CMWSSB Complaint Analytics

Street	Depot	Complaints	People
Thatchi Arunachalam Street	DEP 124	6	2
Nachiyappa Street	DEP 124	2	2
New Street	DEP 124	2	2
R.k. Mutt Road	DEP 124	2	2
Ramakrishnapuram 1St Street	DEP 124	2	2
Gandhi Nagar	DEP 124	1	1
Kesavaperumal East Street	DEP 124	1	1
Kesavaperumal South Street	DEP 124	1	1
Kutchery Road	DEP 124	1	1
Lala Thottam	DEP 124	1	1
Loganathan Colony	DEP 124	1	1
Nattu Muthu Kumarappan Street	DEP 124	1	1

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

CSV PDF

Street	Depot	Sewer	People
Kutchery Road	124	33	26
Alamelumangapuram	124	26	16
Nachiyappa Street	124	21	12
Solaiappan Street	124	19	11
Rakkiyappa Street	124	18	11
North Mada Street	124	15	9
Nattu Veerachi Street	124	14	8
Ramakrishnapuram 3Rd Street	124	14	6
Thatchi Arunachalam Street	124	14	9
Mundakakanni Amman Koil Street	124	13	13

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

CSV PDF

Street	Depot	Water	People
Thatchi Arunachalam Street	124	11	8
Madhavaperumal Koil Street	124	7	1
Mundakakanni Amman Koil Street	124	6	5
Solaiappan Street	124	6	3
Adam Street	124	5	4
Mandavelipakkam Street	124	5	5
Nanjunda Rao Colony	124	5	2
Viswalingapuram 2Nd Street (V.c.garden 2Nd Street)	124	5	4
Abraham Street	124	4	4
Kutchery Road	124	4	4

💧 Water Pollution (pollution complaints)

CSV PDF

Street	Depot	Pollut.	People
Nallappan Street	124	11	6
Thengur Selva Vinayakar Koil Street	124	11	9
Srinivasa Road	124	5	3
North Mada Street	124	4	2
Abraham Street	124	3	3
Loganathan Colony	124	3	2
Sundaragramani Thottam	124	3	2
Adam Street	124	2	2
Chitrakulam South Street	124	2	1
Kabaleeswarar Koil Sannathi Street	124	2	1

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

PDF

Category	Street	Depot	Times	Span (days)	Avg gap (days)	Per month
Others	Thatchi Arunachalam Street	124	6	443	88.6	0.41

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
Others vital	28	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		6	3	1	10
Tue		1	1	1	3
Wed		1		1	2
Thu		1	1		2
Fri		3	1		4
Sat		4	1		5
Sun			2		2
Total	0	16	9	3	28

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.