Our Methodology
1. How we collect data
Every value on this site lives in a validated dataset. We collect from official Roblox endpoints (game record, votes, group, thumbnails), the official game description, and third-party coverage (guide sites, community wikis, gameplay videos). Raw official API responses are archived with their fetch date before anything enters the dataset.
2. Source hierarchy
- Official — Roblox APIs and pages, the developer's own posts.
- In-game verification — direct play, UI screenshots, video frame checks.
- Community — player-measured values, video evidence.
- Third-party — guide sites and wikis.
Third-party claims are never promoted to fact on their own. When two sources agree we call it cross-verified; when they conflict we record both claims and label the entry.
3. Confidence labels
- Verified — confirmed against an official source.
- Cross-verified — two or more independent sources agree.
- Likely — a single source, plausible, unchecked.
- Unverified — conflicting or weak evidence; shown only with a warning.
When no reliable source documents a value at all, we print nothing. That's why some tables show "Not verified yet" where other sites show a number.
4. How calculators work
Tools and wiki pages share the same calculation library — the drain-time formula on a guide page is literally the same code as the Drain Time Calculator. The base is the official "+1 Water per click"; pump multipliers multiply that base. Because the game doesn't publish stacking rules, multiplier-product estimates are always labeled as estimates, and the calculators prefer values you enter from your own game UI.
5. How efficiency & tier scores are calculated
Efficiency = (multiplier − 1) ÷ Water price — the multiplier a pump grants per Water spent — normalized 0–100 against the best pump. Tier bands follow the roster's progression order, cross-checked against efficiency so a cheap big jump outranks an expensive small one. Both formulas are original to this site and fully reproducible from the published table.
6. How codes are tested
Codes are re-checked against multiple independent guides after every game update and event window (updates have gone live around 7:00 AM ET). We record the exact date of the last check on every code. We don't write "still working" without a fresh dated check — and reader reports of a dead code trigger a re-verification.
7. How corrections work
Spot an error? Contact us with what you saw in-game. Corrections re-run the full verification: source check, cross-check, then update with a new date. Every entity carries its own verifiedAt date, so corrections are visible per fact rather than hidden in a global "updated today."
8. Live counters
Player counts, visits and votes are snapshots from official Roblox APIs, always shown with their snapshot date. They're observations, not gameplay facts, and are never presented as permanent values.
Current source registry
35 registered sources, last accessed August 28, 2026:
Sources
- Official Roblox games API (game record)officialhttps://games.roblox.com/v1/games?universeIds=10561352230(accessed August 28, 2026)Raw snapshot archived at data/raw/roblox/2026-08-28/game.json
- Official Roblox games API (votes)officialhttps://games.roblox.com/v1/games/votes?universeIds=10561352230(accessed August 28, 2026)
- Official Roblox groups API (Wrestling Elephant Studio)officialhttps://groups.roblox.com/v1/groups/183340924(accessed August 28, 2026)
- Official Roblox game pageofficialhttps://www.roblox.com/games/103883942725157/1-Drain-Water-Per-Click(accessed August 28, 2026)
- Internal official-API archive snapshotofficialinternal archive(accessed August 25, 2026)Prior first-party collection of official endpoints (game record, votes, group, gamepasses) retained by this project.
- Official Discord server (invite)officialhttps://discord.com/invite/f965Yvk9DR(accessed August 28, 2026)Invite cited by Dexerto, Try Hard Guides, GameRant, Beebom and Nerd's Chalk as the official code-announcement channel. Content is not publicly indexable.
- Dexerto — +1 Drain Water Per Click codesthird-partyhttps://www.dexerto.com/roblox/1-drain-water-per-click-codes-3402087/(accessed August 28, 2026)Article dated August 26, 2026
- Try Hard Guides — +1 Drain Water Per Click codesthird-partyhttps://tryhardguides.com/1-drain-water-per-click-codes/(accessed August 28, 2026)Article dated August 25, 2026
- GameRant — +1 Drain Water Per Click codesthird-partyhttps://gamerant.com/plus-1-drain-water-per-click-codes-roblox/(accessed August 28, 2026)Article dated August 23, 2026
- Beebom — +1 Drain Water Per Click codesthird-partyhttps://beebom.com/plus-1-drain-water-per-click-codes/(accessed August 28, 2026)Article dated August 22, 2026
- Destructoid — +1 Drain Water Per Click codesthird-partyhttps://www.destructoid.com/1-drain-water-per-click-codes/(accessed August 28, 2026)Article dated August 28, 2026. First to list the Cthulhu code.
- Nerd's Chalk — +1 Drain Water Per Click codesthird-partyhttps://nerdschalk.com/1-drain-water-per-click-codes/(accessed August 28, 2026)Article dated August 28, 2026. Confirms the Cthulhu code.
- Sportskeeda — +1 Drain Water Per Click codesthird-partyhttps://www.sportskeeda.com/roblox-news/1-drain-water-per-click-codes(accessed August 28, 2026)Page blocked direct fetch (HTTP 403); listings corroborated via search snippets only.
- Pro Game Guides — +1 Drain Water Per Click codesthird-partyhttps://progameguides.com/roblox/1-drain-water-per-click-codes/(accessed August 28, 2026)Page blocked direct fetch (HTTP 403); listings corroborated via search snippets only.
- MrGuider — +1 Drain Water Per Click codesthird-partyhttps://www.mrguider.org/roblox/1-drain-water-per-click-codes/(accessed August 28, 2026)Snippet-level corroboration; its X post dates the Aug 22, 2026 code batch.
- drainwaterperclick.wiki (competitor wiki)third-partyhttps://drainwaterperclick.wiki/codes/(accessed August 28, 2026)Used for SERP gap analysis and cross-checking only; its data is never copied as fact.
- Official Roblox developer-products API (universe 10561352230)officialhttps://apis.roblox.com/developer-products/v2/universes/10561352230/developerproducts?page=1&limit=100(accessed August 29, 2026)Source of the real in-game pump shop icons (IconImageAssetId per product), fetched via thumbnails.roblox.com. Provenance per icon: data/icon-sources.json; fetch script: scripts/fetch-real-icons.ts. Also corroborates pump names and Robux prices.
- TechWiser — All Water Pumps in +1 Drain Water Per Clickthird-partyhttps://techwiser.com/1-drain-water-per-click-water-pumps/(accessed August 28, 2026)Full 21-pump table. IMPORTANT: its table traces to the same origin as the fan wikis (roonby.com, Aug 21) — one lineage, not independent corroboration. Used only for values that independent sources confirm.
- Roonby — All Water Pumps guide (origin of the pump roster)third-partyhttps://roonby.com/2026/08/all-water-pumps-in-1-drain-water-per-click-guide/(accessed August 28, 2026)The original 21-pump article (August 21, 2026) that TechWiser and the fan wikis reproduce. Single-lineage source for multipliers above ×12,500 and Water prices above Demon.
- rbxdata.com — live developer-product feed for universe 10561352230third-partyhttps://rbxdata.com/games/10561352230(accessed August 28, 2026)PRIMARY data: scrapes the game's actual Roblox developer products with Robux prices and first-tracked dates (121 products). Confirms pump names and all Robux tiers; reveals Planet/Mecha Kunka/Saber/UFO/Ignisthul.
- Bloxron — in-game verified pump & upgrade guidethird-partyhttps://bloxron.com/drain-water-per-click/upgrades(accessed August 28, 2026)Claims in-game verification, dated August 28, 2026. Confirms pump multipliers/prices through Demon, the dev-product-only shop, and documents the aura ladder (White ×1.2 → Rainbow ×10).
- TechWiser — Mutations in +1 Drain Water Per Clickthird-partyhttps://techwiser.com/mutations-1-drain-water-per-click/(accessed August 28, 2026)Gold ×2, Diamond ×5, Venom ×10, Hole ×20 (player-measured).
- allthings.how — +1 Drain Water Per Click mutationsthird-partyhttps://allthings.how/1-drain-water-per-click-mutations/(accessed August 28, 2026)Mutation multipliers, weather windows (+10% spawn, ~4 minutes).
- allthings.how — +1 Drain Water Per Click events schedulethird-partyhttps://allthings.how/1-drain-water-per-click-events-schedule/(accessed August 28, 2026)Dated Roblox event windows; article updated August 24, 2026.
- allthings.how — +1 Drain Water Per Click codesthird-partyhttps://allthings.how/1-drain-water-per-click-codes/(accessed August 28, 2026)Dated August 28, 2026 — among the first to list the Cthulhu code.
- Community gameplay videos (YouTube/TikTok/Facebook titles)communityinternal archive(accessed August 28, 2026)Legendary Egg / Water Egg / Chick Egg, Epic Jellyfish pet, Tralok Fish — title-level evidence only, each individually labeled unverified on entity pages.
- RFG (YouTube) — 23-min English gameplay video with fish names read from the UIcommunityhttps://www.youtube.com/watch?v=uk0avK_fGJY(accessed August 29, 2026)Published August 22, 2026. In-game footage shows pickups of Tropical Fish, Sea Urchin (Legendary), Pearl, Star, Patrick (incl. a Diamond variant), Sardine (Legendary), Lion Fish (Legendary), Venom Piranha (~2.4M sale), Tongue Thief, Venom Sunfish (Mythic, 1M value), Jellyfish, Narwhal and Orca (12.3M) in the icy second world, The Bloop (~12M), Julia (~24–88M), Leviathan, an unnamed Whale, and unnamed Secret fish in the deepest world. Caveat: 'Tralok' appears in the video title only — never spoken or shown in the video itself.
- ttoormgamer (YouTube) — 19-min Portuguese gameplay video (aquarium King + fish index)communityhttps://www.youtube.com/watch?v=6vBe7c-ZXYw(accessed August 29, 2026)Published August 28, 2026. Shows the sell-menu rarity ladder (comum/raro/épico/lendário/mítico/celestial/único/secreto — i.e. Common through Secret incl. Celestial and Unique), catches a Mosasaurus and a 'bone shark' (tubarão de ossos) during the venom event, references a Venom Whale and a Leviathan (which granted a title), and documents the fish weight (kg) system, the aquarium 'King' mechanic (heaviest fish) and index-completion titles.
- Nerd's Chalk — best fish mutations in +1 Drain Water Per Clickthird-partyhttps://nerdschalk.com/best-fish-mutations-drain-water-per-click/(accessed August 28, 2026)Confirms mutation multipliers and weather effects; caveats values are player measurements.
- Sportskeeda — +1 Drain Water Per Click beginner guidethird-partyhttps://www.sportskeeda.com/roblox-news/1-drain-water-per-click-a-beginner-s-guide(accessed August 28, 2026)Core loop, currencies, pumps > pets precedence, aquarium income, auras, upgrade order. Published August 22, 2026. Page blocked direct fetch; captured via search snapshots.
- Rolimon's game profilethird-partyhttps://www.rolimons.com/game/103883942725157(accessed August 28, 2026)Confirms no known gamepasses/badges, peak CCU ~54,643 (~Aug 23), linked 'Cthulhu World' place.
- 1-drainwaterperclick.wiki — tier list & data hub (competitor wiki)third-partyhttps://1-drainwaterperclick.wiki/(accessed August 28, 2026)Pump roster, pet list, updates tracker. Used for cross-verification only.
- 1-drainwaterperclick.wiki — beginner guide (competitor wiki)third-partyhttps://www.1-drainwaterperclick.wiki/guides/beginner-guide/(accessed August 28, 2026)Rebirth mechanics description (resets Water/pumps, permanent stacking multiplier). Used for cross-verification only.
- drainwaterperclick.top (competitor wiki)third-partyhttps://drainwaterperclick.top/(accessed August 28, 2026)Used for cross-checking pet/aquarium behavior only.
- LDPlayer — +1 Drain Water Per Click codesthird-partyhttps://www.ldplayer.net/blog/roblox-plus-1-drain-water-per-click-codes.html(accessed August 28, 2026)Confirms no verified codes existed as of August 20, 2026 — dates the code system's launch to ~August 22.
Values on this page are only as reliable as their sources. See our methodology for how data is collected and verified.
