River Dart Data
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Environment Agency monitoring point

MODBURY STW FE

EA sampling point SW-70910353 · Ayleston Brook · 189 samples · 3 determinands · latest 2026-03-26

Ammoniacal Nitrogen as N (MILLIGRAM PER LITRE) over time

Samples — Ammoniacal Nitrogen as N

DateResultUnitPurpose
2026-03-26 09:35—MILLIGRAM PER LITREWATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2026-02-04 10:20—MILLIGRAM PER LITREWATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2026-01-16 11:18—MILLIGRAM PER LITREWATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2025-12-03 11:10—MILLIGRAM PER LITREWATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2025-11-09 09:08—MILLIGRAM PER LITREWATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2025-10-24 10:403.4MILLIGRAM PER LITREWATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2025-09-05 08:50—MILLIGRAM PER LITREWATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2025-08-22 09:19—MILLIGRAM PER LITREWATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2025-07-30 09:22—MILLIGRAM PER LITREWATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2025-06-04 12:50—MILLIGRAM PER LITREWATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2025-05-14 10:03—MILLIGRAM PER LITREWATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2025-04-30 10:25—MILLIGRAM PER LITREWATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2025-03-05 09:000.99MILLIGRAM PER LITREWATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2025-02-14 10:502.7MILLIGRAM PER LITREWATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2025-01-24 10:40—MILLIGRAM PER LITREWATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2024-11-29 08:20—MILLIGRAM PER LITREWATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2024-11-22 08:15—MILLIGRAM PER LITREWATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2024-10-11 07:00—MILLIGRAM PER LITREWATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2024-09-06 08:252.6MILLIGRAM PER LITREWATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2024-08-09 10:30—MILLIGRAM PER LITREWATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2024-07-19 08:10—MILLIGRAM PER LITREWATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2024-06-27 09:55—MILLIGRAM PER LITREWATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2024-05-17 08:15—MILLIGRAM PER LITREWATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2024-04-17 11:17—MILLIGRAM PER LITREWATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2024-03-17 08:10—MILLIGRAM PER LITREWATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2024-02-23 08:55—MILLIGRAM PER LITREWATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2024-01-25 08:200.58MILLIGRAM PER LITREWATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2023-12-06 10:05—MILLIGRAM PER LITREWATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2023-11-15 09:00—MILLIGRAM PER LITREWATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2023-10-20 08:55—MILLIGRAM PER LITREWATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2023-09-08 12:20—MILLIGRAM PER LITREWATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2023-08-11 09:35—MILLIGRAM PER LITREWATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2023-07-21 13:160.6MILLIGRAM PER LITREWATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2023-06-29 10:05—MILLIGRAM PER LITREWATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2023-05-19 08:300.62MILLIGRAM PER LITREWATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2023-04-19 09:200.28MILLIGRAM PER LITREWATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2023-03-19 08:500.39MILLIGRAM PER LITREWATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2023-02-24 08:500.42MILLIGRAM PER LITREWATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2023-01-26 10:250.88MILLIGRAM PER LITREWATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2022-12-07 11:500.35MILLIGRAM PER LITREWATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2022-11-02 10:500.26MILLIGRAM PER LITREWATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2022-10-11 11:4015MILLIGRAM PER LITREWATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2022-09-12 13:330.53MILLIGRAM PER LITREWATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2022-08-12 12:350.4MILLIGRAM PER LITREWATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2022-07-18 11:490.51MILLIGRAM PER LITREWATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2022-06-22 10:550.56MILLIGRAM PER LITREWATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2022-05-06 09:300.37MILLIGRAM PER LITREWATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2022-04-28 10:100.47MILLIGRAM PER LITREWATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2022-03-28 10:300.48MILLIGRAM PER LITREWATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2022-02-11 11:400.64MILLIGRAM PER LITREWATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2022-01-16 11:000.32MILLIGRAM PER LITREWATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2021-12-09 12:102.7MILLIGRAM PER LITREWATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2021-11-03 09:250.23MILLIGRAM PER LITREWATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2021-10-12 11:050.36MILLIGRAM PER LITREWATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2021-09-13 13:303.2MILLIGRAM PER LITREWATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2021-08-13 09:450.96MILLIGRAM PER LITREWATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2021-07-19 10:458.7MILLIGRAM PER LITREWATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2021-06-23 09:201MILLIGRAM PER LITREWATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2021-05-07 09:501MILLIGRAM PER LITREWATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2021-04-12 08:351.2MILLIGRAM PER LITREWATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2021-03-29 11:152.9MILLIGRAM PER LITREWATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2021-03-17 09:502.3MILLIGRAM PER LITREWATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA
2021-02-12 10:050.7MILLIGRAM PER LITREWATER QUALITY OPERATOR SELF MONITORING COMPLIANCE DATA

Source: Environment Agency Water Quality Archive (per-sample observations), Open Government Licence. Regulator monitoring — complements Friends of the Dart’s citizen sampling.