MILFORD TOWN OF
NPDES ID: NH0100471
S — SNC: Compliance schedule violation
The facility missed a deadline in its compliance schedule by more than 90 days.
This quarter: 4 effluent violations.
Violations
May 31, 2026
Copper, total [as Cu]
23% over limit
Discharged 0.02 mg/L against a permitted limit of 0.0162 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total [as Cu]
39% over limit
Discharged 0.02 mg/L against a permitted limit of 0.0144 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
652% over limit
Discharged 10.23724591 kg/d against a permitted limit of 1.36199999 kg/d (MO AVG)
DMR, Limited - Numeric Violation
April 30, 2026
Phosphorus, total [as P]
578% over limit
Discharged 9.23799192 kg/d against a permitted limit of 1.36199999 kg/d (MO AVG)
DMR, Limited - Numeric Violation
March 31, 2026
E. coli, thermotol, MF, MTEC
51% over limit
Discharged 613.1 MPN/100mL against a permitted limit of 406 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
February 28, 2026
Copper, total [as Cu]
23% over limit
Discharged 0.02 mg/L against a permitted limit of 0.0162 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total [as Cu]
4% over limit
Discharged 0.015 mg/L against a permitted limit of 0.0144 mg/L (MO AVG)
DMR, Limited - Numeric Violation
December 31, 2025
Solids, total suspended
38% over limit
Discharged 20.68 mg/L against a permitted limit of 15 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Copper, total [as Cu]
35% over limit
Discharged 0.0218 mg/L against a permitted limit of 0.0162 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total suspended
14% over limit
Discharged 40 mg/L against a permitted limit of 35 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
24% over limit
Discharged 31 mg/L against a permitted limit of 25 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
39% over limit
Discharged 17.93 mg/L against a permitted limit of 12.9 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Copper, total [as Cu]
25% over limit
Discharged 0.01805 mg/L against a permitted limit of 0.0144 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
3% over limit
Discharged 31 mg/L against a permitted limit of 30 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
2% over limit
Discharged 23.5 mg/L against a permitted limit of 23 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
76% over limit
Discharged 17.61 mg/L against a permitted limit of 10 mg/L (MO AVG)
DMR, Limited - Numeric Violation
E. coli, thermotol, MF, MTEC
75% over limit
Discharged 220.6 MPN/100mL against a permitted limit of 126 MPN/100mL (MO GEO)
DMR, Limited - Numeric Violation
E. coli, thermotol, MF, MTEC
496% over limit
Discharged 2419.6 MPN/100mL against a permitted limit of 406 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
November 30, 2025
Copper, total [as Cu]
44% over limit
Discharged 0.0208 mg/L against a permitted limit of 0.0144 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Copper, total [as Cu]
33% over limit
Discharged 0.0216 mg/L against a permitted limit of 0.0162 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
October 31, 2025
E. coli, thermotol, MF, MTEC
113% over limit
Discharged 866.4 MPN/100mL against a permitted limit of 406 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
985% over limit
Discharged 14.77315988 kg/d against a permitted limit of 1.36199999 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Copper, total [as Cu]
88% over limit
Discharged 0.027 mg/L against a permitted limit of 0.0144 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Copper, total [as Cu]
79% over limit
Discharged 0.029 mg/L against a permitted limit of 0.0162 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
September 30, 2025
Copper, total [as Cu]
36% over limit
Discharged 0.022 mg/L against a permitted limit of 0.0162 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
726% over limit
Discharged 11.25465991 kg/d against a permitted limit of 1.36199999 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Copper, total [as Cu]
42% over limit
Discharged 0.0205 mg/L against a permitted limit of 0.0144 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
269% over limit
Discharged 55.3 mg/L against a permitted limit of 15 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
20% over limit
Discharged 36 mg/L against a permitted limit of 30 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
August 31, 2025
Phosphorus, total [as P]
694% over limit
Discharged 10.80973991 kg/d against a permitted limit of 1.36199999 kg/d (MO AVG)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
0% over limit
Discharged 17.78771985 kg/d against a permitted limit of 130.29799891 kg/d (DAILY MX)
DMR, Limited - Overdue
BOD, carbonaceous [5 day, 20 C]
0% over limit
Discharged 2.16 mg/L against a permitted limit of 7 mg/L (MO AVG)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
32% over limit
Discharged 5.4 mg/L against a permitted limit of 4.1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Copper, total [as Cu]
4% over limit
Discharged 0.015 mg/L against a permitted limit of 0.0144 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
0% over limit
Discharged 13.05703989 kg/d against a permitted limit of 113.95399904 kg/d (WKLY AVG)
DMR, Limited - Overdue
BOD, carbonaceous [5 day, 20 C]
0% over limit
Discharged 4.4 mg/L against a permitted limit of 14 mg/L (WKLY AVG)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
87% over limit
Discharged 18.7 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total [as Cu]
23% over limit
Discharged 0.02 mg/L against a permitted limit of 0.0162 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
0% over limit
Discharged 6.64201994 kg/d against a permitted limit of 57.20399952 kg/d (MO AVG)
DMR, Limited - Overdue
BOD, carbonaceous [5 day, 20 C]
0% over limit
Discharged 6 mg/L against a permitted limit of 16 mg/L (DAILY MX)
DMR, Limited - Overdue
July 31, 2025
Phosphorus, total [as P]
736% over limit
Discharged 11.3908599 kg/d against a permitted limit of 1.36199999 kg/d (MO AVG)
DMR, Limited - Numeric Violation
June 30, 2025
Phosphorus, total [as P]
767% over limit
Discharged 11.8085399 kg/d against a permitted limit of 1.36199999 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
0% over limit
Discharged 0.34 mg/L against a permitted limit of 4.1 mg/L (MO AVG)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
0% over limit
Discharged 1.32 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
0% over limit
Discharged 6.89625994 kg/d against a permitted limit of 81.26599932 kg/d (DAILY MX)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
0% over limit
Discharged 1.77059999 kg/d against a permitted limit of 0 kg/d (MO AVG)
DMR, Monitor Only - Overdue
April 30, 2025
BOD, carbonaceous [5 day, 20 C]
0% over limit
Discharged 204.33631828 kg/d against a permitted limit of 203.39199829 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
35% over limit
Discharged 17.38 mg/L against a permitted limit of 12.9 mg/L (MO AVG)
DMR, Limited - Numeric Violation
March 31, 2025
BOD, carbonaceous [5 day, 20 C]
0% over limit
Discharged 11.3590799 kg/d against a permitted limit of 187.04799843 kg/d (WKLY AVG)
DMR, Limited - Overdue
BOD, carbonaceous, percent removal
0% over limit
Discharged 98.6 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Overdue
LC50 Static 48Hr Acute Ceriodaphnia dubia
15% over limit
Discharged 85.2 % against a permitted limit of 100 % (MO AV MN)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
0% over limit
Discharged 9.94259992 kg/d against a permitted limit of 81.26599932 kg/d (MO AVG)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
33% over limit
Discharged 17.11 mg/L against a permitted limit of 12.9 mg/L (MO AVG)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
33% over limit
Discharged 17.11 mg/L against a permitted limit of 12.9 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
0% over limit
Discharged 24.9 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Solids, total suspended
0% over limit
Discharged 35.2122397 kg/d against a permitted limit of 244.25199795 kg/d (WKLY AVG)
DMR, Limited - Overdue
Solids, total suspended
0% over limit
Discharged 30.89469974 kg/d against a permitted limit of 122.12599897 kg/d (MO AVG)
DMR, Limited - Overdue
E. coli, thermotol, MF, MTEC
0% over limit
Discharged 2.2 MPN/100mL against a permitted limit of 126 MPN/100mL (MO GEO)
DMR, Limited - Overdue
LC50 Static 48Hr Acute Pimephales promelas
62% over limit
Discharged 37.9 % against a permitted limit of 100 % (MO AV MN)
DMR, Limited - Numeric Violation
Solids, total suspended
0% over limit
Discharged 38.04973968 kg/d against a permitted limit of 285.1119976 kg/d (DAILY MX)
DMR, Limited - Overdue
February 28, 2025
BOD, carbonaceous [5 day, 20 C]
0% over limit
Discharged 46.76199961 kg/d against a permitted limit of 187.04799843 kg/d (WKLY AVG)
DMR, Limited - Overdue
BOD, carbonaceous [5 day, 20 C]
0% over limit
Discharged 13 mg/L against a permitted limit of 23 mg/L (WKLY AVG)
DMR, Limited - Overdue
BOD, carbonaceous [5 day, 20 C]
0% over limit
Discharged 2.36 mg/L against a permitted limit of 10 mg/L (MO AVG)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
138% over limit
Discharged 30.7 mg/L against a permitted limit of 12.9 mg/L (MO AVG)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
138% over limit
Discharged 30.7 mg/L against a permitted limit of 12.9 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
0% over limit
Discharged 8.48525993 kg/d against a permitted limit of 81.26599932 kg/d (MO AVG)
DMR, Limited - Overdue
January 31, 2025
BOD, carbonaceous, percent removal
49% over limit
Discharged 77.65 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
Copper, total [as Cu]
136% over limit
Discharged 0.034 mg/L against a permitted limit of 0.0144 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
39% over limit
Discharged 112.96427905 kg/d against a permitted limit of 81.26599932 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
33% over limit
Discharged 324.41477727 kg/d against a permitted limit of 244.25199795 kg/d (WKLY AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
143% over limit
Discharged 85 mg/L against a permitted limit of 35 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
193% over limit
Discharged 29.25 mg/L against a permitted limit of 10 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
84% over limit
Discharged 46 mg/L against a permitted limit of 25 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Aluminum, total [as Al]
285% over limit
Discharged 0.33500002 mg/L against a permitted limit of 0.087 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
318% over limit
Discharged 62.75 mg/L against a permitted limit of 15 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, Kjeldahl, total [as N]
0% over limit
Discharged 35 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
E. coli, thermotol, MF, MTEC
0% over limit
Discharged 5.6 MPN/100mL against a permitted limit of 126 MPN/100mL (MO GEO)
DMR, Limited - Overdue
Solids, total suspended
180% over limit
Discharged 84 mg/L against a permitted limit of 30 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
98% over limit
Discharged 242.34519796 kg/d against a permitted limit of 122.12599897 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Solids, suspended percent removal
68% over limit
Discharged 74.85 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
130% over limit
Discharged 29.66 mg/L against a permitted limit of 12.9 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
15% over limit
Discharged 328.27377724 kg/d against a permitted limit of 285.1119976 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total [as Cu]
122% over limit
Discharged 0.036 mg/L against a permitted limit of 0.0162 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
0% over limit
Discharged 177.65473851 kg/d against a permitted limit of 203.39199829 kg/d (DAILY MX)
DMR, Limited - Overdue
BOD, carbonaceous [5 day, 20 C]
57% over limit
Discharged 36 mg/L against a permitted limit of 23 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
December 31, 2024
Solids, total suspended
26% over limit
Discharged 44 mg/L against a permitted limit of 35 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
52% over limit
Discharged 38 mg/L against a permitted limit of 25 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
84% over limit
Discharged 18.4 mg/L against a permitted limit of 10 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
41% over limit
Discharged 32.5 mg/L against a permitted limit of 23 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Copper, total [as Cu]
4% over limit
Discharged 0.015 mg/L against a permitted limit of 0.0144 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
48% over limit
Discharged 19.12 mg/L against a permitted limit of 12.9 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Copper, total [as Cu]
11% over limit
Discharged 0.018 mg/L against a permitted limit of 0.0162 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
November 30, 2024
E. coli, thermotol, MF, MTEC
107% over limit
Discharged 841.4 MPN/100mL against a permitted limit of 406 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total [as Cu]
42% over limit
Discharged 0.023 mg/L against a permitted limit of 0.0162 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total [as Cu]
39% over limit
Discharged 0.02 mg/L against a permitted limit of 0.0144 mg/L (MO AVG)
DMR, Limited - Numeric Violation
October 31, 2024
BOD, carbonaceous [5 day, 20 C]
63% over limit
Discharged 26 mg/L against a permitted limit of 16 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
27% over limit
Discharged 8.92 mg/L against a permitted limit of 7 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
14% over limit
Discharged 16 mg/L against a permitted limit of 14 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
E. coli, thermotol, MF, MTEC
113% over limit
Discharged 866.4 MPN/100mL against a permitted limit of 406 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total [as Cu]
53% over limit
Discharged 0.022 mg/L against a permitted limit of 0.0144 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Copper, total [as Cu]
36% over limit
Discharged 0.022 mg/L against a permitted limit of 0.0162 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
September 30, 2024
Copper, total [as Cu]
143% over limit
Discharged 0.035 mg/L against a permitted limit of 0.0144 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
6% over limit
Discharged 258.23519783 kg/d against a permitted limit of 244.25199795 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
E. coli, thermotol, MF, MTEC
Limit violation
Discharged 85.5 MPN/100mL against a permitted limit of 126 MPN/100mL (MO GEO)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
105% over limit
Discharged 14.36 mg/L against a permitted limit of 7 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
150% over limit
Discharged 62.5 mg/L against a permitted limit of 25 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Copper, total [as Cu]
159% over limit
Discharged 0.042 mg/L against a permitted limit of 0.0162 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
119% over limit
Discharged 35 mg/L against a permitted limit of 16 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total suspended
62% over limit
Discharged 24.3 mg/L against a permitted limit of 15 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Aluminum, total [as Al]
159% over limit
Discharged 0.22500001 mg/L against a permitted limit of 0.087 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
220% over limit
Discharged 96 mg/L against a permitted limit of 30 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
E. coli, thermotol, MF, MTEC
Limit violation
Discharged 2419.6 MPN/100mL against a permitted limit of 406 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
180% over limit
Discharged 39.2 mg/L against a permitted limit of 14 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
August 31, 2024
E. coli, thermotol, MF, MTEC
Limit violation
Discharged 16.2 MPN/100mL against a permitted limit of 126 MPN/100mL (MO GEO)
DMR, Limited - Numeric Violation
Copper, total [as Cu]
36% over limit
Discharged 0.022 mg/L against a permitted limit of 0.0162 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total [as Cu]
42% over limit
Discharged 0.0205 mg/L against a permitted limit of 0.0144 mg/L (MO AVG)
DMR, Limited - Numeric Violation
E. coli, thermotol, MF, MTEC
Limit violation
Discharged 2419.6 MPN/100mL against a permitted limit of 406 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
7% over limit
Discharged 15 mg/L against a permitted limit of 14 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
July 31, 2024
E. coli, thermotol, MF, MTEC
Limit violation
Discharged 2419.6 MPN/100mL against a permitted limit of 406 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total [as Cu]
25% over limit
Discharged 0.018 mg/L against a permitted limit of 0.0144 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Copper, total [as Cu]
11% over limit
Discharged 0.018 mg/L against a permitted limit of 0.0162 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
E. coli, thermotol, MF, MTEC
Limit violation
Discharged 9.4 MPN/100mL against a permitted limit of 126 MPN/100mL (MO GEO)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 15, 2026 (6 days ago)