+filter+3+stage&tag=homegenerat0c-20",
      "buy_url_type": "affiliate link (Amazon Associates)",
      "official_url": "https://expresswater.com",
      "notes": "4.8/5 from 668 reviews on the manufacturer page. Blue housings are the known weak point in owner reviews."
    },
    {
      "id": "whirlpool-whelj1",
      "name": "Whirlpool WHELJ1",
      "brand": "Whirlpool",
      "category": "Whole-house tank systems",
      "price_usd": null,
      "list_price_usd": null,
      "price_note": "US in-stock price not verified (listings found were out of stock at $449.99; typical US pricing ~$700-$900). Re-check at Lowe's before featuring.",
      "key_spec": "6 GPM service flow; ~570,000 gal media life; self-cleaning every 14 days",
      "type": "Self-cleaning central water filtration system",
      "cert_check": "Certified to NSF/ANSI 42 (chlorine, taste & odor) and 372 (lead-free materials) per the NSF database.",
      "yearly_filter_cost": "$0 (no filters to replace for the life of the unit)",
      "buy_url": "https://www.amazon.com/s?k=Whirlpool+WHELJ1+central+water+filtration&tag=homegenerat0c-20",
      "buy_url_type": "affiliate link (Amazon Associates)",
      "official_url": "https://www.whirlpool.com",
      "notes": "The no-maintenance option. Requires electricity and a drain connection for the flush cycle."
    },
    {
      "id": "ge-gxwh40l",
      "name": "GE GXWH40L",
      "brand": "GE Appliances",
      "category": "Whole-house cartridge systems & housings",
      "price_usd": 69.85,
      "list_price_usd": null,
      "price_note": "At Home Depot. Housing only; cartridge sold separately (~$30-$65).",
      "key_spec": "HOUSING ONLY \u2014 not a complete filter system. Cartridge sold separately (~$30-$65)",
      "type": "Single-cartridge filter housing (sediment or carbon cartridges)",
      "cert_check": "Housing carries no contaminant certification; the FXWTC cartridge is certified to NSF/ANSI 42 (chlorine taste & odor) at cartridge level.",
      "yearly_filter_cost": "~$120-260 (cartridge every ~3 months)",
      "buy_url": "https://www.amazon.com/s?k=GE+GXWH40L+whole+house+filter&tag=homegenerat0c-20",
      "buy_url_type": "affiliate link (Amazon Associates)",
      "official_url": "https://www.geappliances.com",
      "notes": "A starting point you build on, not a treatment system: a heavy-duty housing that takes GE cartridges. Included in the dataset so the class is represented honestly."
    },
    {
      "id": "waterdrop-g3p800",
      "name": "Waterdrop G3P800",
      "brand": "Waterdrop",
      "category": "Under-sink reverse osmosis",
      "price_usd": 849.0,
      "list_price_usd": 999.0,
      "price_note": "Sale price at waterdropfilter.com; this model's price moves a lot with promotions.",
      "key_spec": "800 GPD tankless; 3:1 pure-to-drain; built-in UV; smart faucet shows TDS",
      "type": "10-stage tankless RO, 3 cartridges",
      "cert_check": "Strong: certified by IAPMO R&T to NSF/ANSI 42, 53 and 58 (incl. fluoride and PFOA/PFOS per its performance data sheet) plus 372.",
      "yearly_filter_cost": "~$160 (manufacturer figure)",
      "buy_url": "https://www.amazon.com/s?k=Waterdrop+G3P800+tankless+reverse+osmosis&tag=homegenerat0c-20",
      "buy_url_type": "affiliate link (Amazon Associates)",
      "official_url": "https://www.waterdropfilter.com",
      "notes": "The premium tankless benchmark. Waterdrop's program pays 8-10% and is on Awin (pending account)."
    },
    {
      "id": "waterdrop-g3p600",
      "name": "Waterdrop G3P600",
      "brand": "Waterdrop",
      "category": "Under-sink reverse osmosis",
      "price_usd": 439.0,
      "list_price_usd": 539.0,
      "price_note": "Sale price at waterdropfilter.com.",
      "key_spec": "600 GPD tankless; 2:1 pure-to-drain; smart display faucet",
      "type": "8-stage tankless RO",
      "cert_check": "Certified to NSF/ANSI 42, 58 and 372 (IAPMO R&T). Note: lacks the G3P800's NSF/ANSI 53 certification.",
      "yearly_filter_cost": "~$145 (manufacturer figure)",
      "buy_url": "https://www.amazon.com/s?k=Waterdrop+G3P600+reverse+osmosis&tag=homegenerat0c-20",
      "buy_url_type": "affiliate link (Amazon Associates)",
      "official_url": "https://www.waterdropfilter.com",
      "notes": "Same chassis as the G3P800 at roughly half the street price."
    },
    {
      "id": "frizzlife-pd600",
      "name": "Frizzlife PD600-TAM3",
      "brand": "Frizzlife",
      "category": "Under-sink reverse osmosis",
      "price_usd": 399.99,
      "list_price_usd": 469.99,
      "price_note": "Sale price at frizzlife.com.",
      "key_spec": "600 GPD tankless; 2:1 pure-to-drain; real-time TDS display",
      "type": "Tankless RO with alkaline remineralization cartridge",
      "cert_check": "Manufacturer-stated: Frizzlife says the system was tested to NSF/ANSI 42/53/58, but an independent certification listing for this exact model could not be confirmed. Treat as manufacturer claim, not verified certification.",
      "yearly_filter_cost": "~$60-80 (per review sites)",
      "buy_url": "https://www.amazon.com/s?k=Frizzlife+PD600+tankless+reverse+osmosis&tag=homegenerat0c-20",
      "buy_url_type": "affiliate link (Amazon Associates)",
      "official_url": "https://www.frizzlife.com",
      "notes": "Frizzlife's direct program pays 10-15% (in-house, post-launch)."
    },
    {
      "id": "apec-ro90",
      "name": "APEC RO-90",
      "brand": "APEC Water Systems",
      "category": "Under-sink reverse osmosis",
      "price_usd": 264.99,
      "list_price_usd": null,
      "price_note": "At apecwater.com; some retailers list it lower.",
      "key_spec": "90 GPD; 4-gallon tank; no electricity",
      "type": "5-stage tank-based RO",
      "cert_check": "Strong: WQA certified to NSF/ANSI 58 with one of the broadest certified claim lists in under-sink RO (arsenic V, barium, cadmium, copper, fluoride, chromium-6, lead, radium, selenium, TDS) plus 372. No certified PFAS claim.",
      "yearly_filter_cost": "~$60-75",
      "buy_url": "https://www.amazon.com/s?k=APEC+RO-90+reverse+osmosis&tag=homegenerat0c-20",
      "buy_url_type": "affiliate link (Amazon Associates)",
      "official_url": "https://www.apecwater.com",
      "notes": "Assembled in the USA. APEC's direct rates are low (~3%), so Amazon is competitive here."
    },
    {
      "id": "apec-roes50",
      "name": "APEC ROES-50",
      "brand": "APEC Water Systems",
      "category": "Under-sink reverse osmosis",
      "price_usd": 230.99,
      "list_price_usd": null,
      "price_note": "At apecwater.com; Amazon has run it at $179.99.",
      "key_spec": "50 GPD; 4-gallon tank; no electricity",
      "type": "5-stage tank-based RO (Essence line)",
      "cert_check": "WQA Gold Seal to NSF/ANSI 58 \u2014 but the certified scope on the listing is TDS reduction. Broader marketing claims are not all covered by the listing.",
      "yearly_filter_cost": "~$55",
      "buy_url": "https://www.amazon.com/s?k=APEC+ROES-50+reverse+osmosis&tag=homegenerat0c-20",
      "buy_url_type": "affiliate link (Amazon Associates)",
      "official_url": "https://www.apecwater.com",
      "notes": "One of the two best-selling budget RO systems in the US."
    },
    {
      "id": "ispring-rcc7ak",
      "name": "iSpring RCC7AK",
      "brand": "iSpring",
      "category": "Under-sink reverse osmosis",
      "price_usd": 239.99,
      "list_price_usd": 241.99,
      "price_note": "At ispringfilter.com; Walmart sells it at $234.99.",
      "key_spec": "75 GPD; 3.2-gallon tank; no electricity",
      "type": "6-stage RO with alkaline remineralization",
      "cert_check": "Certified to NSF/ANSI 58 \u2014 manufacturer states the certified scope is TDS reduction.",
      "yearly_filter_cost": "~$62 (standard-size filters)",
      "buy_url": "https://www.amazon.com/s?k=iSpring+RCC7AK+reverse+osmosis&tag=homegenerat0c-20",
      "buy_url_type": "affiliate link (Amazon Associates)",
      "official_url": "https://www.ispringfilter.com",
      "notes": "Best-selling budget RO line in the US. Amazon-only monetization (no iSpring cash program)."
    },
    {
      "id": "express-water-ro5dx",
      "name": "Express Water RO5DX",
      "brand": "Express Water",
      "category": "Under-sink reverse osmosis",
      "price_usd": 167.99,
      "list_price_usd": null,
      "price_note": "At Home Depot; price varies by configuration/promo.",
      "key_spec": "50 GPD rated; 4-gallon tank; no electricity",
      "type": "5-stage tank-based RO",
      "cert_check": "NSF/ANSI 58 certified for TDS reduction only (per NSF's own listing; the listing's certified production rate is 12.22 GPD vs the 50 GPD marketing rating).",
      "yearly_filter_cost": "~$37-66",
      "buy_url": "https://www.amazon.com/s?k=Express+Water+RO5DX+reverse+osmosis&tag=homegenerat0c-20",
      "buy_url_type": "affiliate link (Amazon Associates)",
      "official_url": "https://expresswater.com",
      "notes": "Among the cheapest genuinely NSF-listed RO systems. One aggregator flagged possible discontinuation in late 2026 \u2014 in stock at Home Depot and Express Water as of this check."
    },
    {
      "id": "aquatru-classic",
      "name": "AquaTru Classic",
      "brand": "AquaTru",
      "category": "Countertop filters",
      "price_usd": 475.0,
      "list_price_usd": null,
      "price_note": "Base model at aquatru.com; alkaline and smart variants $495-$545.",
      "key_spec": "4-stage countertop RO; no plumbing; ~0.75 gal batch tank",
      "type": "Countertop reverse osmosis",
      "cert_check": "Strong: independently certified by IAPMO to NSF/ANSI 42, 53, 58 and P473 (PFAS) for 84 contaminants \u2014 the strongest certification story in countertop RO.",
      "yearly_filter_cost": "~$100 (1-yr combo pack $99.85); ~$130/yr averaged incl. membrane year",
      "buy_url": "https://www.amazon.com/s?k=AquaTru+Classic+countertop+reverse+osmosis&tag=homegenerat0c-20",
      "buy_url_type": "affiliate link (Amazon Associates)",
      "official_url": "https://aquatru.com",
      "notes": "AquaTru's direct program advertises up to 22% via Everflow (tiered; confirm at signup)."
    },
    {
      "id": "aquatru-carafe",
      "name": "AquaTru Carafe",
      "brand": "AquaTru",
      "category": "Countertop filters",
      "price_usd": 375.0,
      "list_price_usd": null,
      "price_note": "At aquatru.com; alkaline version $395.",
      "key_spec": "4-stage countertop RO with glass carafe; 1-2 person households",
      "type": "Countertop reverse osmosis",
      "cert_check": "Same IAPMO/NSF-family certification platform as the Classic (84 contaminants claim).",
      "yearly_filter_cost": "~$80-100 (1-yr combo pack)",
      "buy_url": "https://www.amazon.com/s?k=AquaTru+Carafe&tag=homegenerat0c-20",
      "buy_url_type": "affiliate link (Amazon Associates)",
      "official_url": "https://aquatru.com",
      "notes": "The glass, no-plastic-tank angle at a lower entry price than the Classic."
    },
    {
      "id": "waterdrop-k19",
      "name": "Waterdrop K19 (WD-K19-H/S)",
      "brand": "Waterdrop",
      "category": "Countertop filters",
      "price_usd": 279.0,
      "list_price_usd": 379.0,
      "price_note": "K19-H (instant hot) sale price at waterdropfilter.com; K19-S is $309.",
      "key_spec": "6-stage countertop RO dispenser; 75 GPD; 3:1 pure-to-drain; instant hot on K19-H",
      "type": "Countertop RO dispenser, single composite cartridge (12 months / 1,100 gal)",
      "cert_check": "NSF/ANSI 58 certified per Waterdrop; independent listing check shows the IAPMO scope covers TDS reduction \u2014 narrower than the marketing implies. Also NSF/ANSI 372.",
      "yearly_filter_cost": "~$69-75 (single $68.99 cartridge, once a year \u2014 the cheapest countertop RO consumable)",
      "buy_url": "https://www.amazon.com/s?k=Waterdrop+K19+countertop+reverse+osmosis&tag=homegenerat0c-20",
      "buy_url_type": "affiliate link (Amazon Associates)",
      "official_url": "https://www.waterdropfilter.com",
      "notes": "Best total-cost-of-ownership story in countertop RO."
    },
    {
      "id": "waterdrop-c2sl",
      "name": "Waterdrop C2SL",
      "brand": "Waterdrop",
      "category": "Countertop filters",
      "price_usd": 159.99,
      "list_price_usd": 199.99,
      "price_note": "Sale price at waterdropfilter.com.",
      "key_spec": "7-stage mineral RO; glass pitcher; 75 GPD; 528 gal per filter",
      "type": "Countertop mineral reverse osmosis",
      "cert_check": "None listed for this model \u2014 Waterdrop's own comparison table shows no certification for the C2SL; contaminant claims are SGS lab-tested, not NSF-certified.",
      "yearly_filter_cost": "~$56 (the lowest in countertop RO)",
      "buy_url": "https://www.amazon.com/s?k=Waterdrop+C2SL+countertop+reverse+osmosis&tag=homegenerat0c-20",
      "buy_url_type": "affiliate link (Amazon Associates)",
      "official_url": "https://www.waterdropfilter.com",
      "notes": "Sells on price, glass pitcher and mineral/alkaline angle \u2014 not on certification."
    },
    {
      "id": "frizzlife-wb99c",
      "name": "Frizzlife WB99-C",
      "brand": "Frizzlife",
      "category": "Countertop filters",
      "price_usd": 389.99,
      "list_price_usd": 449.99,
      "price_note": "Sale price at frizzlife.com.",
      "key_spec": "Countertop RO; 100 GPD; 3.5:1 pure-to-drain; alkaline post-filter",
      "type": "Countertop reverse osmosis, 2 cartridges",
      "cert_check": "NSF/ANSI 58 certified RO membrane (membrane element certification \u2014 wording matters; not a whole-system listing).",
      "yearly_filter_cost": "~$130-146 (the highest in countertop RO \u2014 the alkaline post-filter is replaced quarterly)",
      "buy_url": "https://www.amazon.com/s?k=Frizzlife+WB99+countertop+reverse+osmosis&tag=homegenerat0c-20",
      "buy_url_type": "affiliate link (Amazon Associates)",
      "official_url": "https://www.frizzlife.com",
      "notes": "Filter prices verified from Amazon Frizzlife listings (frizzlife.com filter pages showed no prices in this pass \u2014 re-verify at publish)."
    },
    {
      "id": "bluevua-ropot",
      "name": "Bluevua RO100ROPOT",
      "brand": "Bluevua",
      "category": "Countertop filters",
      "price_usd": 389.0,
      "list_price_usd": 434.0,
      "price_note": "Sale price at bluevua.com.",
      "key_spec": "5-stage countertop RO; glass carafe; remineralization; TDS + filter-life monitors",
      "type": "Countertop reverse osmosis, 4 cartridges",
      "cert_check": "Bluevua displays an NSF/WQA badge, but the exact certified scope for this model was not stated on its page \u2014 verify the listing before repeating a specific certification claim.",
      "yearly_filter_cost": "~$90 (1-yr set $89.97); ~$110-120 averaged incl. membrane years",
      "buy_url": "https://www.amazon.com/s?k=Bluevua+RO100ROPOT+countertop+reverse+osmosis&tag=homegenerat0c-20",
      "buy_url_type": "affiliate link (Amazon Associates)",
      "official_url": "https://bluevua.com",
      "notes": "Deepest review base of the Amazon-native countertop RO brands."
    },
    {
      "id": "big-berkey-phoenix",
      "name": "Big Berkey with Phoenix Elements",
      "brand": "Berkey",
      "category": "Countertop filters",
      "price_usd": 267.0,
      "list_price_usd": null,
      "price_note": "With 2 Phoenix elements at berkeyhome.com. Not available in California or Iowa.",
      "key_spec": "2.25 gal gravity system; up to 5,500 gal per element set (~$0.02/gal)",
      "type": "Gravity-fed stainless steel, no power or plumbing",
      "cert_check": "Phoenix elements certified to NSF/ANSI 42 + 372 only. Legacy Black Berkey contaminant claims are NOT NSF certifications and should not be repeated as such.",
      "yearly_filter_cost": "~$13-50 (multi-year element life \u2014 the anti-subscription product)",
      "buy_url": "https://www.amazon.com/s?k=Big+Berkey+gravity+water+filter&tag=homegenerat0c-20",
      "buy_url_type": "affiliate link (Amazon Associates)",
      "official_url": "https://berkeyhome.com",
      "notes": "Prepper/off-grid audience favorite. Included for comparison completeness; almost no recurring filter revenue."
    },
    {
      "id": "pur-pfm400h",
      "name": "PUR PLUS Faucet System (PFM400H)",
      "brand": "PUR",
      "category": "Pitchers & faucet filters",
      "price_usd": 39.99,
      "list_price_usd": null,
      "price_note": "Retail-distributed; ~$33-40 at major retailers (Target $39.99).",
      "key_spec": "Faucet-mount; 100 gal or 3 months per filter; filter-change light",
      "type": "Faucet-mount filter",
      "cert_check": "The most-certified faucet mount in this dataset: NSF/ANSI 42, 53 and 401 \u2014 certified to reduce 70 contaminants including lead and mercury.",
      "yearly_filter_cost": "~$55-79 (cheaper in multipacks)",
      "buy_url": "https://www.amazon.com/s?k=PUR+PLUS+faucet+filtration+PFM400H&tag=homegenerat0c-20",
      "buy_url_type": "affiliate link (Amazon Associates)",
      "official_url": "https://www.pur.com",
      "notes": "The default faucet-mount recommendation: broadest certification at the lowest system price."
    },
    {
      "id": "brita-denali-elite",
      "name": "Brita Denali Pitcher with Elite Filter",
      "brand": "Brita",
      "category": "Pitchers & faucet filters",
      "price_usd": 35.99,
      "list_price_usd": null,
      "price_note": "At brita.com.",
      "key_spec": "6-cup pitcher; Elite filter lasts 120 gal / ~6 months",
      "type": "Pour-through pitcher",
      "cert_check": "NSF/ANSI 42, 53 and 401 platform (incl. 99% lead reduction). No PFAS certification \u2014 do not claim PFAS removal for Brita.",
      "yearly_filter_cost": "~$40 (the cheapest pitcher consumable \u2014 two filters a year)",
      "buy_url": "https://www.amazon.com/s?k=Brita+Denali+pitcher+Elite+filter&tag=homegenerat0c-20",
      "buy_url_type": "affiliate link (Amazon Associates)",
      "official_url": "https://www.brita.com",
      "notes": "The total-cost winner among pitchers; a traffic product more than a revenue product."
    },
    {
      "id": "brita-ultramax-elite",
      "name": "Brita Ultramax Dispenser with Elite Filter",
      "brand": "Brita",
      "category": "Pitchers & faucet filters",
      "price_usd": 49.99,
      "list_price_usd": null,
      "price_note": "At brita.com.",
      "key_spec": "27-cup dispenser; same Elite filter (120 gal / ~6 months)",
      "type": "Countertop/fridge dispenser",
      "cert_check": "Same NSF/ANSI 42, 53 and 401 platform as the Denali Elite. No PFAS certification.",
      "yearly_filter_cost": "~$40",
      "buy_url": "https://www.amazon.com/s?k=Brita+Ultramax+dispenser+Elite&tag=homegenerat0c-20",
      "buy_url_type": "affiliate link (Amazon Associates)",
      "official_url": "https://www.brita.com",
      "notes": "The family/office format of the Denali."
    },
    {
      "id": "pur-plus-pitcher",
      "name": "PUR PLUS 11-Cup Pitcher",
      "brand": "PUR",
      "category": "Pitchers & faucet filters",
      "price_usd": 39.99,
      "list_price_usd": null,
      "price_note": "At Target.",
      "key_spec": "11-cup pitcher; filter lasts 40 gal / ~2 months",
      "type": "Pour-through pitcher",
      "cert_check": "NSF/ANSI 42 + 53 platform with certified lead reduction.",
      "yearly_filter_cost": "~$70-108 (six filters a year on schedule)",
      "buy_url": "https://www.amazon.com/s?k=PUR+PLUS+11+cup+pitcher&tag=homegenerat0c-20",
      "buy_url_type": "affiliate link (Amazon Associates)",
      "official_url": "https://www.pur.com",
      "notes": "Brita's direct rival, with 3x the filter-change frequency."
    },
    {
      "id": "zerowater-12cup",
      "name": "Culligan ZeroWater 12-Cup Pitcher",
      "brand": "Culligan ZeroWater",
      "category": "Pitchers & faucet filters",
      "price_usd": 36.99,
      "list_price_usd": null,
      "price_note": "At shop.culligan.com; promos to ~$31 seen.",
      "key_spec": "5-stage ion-exchange pitcher; includes TDS meter; filters to 000 TDS",
      "type": "Pour-through pitcher",
      "cert_check": "IAPMO-certified for lead, chromium, mercury, PFOA/PFOS and chlorine (NSF/ANSI 42/53-family claims).",
      "yearly_filter_cost": "~$185-240+ (filter life is TDS-dependent: 15-40 gal per filter \u2014 the most expensive water per gallon in this dataset)",
      "buy_url": "https://www.amazon.com/s?k=ZeroWater+12+cup+pitcher&tag=homegenerat0c-20",
      "buy_url_type": "affiliate link (Amazon Associates)",
      "official_url": "https://zerowater.com",
      "notes": "Cheapest pitcher to buy, priciest to own \u2014 the honest total-cost story. ZeroWater's direct program is on Impact (rates tiered 3-20%)."
    },
    {
      "id": "clearly-filtered-pitcher",
      "name": "Clearly Filtered Pitcher",
      "brand": "Clearly Filtered",
      "category": "Pitchers & faucet filters",
      "price_usd": 110.0,
      "list_price_usd": null,
      "price_note": "At clearlyfiltered.com; $99 on filter subscription.",
      "key_spec": "10-cup pitcher; 100 gal per filter; medical-grade Tritan",
      "type": "Premium pour-through pitcher",
      "cert_check": "Cert-vs-claim gap: the NSF listing covers NSF/ANSI 42 + 372 only. The '386+ contaminants' headline rests on independent lab testing, not NSF certification \u2014 frame it as lab-tested, never certified.",
      "yearly_filter_cost": "~$156-260 ($65 per filter)",
      "buy_url": "https://www.amazon.com/s?k=Clearly+Filtered+water+pitcher&tag=homegenerat0c-20",
      "buy_url_type": "affiliate link (Amazon Associates)",
      "official_url": "https://clearlyfiltered.com",
      "notes": "Premium pitcher economics: $110 ticket + $65 consumable. Direct program via CJ (6% listed; up to 15% per FMTC \u2014 confirm inside CJ)."
    },
    {
      "id": "everydrop-filter-4",
      "name": "everydrop Refrigerator Filter 4 (EDR4RXD1)",
      "brand": "everydrop (Whirlpool)",
      "category": "Fridge & shower filters",
      "price_usd": 57.0,
      "list_price_usd": 59.99,
      "price_note": "Sale price at whirlpool.com. Fits Whirlpool, Maytag, KitchenAid, Amana, JennAir.",
      "key_spec": "Replace every 6 months; rated 300 gal",
      "type": "Refrigerator ice & water filter (OEM)",
      "cert_check": "NSF/ANSI 42, 53 and 401 \u2014 reduces 32 contaminants incl. lead, mercury, asbestos, cysts, benzene, microplastics.",
      "yearly_filter_cost": "~$114-120 (two OEM filters a year)",
      "buy_url": "https://www.amazon.com/s?k=everydrop+Filter+4+EDR4RXD1&tag=homegenerat0c-20",
      "buy_url_type": "affiliate link (Amazon Associates)",
      "official_url": "https://www.whirlpool.com",
      "notes": "Fridge filters are a model-number search market \u2014 high intent, bought on a 6-month cycle."
    },
    {
      "id": "waterdrop-fridge-filter-4",
      "name": "Waterdrop Filter 4 Replacement (EDR4RXD1 fit, 4-pack)",
      "brand": "Waterdrop",
      "category": "Fridge & shower filters",
      "price_usd": 35.69,
      "list_price_usd": 47.99,
      "price_note": "4-pack at Target ($8.92 per filter).",
      "key_spec": "300 gal / 6 months per filter; fits everydrop Filter 4 fridges",
      "type": "Compatible refrigerator filter",
      "cert_check": "NSF/ANSI 42 + 372 certified \u2014 narrower than the OEM filter's 42/53/401.",
      "yearly_filter_cost": "~$18 (the OEM-vs-compatible gap is ~6x: ~$120/yr vs ~$18/yr)",
      "buy_url": "https://www.amazon.com/s?k=Waterdrop+EDR4RXD1+refrigerator+filter&tag=homegenerat0c-20",
      "buy_url_type": "affiliate link (Amazon Associates)",
      "official_url": "https://www.waterdropfilter.com",
      "notes": "The value-disruptor row that makes the fridge-filter comparison honest."
    },
    {
      "id": "aquasana-shower-aq4100",
      "name": "Aquasana Shower Filter AQ-4100",
      "brand": "Aquasana",
      "category": "Fridge & shower filters",
      "price_usd": 79.99,
      "list_price_usd": 139.99,
      "price_note": "Street price $79.99 (Walmart/TapWaterData brand-page check); aquasana.com system price to re-verify at publish. Replacement cartridge $62.99 verified at aquasana.com.",
      "key_spec": "10,000 gal or 6 months; 2-stage coconut carbon + KDF-55",
      "type": "Shower filter with shower head",
      "cert_check": "Independently tested to NSF/ANSI 177 to reduce >90% of chlorine.",
      "yearly_filter_cost": "$125.98 (two $62.99 cartridges a year)",
      "buy_url": "https://www.amazon.com/s?k=Aquasana+AQ-4100+shower+filter&tag=homegenerat0c-20",
      "buy_url_type": "affiliate link (Amazon Associates)",
      "official_url": "https://www.aquasana.com",
      "notes": "Beauty/skin/hair audience \u2014 a completely different reader from drinking-water content. $126/yr consumable on an $80 system."
    }
  ]
}