CMWSSB Complaint Analytics

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
No issue recurred often enough in this scope.

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
Hand Pump Repair vital	4	100%	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	1
Tue					0
Wed				1	1
Thu					0
Fri		1			1
Sat					0
Sun			1		1
Total	0	1	1	2	4

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
Not enough overlapping complaints in this scope.