CMWSSB Complaint Analytics

Street	Depot	Complaints	People
Kutchery Road	DEP 124	40	33
Thatchi Arunachalam Street	DEP 124	31	17
Alamelumangapuram	DEP 124	29	18
Solaiappan Street	DEP 124	27	16
Nachiyappa Street	DEP 124	24	15
Mundakakanni Amman Koil Street	DEP 124	23	20
Nallappan Street	DEP 124	23	14
North Mada Street	DEP 124	22	13
Thengur Selva Vinayakar Koil Street	DEP 124	21	16
R.k. Mutt Road	DEP 124	19	16
Rakkiyappa Street	DEP 124	19	11
New Street	DEP 124	17	12

🛠 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
Sewer Main Block	Kutchery Road	124	22	522	24.9	1.26
Sewer Main Block	Alamelumangapuram	124	21	403	20.2	1.56
Sewer Main Block	Nattu Veerachi Street	124	14	327	25.1	1.28
Sewer Main Block	Rakkiyappa Street	124	13	538	44.9	0.72
Sewer Main Block	Solaiappan Street	124	13	444	37	0.88
Sewer Main Block	Nachiyappa Street	124	12	512	46.6	0.7
Sewer Main Block	R.k. Mutt Road	124	12	375	34.1	0.96
Sewer - House Block	Kutchery Road	124	11	446	44.6	0.74
Water Pollution	Nallappan Street	124	11	368	36.8	0.9
Water Pollution	Thengur Selva Vinayakar Koil Street	124	11	415	41.5	0.8
Sewer - House Block	North Mada Street	124	10	462	51.3	0.65
Sewer Main Block	Shanmugam Pillai Street	124	10	479	53.3	0.63

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	309	45.5%	45.5%
Sewer - House Block vital	108	15.9%	61.4%
No Water Supply vital	106	15.6%	77%
Water Pollution vital	65	9.6%	86.6%
Others	28	4.1%	90.7%
Sewer Machine Hole Open (or) Broken	18	2.7%	93.4%
Water Leakage in Service Line / Main Line	14	2.1%	95.4%
Water Short Supply	14	2.1%	97.5%
Hand Pump Repair	7	1%	98.5%
New Water Connection Renewal	4	0.6%	99.1%
Booking Issues	2	0.3%	99.4%
Street Tank Supply Not Made	2	0.3%	99.7%
New Sewer Connection Renewal	1	0.1%	99.9%
Rain Water Stagnation	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		57	43	16	116
Tue	1	49	29	14	93
Wed		51	41	24	116
Thu		45	36	13	94
Fri	2	45	37	11	95
Sat		57	34	11	102
Sun		32	25	6	63
Total	3	336	245	95	679

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	36
Sewer - House Block	Sewer Main Block	31
No Water Supply	Sewer - House Block	23
Sewer Main Block	Water Pollution	22
No Water Supply	Water Pollution	17
Others	Sewer Main Block	16
Sewer - House Block	Water Pollution	15
Sewer Machine Hole Open (or) Broken	Sewer Main Block	13
No Water Supply	Others	11
Others	Sewer - House Block	10
Sewer Main Block	Water Leakage in Service Line / Main Line	10
No Water Supply	Sewer Machine Hole Open (or) Broken	9