CMWSSB Complaint Analytics

Street	Depot	Complaints	People
North Crescent Road	DEP 117	2	2
Chandra Baugh Avenue 2Nd Street	DEP 121	2	1
Bajanai Koil Street (East)	DEP 109	1	1
Bajanai Koil Street 1St Lane	DEP 109	1	1
Arumugappa Street	DEP 114	1	1
Venkatarathinam Salai	DEP 118	1	1
Boat Club I Avenue	DEP 122	1	1
Ganeshpuram 4Th Street	DEP 122	1	1
Luz Avenue	DEP 123	1	1
Srilafthi Colony	DEP 123	1	1
Dmonte Street	DEP 125	1	1

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

CSV PDF

Street	Depot	Sewer	People
South Sivan Koil Street	112	3	3
Model School Road	111	2	2
Jayalakshmi Nagar	109	1	1
Sherfudin Street	109	1	1
Gopalapuram 6Th Street	111	1	1
Peters Lane	111	1	1
Thiruveethian Street	111	1	1
Arokiyasamy Street	112	1	1
Sowrashtra Nagar 1St Street	112	1	1
Sowrashtra Nagar 5Th Street	112	1	1

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

CSV PDF

Street	Depot	Water	People
Pudupet Garden Street	118	2	2
Mayor Chitti Babu Street	114	1	1
Nallathambi Mudali Street	116	1	1
Ammaiappan Street	118	1	1
Lloyds Colony Main Road	119	1	1
East Abiramapuram 3Rd Street	123	1	1
Kuyil Thottam S.c.b. Tenement	125	1	1
Madha Church Road	126	1	1

💧 Water Pollution (pollution complaints)

CSV PDF

Street	Depot	Pollut.	People
North Crescent Road	117	2	2
Chandra Baugh Avenue 2Nd Street	121	2	1
Bajanai Koil Street (East)	109	1	1
Bajanai Koil Street 1St Lane	109	1	1
Arumugappa Street	114	1	1
Venkatarathinam Salai	118	1	1
Boat Club I Avenue	122	1	1
Ganeshpuram 4Th Street	122	1	1
Luz Avenue	123	1	1
Srilafthi Colony	123	1	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
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
Water Pollution vital	13	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					0
Tue					0
Wed					0
Thu				2	2
Fri		3	1	1	5
Sat	1	2			3
Sun		2	1		3
Total	1	7	2	3	13

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.