Analyte™ Water Quality Report — The Blue Paper Lab LLP

ANALYTE™

Report Number BPL/YTL/DW/2025/0847

Sample ID ANL-25-09-0412

Date of Sampling 12 Sep 2025, 09:34 IST

Report Issued 15 Sep 2025

Sample & Source Details

Submitted By Smt. Pushpa Rambhau Deshmukh

Source Description Household Borewell (180 ft depth)

Village / Taluka Maregaon, Umarkhed Taluka

District · State Yavatmal · Maharashtra

GPS Coordinates 20.2543° N, 77.6891° E

WCI Grid Reference MH-YTL-UMK-0412

Water Use Type Drinking · Cooking · Domestic

Collection Operator BPL-OPS-007 · Suresh K.

68

Water Contamination
Index Score

/100

Not Compliant — High Risk

This water source is unsafe for direct consumption without treatment. The WCI score of 68/100 places it in the High Risk band. Three parameters exceed BIS IS:10500-2012 acceptable limits, including one no-relaxation exceedance (Fluoride). Immediate installation of an RO + Activated Alumina filtration system is mandatory before use for drinking or cooking.

Critical

Fluoride (F⁻)

3.18 mg/L · 3.2× limit

Exceeds permissible limit of 1.5 mg/L with no relaxation. Causes dental & skeletal fluorosis. Requires immediate defluoridation.

Risk

Nitrate (NO₃⁻)

72.4 mg/L · 1.6× limit

Exceeds acceptable limit of 45 mg/L (no relaxation). Risk of Blue Baby Syndrome in infants. Do NOT use for infant feeding.

Risk

Aluminium (Al)

0.08 mg/L · 2.7× limit

Exceeds acceptable limit of 0.03 mg/L. Emerging neurotoxicity risk at chronic exposure. Removed effectively by RO.

28

Parameters Pass

6

Exceed Acceptable

2

Exceed Permissible

1

No-Relaxation Fail

🔵

RO System with Activated Alumina (AA) Post-Filter — Mandatory

Standard RO + AA defluoridation stage + UF pre-filter. Min. RO rejection ≥95% for TDS, F⁻, NO₃⁻. Compliant with IS:14616 / NSF-58. AA media to be replaced every 6 months. Install TDS controller to retain optimal mineral balance (target 150–250 mg/L output).

Analyst / Tested By

Mr. P. Meshram, M.Sc. Chemistry

Senior Analyst · NABL-accredited partner laboratory

Employee ID: NLN-ANA-018 · Date: 14 Sep 2025

Reviewed & Verified By

Dr. S. Kolhe, Ph.D. (Env. Sci.)

Technical Manager · NABL-accredited partner laboratory

NABL Signatory · Date: 15 Sep 2025

Issued By

The Blue Paper Lab LLP

Analyte™ Platform · Report ID: BPL/YTL/DW/2025/0847

Designated Partner stamp · 15 Sep 2025

— End of Water Quality Certificate (Page 1 of 4) — Detailed Analytical Report continues on Pages 2–4

ANALYTE™

01 · Sample Information & Collection Details

Sample Submitted By Smt. Pushpa Rambhau Deshmukh

Source Description Household Borewell (180 ft depth)

Water Use Type Drinking · Cooking · Domestic

Village / Ward Maregaon, Umarkhed Taluka

District · State Yavatmal · Maharashtra

Source Type Borewell / Groundwater

Sample Container 1L HDPE (Sterile) + 250mL Glass

Preservation / Transport 4°C cold chain · <24h to lab

Collected By (Operator ID) BPL-OPS-007 · Suresh K.

📍

GPS Coordinates (Auto-captured) 20.2543° N, 77.6891° E

Plus Code 5HXC+R7 Maregaon

WCI Grid Reference MH-YTL-UMK-0412

Altitude 412 m ASL

02 · Water Contamination Index (WCI) — Model & Composite Score

68 /100

High Risk — Unsafe for Direct Consumption

This water source scores 68/100 on the Analyte™ WCI. Primary exceedances: Fluoride (3.2× limit), Nitrate (1.6× limit), Aluminium (2.7× limit). Immediate treatment required before any domestic use.

WCI Scale

0–25 Safe

26–50 Moderate

51–75 High Risk THIS

76–100 Critical

WCI Model: WCI = Σ (wᵢ × Sᵢ) where Sᵢ = min(100, (Cᵢ / Lᵢ) × 100)
Cᵢ = measured concentration · Lᵢ = BIS IS:10500-2012 Acceptable Limit · wᵢ = parameter weight
Reference Standard: BIS IS:10500-2012 · WHO GDWQ 4th Ed. · CPCB Guidelines

E.coli / TCw=0.18

Fluoride (F⁻)w=0.15

Arsenic (As)w=0.14

Nitrate (NO₃)w=0.12

Lead (Pb)w=0.12

TDSw=0.06

pHw=0.05

Hardnessw=0.05

03 · Analytical Results — All Parameters (BIS IS:10500-2012)

ND = Not Detected · <DL = below detection limit · ± = expanded uncertainty (k=2, 95% confidence) · All values mg/L unless stated · Methods: IS:3025 / APHA 23rd Ed. / IS:1622

Parameter	Test Method	Result	Uncertainty	Acceptable Limit	Permissible Limit	Status	WCI Sub-Index
A · Organoleptic & Physical Parameters
Colour Hazen Units (HU)	IS:3025-P4	3 HU	±0.5	5 HU	15 HU	Safe	30
Odour Threshold Odour Number	IS:3025-P5	Agreeable	—	Agreeable	—	Safe	10
Taste Organoleptic Assessment	IS:3025-P5	Slightly Bitter	—	Agreeable	—	Warn	55
Turbidity Nephelometric (NTU)	IS:3025-P10	1.8 NTU	±0.2	1 NTU	5 NTU	Warn	36
pH Electrometric	IS:3025-P11	7.8	±0.05	6.5 – 8.5	No relax.	Safe	15
Total Dissolved Solids Gravimetric (105°C)	IS:3025-P16	724 mg/L	±12	500 mg/L	2000 mg/L	Warn	72
Electrical Conductivity μS/cm at 25°C	IS:3025-P14	1148 μS/cm	±18	(Indicative)	3000 μS/cm	Warn	38
B · Chemical Parameters — Inorganic (General)
Total Hardness (as CaCO₃) EDTA Titrimetric	IS:3025-P21	386 mg/L	±8	200 mg/L	600 mg/L	Warn	64
Calcium (as Ca) EDTA Titrimetric	IS:3025-P40	94 mg/L	±3	75 mg/L	200 mg/L	Warn	47
Magnesium (as Mg) Calculation / AAS	IS:3025-P46	28 mg/L	±1.5	30 mg/L	100 mg/L	Safe	28
Chloride (as Cl⁻) Argentometric / Mohr's	IS:3025-P32	148 mg/L	±4	250 mg/L	1000 mg/L	Safe	30
Sulphate (as SO₄²⁻) Turbidimetric	IS:3025-P24	182 mg/L	±6	200 mg/L	400 mg/L	Safe	45
Nitrate (as NO₃⁻) UV Spectrophotometric	IS:3025-P34	72.4 mg/L	±2.1	45 mg/L	No relax.	Risk ▲	100
Nitrite (as NO₂⁻) Colorimetric (Griess)	IS:3025-P34	<0.02 mg/L	±0.005	—	—	Safe	5
Fluoride (as F⁻) Ion-Selective Electrode / SPADNS	IS:3025-P60	3.18 mg/L	±0.09	1.0 mg/L	1.5 mg/L	Critical ✕	100
Alkalinity (as CaCO₃) Titrimetric (Phenolph. + MO)	IS:3025-P23	264 mg/L	±6	200 mg/L	600 mg/L	Warn	66
Iron (as Fe) 1,10-Phenanthroline (AAS confirm)	IS:3025-P53	0.22 mg/L	±0.02	0.3 mg/L	1.0 mg/L	Safe	22
Manganese (as Mn) AAS Flame / Periodate Method	IS:3025-P59	0.08 mg/L	±0.01	0.1 mg/L	0.3 mg/L	Safe	40
Copper (as Cu) AAS Flame / Neocuproine	IS:3025-P42	0.03 mg/L	±0.005	0.05 mg/L	1.5 mg/L	Safe	20
Zinc (as Zn) AAS Flame / Dithizone	IS:3025-P49	0.8 mg/L	±0.04	5.0 mg/L	15 mg/L	Safe	16
Aluminium (as Al) Eriochrome Cyanine R / ICP-OES	IS:3025-P57	0.08 mg/L	±0.008	0.03 mg/L	0.2 mg/L	Risk ▲	80
Boron (as B) Curcumin / ICP-OES	IS:3025-P2	0.4 mg/L	±0.03	1.0 mg/L	5.0 mg/L	Safe	20
Ammonia (as NH₃) Nessler's / ISE Method	IS:3025-P34	0.18 mg/L	±0.01	0.5 mg/L	—	Safe	18
Residual Free Chlorine DPD Colorimetric	IS:3025-P26	ND	—	0.2 mg/L (min)	—	Not Det.	—

ANALYTE™

Continued from Page 2 · Groups C–F: Toxic, Organic, Radioactive & Bacteriological Parameters

Parameter	Test Method	Result	Uncertainty	Acceptable Limit	Permissible Limit	Status	WCI Sub-Index
C · Toxic Parameters — Heavy Metals & Metalloids (IS:10500 Table 3)
Arsenic (total, as As) SDDC / Hydride AAS	IS:3025-P37	<0.005 mg/L	±0.001	0.01 mg/L	0.05 mg/L	Safe	10
Lead (as Pb) GFAAS / ICP-MS	IS:3025-P47	<0.005 mg/L	±0.001	0.01 mg/L	No relax.	Safe	10
Mercury (as Hg) Cold Vapour AAS / Mercury Analyser	IS:3025-P48	ND (<0.0002)	±0.0001	0.001 mg/L	No relax.	Safe	5
Cadmium (as Cd) GFAAS / ICP-OES	IS:3025-P41	ND (<0.001)	±0.0003	0.003 mg/L	No relax.	Safe	5
Nickel (as Ni) AAS / ICP-OES	IS:3025-P54	0.01 mg/L	±0.002	0.02 mg/L	No relax.	Safe	25
Hexavalent Chromium (as Cr⁶⁺) 1,5-Diphenylcarbazide / ICP-OES	APHA 3500-Cr B	ND (<0.01)	±0.003	0.05 mg/L	No relax.	Safe	5
Molybdenum (as Mo) ICP-OES / ICP-MS	IS:3025-P2	<0.01 mg/L	±0.002	0.07 mg/L	No relax.	Safe	7
Cyanide (as CN⁻) Pyridine-Pyrazolone / ISE	IS:3025-P27	ND (<0.005)	±0.002	0.05 mg/L	No relax.	Safe	5
Selenium (as Se) Hydride AAS / GFAAS	IS:3025-P2	<0.005 mg/L	±0.001	0.01 mg/L	No relax.	Safe	10
D · Organic & Emerging Parameters (IS:10500 Table 3)
Total Pesticides (screen) GC-MS multi-residue panel	IS:10500 Table 5	<0.1 μg/L	±0.02	0.1 μg/L	No relax.	Safe	10
Polychlorinated Biphenyls (PCBs) GC-ECD / GC-MS	ASTM D5175 / APHA 6630	ND	—	0.0005 mg/L	No relax.	Safe	5
PAH (Polynuclear Aromatic Hydrocarbons) HPLC / GC-MS fluorescence	APHA 6440	ND	—	0.0001 mg/L	No relax.	Safe	5
Trihalomethanes (THMs total) P&T GC-MS / LLE GC-ECD	APHA 6232-B	ND	—	0.1 mg/L	No relax.	Safe	5
Mineral Oil IR Spectrometry / Hexane extraction	IS:3025-P39	ND	—	0.01 mg/L	No relax.	Safe	5
Phenolic Compounds 4-AAP Colorimetric	IS:3025-P43	<0.001 mg/L	±0.0002	0.001 mg/L	0.002 mg/L	Safe	50
Sulphide (as S²⁻) Methylene Blue / ISE	IS:3025-P29	ND	—	0.05 mg/L	No relax.	Safe	5
E · Radioactive Parameters (IS:10500 Table 4)
Gross Alpha Activity Evaporation + GM counting	IS:3025-P56	0.08 Bq/L	±0.02	0.1 Bq/L	No relax.	Safe	40
Gross Beta Activity Evaporation + GM counting	IS:3025-P56	0.4 Bq/L	±0.05	1.0 Bq/L	No relax.	Safe	20
F · Bacteriological, Virological & Biological (IS:10500 Table 6 + Annex B)
E. coli (Thermotolerant Coliform) MPN / Membrane Filtration	IS:1622 / APHA 9222-B	0 MPN/100mL	—	Absent / 100mL	No relax.	Safe	0
Total Coliform Count MPN / Membrane Filtration (35°C, 48h)	IS:1622 / APHA 9222-B	0 MPN/100mL	—	Absent / 100mL	No relax.	Safe	0
Faecal Streptococci Azide-Dextrose Broth MPN	IS:1622	Absent	—	Absent	—	Safe	0
Heterotrophic Plate Count (HPC) Pour Plate, R2A Agar, 22°C, 72h	APHA 9215-B	42 CFU/mL	±6	500 CFU/mL	—	Safe	9
Biological Examination Microscopical (algae, protozoa, zooplankton)	IS:3025-P58	Nil observed	—	Nil	—	Safe	5

04 · Primary Exceedances — Health Risk Interpretation

Critical Fluoride — 3.18 mg/L (3.2× limit)

Health effects: Dental fluorosis, skeletal fluorosis at chronic exposure above 1.5 mg/L. Prevalent in Vidarbha's crystalline aquifers. No safe relaxation permitted. Children and pregnant women at highest risk. Long-term consumption at this level causes irreversible bone damage.

Risk Nitrate — 72.4 mg/L (1.6× limit)

Health effects: Methaemoglobinaemia (Blue Baby Syndrome) in infants under 6 months. Likely source: cotton/soybean fertiliser leaching in Umarkhed taluka. No relaxation in IS:10500. WHO guideline also 50 mg/L. Do NOT use for infant feeding or preparation of infant formula.

Risk Aluminium — 0.08 mg/L (2.7× limit)

Health effects: Emerging evidence of neurotoxicity at chronic elevated exposure. Possible coagulant carry-over from upstream treatment or natural leaching. Acceptable limit is stringent at 0.03 mg/L. Dementia risk association under research. RO effectively removes aluminium.

05 · Treatment Advisory & Household Filter Recommendation

Contaminant	Recommended Treatment	Expected Output (Post-Treatment)	Priority	Estimated Cost
Fluoride 3.18 mg/L	RO (≥95% rejection) + Activated Alumina polishing stage. For community scale: Nalgonda Technique or electrodialysis reversal.	<0.5 mg/L (safe for all ages)	Immediate	₹8,000–20,000 household RO
Nitrate 72.4 mg/L	RO (rejects 85–95% NO₃⁻) or anion exchange resin. Do not boil — concentrates nitrates. Do not use for infants.	<10 mg/L (well within limit)	Immediate	Same RO unit (dual benefit)
Aluminium 0.08 mg/L	RO or activated carbon + coagulation. Check if upstream treatment plant is over-dosing alum coagulant.	<0.01 mg/L	Short-term	Covered by RO unit
TDS 724 mg/L	RO reduces TDS to 50–150 mg/L. Install TDS controller/blending valve to retain minerals and prevent de-mineralised water.	150–250 mg/L (optimal range)	Medium-term	₹500–800 TDS controller
Hardness 386 mg/L	Softener (for appliances) — not a health concern at this level. RO will also reduce hardness. Consider scale inhibitor for geyser.	<150 mg/L (soft)	Medium-term	₹3,000–6,000 softener

ANALYTE™

06 · Chain of Custody — Sample Integrity Record

Step 1 · Collection

Suresh K. (BPL-OPS-007)

12 Sep 2025 · 09:34 IST

Van ID: BPL-VAN-01

Container sealed, labelled

Step 2 · Transport

Cold-chain courier (4°C)

Dispatch: 12 Sep 2025 · 14:00

Receipt at Partner Lab

12 Sep 2025 · 17:45 IST

Step 3 · Lab Receipt

Lab Manager

Logged: 12 Sep 2025 · 17:50

Condition: Intact, within temp.

Lab Accession: NLN-25-4821

Step 4 · Analysis Complete

Reviewed by: Dr. S. Kolhe

Analysis: 13–14 Sep 2025

QC check: 14 Sep 2025

Report issued: 15 Sep 2025

07 · Overall Compliance Summary vs BIS IS:10500-2012

28

Parameters Pass

6

Exceed Acceptable

2

Exceed Permissible

1

No-Relaxation Fail

Overall Verdict: Not Compliant with BIS IS:10500-2012 — Unsafe for Direct Consumption Without Treatment

Fluoride at 3.18 mg/L exceeds the permissible limit of 1.5 mg/L (no relaxation beyond this). Nitrate at 72.4 mg/L exceeds the acceptable limit of 45 mg/L (no relaxation for nitrate). Treatment mandatory before any domestic use.

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ULR: NABL/TC-XXXX/2025/0847

08 · Authorisation & Signatures

Analyst / Tested By

Mr. P. Meshram, M.Sc. Chemistry

Senior Analyst · NABL-accredited partner laboratory

Employee ID: NLN-ANA-018 · Date: 14 Sep 2025

Reviewed & Verified By

Dr. S. Kolhe, Ph.D. (Env. Sci.)

Technical Manager · NABL-accredited partner laboratory

NABL Signatory · Date: 15 Sep 2025

Issued By

The Blue Paper Lab LLP

Analyte™ Platform · Report ID: BPL/YTL/DW/2025/0847

Designated Partner stamp · 15 Sep 2025

This report relates solely to the sample(s) tested and does not necessarily represent the quality of the water source at any other time or location. Results are valid at the time of sampling only. This report may not be reproduced, except in full, without the written approval of the issuing laboratory. The laboratory bears no responsibility for the accuracy of information provided by the client regarding sample identity or source description. Measurement uncertainty is calculated at k=2 (approximately 95% confidence interval) per NABL/ILAC guidelines. This report is accredited under NABL Certificate No. TC-XXXX in association with ISO/IEC 17025:2017. The Analyte™ WCI (Water Contamination Index) scoring model is proprietary to The Blue Paper Lab LLP and is not part of the NABL accreditation scope. Reference standards: BIS IS:10500-2012 (Second Revision), WHO Guidelines for Drinking-Water Quality (4th Ed.), IS:3025 (Parts 1–62), IS:1622, APHA Standard Methods 23rd Ed.