Product Library / Smart Pool

WaterGuru Sense

Compiled by SmartHomeWorkflow Research · WaterGuru · Smart Pool · ~$349 ($349 is WaterGuru's own store price for this product on 2026-08-10 — listed as 'WaterGuru SENSE S2 Pool Monitor' (SKU WG-SENSE-S2) and shown Sold Out at read time. WaterGuru's homepage now leads with a newer SENSE 3; this record describes the S2 generation. At time of research — never treated as a live price.)

Compatibility

Protocols: WIFI^[1]

Subscription reality^[5][9]

✓ Works without a subscription: Yes.

Vendor account required: Not established — we have not sourced this yet.

WaterGuru states it plainly: 'No. WaterGuru does not charge subscription fees. There are no ongoing software or service costs for using the device.' The recurring cost is a consumable, not a fee — measurement cassettes run roughly $120–240/yr depending on which cassette you buy and how long your season is.

Maintenance reality^[1][8]

• Batteries: C x4 — expect roughly 6 months per set
• Works without the internet: Not established — we have not sourced this yet. It does not mean the product fails without the internet.
• Four C-size alkaline cells, user-replaceable — WaterGuru's battery-replacement page instructs 'Insert 4 new C size batteries from recommended brand' and its FAQ names Energizer or Duracell, lasting approximately 6 months. Cassette replacement every 1–2 months in season: a refillable cassette 'contain[s] enough pads for 60 reads, which typically lasts about 2 months', the C5 lasts about one month and the C2 about two; unused cassettes keep about a year in storage. Skimmer-mounted.
• Security updates: No security-update support date is on record for this model yet. We haven't yet checked whether WaterGuru publishes one, so this is a gap in our research — not a statement about the manufacturer.

The catch

The cassette consumables (about monthly) are the real cost of ownership — budget for them. Current SKUs are the SENSE 2 and SENSE 3.

Who it's for

For pool owners who want daily water chemistry readings without test strips — and one of the few consumer water monitors still operating after the Sutro shutdown.

Sources & method

Numbered sources below back the facts marked with the matching number above. This is a research profile: compiled from manufacturer documentation, certification registries, and published testing — we state facts, not verdicts, and we have not physically tested this unit. How we work →

1. [1] 2026-07 web research sweep (docs/02 catalog; primary sources cited there) — registry-and-press research, verified 2026-07-12
   Backs: Price, Protocols, Maintenance, Service status
2. [2] waterguru.com (company confirmed ACTIVELY operating mid-2026 — live store, phone support, promos; no Sutro-style shutdown) — current SKUs SENSE 2 (~$349) and SENSE 3; no subscription; cassette consumables recurring — vendor-page research, verified 2026-07-15
3. [3] waterguru.com FAQ (Alexa skill for temperature/chemistry readings; Google integration retired with conversational actions; Siri voice commands on iPhone) + Amazon Alexa skill store listing 'SENSE Pool Care Smart Monitor by WaterGuru' — vendor-page research, verified 2026-07-17
   Backs: Google Home compatibility, Amazon Alexa compatibility, Apple Home compatibility
4. [4] smartthings: https://support.waterguru.com/hc/en-us + SmartThings partner search — vendor-page research, verified 2026-07-17
   Backs: SmartThings compatibility
5. [5] waterguru.com (company confirmed ACTIVELY operating mid-2026 — live store, phone support, promos; no Sutro-style shutdown) — current SKUs SENSE 2 (~$349) and SENSE 3; no subscription; cassette consumables recurring — vendor-page research, verified 2026-08-20
   Backs: Product identity, Market availability, Research status, Subscription
6. [6] Negative check, stated explicitly: home-assistant.io/integrations/waterguru returns HTTP 404 and WaterGuru appears nowhere in HA's official index (checked 2026-07-21); the community custom integration is cited as the mechanism only — vendor-and-ecosystem-page research, verified 2026-07-21
   Backs: Home Assistant compatibility
7. [7] waterguru.com read 2026-08-10 — product page waterguru.com/products/waterguru-sense (rendered: 'WaterGuru SENSE S2', '$349', 'Sold Out') cross-checked against the storefront's machine-readable product record (note 34, confirmed JSON): title 'WaterGuru SENSE S2 Pool Monitor', handle 'waterguru-sense', sku 'WG-SENSE-S2', price $349.00, available: false; homepage banner 'Get 10% Off SENSE 3 + Free Shipping' names the newer generation — vendor-page research, verified 2026-08-10
   Backs: Price, Product identity
8. [8] waterguru.com/pages/waterguru-battery-replacement read 2026-08-11: 'Insert 4 new C size batteries from recommended brand.' · waterguru.com/pages/faq read the same day: 'WaterGuru recommends Energizer or Duracell C-size alkaline batteries' lasting 'approximately 6 months' (SENSE 1/2); 'Refillable cassettes contain enough pads for 60 reads, which typically lasts about 2 months', the C5 'lasts one month' and the C2 'lasts 2 months', and 'Unused cassettes have a storage life of approximately 1 year when stored correctly' — vendor-page research, verified 2026-08-11
   Backs: Maintenance
9. [9] waterguru.com/pages/faq read 2026-08-11: 'No. WaterGuru does not charge subscription fees. There are no ongoing software or service costs for using the device.' The same FAQ documents the cassettes as purchased consumables with published read counts and lifespans. — vendor-page research, verified 2026-08-11
   Backs: Subscription
10. [10] waterguru.com/pages/faq read 2026-08-11 (launch date; SENSE 2 vs SENSE 3 differences stated with the S2 supported, no end-of-life or cutoff language anywhere) · waterguru.com homepage read the same day ('Get 10% Off SENSE 3 + Free Shipping', 'Call Us 1-844-989-GURU (4878) M-F 9am-6pm PST') · waterguru.com/products/waterguru-sense machine-readable product record: title 'WaterGuru SENSE S2 Pool Monitor', sku 'WG-SENSE-S2', price $349.00, available: false, published_at 2023-05-25T01:01:42-07:00 · ⚠ support.waterguru.com returned HTTP 403 on 2026-08-11 and was not worked around — vendor-page research, verified 2026-08-11
    Backs: Market availability, Service status, Research status
11. [11] waterguru.com's SENSE product page, read 2026-08-20. It publishes complete in-box lists — SENSE S2: "WaterGuru SENSE S2", "SENSE S2 C5 Cassette", "4 'C' Batteries", "Float Ring for Spas and Above Ground Pools", "Quick Start Guide"; SENSE S3: "WaterGuru SENSE S3", "SENSE C5+ Cassette", "Quick Start Guide" — and directs users to the app, but states nothing about Wi-Fi, network setup, or what the device connects to. — vendor-page research (BQ-191 provider backfill, population (b): the `hubs` axis), verified 2026-08-20
    Backs: Required hub or bridge
12. [12] No source was read for this entry. It records an edit so the edit is not silent, per the freshness guard's own instruction. — provenance URL backfill (BQ-212 tranche 8) — labelling pass, no re-verification, verified 2026-08-20
13. [13] Assessed 2026-08-22 across three surfaces. ① waterguru.com's FAQ, re-read 2026-08-22, on every voice path it documents: "You can link the WaterGuru skill in the Alexa app to ask about your pool's temperature and chemical readings"; that "Google removed support for conversational actions for Google Assistant and Google Home effective June 13, which retired the WaterGuru integration"; and that "WaterGuru supports Siri voice commands on iPhone". The same FAQ lists what the device measures — Free Chlorine, pH, Total Alkalinity, Cyanuric Acid, Calcium Hardness, water temperature and water flow on SENSE 2 and 3, with SENSE 1 measuring Free Chlorine, pH, temperature and flow. ② The community Home Assistant integration dwradcliffe/home-assistant-waterguru, read 2026-08-22 — "This is a Home Assistant integration for the WaterGuru Automated Smart Pool Water Monitor product", with the disclaimer "NOTE: This is not any kind of official integration or support. Use at your own risk." ③ Its upstream API client bdwilson/waterguru-api, read the same day. — counterparty-source check, verified 2026-08-22
    Backs: Capabilities

Compatibility and lifecycle information reflects the last-verified date above and can change without notice (firmware updates, cloud-service changes, discontinuations). It is provided as-is, for information — verify with the manufacturer before purchasing. Spot an error? Tell us and we'll fix it. Full terms: Terms of Service.

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