CMWSSB Complaint Analytics

Street	Depot	Complaints	People
Rajasekaran Lane	DEP 121	38	6
Sir. P.s.sivasamy Salai	DEP 121	35	19
Hamilton Bridge 2Nd Street	DEP 121	34	4
Dr. Radhakrishnan Road	DEP 121	31	23
Appasamy Koil Street	DEP 121	26	20
Thiruveethiamman Kovil Street	DEP 121	25	14
Dr.natesan Road	DEP 121	24	17
Rayapet Highroad 3Rd Street (Alias) Thiru Vi Ka 3Rd Street	DEP 121	23	12
Veeraperumal Street	DEP 121	22	13
Avvai Shanmugam Salai (Alias) Llyods Road	DEP 121	21	16
Rajasekara Road	DEP 121	21	8
Dr. Radhakrishnan Road 4Th Street	DEP 121	20	6

🛠 Sewer Complaints (main block · house block · overflow)

CSV PDF

Street	Depot	Sewer	People
Rajasekaran Lane	121	36	6
Hamilton Bridge 2Nd Street	121	33	3
Dr.natesan Road	121	17	15
Chidhambarasamy 2Nd Street	121	16	7
Sir. P.s.sivasamy Salai	121	16	10
Dwaraga Nagar Colony 3Rd Street	121	15	8
Rayapet Highroad 3Rd Street (Alias) Thiru Vi Ka 3Rd Street	121	15	5
Veeraperumal Street	121	15	9
Pappu Masthan Durga Main Street	121	14	9
Mundakanniamman Koil Street	121	13	7

🚰 Water Complaints (no supply · short supply · leaks)

CSV PDF

Street	Depot	Water	People
Dr. Radhakrishnan Road	121	17	15
Dr. Radhakrishnan Road 4Th Street	121	15	5
Dr. Radhakrishnan Road 9Th Street	121	14	6
Sir. P.s.sivasamy Salai	121	13	7
Appasamy Koil Street	121	11	9
Thiruveethiamman Kovil Street	121	11	6
Chandra Baugh Avenue 2Nd Street	121	9	6
Rajasekara Road	121	9	4
Balakrishnan Road	121	7	4
Veeraperumal Street	121	6	3

💧 Water Pollution (pollution complaints)

CSV PDF

Street	Depot	Pollut.	People
Appasamy Koil Street	121	8	7
Ragavan Garden 1St Lane	121	6	2
Avvai Shanmugam Salai (Alias) Llyods Road	121	5	5
Ismail Sahib Ground Main Road	121	5	5
Ragavan Garden Main Road	121	5	1
Rayapet Highroad 3Rd Street (Alias) Thiru Vi Ka 3Rd Street	121	5	5
Mekkapuram Main Street	121	4	1
Dr.natesan Road	121	3	2
Pappu Masthan Durga Main Street	121	3	2
Thiruveethiamman Kovil Street	121	3	2

🔁 Recurrence — how often the same issue comes back (same category · same street)

PDF

Category	Street	Depot	Times	Span (days)	Avg gap (days)	Per month
Sewer Main Block	Rajasekaran Lane	121	35	551	16.2	1.91
Sewer Main Block	Hamilton Bridge 2Nd Street	121	28	507	18.8	1.66
Sewer Main Block	Chidhambarasamy 2Nd Street	121	16	510	34	0.94
Sewer Main Block	Dr.natesan Road	121	16	559	37.3	0.86
Sewer Main Block	Rayapet Highroad 3Rd Street (Alias) Thiru Vi Ka 3Rd Street	121	15	365	26.1	1.23
Sewer Main Block	Veeraperumal Street	121	15	480	34.3	0.94
No Water Supply	Dr. Radhakrishnan Road	121	14	465	35.8	0.9
No Water Supply	Dr. Radhakrishnan Road 4Th Street	121	13	426	35.5	0.92
Sewer Main Block	Mundakanniamman Koil Street	121	13	449	37.4	0.87
Sewer Main Block	Pappu Masthan Durga Main Street	121	13	470	39.2	0.83
Sewer Main Block	Sir. P.s.sivasamy Salai	121	13	504	42	0.77
Sewer Main Block	Dwaraga Nagar Colony 3Rd Street	121	12	395	35.9	0.91

Avg gap = average days between consecutive complaints of that type on that street. Lower gap / higher “per month” = a faster-recurring, unresolved problem.

🔬 Advanced Analysis

Pareto — the vital few (which categories drive most complaints)

Categories ordered by volume with their cumulative share. The highlighted rows are the smallest set that together account for ~80% of all complaints — fix these first.

Category	Count	Share	Cumulative
Sewer Main Block vital	390	49.2%	49.2%
No Water Supply vital	194	24.5%	73.6%
Water Pollution vital	79	10%	83.6%
Sewer - House Block	46	5.8%	89.4%
Others	29	3.7%	93.1%
Water Short Supply	15	1.9%	95%
Sewer Machine Hole Open (or) Broken	14	1.8%	96.7%
Water Leakage in Service Line / Main Line	13	1.6%	98.4%
Hand Pump Repair	4	0.5%	98.9%
New Water Connection Renewal	4	0.5%	99.4%
Booking Issues	1	0.1%	99.5%
Faulty Water Meter	1	0.1%	99.6%
New Sewer Connection Not Yet Given	1	0.1%	99.7%
Unclosed Roads	1	0.1%	99.9%
New Sewer Connection Renewal	1	0.1%	100%

When complaints arrive (weekday × time of day)

Load pattern across the week — darker cells are busier six-hour windows. Useful for staffing and planning proactive checks before the peak.

	Night	Morning	Afternoon	Evening	Total
Mon	1	61	41	21	124
Tue	2	55	49	28	134
Wed	2	60	52	16	130
Thu		53	47	16	116
Fri	2	62	44	18	126
Sat	1	41	33	12	87
Sun	2	35	27	12	76
Total	10	367	293	123	793

Linked problems (category pairs that hit the same streets)

Pairs of issue types that recur together on the same street, ranked by the number of streets where both appear. Strong pairs point to a shared root cause worth fixing in one visit.

Problem A	Problem B	Shared streets
No Water Supply	Sewer Main Block	45
Sewer Main Block	Water Pollution	27
Sewer - House Block	Sewer Main Block	23
No Water Supply	Water Pollution	20
No Water Supply	Sewer - House Block	17
No Water Supply	Others	15
Others	Sewer Main Block	15
Others	Water Pollution	12
Sewer - House Block	Water Pollution	12
No Water Supply	Water Short Supply	10
Sewer Machine Hole Open (or) Broken	Sewer Main Block	10
Sewer Main Block	Water Short Supply	9