Top lists / Water for houseplants
Best water for houseplants
Tap water is fine for most plants. For fluoride-sensitive ones, rainwater or distilled water is the usual advice; these bottled waters are low in sodium.
Criterion: Still water with published sodium of 10 mg/L or less and TDS or dry residue of 200 mg/L or less, from the brand’s own verified analysis. Lowest sodium first; ties are ordered by Waterphile Score. Fluoride is not part of our data, so check the label if your plant is fluoride-sensitive.
Flush pots with plenty of water now and then to stop salts building up, whatever water you use.
Why it matters
Most houseplants do fine on tap water. Softened water is the main one to avoid: it swaps calcium and magnesium for sodium, which builds up in the pot and harms roots. Some plants, such as spider plants, dracaenas, peace lilies and some palms, get brown leaf tips from the fluoride added to some tap water; extension services suggest rainwater, distilled or reverse-osmosis water for them. Chlorine usually clears if water stands overnight.
| # | Water | Sodium | TDS | Calcium | Compare |
|---|---|---|---|---|---|
| 1 | NiagaraUSA | Not detected | Not detectedTDS | Not detected | Compare |
| 2 | up&up Distilled WaterUSA | Not detected | Not detectedTDS | Not detected | Compare |
| 3 | Menehune WaterUSA (Hawaii) | Not detected | Not detectedTDS | Not detected | Compare |
| 4 | Kroger Purified Drinking WaterUSA | Not detected | Not detectedTDS | — | Compare |
| 5 | Market Pantry Purified Water (Target)USA | Not detected | Not detectedTDS | Not detected | Compare |
| 6 | Boxed Water Is BetterUSA | Not detected | Not detectedTDS | Not detected | Compare |
| 7 | PentaUSA | Not detected | Not detectedTDS | — | Compare |
| 8 | Good & Gather Alkaline WaterUSA | Not detected | Not detectedTDS | 2.2 mg/L | Compare |
| 9 | H-E-B Alkaline WaterUSA | Not detected | 43.5 mg/LTDS | 1.5 mg/L | Compare |
| 10 | Le BleuUSA | <0.1 mg/L | <10 mg/LTDS | <0.05 mg/L | Compare |
| 11 | DolomiaItaly | 0.2 mg/L | 105 mg/Ldry residue 180°C | 26.7 mg/L | Compare |
| 12 | Signature SpringsUSA | 0.5 mg/L | 14 mg/LTDS | 0.55 mg/L | Compare |
| 13 | AQUA CarpaticaRomania | 0.6 mg/L | 200 mg/LTDS | 52 mg/L | Compare |
| 14 | Eternal (Smoky Mountain, TN)USA | 0.6 mg/L | 100 mg/LTDS | 19 mg/L | Compare |
| 15 | 3 Springs WaterUSA | 0.6 mg/L | 21 mg/LTDS | 1.4 mg/L | Compare |
| 16 | S.BernardoItaly | 0.8 mg/L | 34.1 mg/Ldry residue 180°C | — | Compare |
| 17 | Bling H2OUSA | 0.9 mg/L | 95 mg/LTDS | 24 mg/L | Compare |
| 18 | LauretanaItaly | 0.9 mg/L | 14.4 mg/Ldry residue 180°C | 1 mg/L | Compare |
| 19 | Dorna Izvorul AlbRomania | 0.93 mg/L | 192 mg/Ldry residue 180°C | 62.73 mg/L | Compare |
| 20 | Himalayas Spring WaterNepal | 1 mg/L | 16 mg/LTDS | 1.2 mg/L | Compare |
USA
Italy
Romania
NepalSources (20)
- Niagara: Niagara Bottling Water Quality Report 2026, Purified Water column · checked 2026-10-25
- up&up Distilled Water: Target – Water Quality Analysis 2025 (official, 1 Gal up&up Distilled Water) · checked 2026-11-03
- Menehune Water: Menehune Water quarterly report, Q1 2018, purified finished product (hosted by Consumer Reports) · checked 2026-10-26
- Kroger Purified Drinking Water: Kroger bottled water annual collection test report 2016 (hosted by Consumer Reports) · checked 2026-10-26
- Market Pantry Purified Water (Target): Market Pantry (Target) water analysis report 2018, purified water (hosted by Consumer Reports) · checked 2026-10-26
- Boxed Water Is Better: Boxed Water Is Better water quality report, Q4 2018 (hosted by Consumer Reports) · checked 2026-10-25
- Penta: Penta Water Quality Report 2019 (pentawater.com) · checked 2026-10-25
- Good & Gather Alkaline Water: Target – Water Quality Analysis 2025 (official, 1 Gallon Good & Gather Alkaline Water) · checked 2026-11-03
- H-E-B Alkaline Water: H-E-B – Water Quality Analysis (2024), average of all bottling locations (official, newsroom.heb.com) · checked 2026-11-03
- Le Bleu: Le Bleu – Water Purity Test, EMSL Analytical, Ultra Pure, 14/12/2022 (official) · checked 2026-10-29
- Dolomia: Acqua Dolomia – Caratteristiche (official) · checked 2026-10-29
- Signature Springs: Signature Springs lab report (NTL), sampled 17 Jan 2018 (hosted by Consumer Reports) · checked 2026-10-26
- AQUA Carpatica: aquacarpatica.com – Products, still water analysis · checked 2026-10-25
- Eternal (Smoky Mountain, TN): Eternal 2026 Bottled Water Quality Report, Newport Springs Bottling (Proffit Spring Source) (eternalwater.com) · checked 2026-10-25
- 3 Springs Water: 3 Springs Water Company, spring source water lab report (NTL), sampled 4 Apr 2018 (hosted by Consumer Reports) · checked 2026-10-26
- S.Bernardo: S.Bernardo company brochure 2021 (sanbernardo.it) · checked 2026-10-29
- Bling H2O: Bling H2O report: English Mountain Springwater Co. natural spring water lab report (NTL), sampled 15 Mar 2016 (hosted by Consumer Reports) · checked 2026-10-26
- Lauretana: Università di Pavia, Dipartimento di Chimica – analysis for Lauretana S.p.A. dated 01.08.2024 (samples 26.06.2024), PDF on lauretana.com · checked 2026-10-26
- Dorna Izvorul Alb: coca-cola.com (Romania) – Dorna Izvorul Alb nutrition data (undated) · checked 2026-10-26
- Himalayas Spring Water: Himalayas Spring Water official site, 'Analysis in mg/L' (home page; same figures on the product page, which leaves pH blank; no analysis date given) · checked 2026-10-26
FAQ
Is tap water bad for houseplants?
Not for most plants. Softened water is the main one to avoid because of its sodium. Fluoride-sensitive plants such as spider plants and dracaenas may do better on rainwater or distilled water.
Values as published by each brand, per litre. Not medical advice.